[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN109136270A - A kind of non-viral transfection reagent and its preparation method and application - Google Patents

A kind of non-viral transfection reagent and its preparation method and application Download PDF

Info

Publication number
CN109136270A
CN109136270A CN201810887390.7A CN201810887390A CN109136270A CN 109136270 A CN109136270 A CN 109136270A CN 201810887390 A CN201810887390 A CN 201810887390A CN 109136270 A CN109136270 A CN 109136270A
Authority
CN
China
Prior art keywords
transfection reagent
viral
preparation
cationic
transfection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810887390.7A
Other languages
Chinese (zh)
Other versions
CN109136270B (en
Inventor
黄新珠
江福能
张蓓
邹翠云
钟惟德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Genyu Biotechnology Research Co ltd
Original Assignee
Guangzhou Huiyuanyuan Pharmaceutical Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Huiyuanyuan Pharmaceutical Co ltd filed Critical Guangzhou Huiyuanyuan Pharmaceutical Co ltd
Priority to CN201810887390.7A priority Critical patent/CN109136270B/en
Publication of CN109136270A publication Critical patent/CN109136270A/en
Application granted granted Critical
Publication of CN109136270B publication Critical patent/CN109136270B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09Recombinant DNA-technology
    • C12N15/87Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation

Landscapes

  • Genetics & Genomics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Molecular Biology (AREA)
  • Microbiology (AREA)
  • Plant Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Medicinal Preparation (AREA)

Abstract

本发明属于基因工程领域,尤其涉及一种转染试剂及其制备方法和应用,所述转染试剂组成为:终浓度为10~50ng/ml的阳离子聚合物、终浓度为0.1~20μg/ml的重组多肽、终浓度为5~80ng/ml的阳离子脂质体。本发明能够显著提高具有单一溶酶体逃逸效应的非病毒载体的转染效率,进而提高核酸的递送效率;此外,本发明采用分子自组装方法,可以方便的大规模制备转染复合物,而且该复合物在生物体内可降解,具有较高的使用安全性。

The invention belongs to the field of genetic engineering, and in particular relates to a transfection reagent, a preparation method and application thereof. cationic liposomes with a final concentration of 5-80 ng/ml. The present invention can significantly improve the transfection efficiency of the non-viral vector with a single lysosome escape effect, thereby improving the delivery efficiency of nucleic acid; in addition, the present invention adopts the molecular self-assembly method, which can conveniently prepare the transfection complex on a large scale, and The complex is degradable in vivo and has high safety in use.

