JP2005529091A - エオタキシン伝達炎症状態の処置および予防方法および組成物 - Google Patents
エオタキシン伝達炎症状態の処置および予防方法および組成物 Download PDFInfo
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Abstract
Description
サイトカインは、免疫系の細胞により生産され、そこで作用するペプチドメッセンジャー分子である。それらはパラ分泌ホルモンまたは自己分泌ホルモンの性質を有し、それらが細胞結合を免れ、リンパまたは血漿を通じて全身循環系に溢れ出た場合には全身的に作用し得る。サイトカインは化学的メッセンジャーとして重大な役割を演じ、正常な免疫機能にとっては不可欠なものであり、ある種の免疫系疾患において特異的サイトカインレベルは異常であり、病状を増強する。
開発中の最も関連性のあるサイトカイン中和方法は、サイトカイン受容体アンタゴニストの投与、サイトカインまたはサイトカイン受容体に対するヒト化モノクローナル抗体の投与、または受容体の切頭化形態の投与によるものであり、これらはサイトカインに結合してそれを中和する。例えば、米国特許第5912136号、同第5914110号、同第5959085号、同第6168791B1号および同第6171590B1号は全て上記方法を開示している。報告された別のサイトカイン中和方法は、サイトカイン遺伝子のコーディング配列に相補的なアンチセンス分子の使用によるものであり、その目標は遺伝子の発現を阻止することである。
喘息は最も重要な医学上の問題の一つになっており、米国だけでも約1500万人の喘息患者が存在する。喘息患者の数は過去10年において50%を凌ぐ割合で増加しており、米国では毎年700000人が発病し、多くは子供である。
エオタキシンは、好酸球特異的ケモカインであり、好酸球蓄積を刺激するかまたは好酸球を誘引する。エオタキシンは、好酸球の走化性を誘導するが、好中球、単球またはT細胞の走化性についてはあまり誘導しない。エオタキシンは、単球化学誘導タンパク質(MCP)およびマクロファージ炎症タンパク質(MIP)をも含むクラスである、ケモカインのCCサブファミリーの要員である、Van Coillie et al.、Cytokine & Growth Factor Reviews、10(1999)61−86;Garcia-Zepeda et al.(1996)Nat.Med.、2:449−456参照。
本発明は、サイトカインエオタキシンを標的とするワクチン製品およびエオタキシン介在好酸球蓄積により生じる炎症状態、例えば喘息およびアレルギー疾患および他のアトピー状態について、ヒトを含む動物対象を処置するためのそれらの使用に関するものである。ワクチンまたは免疫原性製品は、種々の免疫原型および送達方法を採用し、単独または他の治療薬と組合わせて使用され得る。
本発明は、エオタキシン介在好酸球蓄積を特徴とする状態の処置に有用な組成物を提供する。喘息および慢性アレルギー疾患が最も一般的であるこれらのアトピー状態には、アトピー性皮膚状態、例えば乾癬および他の状態、例えば好酸球性潰瘍性大腸炎がある。これらの状態の各々において、好酸球は、エオタキシン誘導好酸球漸増を通してかなりの程度罹患組織で蓄積する。高レベルの好酸球が罹患組織に慢性的に存在すると、時間をかけて進行し、不可逆的となり得る顕著な組織損傷が加えられる。先行技術の治療法は、エオタキシン効果の伝達について遂行されているものであり、小分子アンタゴニストによるCCR受容体に対するケモカインの作用の遮断、ヒトまたはヒト化モノクローナル抗体での受動免疫化によるエオタキシンレベルの低減化、またはCCR受容体自体に対する受動または能動免疫化に向けられている。小分子および受動免疫化方法は、反復投与を必要とし、患者コンプライアンスという観点についての欠点を有する。さらに、反復治療の結果として投与されたmABに対する中和性抗体の誘導により、慢性疾患の長期処置についてのmAbによる受動免疫療法の有効性がひどく損なわれ得る(Adair,F.、Drug Discovery World、2002年夏、53−59頁)。他方、CCR3受容体自体に対する能動免疫化は、受容体への他のCCケモカインの結合を妨害し得るため、予想されず、意図されなかった生物学的結果を生じ得る。
GPASVPTTCC10 FNLANRKIPL20 QRLESYRRIT30 SGKCPQKAVI40
FKTKLAKDIC50 ADPKKKWVQD60 SMKYLDQKSP70 TPKP74
