JP2005529065A - 疾患を治療するためのペプチド構築物 - Google Patents
疾患を治療するためのペプチド構築物 Download PDFInfo
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Abstract
Description
本発明は、AsnをAspで置き換えてderG(Asp Gly Gln Glu Glu Lys Ala Gly Val Val Ser Thr Gly Leu Ile−配列番号7)を形成することにより得られる修飾型異形(version)のペプチドG(Asn Gly Gln Glu Glu Lys Ala Gly Val Val Ser Thr Gly Leu Ile−配列番号5)が親分子より有意により強力な生物学的活性を有するという発見に部分的に基づく。該ペプチドは、前述されたところの複合化ペプチド(L.E.A.P.S.TM構築物)として供給されることと独立に免疫応答、とりわけCD4関連(細胞媒介性)応答を高める。イソアスパラギン酸はタンパク質中で天然に見出されないかもしくは遺伝暗号によりコードされないためそれは使用されない。従って、本発明は、免疫系を活性化するための医薬、アジュバント、免疫賦活剤もしくは免疫調節剤として有用な組成物の開発を可能にし、ここで組成物はペプチド、非ペプチド模倣物、もしくは脂肪族類、炭水化物、複素環類、芳香族類、置換された形態およびそれらの混合物から選択される有機分子であってよい。
配列番号1〜28に示されるところのアミノ酸配列を含んでなる単離されたポリペプチド;
配列番号1〜28に示されるところのポリペプチドを含んでなる単離されたポリペプチド;
マイクロアレイ技術を使用して配列番号1〜28を評価する段階を含んでなる予防薬もしくは治療薬であると免疫調節剤を判定する方法;
治療の必要な動物に配列番号1〜28に示されるところのポリペプチドを投与することを含んでなる癌、自己免疫もしくは移植状態の治療方法;
マイクロアレイ技術を使用して配列番号1〜28を評価する段階を含んでなる癌、自己免疫および移植片拒絶状態に用途をもつ予防薬もしくは治療薬であると免疫調節剤を判定する方法;治療の必要な動物に配列番号1〜28に示されるところのポリペプチドを投与することを含んでなる外来(すなわち非自己)真核生物体により引き起こされる感染状態もしくはアレルギーの治療方法;
マイクロアレイ技術を使用して配列番号1〜28を評価する段階を含んでなる外来(すなわち非自己)真核生物体により引き起こされる感染状態もしくはアレルギーを治療するための予防薬もしくは治療薬であると免疫調節剤を判定する方法;
治療の必要な動物に配列番号1〜28に示されるところのポリペプチドを投与することを含んでなる寄生生物体により引き起こされる感染状態もしくはアレルギーの治療方法;
治療の必要な動物に配列番号1〜28に示されるところのポリペプチドを投与することを含んでなる細菌のウイルス、ファージおよびプリオンのような原核生物体もしくは非生存病原体により引き起こされる感染状態の治療方法;ならびに
マイクロアレイ技術を使用して配列番号1〜28を評価する段階を含んでなる細菌のウイルス、ファージおよびプリオンのような原核生物体もしくは非生存病原体により引き起こされる疾患もしくは感染状態の治療における応用を伴う予防薬もしくは治療薬であると免疫調節剤を判定する方法
を包含する。
[発明の詳細な説明]
背景
L.E.A.P.S.TM構築物はT細胞結合リガンド(TCBL)と称される別のペプチドに結合された抗原性ペプチド(Ag)を包含する。本複合体は共刺激シグナルを送達すると同時に抗原の提示を起こさせる。ミョウバン、MPL S/ETM(「リピドA」)、ムラミルジペプチド(「MDP」)もしくは他のサポニン誘導体のようなアジュバント、ならびにPLGおよびQS21のような小分子量の実体が、免疫応答を向上させるために抗原とともに使用されている。
腫瘍系でのderGの保護効果
derGが腫瘍系に対するそれ自身の免疫賦活もしくはアジュバント特性を有するかもしれないことの確認を実施例の実施例1に示す。多くの癌が類似の夥しい抗原および突然変異を発現し、ワクチンは共有される抗原に基づく。従って、同一の癌からの同種異系腫瘍でワクチン接種することにより、T細胞応答はワクチンと患者自身の腫瘍との間で共有される抗原により刺激されうる。