Description

A kind of non-viral transfection reagent and its preparation method and application
Technical field
The invention belongs to genetic engineering fields, more particularly to a kind of non-viral transfection reagent and its preparation method and application.
Background technique
Cell transfection technique refers to exogenous DNA or RNA incorporation host cell with target gene and obtains cell newly The method of genetic marker.It is analysis genes within cells, gene product, the important tools of analysis of protein expression function.Cell turns The main purpose of dye is to study gene, gene product and recombinant protein by enhancing or inhibiting the expression of specific gene in cell Function.Cell transfection technique has huge application value in genetic engineering field, such as by gene therapy by purpose base Because transfecting into cell the symptom treated disease or improve patient, pass through people's tissue plasminogen enzyme of Chinese hamster ovary cell acquisition Former activator etc..
The genophore researched and developed so far mainly has viral vectors and non-virus carrier two major classes, most common non- Viral transfection medium is liposome and cationic polymer, they the characteristics of it is similar with virus, readily penetrate through cell membrane.Virus Carrier, such as retrovirus, adenovirus, herpesviral, adeno-associated virus, although transfection efficiency is high, there is in human body Inside there is the risk of self-replacation;And non-virus carrier due to be easy large scale preparation, it is at low cost, to foreign gene without size limit System has many advantages, such as low immunogenicity and comparatively safe, due to the limitation of viral agents, cationic polymer transfection reagent day Benefit is taken seriously.
Cationic polymer can be used as a kind of non-virus carrier, the characteristic with class eucaryotic cell structure and biomembrane, in vivo Bioactivity that is degradable while can protect its passenger gene segment, and it is easy to operate, reproducible, it is that one kind has clinic The Gene transfer vector of application potential.It is positively charged polymerization that cationic polymer (cationic polymers), which transfects principle, Object and the electronegative phosphate group of nucleic acid formed after positively charged compound with the electronegative proteoglycan phase interaction of cell surface Enter cell with and by endocytosis.Common cationic polymer have polylysine (PLL), polyethyleneimine (PEI), Tree-shaped viral envelope glycoprotein polymer, chitosan etc..
But because cytotoxicity is very big, the problems such as causing haemocyte to solidify in transfection process in vivo, existing sun from Sub- polymer cannot be provided simultaneously with two basic demands of safety and low toxicity and high-efficiency transfection and therefore greatly limit it Using.
Viral envelope glycoprotein B (Envelope glycoprotein B, gB), can be by combining mammalian cell table On wide general existing receptor, such as pass through heparan mucopolysaccharide (the heparin sulfate on the various cells of mammal Proglycan, HSPG) mediate retroviral phagocytic process, and also gB glycoprotein can be in the feelings for not depending on other viral envelope proteins It is functioned alone under condition.The combination of gB and host cell can also not depend on HSPG simultaneously, while gB may also be combined into cell Integrin (integrin) or EGF-R ELISA (epidermal growth factor receptor, EGFR) to Promote poisoning intrusion process.Although viral envelope glycoprotein peptide itself quickly and efficiently can enter cell, in conjunction with Limited with the ability of loading siRNA or Plasmid DNA, transfection polypeptide is used alone can not efficient transportation siRNA or Plasmid DNA.
Summary of the invention
In view of the security risk of virus transfection, the inefficient of cationic polymer and to cellulotoxic side effect, the present invention is public A kind of non-viral transfection reagent and its preparation method and application has been opened, transfection efficiency can be improved in the non-viral transfection reagent, The toxic side effect that a kind of cationic polymer is applied alone to cell is reduced simultaneously.
The invention is realized by the following technical scheme:
A kind of non-viral transfection reagent, comprising: the cationic polymer of final concentration of 10~50ng/ml, final concentration of 0.1 The cationic-liposome of the recombinant polypeptide of~20 μ g/ml, final concentration of 5~80ng/ml.
Further, the non-viral transfection reagent, comprising: cationic polymer, the final concentration of final concentration of 20ng/ml Recombinant polypeptide, final concentration of 40ng/ml cationic-liposome for 8 μ g/ml.
Further, the cationic polymer of the non-viral transfection reagent is one kind based on proton sponge effect or appoints The a variety of cationic polymers for proportion of anticipating.
Preferably, the cationic polymer includes polyethyleneimine, polylysine, Polyamide amine or chitosan etc..
Further, the recombinant polypeptide is viral envelope glycoprotein;The viral envelope glycoprotein is tree-shaped virus packet Membrane glycoprotein, preferably recombinant herpesvirus envelope glycoprotein.
Preferably, the amino acid sequence of the recombination gB polypeptide is shown in SEQ ID NO:1 or SEQ ID NO:2.
