WO2023149555A1 - T細胞の製造方法 - Google Patents
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/17—Lymphocytes; B-cells; T-cells; Natural killer cells; Interferon-activated or cytokine-activated lymphocytes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K19/00—Hybrid peptides, i.e. peptides covalently bound to nucleic acids, or non-covalently bound protein-protein complexes
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/62—DNA sequences coding for fusion proteins
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/10—Cells modified by introduction of foreign genetic material
Definitions
- the present invention relates to a method for producing T cells, T cells obtained by the method, pharmaceuticals containing the T cells, and the like. (Background of the invention)
- T cells have been actively promoted around the world (eg, CAR T cell therapy, Treg (regulatory T cell) cell therapy, etc.). It is known that when iPS cells are induced to differentiate into T cells, CD8 single-positive (SP) T cells are mainly induced by conventional 2D culture methods, and other T cells (e.g., CD4SP T cells) are difficult to induce. ing.
- SP single-positive
- Patent Document 1 and Non-Patent Document 1 include a selected population of stromal cells expressing Notch ligands and a selected population of stem cells or progenitor cells, called the ATO (Artificial Thymic Organoid) method.
- a method for preparing a composition of T cells from stem or progenitor cells by culturing three-dimensional cell aggregates is disclosed.
- US Pat. No. 6,200,002 discloses genetically engineered mammalian cells containing a transgene encoding a lineage determinant that promotes differentiation into CD4 + Tregs.
- the purpose of the present invention is to provide a method for producing T cells with high production safety.
- the ATO method is known as a method for inducing the differentiation of iPS cells into various T cells (CD4SP cells, CD8SP cells, ⁇ T cells, regulatory T cells, etc.).
- mouse stromal cells are often used as feeder cells, but considering the hurdles in production from the viewpoint of GMP (Good Manufacturing Protocol), it was preferable to make them xeno-free.
- the present inventors have conducted intensive studies to achieve the above object, and as a result, produced human iPS cell-derived stromal cells (especially fibroblasts) and used them as feeder cells in the ATO method.
- the present inventors have found that a method for producing T cells with high production safety can be provided.
- the present invention was completed through further studies based on these findings, and provides the following methods for producing T cells, T cells, medicines, etc.
- a method for producing T cells comprising: (1) A method comprising the step of culturing a three-dimensional cell aggregate containing cells capable of differentiating into T cells and stromal cells expressing Notch ligands derived from pluripotent stem cells. [2] The method of [1], wherein the cells capable of differentiating into T cells are CD34 + cells or mesodermal progenitor cells. [3] The method of [1], wherein the cells capable of differentiating into T cells are hematopoietic stem cells, hematopoietic endothelial cells, T progenitor cells, or mesodermal progenitor cells.
- [4] The method of [1], wherein the cells capable of differentiating into T cells are hematopoietic endothelial cells.
- [5] The method according to any one of [1] to [4], wherein the cells capable of differentiating into T cells are cells derived from pluripotent stem cells.
- [6] The method according to any one of [1] to [5], wherein the cells capable of differentiating into T cells are iPS cell-derived cells.
- [6a] The method according to any one of [1] to [6], wherein the cells capable of differentiating into T cells are human iPS cell-derived cells.
- [7] The method according to any one of [1] to [6a], wherein the stromal cells are fibroblasts.
- [14b] A cell population derived from pluripotent stem cells, wherein the ratio of CD4 + T cells to CD8 + T cells in ⁇ T cells contained in the cell population is 0.6 or more.
- [16] A pharmaceutical comprising the T cells of [15].
- [17] A method for producing T cells expressing an exogenous T cell receptor and/or a chimeric antigen receptor, comprising: (6) A method comprising the step of introducing a nucleic acid encoding an exogenous T cell receptor and/or a chimeric antigen receptor into T cells obtained by the method according to any one of [1] to [14a].
- the medicament of [16] which is a prophylactic and/or therapeutic agent for T cell-related diseases.
- the medicament of [18], wherein the T cell-related disease is a tumor, an infectious disease, or a blood disease.
- the medicament of [18] wherein the T cell-related disease is abnormally enhanced immune response.
- [20] A method for preventing and/or treating a T cell-related disease, comprising administering the T cell of [15] to a subject in need thereof.
- the method of [20], wherein the T cell-related disease is a tumor, an infectious disease, or a blood disease.
- [21a] The method of [20], wherein the T-cell-related disease is an abnormally enhanced immune response.
- the T cell of [15] for use in preventing and/or treating a T cell-related disease.
- the T cell of [22] wherein the T cell-related disease is a tumor, an infectious disease, or a blood disease.
- the T cell of [22] wherein the T cell-related disease is an abnormal enhancement of immune response.
- T cells of [15] Use of the T cells of [15] in the manufacture of a medicament for preventing and/or treating T cell-related diseases.
- T cell-related disease is a tumor, an infectious disease, or a blood disease.
- T-cell-related disease is abnormally enhanced immune response.
- the present invention provides a method for producing T cells with high production safety.
- stromal cells derived from pluripotent stem cells are used as feeder cells in the production method of the present invention, differences between lots of feeder cells used are small, and T cells can be produced stably.
- T cells with excellent anticancer activity can be produced.
- T cells with excellent cell dynamics can be produced.
- FIG. 2 shows the results of flow cytometry analysis of fibroblast marker CD90 and DLL4 expression in iPS cell-derived fibroblasts and MS5 into which the human DLL4 gene was introduced.
- FIG. 3 shows the analysis results of CD3/TCR ⁇ , CD4/CD8 ⁇ , CD8 ⁇ /CD8 ⁇ , and CAR/IL15R ⁇ by flow cytometry after induction of differentiation from iPS cells to T cells.
- the results of FfI01s04+MS5/DLL4, FfI01s04+iFibro/DLL4, QHJI01s04/G9D2+MS5/DLL4, and QHJI01s04/G9D2+iFibro/DLL4 are shown from the top.
- FIG. 3 is a photograph showing in vivo efficacy of iPS cell-derived CD19CAR T cells. From the top, 1, 2, 3, 4 and 5 weeks after administration are shown.
- Fig. 3 is a graph showing in vivo cell dynamics of iPS cell-derived CD19CAR T cells. Cell counts 1, 2, 3, 4, 5 weeks after administration of cells are shown and graph values are mean ⁇ SD.
- FIG. 10 is a diagram showing the results of examination of the expression levels of proteins expressed in Treg, using Treg differentiated from iPS cells using iPS cell-derived Fibroblast. Dot plots in the figure indicate the CD3 + CD4 + CD8 ⁇ population. In addition, the numerical values in the graph indicate the ratio of Tregs (CD3 + /CD4 + /CD8 - /CD25 + /FOXP3 + ) in each cell population.
- “Comprise(s) or comprising” means the inclusion of, but not limited to, the elements following the phrase. Thus, the inclusion of the elements following the phrase, but not the exclusion of any other element, is suggested.
- “consisting of (s) of or consisting of” is meant including and limited to any and all elements following the phrase. Thus, the phrase “consisting of” indicates that the listed element is required or required and that other elements are substantially absent.