本発明の一実施態様は、免疫原性タンパク質担体、例えばDTまたはTTにコンジュゲートされている、エオタキシン分子上の所望のエピトープに対応するエオタキシンペプチドフラグメントを含むことにより、雑多な(promiscuous)T細胞エピトープを提供し、長い抗体応答についての免疫記憶を可能にするコンジュゲート免疫原に関するものである。上記免疫原をヒトまたは動物対象に投与することにより、エオタキシンに対する能動体液性免疫応答を発現させ得る。本発明の一実施態様は、免疫原性担体タンパク質、例えばDTにコンジュゲートされることにより免疫原性にされた全ヒトエオタキシン分子を含む。本発明の他の実施態様は、免疫原性担体タンパク質にコンジュゲートされた短いエオタキシンペプチドフラグメントを含む。コンジュゲートは、一エピトープまたは複数のエピトープを含むほぼ4〜50アミノ酸残基のペプチドを用いて構築され得、対象において抗体を誘導し、対象に存在するエオタキシン分子に存在するエピトープと交差反応させる。次いで、エピトープを含む上記一ペプチドまたは複数ペプチドを、一定範囲のペプチド対担体タンパク質モル比でタンパク質担体にコンジュゲートする。ペプチドは、免疫原性タンパク質に直接コンジュゲートされ得るか、またはペプチドスペーサー配列を組込んで、担体分子からの所望のエピトープを伸長させることにより、抗原提示細胞に対するその提示を促し、所望のエピトープの免疫原性を高め得る。担体へのペプチドのコンジュゲーションをホモ二官能性またはヘテロ二官能性架橋剤により実施することにより、所望のエピトープ含有ペプチドを担体タンパク質に結合させる。二官能性架橋剤の選択は、ペプチドにおける官能部分の利用能により異なる。これらのカップリング方法についての化学作用は、当業界ではよく知られており、米国特許第6132720号、同第5609870号および同第5468494号、およびChemistry of Protein Conjugation and Cross-linking、S.S.Wong(1991)CRCプレス、インコーポレイテッドの開示に示されている。
SSPPPPCKKKWVQDSMKYLDQKSPTPKP(配列番号42)、
KKKWVQDSMKYLDQKSPTPKPSSPPPPC(配列番号43)、
CPPPPSSKKKWVQDSMKYLDQKSPTPKP(配列番号44)、
KKKWVQDSMKYLDQKSPTPKPCPPPPSS(配列番号45)、
GPASVPTTCCFNLANRKIPLSSPPPPC(配列番号46)、
SSPPPPCGPASVPTTCCFNLANRKIPL(配列番号47)、
CPPPPSSGPASVPTTCCFNLANRKIPL(配列番号48)、および
GPASVPTTCCFNLANRKIPLSSPPPPC(配列番号49)。
本発明の別の実施態様では、上記エオタキシンペプチドフラグメントをコード化する核酸配列を含み、さらにTヘルパー細胞エピトープをコード化する核酸配列を含むDNA構築物は、DNAワクチンとして使用される。上記DNAワクチンの構築、処方および投与方法は、当業界では公知であり、本発明のエオタキシンペプチドエピトープに適合される、国際公開第00/65058号、国際公開第98/31398号、Donnelly et al.、1997、Annu.Rev.Immunol.15:617−648およびDonnelly et al.、1997、Life Sciences 60:163−172参照。
この明細書全体を通じて様々な出版物および特許文書が参考文献として引用されている。これらの各参考文献については出典明示により援用する。
Claims (15)
- エオタキシンが伝達する状態についての対象の処置方法であって、エオタキシンに対する活発な免疫応答を対象において生じさせることを含む方法。
- エオタキシンが伝達する状態が、喘息、アレルギーまたはアレルギー性疾患である、請求項1記載の方法。
- 活発な免疫応答が、上記状態の伝達におけるエオタキシンの影響を中和するのに十分なレベルでエオタキシンに結合している自己抗体を対象において産生させることを含む、請求項1記載の方法。
- エオタキシンに結合する抗体を対象において産生させる免疫原性組成物で対象を免疫化することを含む、請求項1記載の方法。
- 免疫原性組成物が、免疫原性担体に結合したエオタキシンまたはエオタキシンの一部分を含む、請求項4記載の方法。
- 免疫原性担体が、T細胞エピトープおよびエオタキシン由来のエピトープを含む、請求項5記載の方法。
- 免疫原性組成物がエオタキシンの免疫原性類似体を含む、請求項6記載の方法。
- 免疫原性組成物がDNAワクチンである、請求項4記載の方法。
- 免疫原性タンパク質担体にカップリングしたエオタキシンまたはそのペプチドフラグメントを含む免疫原性組成物。
- T細胞エピトープおよびエオタキシン由来のエピトープを含む、請求項9記載の免疫原性組成物。