Further, the cationic-liposome is didodecyldimethylammbromide bromide DDAB, amine cation lipoid Including the amine salt lipoid plastid such as quaternary ammonium, primary amine, secondary amine, such as the oily alkenyloxy group propyl ammonium DOTMA of chlorination trimethyl -2,3- bis-, bromine Change the oily alkenyloxy group propyl ammonium DORIE of dimethyl -2- ethoxy -2,3- two, bromination dimethyl -2- ethoxy -2,3- dioleoyl oxygen The quaternary ammonium salt lipids bodies such as base propyl ammonium DORI.
Further, the transfection reagent further includes solvent;The solvent is HBS (pH7.4).
A kind of preparation method of above-mentioned non-viral transfection, comprising the following steps:
Cationic polymer, recombinant polypeptide, cationic-liposome and solvent mixing, obtain non-viral transfection preparation.
Further, the preparation method of the non-viral transfection reagent, comprising the following steps:
1) cationic polymer solution, is prepared;
2), the preparation of recombinant polypeptide;The preparation of cationic-liposome/recombinant polypeptide compound;
3), the preparation of transfection reagent.
Further, cationic polymer solution formulation operations include: in the step 1)
(1) preparation of HBS (pH7.4): NaCl is dissolved in ultrapure water, HEPES is added, adjusts pH value, constant volume stores up after filtering Be stored in 4 DEG C it is spare;
(2) cationic polymer powder is dissolved in the HBS (pH7.4) of step (1) preparation, concussion uniformly, is configured to The PEI solution of required concentration, filtering, be stored in 4 DEG C it is spare.
Further, cationic-liposome/viral envelope glycoprotein compound preparation in the step 2), comprising: take Equivalent cationic-liposome and viral envelope glycoprotein are dissolved in 1 × HBS (pH7.4), and uniformly, filtering is positive to get arriving for concussion Cationic liposomal/viral envelope glycoprotein complex solution, be stored in 4 DEG C it is spare.
A method of it is transfected using above-mentioned non-viral transfection reagent, comprising:
(4) pipe is taken, number is No. 1 pipe: non-viral transfection reagent and serum free medium is added in serum free medium, Room temperature 5min;
(5) pipe is separately taken, number is No. 2 pipes: nucleic acid and Opti-MEM culture medium is added;
(6) No. 1 pipe solution is slowly added in No. 2 pipes by the speed of 1ml per minute, then the mixing that is vortexed;It stands, nothing is added In blood serum medium;Change complete nutrition culture medium (such as containing 10% serum DMEM culture medium) after 12-16h into;Centrifugation, mistake Filter.
Further, the serum free medium, including Opti-MEM culture medium, DMEM, α-MEM, EMEM, 1640 equal bases Basal culture medium,
Further, the nucleic acid be one of Plasmid DNA, genetic fragment, double-strand or Single-stranded DNA fragments, cDNA or The a variety of combinations arbitrarily matched.
The invention has the advantages that:
Transfection polypeptide of the invention can be used as cell transfecting reinforcing agent, the cell transfecting that auxiliary cationic polymer mediates. When being used in combination with cationic polymer, cationic polymer and polypeptide are mainly combined together by charge effect, this knot Conjunction is covalent bond, will not destroy the biological activity of protein.But this combination can by the restriction enzyme site of protein and Binding site is covered, therefore the enzyme that can not be cultured in base is identified, can so as to effective protection polypeptide without the degradation by enzyme Improve transfection efficiency.
Envelope glycoprotein B polypeptide provided by the invention keeps DNA poly- when acting on cell membrane by intrusion or integrated structure It closes object to be adhered on cell, improves efficiency gene transfection, cytotoxicity will not be caused.
Viral envelope glycoprotein B polypeptide provided by the invention does not have the infection potentiality of viral vectors, because multiple without virus The safety problem of system and infection has the potentiality applied to gene therapy.
The present invention can significantly improve the transfection efficiency of the non-virus carrier with single lysosome escape effect, Jin Erti The delivery efficiency of high nucleic acid;In addition, the present invention uses molecular self-assembling method, it may be convenient to which large scale preparation transfection is compound Object, and the compound is degradable in vivo, safety in utilization with higher.
Detailed description of the invention
Fig. 1 is the expression that cation PEI polymer individually transfects GFP gene after Hela cell;Wherein 1 (A) are as follows: bright Field figure;1 (B) are as follows: fluorogram;1 (C) are as follows: stacking chart.
Fig. 2 is the expression that liposome individually transfects GFP gene after Hela cell;Wherein 2 (A) are as follows: light field figure;2(B) Are as follows: fluorogram;2 (C) are as follows: stacking chart.
Fig. 3 is the expression that PEI and liposome composition transfect GFP gene after Hela cell;Wherein 3 (A) are as follows: light field Figure;3 (B) are as follows: fluorogram;3 (C) are as follows: stacking chart.
Fig. 4 is the expression that PEI and peptide composition transfect GFP gene after Hela cell;Wherein 4 (A) are as follows: light field Figure;4 (A) are as follows: fluorogram;4 (A) are as follows: stacking chart.