マラリアL.E.A.P.S.TM構築物およびderG TCBL
添加物としてもしくは免疫賦活剤として使用される場合のTCBLの生物学的活性の評価は、実施例の実施例2および3に示されるところのマラリア保護アッセイで所望の結果を示した。単一種に複合化した抗原およびペプチドG MHC−II β134−138は保護的有効性の実質的改善を示した。
感染のHSV−1および乱切帯状疱疹様拡大(Zosteriform Spread)モデル
HSV感染の帯状疱疹様拡大モデルが抗ウイルス薬およびワクチンの有効性を評価し、ここで、改良動物モデルは神経侵襲性と非神経侵襲性ウイルスの間を区別する。感染の乱切(表皮剥脱)帯状疱疹様拡大モデルはCEL−1000(derG)がA/Jマウスを致死的HSV−1攻撃から保護することを明瞭に示した。
ペプチド構築物
本出願で開示されるペプチドについて、そのアミノ酸配列を以下のような一文字および三文字識別記号により示す:
群1
ペプチド(1種もしくは複数)のカルボキシルペプチダーゼに対する感受性を低下させるためのカルボキシル末端のアミド化もしくはエステル化の使用。
ある種の複合物において複合および間隔を空けることを助長するためにカルボキシル端に数個のアミノ酸例えばGGG(しかしそれに制限されない)を付加する。
アミノ末端のアミノ酸をより安定なもの(NからD)に変更する、もしくはグリシンに隣接の場合にアミノ末端を不安定なアスパラギンからアスパラギン酸に変更する。
以下のペプチドで示されるとおり、アミノ末端のアミノ酸のアセチル化、プロピオニル化、ブロモもしくはクロロを使用してin vivoでのタンパク質分解を低下させ、そして従って半減期を増大させる:
群5
Bにより表されるアミノ酸類似物(米国特許第US 5,736,412号明細書を参照されたい)シクロヘキシルアラニンを使用して迅速なタンパク質分解の可能性を低下させる。
添付される配列表に同定されるCD4分子への結合を増大させるCD4と相互作用する部位での置換を使用する。類似の型のアミノ酸での保存的置換をグループ分けから以下のとおり列挙する。同一の範疇内だがしかし異なるレベルの場合、それらは保存的置換とみなされない。
とりわけプロテアーゼ感受性の場合(とりわけアルギニン、リシンもしくはシステイン)にCD4と相互作用しない部位での置換を使用し、また、置換ε−アミノ(メチル、アルキル)リシンもしくはヒドロキシルロイシンもしくはロイシンのような類似物の使用によりリシンについて他の保存的置換を利用する。
上の配列番号1〜10の短縮形を使用する。
本実施例は図1に示されるところの本発明のペプチド構築物を利用する癌ワクチンの改良された有効性を示す。
1)7匹のマウスの8群に図1に示されるところのワクチン200μlを注入した。
2)これを7日後に反復した。
3)さらに7日後に、マウスをワクチン接種に対して反対側で5×104の生存B16を含有する200μlの生理的食塩水で攻撃した。
4)腫瘍の大きさがいずれかの軸で15mmを越えた場合にマウスを殺した。
実施例2
本実施例は類似のペプチド構築物および慣習的ペプチド免疫原性担体構築物と比較した本発明のペプチド構築物の改良された生物学的活性を示す。
derGは単独でマラリア抗原の非存在下でのマウスマラリア(Plasmodium yoelii)スポロゾイト攻撃に対しA/Jマウスを保護することが可能であったため、類似の実験を3種の他のマウス系統すなわちBALB/c(H2d)、C3H/HeJ(H2K)およびハイブリッドCAF1(A/J×BALB/c)で実施してderGの保護的有効性を評価した。
HSV感染の帯状疱疹様拡大モデルは抗ウイルス薬およびワクチンの有効性を評価し、ここで、改良動物モデルは神経侵襲性と非神経侵襲性のウイルスの間を区別する。感染の乱切(表皮剥脱)帯状疱疹様拡大モデルはCEL−1000(derG)がA/Jマウスを致死的HSV−1攻撃から保護することを明瞭に示す。
実施例5
本実施例は、以下のとおり修飾された形態のderGの異なるロットを誘導することにより、2種の異なる分子形態のderGの有効性を評価した。
本実施例はボツリスム(Botulism)神経毒(BoNT)組換えH鎖カルボキシルフラグメント(Hc)抗原(AもしくはEいずれかの型を表す)よりなるタンパク質ワクチンに対する免疫応答の発生を加速しかつ高めるderGの能力を示すことができる。