- “consisting essentially of or consisting essentially of” includes any element that follows the phrase and that affects the activity or action specified in this disclosure for that element. not be limited to other elements. Thus, the phrase “consisting essentially of” indicates that the listed elements are required or required but other elements are optional and that they affect the activity or action of the listed elements. indicates that it may or may not be present, depending on whether it exerts
- culturing refers to maintaining and/or growing cells in an in vitro environment. By “culturing” is meant maintaining and/or growing cells in vitro or in vitro, eg, in cell culture dishes or flasks.
- positive (+) means that a protein or gene is expressed in a detectable amount by a method known in the art.
- a reporter protein is expressed together with the protein, and the target protein is detected by detecting the reporter protein. can be detected.
- Gene detection can be performed using, for example, nucleic acid amplification and/or nucleic acid detection methods such as RT-PCR, microarrays, biochips and RNAseq.
- negative (-) means that the expression level of a protein or gene is below the lower limit of detection by all or any of the above known techniques.
- the lower limit of detection for protein or gene expression may vary with each technique.
- the term “marker” means a protein or its gene that is specifically expressed on the cell surface, in the cytoplasm, in the nucleus, etc. in a given cell type.
- the markers are preferably "cell surface markers".
- the term “cell surface marker” refers to a protein expressed on the cell surface that can be labeled (stained) with a fluorescent substance, and can facilitate detection, enrichment, isolation, etc. of cells expressing the cell surface marker.
- Said cell surface marker is a gene that is specifically expressed (positive marker) or not expressed (negative marker) in a given cell type, specifically as mRNA by transcription of said gene in the genome or by translation of said mRNA.
- a protein by refers to a substance that is produced (positive marker) or not produced (negative marker).
- Such cell surface markers can be detected using immunological assays using antibodies specific to the cell surface markers, such as ELISA, immunostaining, and flow cytometry.
- expression is defined as the transcription and/or translation of a specific nucleotide sequence driven by a promoter within a cell.
- pluripotent stem cells refer to embryonic stem cells (ES cells) and similar pluripotent cells, that is, various tissues of the body (endoderm, mesoderm, ectoderm). refers to cells that have the potential to differentiate into all germ layers. Cells having pluripotency similar to ES cells include "induced pluripotent stem cells” (also referred to herein as "iPS cells”).
- ES cells embryonic stem cells
- iPS cells induced pluripotent stem cells
- hematopoietic stem cells are multipotent stem cells that can differentiate into blood lineage cells. Hematopoietic stem cells are mainly present in the bone marrow in the human body, and are formed into leukocytes (neutrophils, eosinophils, basophils, lymphocytes, monocytes, macrophages), erythrocytes, platelets, mast cells, dendritic cells, etc. Differentiate. As used herein, hematopoietic stem cells (HSC) can be CD34 positive and CD7 negative (CD34 + /CD7 ⁇ ). In the present specification, "/" used in expressions such as “CD34 + /CD7 - " means "and".
- HEC hemogenic endothelial cells
- T progenitor cells means hematopoietic cells that arise in the process of differentiating hematopoietic stem cells into CD3-positive T cells in the human body, and are positive for CD34 and CD7 (CD34 + /CD7 + cells). Also herein, proT can be negative for CD43, CD1a and/or CD116.
- meoderm progenitor cell means, for example, T (synonymous with Brachyury), KDR, FOXF1, FLK1, BMP4, MOX1 and at least one marker gene selected from marker genes consisting of SDF1 is expressed. means cell.
- Mesoderm progenitor cells are not distinguished from mesodermal cells, and cells with weak expression of the above-mentioned marker genes may be referred to as mesodermal progenitor cells.
- CD4CD8 double-positive T cells means, among T cells, cells that are both positive for surface antigens CD4 and CD8 (CD8 + /CD4 + ).
- CD4CD8 bipositive T cells can be identified as CD4, CD8, CD3 and CD45 positive cells (CD8 + /CD4 + /CD3 + /CD45 + cells).
- CD4CD8 both negative T cells refers to T cells that are negative for both surface antigens CD4 and CD8 (CD8 ⁇ /CD4 ⁇ ).
- CD4CD8 double negative T cells can be identified as CD4 and CD8 negative and CD3 and CD45 positive cells (CD8 ⁇ / CD4 ⁇ /CD3 + /CD45 + cells).
- hematopoietic stem cells hematopoietic endothelial cells, T progenitor cells, mesodermal progenitor cells, CD4CD8 double-positive T cells, and CD4CD8 double-negative T cells are cells isolated from biological tissues such as bone marrow, umbilical cord blood, and blood. or cells derived from pluripotent stem cells such as ES cells and iPS cells.
- CD4 + T cells means, among T cells, cells that are surface antigen CD4-positive and CD8-negative (CD4 + /CD8 ⁇ ).
- CD4 + T cells can be identified as CD8 negative and CD4, CD3 and CD45 positive cells (CD4 + /CD8 ⁇ /CD3 + /CD45 + cells).
- CD4 + T cells include, for example, helper T cells.
- CD8 + T cells means, among T cells, cells that are surface antigen CD8-positive and CD4-negative (CD8 + /CD4 ⁇ ).
- CD8 + T cells can be identified as cells that are CD4 negative and CD8, CD3 and CD45 positive (CD4 ⁇ /CD8 + /CD3 + /CD45 + cells).
- CD8 + T cells include, for example, cytotoxic T cells.
- ⁇ T cell means a cell that expresses CD3 and TCR (T cell receptor) TCR composed of ⁇ chain ( ⁇ TCR) and TCR ⁇ chain ( ⁇ TCR).
- ⁇ T cell means a cell that expresses CD3 and a TCR composed of a TCR ⁇ chain ( ⁇ TCR) and a TCR ⁇ chain ( ⁇ TCR).
- regulatory T cells refers to the ability to inhibit the activation of effector T cells when stimulated via T cell receptors, suppressing immune responses (immune tolerance).
- T cells that are in charge of Regulatory T cells are usually CD25 + /FOXP3 + cells, among which are CD4 + or CD8 + cells.
- regulatory T cells may be CD4 + cells (i.e. CD4 + /CD25 + /FOXP3 + ) or CD8 + cells (i.e. CD8 + /CD25 + /FOXP3 + ).
- CD4 + cells are more preferred, and CD4 + /CD8 ⁇ /CD25 + /FOXP3 + cells are even more preferred.
- the transcription factor FOXP3 is known as a master regulator of CD4 + /CD25 + regulatory T cells.
- cell population means two or more cells of the same type or different types.
- a “cell population” also means a mass of cells of the same or different types.
- the various cells used in the present invention are preferably GMP standard cells.
- Pluripotent stem cells include, for example, embryonic stem cells (ES cells), induced pluripotent stem cells (iPS cells), embryonic tumor cells (EC cells), embryonic germ stem cells ( EG cells), Muse cells, preferably iPS cells (more preferably human iPS cells).
- ES cells embryonic stem cells
- iPS cells induced pluripotent stem cells
- EC cells embryonic tumor cells
- EG cells embryonic germ stem cells
- Muse cells preferably iPS cells (more preferably human iPS cells).
- the pluripotent stem cell is an ES cell or any cell derived from a human embryo
- the cell may be a cell produced by destroying the embryo or a cell produced without destroying the embryo. It may be, preferably a cell produced without destroying the embryo.