Fig. 5 is the expression that liposome and peptide composition transfect GFP gene after Hela cell;Wherein 5 (A) are as follows: bright Field figure;5 (A) are as follows: fluorogram;5 (A) are as follows: stacking chart.
Fig. 6 is GFP gene after transfection reagent of the invention (cation, polypeptide and liposome composition) transfection Hela cell Expression;Wherein 6 (A) are as follows: light field figure;6 (A) are as follows: fluorogram;6 (A) are as follows: stacking chart.
Fig. 7 is the expression that commercially available Lipofectamine 2000 transfects GFP gene after Hela cell.
Fig. 8 is the Cell viability and OD value comparison diagram of a reagent transfection after transfecting 48h and 72h;Wherein 8 (A) are living for cell Rate comparison diagram;8 (B) are OD value comparison diagram.
Fig. 9 bitmap 1 to Fig. 7 transfection experiment transfection efficiency map;Wherein 9-1 is that PEI transfects (Fig. 1), transfection efficiency It is 2.1%;9-2 is liposome transfection (Fig. 2), transfection efficiency 24.5%;9-3 is 3. cations and liposome complex (group Close object 4, Fig. 3) transfection efficiency be 38.8%;9-4 is combined (composition 3, Fig. 4) transfection efficiency with polypeptide for 3. cations 30%;9-5 is that liposome and polypeptide are combined (composition 2, Fig. 5), transfection efficiency 66.2%;9-6 is that transfection of the invention tries Agent (cation, polypeptide and liposome combination (composition 1, Fig. 6)) transfection efficiency is 82.6%;9-7 is Lipofectamine 2000 (Fig. 7), transfection efficiency 60.5%.
Specific embodiment
Technical solution problem to be solved, the technical solution of use and reach beneficial in order to better illustrate the present invention Effect is further described now in conjunction with specific embodiment.It is worth noting that technical solution of the present invention is including but not limited to following Embodiment.
Particular technique or condition are not specified in the embodiment of the present invention, according to the literature in the art described technology or Condition is carried out according to product description.Reagents or instruments used without specified manufacturer, being can be by commercially available etc. The conventional products that approach obtains.
The preparation of the transfection reagent of the present invention of embodiment 1
It the inducing expression of the 1.1 amphiphilic polypeptides of cation and isolates and purifies
The peptide fragment recombinant polypeptide of host cell membrane is merged and combined in a kind of viral envelope glycoprotein, and it includes following institutes The amino acid sequence shown: IYNGWYAX and TXQMXTIYQ, and the polypeptide is the recombinant polypeptide of cell secretion.
In above-mentioned amino acid sequence, X is alternative acidic amino acid, and other than Asp, Glu also be can achieve equally Effect.When X is Asp, the sequence of gB recombinant polypeptide is as shown in SEQ ID NO:1;When X is Glu, polypeptide sequence is SEQ ID Shown in NO:2.
When X be Asp when, which obtains by the following method: synthesis EBV virus BALF4 gene in adherency The related one section of encoding gene of host (NCBI Gene ID:3783680), sequence such as SEQ ID NO:3 correctly weigh sequence Group polypeptide gB gene is connect with eukaryon secreted expression carrier pSecTag2B by T4DNA ligase, and competence large intestine is transformed into Bacillus, screening positive clone filter out the recombinant plasmid pSecTag2B-gB correctly connected, the recombinant plasmid through digestion PSecTag2B-gB is transformed into HEK293T cell and expresses, expression product is in culture supernatant, through examining after linearisation It surveys, the expression quantity of recombinant polypeptide gB of the invention is 5mg/mL~12mg/mL.
When X be Glu when, sequence such as SEQ ID NO:4, other methods with X be Asp when method.
The preparation of 1.2 cationic polymers
The preparation of 1 × HBS (pH7.4): 8.76g NaCl is dissolved in 900ml ultrapure water, is added 20ml 1M (4.766g) HEPES, adjust pH value to 7.4, be settled to 1L, be stored in after filtering (0.2 μm of filter membrane) 4 DEG C it is spare.
It weighs 50mg PEI powder to be dissolved in 1 × HBS of 50ml (pH7.4), concussion uniformly, is configured to 1.0mg/ml's PEI solution, 0.2 μm of membrane filtration, be stored in 4 DEG C it is spare.
The preparation of 1.3 cationic-liposomes/recombination gB polypeptide complex
4mg commercialization cationic-liposome didodecyldimethylammbromide bromide (DDAB) is taken, 1 × HBS of 10mL is dissolved in (pH7.4), concussion uniformly, 0.2 μm of membrane filtration obtains the liposome solutions of 400 μ g/ml, 1.1 described in 8mg/ml in it is made Liposome solutions are diluted 10 times by the recombination gB polypeptide solution obtained, and configuration contains 40 μ g/ml cationic-liposomes and 8mg/ml gB The cationic-liposome of polypeptide/recombination gB polypeptide complex solution, be stored in 4 DEG C it is spare.
The preparation of 1.4 transfection reagents of the present invention
1:50 is mixed the compound that cationic polymer solution made from 1.2 and 1.3 are prepared in proportion.
Embodiment 2 is transfected with transfection reagent of the present invention