Claims (12)
- 配列番号1〜28に示されるところのアミノ酸配列を含んでなる単離されたポリペプチド。
- 請求項1記載の単離されたポリペプチドおよび最低1種の生理学的に許容できる賦形剤。
- 請求項1記載の単離されたポリペプチドおよび最低1種の抗原。
- 請求項1記載の単離されたポリペプチドおよび最低1種のアジュバント。
- 配列番号5〜28に示されるところのアミノ酸配列を含んでなる、請求項1記載の単離されたポリペプチド。
- 配列番号1〜28に示されるところのポリペプチドを含有する製薬学的組成物。
- 請求項6記載の製薬学的組成物および最低1種の生理学的に許容できる賦形剤。
- 請求項6記載の製薬学的組成物および最低1種の抗原。
- 請求項6記載の製薬学的組成物および最低1種のアジュバント。
- 組成物がワクチンである請求項6記載の製薬学的組成物。
- 配列番号5〜28に示されるところのアミノ酸配列を含んでなる請求項6記載の製薬学的組成物。
- マイクロアレイ技術を使用して配列番号1〜28を評価する段階を含んでなる、予防薬もしくは治療薬であると免疫調節剤を判定する方法。
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| WO2001036448A2 (en) * | 1999-10-27 | 2001-05-25 | Cel-Sci Corporation | Preparation and composition of peptides useful for treatment of autoimmune and transplant related graft versus host conditions |
| AU4705201A (en) * | 1999-10-27 | 2001-06-25 | Cel-Sci Corporation | Peptide constructs for treating autoimmune and related diseases |
| US20020164331A1 (en) * | 2000-06-19 | 2002-11-07 | Exley Mark A. | Compositions and methods of monoclonal and polyclonal antibodies specific for T cell subpopulations |
| US20070003542A1 (en) * | 2002-01-23 | 2007-01-04 | Daniel Zimmerman | Methods for treating diseases or conditions with peptide constructs |
-
2003
- 2003-01-23 EP EP03732027A patent/EP1476177A4/en not_active Withdrawn
- 2003-01-23 JP JP2003561536A patent/JP2005529065A/ja active Pending
- 2003-01-23 WO PCT/US2003/001819 patent/WO2003061590A2/en not_active Ceased
- 2003-01-23 US US10/502,331 patent/US20060134126A1/en not_active Abandoned
- 2003-01-23 AU AU2003210594A patent/AU2003210594A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1476177A4 (en) | 2005-10-05 |
| US20060134126A1 (en) | 2006-06-22 |
| WO2003061590A3 (en) | 2003-11-27 |
| WO2003061590A2 (en) | 2003-07-31 |
| AU2003210594A1 (en) | 2003-09-02 |
| EP1476177A2 (en) | 2004-11-17 |
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