- mouse ES cells can be used from various mouse ES cell lines established by inGenious targeting laboratory, RIKEN (RIKEN), etc., and human ES cells from the University of Wisconsin, Various human ES cell lines established by NIH, RIKEN, Kyoto University, National Center for Child Health and Development, Cellartis, etc. are available.
- human ES cell lines include CHB-1 to CHB-12 strains, RUES1 strain, RUES2 strain, HUES1 to HUES28 strains distributed by ESI Bio, H1 strains distributed by WiCell Research, H9 strains distributed by RIKEN, etc.
- KhES-1 strain, KhES-2 strain, KhES-3 strain, KhES-4 strain, KhES-5 strain, SSES1 strain, SSES2 strain, SSES3 strain, etc. that are distributed can be used.
- “Induced pluripotent stem cells” refer to cells obtained by reprogramming mammalian somatic cells or undifferentiated stem cells by introducing specific factors (nuclear reprogramming factors).
- induced pluripotent stem cells there are various types of "induced pluripotent stem cells", and Yamanaka et al. established iPS by introducing the four factors of Oct3/4, Sox2, Klf4, and c-Myc into mouse fibroblasts.
- iPS cells derived from human cells established by introducing the same four factors into human fibroblasts (Takahashi K, Yamanaka S., et al.
- Nanog-iPS cells were selected using Nanog expression as an index and established (Okita, K., Ichisaka, T.; , and Yamanaka, S. (2007). Nature 448, 313-317.), iPS cells produced by a method that does not contain c-Myc (Nakagawa M, Yamanaka S., et al. Nature Biotechnology, (2008) 26 , 101-106), iPS cells established by introducing six factors by a virus-free method (Okita K et al. Nat. Methods 2011 May; 8(5): 409-12, Okita K et al. Stem Cells. 31(3):458-66.) can also be used.
- induced pluripotent stem cells established by introducing four factors of OCT3/4, SOX2, NANOG, and LIN28 prepared by Thomson et al. (Yu J., Thomson JA. et al., Science (2007) 318: 1917-1920.), induced pluripotent stem cells produced by Daley et al. (Park IH, Daley GQ. et al., Nature (2007) 451: 141-146), induced pluripotent stem cells produced by Sakurada et al. (Japanese Unexamined Patent Application Publication No. 2008-307007) and the like can also be used.
- iPS cell lines established by NIH, RIKEN, Kyoto University, etc. can be used as induced pluripotent stem cell lines.
- Nucleic acid may be any molecule as long as it is a polymer of nucleotides and molecules having functions equivalent to the nucleotides. Polymers in which nucleotides and deoxyribonucleotides are mixed, and nucleotide polymers containing nucleotide analogues can be mentioned, and nucleotide polymers containing nucleic acid derivatives can also be used.
- a nucleic acid may be a single-stranded nucleic acid or a double-stranded nucleic acid.
- a double-stranded nucleic acid also includes a double-stranded nucleic acid in which one strand hybridizes to the other strand under stringent conditions.
- nucleotide analogue compared with RNA or DNA, for improving or stabilizing nuclease resistance, for increasing affinity with a complementary strand nucleic acid, for increasing cell permeability, or for visualization, ribonucleotides
- Any molecule can be used as long as it is a molecule obtained by modifying nucleotides, deoxyribonucleotides, RNA or DNA.
- Nucleotide analogues may be naturally occurring molecules or non-naturally occurring molecules, such as sugar moiety-modified nucleotide analogues (e.g., nucleotide analogues substituted with 2′-O-methyl ribose, 2′-O- Nucleotide analogues substituted with propyl ribose, nucleotide analogues substituted with 2′-methoxyethoxyribose, nucleotide analogues substituted with 2′-O-methoxyethylribose, 2′-O-[2-(guanidinium ) ethyl] ribose-substituted nucleotide analogues, 2′-fluororibose-substituted nucleotide analogues, bridged nucleic acid (BNA), locked nucleic acid (LNA), ethylene Bridged structure type artificial nucleic acid (ENA: ethylene bridge
- nucleic acid derivative a different chemical is added to the nucleic acid in order to improve the nuclease resistance compared to the nucleic acid, to stabilize the nucleic acid, to increase the affinity with the complementary strand nucleic acid, to increase the cell permeability, or to make the nucleic acid visible.
- Any molecule may be used as long as it is a molecule to which a substance is added, and specific examples thereof include 5′-polyamine addition derivatives, cholesterol addition derivatives, steroid addition derivatives, bile acid addition derivatives, vitamin addition derivatives, Cy5 addition derivatives, and Cy3 addition derivatives. , 6-FAM-added derivatives, biotin-added derivatives, and the like.
- Step (1) is a step of culturing a three-dimensional cell aggregate containing cells capable of differentiating into T cells and stromal cells expressing Notch ligands derived from pluripotent stem cells.
- step (1) By using a production method that includes step (1), it is possible to induce differentiation into T cells with high efficiency.
- the culturing of the three-dimensional cell aggregates in step (1) is carried out using cells capable of differentiating into T cells and stromal cells expressing Notch ligands derived from pluripotent stem cells. /075389 etc. can be referred to and implemented.
- Cells capable of differentiating into T cells used in step (1) are not particularly limited as long as they are cells capable of differentiating into T cells. Both positive T cells and the like are included, preferably CD34 + cells or mesodermal progenitor cells, more preferably hematopoietic endothelial cells, hematopoietic stem cells, T progenitor cells, or mesodermal progenitor cells, particularly preferably hematopoietic endothelial cells.
- the CD34 + cells are CD34-expressing (CD34 + ) cells, in particular CD34-expressing but not CD7-expressing (CD34 + /CD7 ⁇ ) cells.
- CD34 + cells include, for example, hematopoietic endothelial cells and hematopoietic stem cells.
- Cells capable of differentiating into T cells used in step (1) are more preferably cells induced to differentiate from pluripotent stem cells (especially iPS cells (especially human iPS cells)).
- the cells capable of differentiating into T cells used in step (1) are cells obtained by inducing differentiation of pluripotent stem cells (especially iPS cells (especially human iPS cells)) into CD34 + cells (especially hematopoietic endothelial cells). should be used.
- step (1) can be performed on CD34 + cells containing hematopoietic endothelial cells (i.e., hematopoietic Step (1) can also be performed on hematopoietic endothelial cells separated according to known methods (e.g., flow cytometry, magnetic cell separation).
- stromal cells cells that express Notch ligands and are derived from pluripotent stem cells are used.
- Stromal cells are a general term for connective tissue cells that support parenchymal cells, and typical examples include fibroblasts, blood cells, endothelial cells, smooth muscle cells, epithelial cells, and tissue stem cells. Stromal cells can be used singly or in combination of two or more.
- a nucleic acid for expressing a Notch ligand is introduced into the stromal cells.
- Stromal cells expressing Notch ligands can be produced by introducing the above nucleic acid into stromal cells. It can also be produced by introducing the above nucleic acid into pluripotent stem cells (especially iPS cells (especially human iPS cells)) and then differentiating the pluripotent stem cells into stromal cells.