2 1.5ml EP pipes are taken, wherein No. 1 pipe: transfection reagent+0.25mL Opti-MEM culture medium 2 μ L of the invention, Room temperature 5min;No. 2 pipes: (plasmid is convenient for containing the carrier pcDNA3.1 (+) of green fluorescent protein (GFP) to 2ul 1ug plasmid The transfection efficiency of cell is observed by luciferase expression situation, pcDNA3.1 (+) is bought from addgene company)+0.25ml Opti- MEM culture medium;It manages for No. 1 and slowly (1ml per minute) is added in No. 2 pipes, then be mixed by inversion 5 seconds.20min is stood, is added long extremely In the cell of 80% convergence degree.12-16h is changed containing 10% serum DMEM culture medium.1300rpm is centrifuged 5min, 0.45 μm of filter membrane Filtering.
The detection of 3 transfection of embodiment
Cationic polymer transfection efficiency and toxicity detection;With different cell detection PEI transfection efficiencies and toxicity.
Positively charged amino group can be with phosphorus negatively charged on plasmid in amino acids cationic-liposome structure Acid groups are compressed completely by electrostatic adsorption, stable cationic liposome complex are formed, by cationic-liposome pressure Shorten the particle of dispersion into.Primary structure at this time does not change, can also avoid being degraded by internal enzyme and salt etc..By certain After amino acids cationic-liposome and PEI or peplos recombinant polypeptide are prepared into compound suspension by ratio, observation discovery No matter liposome combines in any proportion can all occur phenomenon of flocculating, polypeptide not only has protection to Plasmid DNA and promotees infiltration effect, together When, it can also reduce the toxicity of cationic-liposome.Polypeptide head rich in hydrophilic amino acid (MTRRRVLSVVVLLAALACRLGAQT, wherein it is hydrophilic amino acid at underscore), it, can in the aqueous solution of low concentration To form hydrophilic barrier in surface of liposome, to increase stability of the liposome under transfection reagent system, flexible liposomes Character.
From Fig. 1 (Fig. 9-1) and Fig. 2 (Fig. 9-2) as can be seen that the intracellular GFP gene expression of PEI, liposome transfection Situation is seldom.
By the cell that DNA plasmid transfects, for the transfection method of Plasmid DNA with embodiment 2, transfection reagent is to combine in table 1 Object 1-4, and each composition transfection results are observed, see Fig. 3-Fig. 6 (Fig. 9-3 to 9-6).
Each transfection reagent of table 1 composition and final concentration
To the expression of GFP gene after HeLa cytosis, the realization result of 3d such as Fig. 3-Fig. 6 after transfection (Fig. 9-3 to Shown in 9-6).From Fig. 3-Fig. 6 (Fig. 9-3 to 9-6) as can be seen that compared with the cell that PEI, liposome complex transfect respectively, Cation and liposome complex (composition 4, Fig. 3), cation and polypeptide combination (composition 3, Fig. 4), liposome and polypeptide It is combined (composition 2, Fig. 5), cation of the invention, polypeptide and liposome and is combined (composition 1, Fig. 6), Lipofectamine 2000 (Fig. 7, Fig. 9-7) turn reagent compound wink and can enter aim cell with high-efficiency delivery Plasmid DNA and inhibit associated with these types The expression of target gene, intracellular GFP expression conditions are remarkably reinforced, wherein cation of the invention, polypeptide and lipid It is most strong that body is combined (Fig. 6, Fig. 9-6) effect, and is better than commercially available Lipofectamine 2000 (Fig. 7, Fig. 9-7), that is, passes through The synergy of PEI, gB polypeptide and liposome, transfection efficiency of the GFP gene in HeLa cell significantly improve, and show that PEI/ is more The Plasmid DNA system of peptidoliposome compound delivering can be with stable transfection HeLa cell.
4 cytotoxicity experiment of embodiment
It is inoculated with 4000/100 μ L cell suspensions respectively in 2 96 orifice plates.Culture plate is put into preculture in the incubator (37 DEG C, 5%CO2), are transfected respectively with the composition of table 1, and after transfecting 48h and 72h again, measure cell survival with cck8 method Rate is added 20 μ L CCK solution to every hole, culture plate is incubated for 4 hours in incubator, with microplate reader measurement at 450nm Absorbance.As a result as shown in Fig. 8 (8 (A), 8 (B)).
Cck8 decoration method surveys cell quantity and motility rate
It is demonstrated experimentally that this basic no cytotoxicity of carrier, biodegradable, there is higher efficiency gene transfection: with Cervical cancer cell Hela is that target cell is better than commercially available cationic-liposome when GFP is that target gene carries out transfection experiment The transfection efficiency of Lipofectamine 2000, under the highest concentration of transfection efficiency, the transfection effect of Lipofectamine 2000 Rate is 60.5%, and transfection efficiency of the present invention is 82.6%;Under the highest concentration of transfection efficiency, PEI, liposome transfection Cell survival rate is respectively 71.59%, 78.47% after 48h, and cytotoxicity is stronger, and commercially available Lipofectamine 3000 is deposited Motility rate is higher, is 90.13%, and the survival rate of the cell of cationic polymer gene transfection agent of the present invention transfection is 93.66%, toxicity is minimum.