- DT、TTまたはKLHから誘導された免疫原性担体にコンジュゲートされたエオタキシンまたはその一部分を含む、請求項9記載の免疫原性組成物。
- エオタキシンまたはその一部分を免疫原性担体にコンジュゲートすることを含む、請求項9または11記載の組成物の製造方法。
- 請求項9記載の免疫原性組成物、医薬上許容されるアジュバントおよび医薬上許容される賦形剤を含む、治療用ワクチンとして使用される医薬処方物。
- 配列番号1〜38および42〜61に示されたペプチド配列から選択されるペプチド配列またはその混合物を含む、請求項9記載の免疫原性組成物。
- エオタキシンに対して免疫応答を発するペプチドをコード化するDNAワクチン。
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FR2677654B1 (fr) * | 1991-06-17 | 1995-11-17 | Pasteur Merieux Serums Vacc | Composes a effet immunogene anti-cytokine, a effet immunogene anticytostatique ou a effet vaccinal anti-infection a hiv. |
JPH09507211A (ja) * | 1993-09-14 | 1997-07-22 | ナショナル ハート アンド ラング インスティチュート | エオタキシン:好酸球走化性サイトカイン |
US6403782B1 (en) * | 1995-06-22 | 2002-06-11 | President And Fellows Of Harvard College | Nucleic acid encoding eotaxin |
WO1999010534A1 (en) * | 1997-08-22 | 1999-03-04 | Center For Blood Research, Inc. | Diagnosis and treatment of diseases with eotaxin and antagonists and agonists thereof |
US6416763B1 (en) * | 1998-08-28 | 2002-07-09 | Hawaii Biotechnology Group, Inc. | Recombinant nonstructural protein subunit vaccine against flaviviral infection |
US6846486B1 (en) * | 2000-02-24 | 2005-01-25 | Advanced Biotherapy Concepts, Inc. | Method of treating allergy by administering an anti-histamine antibody |
US6946546B2 (en) * | 2000-03-06 | 2005-09-20 | Cambridge Antibody Technology Limited | Human antibodies against eotaxin |
US7094409B2 (en) * | 2001-01-19 | 2006-08-22 | Cytos Biotechnology Ag | Antigen arrays for treatment of allergic eosinophilic diseases |
US7264810B2 (en) * | 2001-01-19 | 2007-09-04 | Cytos Biotechnology Ag | Molecular antigen array |
EP1443960B1 (en) * | 2001-11-07 | 2008-12-31 | Cytos Biotechnology AG | Antigen arrays presenting il-5, il-13 or eotaxin for treatment of allergic eosinophilic diseases |
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JP7049006B2 (ja) | 2018-04-23 | 2022-04-06 | エル-ベース カンパニー リミテッド | 細胞における自食作用抑制用組成物、及びこれを含む腫瘍性疾患の予防または治療用、あるいは抗がん剤の耐性抑制用薬学的組成物 |
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