- the stromal cells used in the production method of the present invention are stromal cells that have been induced to differentiate from pluripotent stem cells (especially iPS cells (especially human iPS cells)). In particular, it is desirable to use cells obtained by inducing differentiation of human iPS cells)) into fibroblasts. Differentiation induction of pluripotent stem cells into stromal cells can be performed according to known methods, and when the pluripotent stem cells are human iPS cells, for example, PLoS ONE 8(10): e77673, 2013 Differentiation of iPS cells into fibroblasts can be induced by the method described above.
- stromal cells derived from pluripotent stem cells it is possible to provide a method for producing T cells with higher production safety than when primary cells or cell lines are used. .
- pluripotent stem cell-derived stromal cells T cells can be stably produced with little difference between lots of feeder cells used.
- Notch ligands are not particularly limited, and include standard Notch ligands and non-standard Notch ligands described in WO 2017/075389.
- Canonical Notch ligands include, for example, DLL4 (delta-like ligand 4), DLL1 (delta-like ligand 1), JAG1 (Jagged1), JAG2 (Jagged2), and the like. These can be used individually by 1 type or in combination of 2 or more types.
- Non-canonical Notch ligands include, for example, contactin-1, NOV/CCN3, contactin-6, periostin/OSF-2, DLK2/EGFL9, Pref-1/DLK1/FA1, DNER, thrombospondin-2, MAGP- 1/MFAP2, thrombospondin-3, MAGP-2/MFAP5, thrombospondin-4 and netrin-1.
- Human DLL4 is preferably used as the Notch ligand.
- the means for introducing the nucleic acid for expressing the Notch ligand into stromal cells or pluripotent stem cells is not particularly limited, and various known or general means can be adopted.
- the nucleic acid for expressing the Notch ligand is introduced into stromal cells using an expression vector and expressed.
- Expression vectors may be linear or circular, and may be non-viral vectors such as plasmids, viral vectors, or transposon-based vectors.
- the method for introducing the expression vector into the stromal cell can be appropriate according to the embodiment.
- an expression vector can be introduced into stromal cells by known methods such as virus infection, calcium phosphate, lipofection, microinjection, and electroporation.
- the expression vector can be prepared into a form suitable for use in each technique by known means and using a commercially available kit (according to the instructions).
- the expression vector can be introduced into stromal cells by a virus infection method.
- Viral vectors include, for example, retroviral vectors, lentiviral vectors, adenoviral vectors, and adeno-associated viral vectors.
- a vector containing a nucleic acid for expressing the Notch ligand and a packaging vector (plasmid) of each virus are transfected into host cells using a corresponding commercially available kit for recombination. After virus production, the resulting recombinant virus may be used to infect stromal cells.
- the expression vector may contain sequences such as a nuclear localization signal (NLS) and a multiple cloning site (MCS), if necessary.
- the expression vector further includes reporter genes (e.g., genes encoding fluorescent proteins of each color), drug selection genes (e.g., kanamycin resistance gene, ampicillin resistance gene, puromycin resistance gene), suicide genes (e.g., diphtheria A toxin, simple Herpes thymidine kinase (HSV-TK), carboxypeptidase G2 (CPG2), carboxylesterase (CA), cytosine deaminase (CD), cytochrome P450 (cyt-450), deoxycytidine kinase (dCK), nitroreductase (NR), purine Genes encoding nucleoside phosphorylase (PNP), thymidine phosphorylase (TP), varicella-zoster virus thy
- reporter genes e.g., genes encoding fluorescent
- the cells and stromal cells that can be differentiated into T cells may be human-derived or non-human mammalian (non-human mammalian)-derived cells, preferably human. From the viewpoint of xeno-free, it is desirable to use human-derived cells.
- Non-human mammals include, for example, mice, rats, hamsters, guinea pigs, rabbits, dogs, cats, pigs, cows, horses, sheep, and monkeys.
- a three-dimensional cell aggregate can be formed, for example, by centrifuging cells capable of differentiating into T cells or cells induced to differentiate from them and stromal cells expressing Notch ligands.
- the ratio of stromal cells to cells capable of differentiating into T cells is 100:1 to 1:100, 20:1 to 1:20, 10:1 to 1:10, preferably 4:1 to 1. :4, more preferably 1:1.
- the medium for culturing three-dimensional cell aggregates is not particularly limited, and examples thereof include serum-free medium, particularly serum-free medium containing insulin (further biotin, transferrin, and albumin).
- Base media for culturing three-dimensional cell aggregates include, for example, AIMV, X-VIVO-15, NeuroBasal, EGM2, TeSR, BME, BGJb, CMRL1066, Glasgow MEM, improved MEM zinc option, IMDM, 199 medium, Eagle's MEM, ⁇ MEM, DMEM, Ham, RPMI-1640, Fisher's medium and the like. Any one of these media may be used alone, or two or more may be used in combination. In addition, medium components described in International Publication No. 2017/075389 and the like may be appropriately added.
- the culture conditions for culturing the three-dimensional cell aggregates are, for example, a culture temperature of about 20 to 40° C., a CO 2 concentration of about 2 to 10%, and an oxygen concentration of about 1 to 20%.
- the period can be, for example, about 1 to 12 weeks, preferably 3 to 10 weeks, more preferably 6 to 9 weeks.
- the cell density at the start of culture can be, for example, about 1.0 ⁇ 10 4 to 1.0 ⁇ 10 10 cells/mL.
- the medium, culture conditions, etc. used in the production method of the present invention can be those suitable for the type of cells to be cultured.
- the basal medium used for such a medium is not particularly limited as long as it can be used for culturing animal cells, and examples thereof include those mentioned above.
- the medium may contain serum or may be serum-free.
- the medium also contains serum replacements (e.g., albumin, transferrin, Knockout Serum Replacement (KSR), fatty acids, insulin, collagen precursors, trace elements, 2-mercaptoethanol, 3'-thiolglycerol, ITS-supplements, etc.) You may have One or two or more serum substitutes can be used.
- serum replacements e.g., albumin, transferrin, Knockout Serum Replacement (KSR), fatty acids, insulin, collagen precursors, trace elements, 2-mercaptoethanol, 3'-thiolglycerol, ITS-supplements, etc.
- the medium also contains one or more substances such as lipids, amino acids (such as non-essential amino acids), L-glutamine, vitamins, growth factors, cytokines, antibiotics, antioxidants, pyruvic acid, buffers, and inorganic salts. can contain.
- substances such as lipids, amino acids (such as non-essential amino acids), L-glutamine, vitamins, growth factors, cytokines, antibiotics, antioxidants, pyruvic acid, buffers, and inorganic salts. can contain.
- the medium it is desirable to use a chemically-defined medium that does not contain serum or other substances whose components are not clear, because it reduces differences between medium lots and allows the preparation of cells with stable quality. .
- the pH of the medium is usually 7.0-7.8, preferably 7.2-7.6.
- the medium is preferably sterilized by a method such as filtration, ultraviolet irradiation, heat sterilization, or irradiation before use. Culturing is performed in the presence or absence of feeder cells. Culture conditions are not particularly limited, and conditions commonly used for cell culture can be used. In culture, passages may be performed as many times as necessary to obtain a desired amount of cells, and medium may be added and replaced.
- the culture vessel is not particularly limited, and can be appropriately selected from plates, dishes, petri dishes, flasks, bags, bottles, tanks (culture tanks), bioreactors, and the like.