Non-virus carrier lysosome escape mechanism is mainly proton sponge effect, film fusion effect, film perforation or film at present Disturbing effect.There are two types of lysosome escape effects for transfection composite tool in the present invention: the proton sponge effect of cationic polymer Film perforation or film disturbing effect with viral envelope glycoprotein.Both effects, which are used in combination, can significantly improve with single molten The transfection efficiency of the non-virus carrier of enzyme body escape effect, and then improve the delivery efficiency of nucleic acid.The present invention uses molecule from group Dress method, it may be convenient to large scale preparation transfection composite, and also the compound is degradable in vivo, is not easy in vivo Accumulation, safety in utilization with higher.
The above experiment and the experimental results showed that, the novel transgenosis that gB polypeptide, cationic polymer and nucleic acid are formed is multiple Closing object not only can be with high-efficiency delivery DNA, but also cytotoxicity is small.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Sequence table
<110>Guangzhou Hui Yuanyuan Pharmaceutical Technology Co., Ltd
<120>a kind of non-viral transfection reagent and its preparation method and application
<130> HPCNP201810060
<141> 2018-08-06
<160> 4
<170> SIPOSequenceListing 1.0
<210> 1
<211> 250
<212> PRT
<213>artificial sequence (Artificial Sequence)
<400> 1
Met Thr Arg Arg Arg Val Leu Ser Val Val Val Leu Leu Ala Ala Leu
1 5 10 15
Ala Cys Arg Leu Gly Ala Gln Thr Pro Glu Gln Pro Ala Pro Pro Ala
20 25 30
Thr Thr Val Gln Pro Thr Ala Thr Arg Gln Gln Thr Ser Phe Pro Phe
35 40 45
Arg Val Cys Glu Leu Ser Ser His Gly Asp Leu Phe Arg Phe Ser Ser
50 55 60
Asp Ile Gln Cys Pro Ser Phe Gly Thr Arg Glu Asn His Thr Glu Gly
65 70 75 80
Leu Leu Met Val Phe Lys Asp Asn Ile Ile Pro Tyr Ser Phe Lys Val
85 90 95
Arg Ser Tyr Thr Lys Ile Val Thr Asn Ile Leu Ile Tyr Asn Gly Trp
100 105 110
Tyr Ala Asp Ser Val Thr Asn Arg His Glu Glu Lys Phe Ser Val Asp
115 120 125
Ser Tyr Glu Thr Asp Gln Met Asp Thr Ile Tyr Gln Cys Tyr Asn Ala
130 135 140
Val Lys Met Thr Lys Asp Gly Leu Thr Arg Val Tyr Val Asp Arg Asp
145 150 155 160
Gly Val Asn Ile Thr Val Asn Leu Lys Pro Thr Gly Gly Leu Ala Asn
165 170 175
Gly Val Arg Arg Tyr Ala Ser Gln Thr Glu Leu Tyr Asp Ala Pro Gly
180 185 190
Trp Leu Ile Trp Thr Tyr Arg Thr Arg Thr Thr Val Asn Cys Leu Ile
195 200 205
Thr Asp Met Met Ala Lys Ser Asn Ser Pro Phe Asp Phe Phe Val Thr
210 215 220
Thr Thr Gly Gln Thr Val Glu Met Ser Pro Phe Tyr Asp Gly Lys Asn
225 230 235 240
Lys Glu Thr Phe His Glu Arg Ala Asp Ser
245 250
<210> 2
<211> 250
<212> PRT
<213>artificial sequence (Artificial Sequence)
<400> 2
Met Thr Arg Arg Arg Val Leu Ser Val Val Val Leu Leu Ala Ala Leu
1 5 10 15
Ala Cys Arg Leu Gly Ala Gln Thr Pro Glu Gln Pro Ala Pro Pro Ala
20 25 30
Thr Thr Val Gln Pro Thr Ala Thr Arg Gln Gln Thr Ser Phe Pro Phe
35 40 45
Arg Val Cys Glu Leu Ser Ser His Gly Asp Leu Phe Arg Phe Ser Ser
50 55 60
Asp Ile Gln Cys Pro Ser Phe Gly Thr Arg Glu Asn His Thr Glu Gly
65 70 75 80
Leu Leu Met Val Phe Lys Asp Asn Ile Ile Pro Tyr Ser Phe Lys Val
85 90 95
Arg Ser Tyr Thr Lys Ile Val Thr Asn Ile Leu Ile Tyr Asn Gly Trp
100 105 110
Tyr Ala Glu Ser Val Thr Asn Arg His Glu Glu Lys Phe Ser Val Asp
115 120 125
Ser Tyr Glu Thr Glu Gln Met Glu Thr Ile Tyr Gln Cys Tyr Asn Ala
130 135 140
Val Lys Met Thr Lys Asp Gly Leu Thr Arg Val Tyr Val Asp Arg Asp
145 150 155 160
Gly Val Asn Ile Thr Val Asn Leu Lys Pro Thr Gly Gly Leu Ala Asn
165 170 175
Gly Val Arg Arg Tyr Ala Ser Gln Thr Glu Leu Tyr Asp Ala Pro Gly
180 185 190
Trp Leu Ile Trp Thr Tyr Arg Thr Arg Thr Thr Val Asn Cys Leu Ile
195 200 205
Thr Asp Met Met Ala Lys Ser Asn Ser Pro Phe Asp Phe Phe Val Thr
210 215 220
Thr Thr Gly Gln Thr Val Glu Met Ser Pro Phe Tyr Asp Gly Lys Asn
225 230 235 240
Lys Glu Thr Phe His Glu Arg Ala Asp Ser
245 250
<210> 3
<211> 750
<212> DNA
<213>artificial sequence (Artificial Sequence)
<400> 3
atgactcggc gtagggtgct aagcgtggtc gtgctgctag ccgccctggc gtgccgtctc 60
ggtgcgcaga ccccagagca gcccgcaccc cccgccacca cggtgcagcc taccgccacg 120
cgtcagcaaa ccagctttcc tttccgagtc tgcgagctct ccagccacgg cgacctgttc 180
cgcttctcct cggacatcca gtgtccctcg tttggcacgc gggagaatca cacggagggc 240
ctgttgatgg tgtttaaaga caacattatt ccctactcgt ttaaggtccg ctcctacacc 300
aagatagtga ccaacattct catctacaat ggctggtacg cggactccgt gaccaaccgg 360
cacgaggaga agttctccgt tgacagctac gaaactgacc agatggatac catctaccag 420
tgctacaacg cggtcaagat gacaaaagat gggctgacgc gcgtgtatgt agaccgcgac 480
ggagttaaca tcaccgtcaa cctaaagccc accgggggcc tggccaacgg ggtgcgccgc 540
tacgccagcc agacggagct ctatgacgcc cccgggtggt tgatatggac ttacagaaca 600
agaactaccg tcaactgcct gataactgac atgatggcca agtccaacag ccccttcgac 660
ttctttgtga ccaccaccgg gcagactgtg gaaatgtccc ctttctatga cgggaaaaat 720
aaggaaacct tccatgagcg ggcagactcc 750
<210> 4
<211> 750
<212> DNA
<213>artificial sequence (Artificial Sequence)
<400> 4
atgactcggc gtagggtgct aagcgtggtc gtgctgctag ccgccctggc gtgccgtctc 60
ggtgcgcaga ccccagagca gcccgcaccc cccgccacca cggtgcagcc taccgccacg 120
cgagagcaaa ccagctttcc tttccgagtc tgcgagctct ccagccacgg cgacctgttc 180
cgcttctcct cggagatcca gtgtccctcg tttggcacgc gggagaatca cacggagggc 240
ctgttgatgg tgtttaaaga gaacattatt ccctactcgt ttaaggtccg ctcctacacc 300
aagatagtga ccaacattct catctacaat ggctggtacg cgggacccgt gaccaaccgg 360
cacgaggaga agttctccgt tgagagctac gaaactgagc agatggagac catctaccag 420
tgctacaacg cggtcaagat gacaaaagag gggctgacgc gcgtgtatgt agagcgcgag 480
ggagttaaca tcaccgtcaa cctaaagccc accgggggcc tggccaacgg ggtgcgccgc 540
tacgccagcc agacggagct ctatgaggcc cccgggtggt tgatatggac ttacagaaca 600
agaactaccg tcaactgcct gataactgag atgatggcca agtccaacag ccccttcgac 660
ttctttgtga ccaccaccgg gcagagtgtg gaaatgtccc ctttctatga cgggaaaaat 720
aaggaaacct tccatgagcg ggcagactcc 750