- the production method of the present invention may further include a step of isolating T cells in order to enrich the obtained T cells. Separation of T cells can be performed by known methods such as a method using flow cytometry and a magnetic cell separation method.
- the T cells obtained by the production method of the present invention are CD3 + cells, for example, helper T cells that are CD4 + T cells, cytotoxic T cells that are CD8 + T cells, regulatory T cells, Tfh cells (CXCR5 + cells), ⁇ T cells, NKT cells (CD56 + cells), naive T cells (CD45RA + CCR7 + cells), central memory T cells (CD45RA - CCR7 + cells), effector memory T cells (CD45RA - CCR7 - cells), terminal effector T cells (CD45RA + CCR7 ⁇ cells), and the like.
- CD4 + T cells, CD8 + T cells, ⁇ T cells and regulatory T cells are desirable.
- T cells may be either of one type alone or a mixture of two or more types.
- a cell population derived from pluripotent stem cells is produced by the production method of the present invention, and ⁇ T cells contained in the cell population
- a cell population can be produced that contains a high percentage of CD4 + T cells relative to CD8 + T cells in a cell.
- the production method of the present invention provides ⁇ T cells with a high content ratio of CD4 + T cells to CD8 + T cells without the step of separating T cells in the process of producing T cells from cells capable of differentiating into T cells. It is characterized by being able to manufacture groups. When the step of isolating T cells is not included, the cell population can be produced more efficiently than when the step is included.
- the ratio (number of cells) of CD4 + T cells to CD8 + T cells in the ⁇ T cells contained in the cell population containing CD4 + T cells and CD8 + T cells is, for example, 0.1 or more, 0.2 or more, 0.2 or more, 3 or more, 0.4 or more, 0.5 or more, 0.6 or more, 0.7 or more, 0.8 or more, 0.9 or more, 1.0 or more, 1.1 or more, 1.2 or more, 1. 3 or more, 1.4 or more, 1.5 or more, 1.6 or more, 1.7 or more, 1.8 or more, 1.9 or more, 2.0 or more, 2.1 or more, 2.2 or more, 2.
- the T cells obtained by the production method of the present invention may be T cells into which a foreign gene has been introduced.
- a “foreign gene” is a gene that is introduced from the outside in order to express a desired protein in T cells, and can be appropriately selected according to the use of T cells.
- the exogenous gene can be, for example, a gene for expressing CAR, and a gene for expressing cytokine and/or chemokine (for example, a fusion protein in which IL-15 and IL-15R ⁇ are linked). (IL-15R ⁇ /IL-15)) can also be included.
- CARs expressed by T cells are basically similar to common or known CARs: (i) an antigen recognition site (e.g., single-chain antibody) that recognizes a cell surface antigen of cancer cells, (ii) a cell membrane Peptides at each site of the penetrating region and (iii) the signaling region that induces activation of T cells are constructed by linking via spacers as necessary.
- the TCR can be either a dimer of the ⁇ chain, ⁇ chain or the ⁇ chain, ⁇ chain.
- an exogenous TCR means exogenous to the T cell into which the nucleic acid encoding the exogenous TCR is introduced, and the amino acid sequence of the exogenous TCR is identical to the endogenous TCR of the T cell. may be different.
- the exogenous gene to be introduced is a nucleic acid encoding an exogenous T-cell receptor
- an example of the nucleic acid is a nucleic acid encoding Vg9Vd2TCR.
- Means for introducing foreign genes into cells include the methods described above.
- the cells into which the exogenous gene is introduced are not particularly limited, and may be at any stage of differentiation. Examples include pluripotent stem cells (especially iPS cells), cells capable of differentiating into T cells, and T cells mentioned.
- T cells obtained by the production method of the present invention include (a) Foxp3 gene CNS1 (conserved non-coding sequence 1), CNS2 (conserved (b) a promoter; and (c) a nucleic acid encoding FOXP3 (herein simply “expression construct” or “CNS -Foxp3”).
- the expression construct is not particularly limited as long as it can express FOXP3, and in addition to the above (a), (b), and (c), it includes a terminator, a polyadenylation signal, Foxp3 3'UTR, and the like. It is more preferable that they function in the cells into which they have been introduced.
- the base sequence of the human Foxp3 gene is RefSeq Accession No. It is registered as NM_001114377 (SEQ ID NO: 1) and NM_014009 (SEQ ID NO: 2), and the amino acid sequence is also RefSeq Accession No. It is registered as NP_001107849 (SEQ ID NO: 3) and NP_054728 (SEQ ID NO: 4).
- the RefSeq ID here is the one registered on the NCBI website.
- the above-mentioned genes include degenerate products and mutants thereof, even if they have nucleotide sequences registered in databases as described above. It is desirable to encode a protein that has biological activity equivalent to that of the other protein.
- FOXP3 means a protein
- Foxp3 means a gene, but when it is appropriate to interpret FOXP3 and Foxp3 as a gene and a protein, respectively, they mean a gene and a protein.
- the nucleic acid encoding FOXP3 is not particularly limited as long as it is a nucleic acid encoding the FOXP3 protein, preferably FOXP3 cDNA.
- the CNS1, CNS2 and CNS3 used in the present invention are all derived from the Foxp3 gene.
- CNS1, CNS2 and CNS3 are Foxp3 enhancer elements.
- the promoter used in the present invention is not particularly limited. sarcoma virus) promoter, MoMuLV (Moloney murine leukemia virus) LTR, HSV-TK (herpes simplex virus thymidine kinase) promoter, etc., preferably the Foxp3 gene promoter.
- Preferred nucleotide sequences of CNS1, CNS2, CNS3 and promoter of human Foxp3 gene include the nucleotide sequences shown in SEQ ID NOS:5 to 8, respectively.
- the promoters, CNS1, CNS2 and CNS3 include mutants other than those having the nucleotide sequences as described above, and the mutants are equivalent to the promoters, CNS1, CNS2 and CNS3 comprising the above nucleotide sequences. is desirable to have the biological activity of As mutants, 80% or more, 85% or more, 90% or more, 91% or more, 92% or more, 93% or more, 94% or more, 95% or more, 96% or more, 97% or more relative to the natural base sequence % or more, 98% or more, or 99% or more of the nucleotide sequence identity.
- the arrangement (order) of the nucleic acids encoding the promoter, CNS1, CNS2, CNS3 and FOXP3 in the expression construct is not particularly limited, and CNS1, CNS2 and CNS3 are preferably located upstream of the promoter, and More preferably, it is a nucleic acid encoding CNS1-CNS2-CNS3-promoter-FOXP3 in that order.
- pluripotent stem cells especially iPS cells
- CD34 + cells especially hematopoietic endothelial cells
- CD34 + cells especially hematopoietic endothelial cells
- T cells produced by the production method of the present invention are useful for prevention and/or treatment of T cell-related diseases.
- the T cells produced by the production method of the present invention are CD4 + T cells, CD8 + T cells or ⁇ T cells, for example, these cells can be used to treat tumors (blood tumors, solid tumors), infectious diseases, blood diseases, etc. and prophylactically useful, but not limited to.
- the T cells produced by the production method of the present invention are regulatory T cells, these cells are useful for the treatment and prevention of animals (especially humans) with an abnormally enhanced immune response.
- T cells produced by the production method of the present invention may be used for autologous transplantation or allografting. In addition, it may be used in combination with other drugs.
- the subject from whom the cells for use in producing T cells are isolated must have the same HLA type as the subject to whom the T cells are administered.
- the subject is the same subject to which the T cells are administered.
- a drug containing T cells (hereinafter sometimes referred to as the drug of the present invention) can be produced.
- the medicament of the present invention can be produced as a parenteral preparation by mixing an effective amount of T cells with a pharmaceutically acceptable carrier according to known means (e.g., methods described in the Japanese Pharmacopoeia). is preferred.
- the medicament of the present invention is preferably produced as parenteral preparations such as injections, suspensions, drip infusions and the like.
- Parenteral administration methods include intravenous, intraarterial, intramuscular, intraperitoneal and subcutaneous administration.
- Examples of pharmaceutically acceptable carriers include solvents, bases, diluents, excipients, soothing agents, buffers, preservatives, stabilizers, suspending agents, tonicity agents, surfactants, Dissolution aids and the like are included.
- the dosage of the medicament of the present invention can be appropriately determined according to various conditions such as patient weight, age, sex, and symptoms. , usually 1 ⁇ 10 6 to 1 ⁇ 10 10 , preferably 1 ⁇ 10 7 to 1 ⁇ 10 9 , more preferably 5 ⁇ 10 7 to 5 ⁇ 10 8 administered to Moreover, it may be administered once or multiple times.
- the medicament of the invention can be in known forms suitable for parenteral administration, eg injections or infusions.
- the medicament of the present invention may contain physiological saline, phosphate-buffered saline (PBS), medium, etc. in order to maintain cells stably.
- the medium includes, but is not limited to, RPMI, AIM-V, X-VIVO10 and the like.
- pharmaceutically acceptable carriers eg, human serum albumin
- preservatives and the like may be added to the drug for the purpose of stabilization.
- the pharmaceutical of the present invention is applied to mammals including humans.
- iPS cell-derived Fibroblast/DLL4 cells iPS cells (Ff-I01s04 strain: healthy human peripheral (derived from blood mononuclear cells) were induced to differentiate into fibroblasts. Subsequently, using lentivirus, cells forcibly expressing DLL4, a Notch ligand, under the EF1alpha promoter were prepared.
- the Ff-I01s04 strain was added to AK03N (Ajinomoto Co., Inc.) at 1 ⁇ 10 6 cells/well in a 6-well plate (Corning) treated with ultra-low adhesion and Y-27632 (Fujifilm Wako Pure Chemical Industries, Ltd.).
- CHIR990211 (Tocris) was added (Day 0), and the next day the cells were added to Fibroblast medium (alpha-MEM (Invitrogen) with 20% FBS (Corning), 10 ⁇ g/ml human insulin, 5.5 ⁇ g/ml human transferrin, 5 ng/ml sodium selenite (ITS, Gibco), 2 mM L-glutamine, 100 U/ml penicillin, 100 ⁇ g/ml streptomycin (PSG, Sigma-Aldrich), and 50 ⁇ g/ml ascorbic acid 2-phosphate (Sigma -Added Aldrich) and seeded on a 10 cm dish (Corning) coated with 0.1% gelatin (Nacalai Tesque, Inc.) (Day 1). The medium was exchanged twice a week, and culture was continued for 7 days to obtain a cell population containing fibroblasts (Day 8).
- Fibroblast medium alpha-MEM (Invitrogen) with 20% FBS (Corning), 10 ⁇
- iPS cell-derived fibroblasts were seeded on a gelatin-coated 24-well plate at 1 ⁇ 10 5 cells/well, and the next day, a lentivirus solution incorporating the human DLL4 gene downstream of the EF1alpha promoter and a final concentration of 10 ⁇ g were added.
- iPS cell-derived Fibroblast/DLL4 cells (iFibro/DLL4) were prepared by adding protamine to 1/mL.
- the prepared cells were stained with anti-DLL4 antibody-APC (BioLegend) or anti-CD90 antibody-APC (BioLegend), which is a fibroblast marker, and analyzed by flow cytometry. As a result, expression of DLL4 and fibroblast markers was observed as shown in FIG.
- Vg9Vd2TCR-introduced iPS cells QHJI01s04/G9D2 cells
- iPS cells QHJI01s04 strain: derived from peripheral blood mononuclear cells of healthy subjects
- iPS cells were seeded in a 24-well plate at 1 ⁇ 10 4 cells/well, and the next day, a lentivirus solution incorporating the Vg9Vd2TCR gene downstream of the human ubiquitin promoter was added to a final concentration of 10 ⁇ g/mL. was added with protamine to generate QHJI01s04/G9D2 cells.
- iPS cells Ff-I01s04 strain: derived from peripheral blood mononuclear cells of a healthy subject
- Floating cell populations differentiated according to the method eg, the method described in Cell Reports 2 (2012) 1722-1735 and International Publication No. 2017/221975) were used.
- the Ff-I01s04 strain was seeded at 1 ⁇ 10 6 cells/well on a 6-well plate (Corning) treated with ultra-low adhesion (Day 0), and 10 ⁇ g/ml human insulin was added to EB medium (StemPro34 (Gibco)).
- the cells were cultured for another 4 days (Day 8) in a medium supplemented with 50 ng/ml bFGF, 50 ng/ml VEGF and 50 ng/ml SCF (R&D systems) to obtain a cell population containing HEC.
- the suspension cell population containing HEC was stained using the antibody set in Table 1 below.
- HEC human immunodeficiency virus
- T cell differentiation induction The cell population containing iFibro/DLL4 obtained in 1) above and HEC obtained in 3) above is differentiated into T cells by referring to the method described in International Publication No. 2017/075389. let me
- iFibro/DLL4 or cells in which DLL4 is forcibly expressed in mouse stromal cell line MS5 as a support
- iPS cell-derived HEC prepared in 3 above and 1:1 or 4:1 were co-cultured at a cell ratio of .
- the medium contains 2 x B27 supplement (Invitrogen), 1 x PSG (Sigma-Aldrich), 1 x Glutamax (Invitrogen), 5 ng/mL IL-7 (PeproTech), 5 ng/mL Flt3L (PeproTech), 50 ⁇ g/mL ascorbic acid (Sigma-Aldrich) at final concentrations.
- iPS cell-derived CD19CAR T cells were obtained. Intracellular staining was performed using the set of antibodies shown in Table 2 below, and expression of T cell surface molecules and anti-CD19CAR and IL-15R ⁇ was confirmed by flow cytometry as shown in FIG.
- mice (Charles River Japan, Inc.) were each Nalm6 (human B-cell leukemia cell-derived cell line) transfected with 5 ⁇ 10 5 cells/200 ⁇ L of luciferase.
- the CD19CAR T cells prepared in 4) above were intravenously administered in the group composition shown in Table 3.
- the number of cancer cells was significantly reduced in all CD19CART cell administration groups compared to the control group, indicating that it has strong efficacy. Furthermore, in a comparison between CD19CAR T cells, cells prepared using iFibro/DLL4 as a support showed stronger efficacy than cells prepared using MS5/DLL4 as a support. In addition, as shown in FIG. 4, the number of remaining CD19CAR T cells in vivo in mice tended to be positively correlated with drug efficacy.
- the induction of differentiation from iPS cells to Treg is as follows.
- a DNA sequence in which the mStrawberry protein sequence in the sequence (MK012431) registered in GenBank was changed to the dTomato sequence was incorporated into a transfer plasmid for producing a third generation lentiviral vector to design and synthesize a plasmid sequence.
- This plasmid was transfected into HEK293 cells along with the packaging plasmid and envelope plasmid for lentiviral vector production, and after collecting the supernatant containing the produced lentiviral vector, it was concentrated by high-speed centrifugation and introduced into iPS cells.
- lentiviral vector that Next, the Ff-I01s04 strain was seeded in a 24-well plate at 1 ⁇ 10 4 cells/well, protamine was added at a final concentration of 10 ⁇ g/mL, and then a lentivirus solution incorporating CNS-Foxp3 was directly added, Virus-infected iPS cells were produced.
- the virus-infected Ff-I01s04 strain was seeded at 1 ⁇ 10 6 cells/well in a 6-well plate (Corning) treated with ultra-low adhesion, and 10 ⁇ g/ml human insulin, 5.5 ⁇ g in EB medium (StemPro34 (Gibco)).
- the cells were cultured for another 4 days in a medium supplemented with 50 ng/ml bFGF, 50 ng/ml VEGF and 50 ng/ml SCF (R&D systems) to obtain a cell population containing HEC. Furthermore, the iFibro/DLL4 obtained in 1) above was used as a support and co-cultured with CNS-Foxp3-introduced human iPS cell-derived HEC at a cell ratio of 1:1.
- the medium contains final concentrations of 2xB27 supplement (Invitrogen), 1xPSG (Sigma-Aldrich), 1xGlutamax (Invitrogen), 5ng/mL IL-7 (PeproTech), 5ng/mL Flt3L (PeproTech), 50 ⁇ g/mL ascorbic acid (Sigma- Aldrich) containing RPMI-1640 (Fujifilm Wako Pure Chemical Industries, Ltd.) was co-cultured on 30 mm Millicell (hydrophilic PTFE, pore size 0.4 ⁇ m, height 5 mm, Merck Millipore) in 6 wells. It was placed in a plate (TPP) and cultured for 9 weeks while changing the medium every 3 to 4 days.
- 2xB27 supplement Invitrogen
- 1xPSG Sigma-Aldrich
- 1xGlutamax Invitrogen
- 5ng/mL IL-7 PeproTech
- 5ng/mL Flt3L PeproTech
- the cell population containing CNS-Foxp3-introduced human iPS cell-derived Tregs obtained above was seeded at 2.5 ⁇ 10 5 cells/well on a 48-well cell culture plate bound to an anti-CD3 antibody (eBioscience), and CO 2 incubator under conditions of 37° C. and 5.0% CO 2 for 3 days, the cells were reseeded onto a 24-well G-Rex cell culture plate and culture continued.
- the medium contains FBS (15%, Corning) at final concentrations, L-glutamine-penicillin-streptomycin solution (1/100, Invitrogen, Sigma-Aldrich), insulin-transferrin-selenium supplement (1/100, Invitrogen), ascorbic acid.
- IL-3 60 ng/mL, Biolegend
- IL-4 30 ng/mL, Biolegend
- IL-33 30 ng/mL, Biolegend
- TGF- ⁇ 1 5 ng/mL, Biolegend
- Each cell population was stained using the following antibody sets (Panel 1: Zombie NIR, BV510 CD3, BV421 CD4, PE/Cy7 CD8b, APC CD25, PE GZMB, AF488 FOXP3, PerCP/Cy5.5 CTLA4, Panel 2: Zombie NIR, BV510 CD3, BV421 CD4, PE/Cy7 CD8b, AF488 FOXP3, PE Helios).
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Abstract
Description
(発明の背景)
(1)T細胞に分化可能な細胞と、多能性幹細胞由来のNotchリガンドを発現する間質細胞とを含む3次元細胞凝集体を培養する工程を含む方法。
[2]前記T細胞に分化可能な細胞が、CD34+細胞又は中胚葉前駆細胞である、[1]に記載の方法。
[3]前記T細胞に分化可能な細胞が、造血幹細胞、造血性内皮細胞、T前駆細胞、又は中胚葉前駆細胞である、[1]に記載の方法。
[4]前記T細胞に分化可能な細胞が、造血性内皮細胞である、[1]に記載の方法。
[5]前記T細胞に分化可能な細胞が、多能性幹細胞由来の細胞である、[1]~[4]のいずれかに記載の方法。
[6]前記T細胞に分化可能な細胞が、iPS細胞由来の細胞である、[1]~[5]のいずれかに記載の方法。
[6a]前記T細胞に分化可能な細胞が、ヒトiPS細胞由来の細胞である、[1]~[6]のいずれかに記載の方法。
[7]前記間質細胞が、線維芽細胞である、[1]~[6a]のいずれかに記載の方法。
[8]前記多能性幹細胞が、iPS細胞である、[1]~[7]のいずれかに記載の方法。
[8a]前記多能性幹細胞が、ヒトiPS細胞である、[1]~[8]のいずれかに記載の方法。
[9]前記Notchリガンドが、DLL4、DLL1、JAG1及びJAG2からなる群から選択される少なくとも1種である、[1]~[8a]のいずれかに記載の方法。
[10]工程(1)の前に、
(2)多能性幹細胞を間質細胞に分化誘導する工程を更に含む、[1]~[9]のいずれかに記載の方法。
[11]工程(1)の前に、
(3)iPS細胞をT細胞に分化可能な細胞に分化誘導する工程を更に含む、[6]~[10]のいずれかに記載の方法。
[12]工程(1)の前に、
(4)T細胞に分化可能な細胞に外因性T細胞受容体及び/又はキメラ抗原受容体をコードする核酸を導入する工程を更に含む、[1]~[11]のいずれかに記載の方法。