Claims (10)

1.一种非病毒转染试剂,其特征在于,包括:终浓度为10~50ng/ml的阳离子聚合物、终浓度为0.1~20μg/ml的重组多肽和终浓度为5~80ng/ml的阳离子脂质体。1. a non-viral transfection reagent, is characterized in that, comprises: the cationic polymer that final concentration is 10~50ng/ml, the recombinant polypeptide that final concentration is 0.1~20 μ g/ml and the final concentration that is 5~80ng/ml Cationic liposomes. 2.根据权利要求1所述的非病毒转染试剂,其特征在于,所述非病毒转染试剂的阳离子聚合物是基于质子海绵效应的一种或至少两种阳离子聚合物。2 . The non-viral transfection reagent according to claim 1 , wherein the cationic polymer of the non-viral transfection reagent is one or at least two cationic polymers based on the proton sponge effect. 3 . 3.根据权利要求3所述的非病毒转染试剂,其特征在于,所述阳离子聚合物包括聚乙烯亚胺、聚赖氨酸、聚酰胺基胺或壳聚糖。3. The non-viral transfection reagent according to claim 3, wherein the cationic polymer comprises polyethyleneimine, polylysine, polyamidoamine or chitosan. 4.根据权利要求1所述的非病毒转染试剂,其特征在于,所述病毒包膜糖蛋白为树状病毒包膜糖蛋白。4. The non-viral transfection reagent according to claim 1, wherein the viral envelope glycoprotein is a dendrimeric envelope glycoprotein. 5.根据权利要求4所述的非病毒转染试剂,其特征在于,所述重组病毒包膜糖蛋白为重组gB多肽;所述重组gB多肽的氨基酸序列为SEQ ID NO:1或SEQ ID NO:2所示。5. The non-viral transfection reagent according to claim 4, wherein the recombinant viral envelope glycoprotein is a recombinant gB polypeptide; the amino acid sequence of the recombinant gB polypeptide is SEQ ID NO: 1 or SEQ ID NO : shown in 2. 6.根据权利要求1所述的非病毒转染试剂,其特征在于,所述阳离子脂质体为双十二烷基二甲基溴化铵DDAB或胺类阳离子类脂质体。6 . The non-viral transfection reagent according to claim 1 , wherein the cationic liposome is didodecyldimethylammonium bromide DDAB or amine cationic liposome. 7 . 7.一种权利要求1-6任意一项所述的非病毒转染试剂的制备方法,其特征在于,包括以下步骤:7. the preparation method of the non-viral transfection reagent described in any one of claim 1-6, is characterized in that, comprises the following steps: 1)、配制阳离子聚合物溶液;1), prepare a cationic polymer solution; 2)、阳离子脂质体/病毒包膜糖蛋白复合物的制备;2), the preparation of cationic liposome/viral envelope glycoprotein complex; 3)、转染试剂的制备。3), the preparation of transfection reagent. 8.根据权利要求7所述的非病毒转染试剂的制备方法,其特征在于,所述步骤1)中阳离子聚合物溶液配制操作包括:8. the preparation method of non-viral transfection reagent according to claim 7, is characterized in that, in described step 1), the preparation operation of cationic polymer solution comprises: (1)HBS(pH7.4)的配制:将NaCl溶解于超纯水,加入HEPES,调pH值,定容,过滤后储存于4℃;(1) Preparation of HBS (pH 7.4): Dissolve NaCl in ultrapure water, add HEPES, adjust pH value, make constant volume, filter and store at 4°C; (2)将阳离子聚合物粉末溶解于步骤(1)配制的HBS(pH7.4)中,震荡均匀,配置成所需浓度的PEI溶液,过滤,储存于4℃。(2) Dissolve the cationic polymer powder in HBS (pH 7.4) prepared in step (1), shake evenly, prepare a PEI solution of the desired concentration, filter, and store at 4°C. 9.根据权利要求7所述的非病毒转染试剂的制备方法,其特征在于,所述步骤2)中阳离子脂质体/病毒包膜糖蛋白复合物的制备,包括:取等量阳离子脂质体和病毒包膜糖蛋白溶解于1×HBS(pH7.4)中,震荡均匀,过滤,即得到阳离子脂质体/重组多肽复合物溶液,储存于4℃备用。9. the preparation method of non-viral transfection reagent according to claim 7, is characterized in that, in described step 2), the preparation of cationic liposome/viral envelope glycoprotein complex comprises: taking equal amount of cationic lipid The plastids and viral envelope glycoproteins were dissolved in 1×HBS (pH 7.4), shaken evenly, and filtered to obtain a cationic liposome/recombinant polypeptide complex solution, which was stored at 4° C. for later use. 10.一种利用权利要求1-6任意一项所述的非病毒转染试剂或权利要求7-9任意一项所述的制备方法所制备得到的转染试剂进行转染的方法,其特征在于,包括:10. A method for transfection using the non-viral transfection reagent described in any one of claims 1-6 or the transfection reagent prepared by the preparation method described in any one of claims 7-9, wherein is, including: (1)取一管,编号为1号管:加入权利要求1-6任意一项所述的转染试剂或权利要求7-9任意一项所述的方法制得的转染试剂和无血清培养基,室温5min;(1) Take a tube, numbered No. 1 tube: add the transfection reagent described in any one of claims 1-6 or the transfection reagent and serum-free obtained by the method described in any one of claims 7-9 culture medium, room temperature for 5 min; (2)另取一管,编号为2号管:加入核酸和Opti-MEM培养基;(2) Take another tube, numbered tube No. 2: add nucleic acid and Opti-MEM medium; (3)将1号管溶液按每分钟1ml的速度缓慢加入2号管中,再涡旋混匀;静置,加入无血清培养基中;12-16h换成完全营养培养基;离心,过滤。(3) Slowly add the solution of No. 1 tube into No. 2 tube at a rate of 1 ml per minute, and then vortex to mix; let stand, add to serum-free medium; 12-16h change to complete nutrient medium; centrifuge, filter .
CN201810887390.7A 2018-08-06 2018-08-06 A non-viral transfection reagent and its preparation method and application Active CN109136270B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810887390.7A CN109136270B (en) 2018-08-06 2018-08-06 A non-viral transfection reagent and its preparation method and application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810887390.7A CN109136270B (en) 2018-08-06 2018-08-06 A non-viral transfection reagent and its preparation method and application