[13]工程(3)の前に、
(5)iPS細胞に外因性T細胞受容体及び/又はキメラ抗原受容体をコードする核酸を導入する工程を更に含む、[11]又は[12]に記載の方法。
[14]CD4+T細胞、CD8+T細胞、γδT細胞及び制御性T細胞からなる群から選択される少なくとも1種を含むT細胞の製造方法である、[1]~[13]のいずれかに記載の方法。
[14a]CD4+T細胞、CD8+T細胞及びγδT細胞からなる群から選択される少なくとも1種を含むT細胞の製造方法である、[1]~[13]のいずれかに記載の方法。
[14b]多能性幹細胞由来の細胞集団であって、前記細胞集団に含まれるαβT細胞におけるCD8+T細胞に対するCD4+T細胞の比が0.6以上である、細胞集団。
[15][1]~[14a]のいずれかに記載の方法により得られた、T細胞。
[16][15]に記載のT細胞を含有してなる、医薬。
[17]外因性T細胞受容体及び/又はキメラ抗原受容体を発現するT細胞の製造方法であって、
(6)[1]~[14a]のいずれかに記載の方法により得られたT細胞に外因性T細胞受容体及び/又はキメラ抗原受容体をコードする核酸を導入する工程を含む方法。
[18]T細胞関連疾患の予防及び/又は治療剤である、[16]に記載の医薬。
[19]T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、[18]に記載の医薬。
[19a]T細胞関連疾患が、免疫反応の異常な亢進である、[18]に記載の医薬。
[20][15]に記載のT細胞を、それを必要とする対象に投与することを含む、T細胞関連疾患の予防及び/又は治療方法。
[21]T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、[20]に記載の方法。
[21a]T細胞関連疾患が、免疫反応の異常な亢進である、[20]に記載の方法。
[22]T細胞関連疾患の予防及び/又は治療において使用するための、[15]に記載のT細胞。
[23]T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、[22]に記載のT細胞。
[23a]T細胞関連疾患が、免疫反応の異常な亢進である、[22]に記載のT細胞。
[24]T細胞関連疾患を予防及び/又は治療するための医薬の製造における、[15]に記載のT細胞の使用。
[25]T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、[24]に記載の使用。
[25a]T細胞関連疾患が、免疫反応の異常な亢進である、[24]に記載の使用。
工程(1)は、T細胞に分化可能な細胞と、多能性幹細胞由来のNotchリガンドを発現する間質細胞(stromal cell)とを含む3次元細胞凝集体を培養する工程である。
iPS細胞からT細胞を分化誘導する際のフィーダー細胞として用いるために、京都大学iPS細胞研究所から供与されたiPS細胞(Ff-I01s04株:健常人末梢血単核球由来)から線維芽細胞を分化誘導した。続いて、レンチウイルスを用いてNotchリガンドであるDLL4をEF1alphaプロモーター下で強制発現する細胞を作製した。
京都大学iPS細胞研究所から供与されたiPS細胞(QHJI01s04株:健常人末梢血単核球由来)に国際公開第2020/013315号に記載された方法に準じてVg9Vd2TCR遺伝子を導入しVg9Vd2TCR導入iPS細胞を作製した。
造血性内皮細胞を含む細胞集団として、京都大学iPS細胞研究所から供与されたiPS細胞(Ff-I01s04株:健常人末梢血単核球由来)を公知の方法(例えば、Cell Reports 2(2012)1722-1735及び国際公開第2017/221975号に記載された方法)に準じて分化させた浮遊細胞集団を用いた。
上記1)で得られたiFibro/DLL4と上記3)で得られたHECを含む細胞集団を国際公開第2017/075389号等に記載の方法を参考にしてT細胞へ分化させた。
上記4)で作製したiPS細胞由来CD19CART細胞の薬効と細胞動態とを免疫不全マウス担癌モデルにて検討した。
上記4)で作製したiPS細胞由来T細胞集団(抗CD19-CAR遺伝子及びIL-15Rα/IL-15遺伝子を導入する前の細胞集団)において、αβT細胞におけるCD4+T細胞、CD8+T細胞の割合(%)及びCD4+T細胞とCD8+T細胞の比を算出した。その結果、表5に示すように、支持体としてiFibro/DLL4を用いて作製したT細胞集団の方が、支持体としてMS5/DLL4を用いて作製したT細胞集団よりも、CD4+T細胞の割合が高いことがわかった(表5中のCD4+T細胞、CD8+T細胞の割合は平均値を示す)。
iPS細胞からTregへの分化誘導は、具体的には以下のとおりである。GenBankに登録されている配列(MK012431)内のmStrawberryタンパク質配列をdTomato配列に変更したDNA配列を、第3世代レンチウイルスベクター作製用のトランスファープラスミドに組み込んだプラスミド配列をデザイン、合成した。このプラスミドをレンチウイルスベクター作製用のパッケージングプラスミドとエンベローププラスミドと共にHEK293系統の細胞にトランスフェクションを行い、産生されたレンチウイルスベクターを含む上清を回収後、高速遠心法で濃縮しiPS細胞へ導入するレンチウイルスベクターを取得した。次に、Ff-I01s04株を24ウェルプレートに1×104cells/wellで播種し、終濃度10μg/mLでプロタミンを添加した後に、CNS-Foxp3を組み込んだレンチウイルス溶液を直接添加して、ウイルス感染iPS細胞を作製した。
Claims (25)
- T細胞の製造方法であって、
(1)T細胞に分化可能な細胞と、多能性幹細胞由来のNotchリガンドを発現する間質細胞とを含む3次元細胞凝集体を培養する工程を含む方法。 - 前記T細胞に分化可能な細胞が、CD34+細胞又は中胚葉前駆細胞である、請求項1に記載の方法。
- 前記T細胞に分化可能な細胞が、造血幹細胞、造血性内皮細胞、T前駆細胞、又は中胚葉前駆細胞である、請求項1に記載の方法。
- 前記T細胞に分化可能な細胞が、造血性内皮細胞である、請求項1に記載の方法。
- 前記T細胞に分化可能な細胞が、多能性幹細胞由来の細胞である、請求項1に記載の方法。
- 前記T細胞に分化可能な細胞が、iPS細胞由来の細胞である、請求項1に記載の方法。
- 前記間質細胞が、線維芽細胞である、請求項1に記載の方法。
- 前記多能性細胞が、iPS細胞である、請求項1に記載の方法。
- 前記Notchリガンドが、DLL4、DLL1、JAG1及びJAG2からなる群から選択される少なくとも1種である、請求項1に記載の方法。
- 工程(1)の前に、
(2)多能性幹細胞を間質細胞に分化誘導する工程を更に含む、請求項1に記載の方法。 - 工程(1)の前に、
(3)iPS細胞をT細胞に分化可能な細胞に分化誘導する工程を更に含む、請求項6に記載の方法。 - 工程(1)の前に、
(4)T細胞に分化可能な細胞に外因性T細胞受容体及び/又はキメラ抗原受容体をコードする核酸を導入する工程を更に含む、請求項1に記載の方法。 - 工程(3)の前に、
(5)iPS細胞に外因性T細胞受容体及び/又はキメラ抗原受容体をコードする核酸を導入する工程を更に含む、請求項11に記載の方法。 - CD4+T細胞、CD8+T細胞、γδT細胞及び制御性T細胞からなる群から選択される少なくとも1種を含むT細胞の製造方法である、請求項1に記載の方法。
- 請求項1に記載の方法により得られた、T細胞。
- 請求項15に記載のT細胞を含有してなる、医薬。
- 外因性T細胞受容体及び/又はキメラ抗原受容体を発現するT細胞の製造方法であって、
(6)請求項1に記載の方法により得られたT細胞に外因性T細胞受容体及び/又はキメラ抗原受容体をコードする核酸を導入する工程を含む方法。 - T細胞関連疾患の予防及び/又は治療剤である、請求項16に記載の医薬。
- T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、請求項18に記載の医薬。
- 請求項15に記載のT細胞を、それを必要とする対象に投与することを含む、T細胞関連疾患の予防及び/又は治療方法。
- T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、請求項20に記載の方法。
- T細胞関連疾患の予防及び/又は治療において使用するための、請求項15に記載のT細胞。
- T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、請求項22に記載のT細胞。
- T細胞関連疾患を予防及び/又は治療するための医薬の製造における、請求項15に記載のT細胞の使用。
- T細胞関連疾患が、腫瘍、感染症、又は血液疾患である、請求項24に記載の使用。
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