Publications (2)

Publication Number Publication Date
CN109136270A true CN109136270A (en) 2019-01-04
CN109136270B CN109136270B (en) 2025-02-18

Family

ID=64791958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810887390.7A Active CN109136270B (en) 2018-08-06 2018-08-06 A non-viral transfection reagent and its preparation method and application

Country Status (1)

Country Link
CN (1) CN109136270B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110129367A (en) * 2019-05-28 2019-08-16 苏州博特龙免疫技术有限公司 A kind of cationic transfection reagent and its preparation method and application
CN111154805A (en) * 2020-02-11 2020-05-15 苏州吉恒基因科技有限公司 Cationic polymer DNA complex and method for promoting target plasmid to transfect cells and express
CN116083491A (en) * 2023-01-05 2023-05-09 上海利康瑞生物工程有限公司 Cationic transfection reagent composition and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101199858A (en) * 2007-10-18 2008-06-18 广州拓谱基因技术有限公司 Multiple target point small interference RNA cocktail agent for treating ophthalmic disease and preparing method thereof
CN103865942A (en) * 2012-12-18 2014-06-18 常州碳宇纳米科技有限公司 Nano-particles capable of improving gene transfection efficiency and preparation method of gene transfection reagent based on particles
CN107875400A (en) * 2017-11-20 2018-04-06 南通大学 A kind of siRNA echoviruses delivery system of core-shell structure and application

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101199858A (en) * 2007-10-18 2008-06-18 广州拓谱基因技术有限公司 Multiple target point small interference RNA cocktail agent for treating ophthalmic disease and preparing method thereof
CN103865942A (en) * 2012-12-18 2014-06-18 常州碳宇纳米科技有限公司 Nano-particles capable of improving gene transfection efficiency and preparation method of gene transfection reagent based on particles
CN107875400A (en) * 2017-11-20 2018-04-06 南通大学 A kind of siRNA echoviruses delivery system of core-shell structure and application

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GABRIELE D. SCHMIDT-WOLF等: "Non-viral and hybrid vectors in human gene therapy: an update", 《TRENDS IN MOLECULAR MEDICINE》 *
M MORILLE等: "Progress in developing cationic vector for non-viral systematic gene therapy against cancer", 《BIOMATERIALS》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110129367A (en) * 2019-05-28 2019-08-16 苏州博特龙免疫技术有限公司 A kind of cationic transfection reagent and its preparation method and application
CN110129367B (en) * 2019-05-28 2020-04-07 苏州博特龙免疫技术有限公司 Cationic transfection reagent and preparation method and application thereof
CN111154805A (en) * 2020-02-11 2020-05-15 苏州吉恒基因科技有限公司 Cationic polymer DNA complex and method for promoting target plasmid to transfect cells and express
CN111154805B (en) * 2020-02-11 2024-03-12 苏州吉恒基因科技有限公司 Cationic multimeric DNA complexes and methods for promoting transfected cells and expression of plasmids of interest
CN116083491A (en) * 2023-01-05 2023-05-09 上海利康瑞生物工程有限公司 Cationic transfection reagent composition and application thereof

Also Published As

Publication number Publication date
CN109136270B (en) 2025-02-18

Similar Documents

Publication Publication Date Title
CN114007653B (en) Drug delivery vehicle and pharmaceutical formulation using the same
US20050163832A1 (en) Intracellular delivery of therapeutic agents
US20030045465A1 (en) Histidine copolymer and methods for using same
US6245427B1 (en) Non-ligand polypeptide and liposome complexes as intracellular delivery vehicles
KR20010079526A (en) Polyester analogue of poly-l-lysine as a soluble, biodegradable gene delivery carrier
JP2006257088A (en) Compositions and methods for polynucleotide delivery
CN104023711A (en) Porous nanoparticle-supported lipid bilayers (protocells) for targeted delivery including transdermal delivery of cargo and methods thereof
CN102596179A (en) Liposomal compositions and uses of same
JP2003518388A (en) Viral core protein-cationic lipid-nucleic acid delivery complex
Avila et al. Gene delivery and immunomodulatory effects of plasmid DNA associated with Branched Amphiphilic Peptide Capsules
CN109136270A (en) A kind of non-viral transfection reagent and its preparation method and application
CN106362163A (en) Nucleic acid delivery nano systems having double-targeting function
CN113855634A (en) Polypeptide-modified liposome, mRNA (messenger ribonucleic acid) delivery system and dendritic cell vaccine
CN106916209A (en) It is a kind of can be used as the Amphiphilic peptide molecule of genophore
CN114099699A (en) A kind of nanometer delivery system and its preparation method and application
WO2023093596A1 (en) Cyclic polypeptide carrier for efficient delivery of nucleic acid, and variants thereof
CN116286637A (en) Targeted peptide functionalized dendritic cell exosome, and preparation method and application thereof
CN106188537B (en) A kind of PEI compounds of modification and its preparation method and application
KR20220117133A (en) Vaccine composition for the prevention of COVID-19 containing ion complex of cationic molecular carrier and SARS-CoV-2 mRNA
CN102517332B (en) EGF (epidermal growth factor)-modified PAMAM (polyamidoamine) self-assembled composite for transgenosis as well as preparation method and applications thereof
EP3737357A1 (en) Anionic nanocomplexes for nucleic acid delivery
US8722617B2 (en) Mussel adhesive protein derived vectors for gene delivery
CN115260286A (en) DMP-F11 polypeptide conjugate and preparation method and application thereof
CN115521359B (en) Polypeptide nanoparticle compositions
CN102010461A (en) Alpha spiral cation polypeptide molecule and preparation method and application thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20250107

Address after: 528000 Building D, Xianxi 1st Road, Xianxi Village, Yanfeng Community, Shishan Town, Nanhai District, Foshan City, Guangdong Province

Applicant after: Guangdong Genyu Biotechnology Research Co.,Ltd.

Country or region after: China

Address before: 510000 unit 704, floor 7, No. 12, helix Third Road, International Biological Island, Guangzhou, Guangdong

Applicant before: GUANGZHOU HUIYUANYUAN PHARMACEUTICAL Co.,Ltd.

Country or region before: China

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant