JP7331207B2 - 癌治療のための免疫原性化合物 - Google Patents
癌治療のための免疫原性化合物 Download PDFInfo
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- JP7331207B2 JP7331207B2 JP2022096260A JP2022096260A JP7331207B2 JP 7331207 B2 JP7331207 B2 JP 7331207B2 JP 2022096260 A JP2022096260 A JP 2022096260A JP 2022096260 A JP2022096260 A JP 2022096260A JP 7331207 B2 JP7331207 B2 JP 7331207B2
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Description
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る核酸、又は
- 本発明に係る免疫原性組成物。
PepNt-CORE-PepCt (I) 式中、
-「PepNt」は、0~30のアミノ酸残基のアミノ酸長を有するポリペプチドからなり、式(I)のポリペプチドのN末端に位置し;
-COREは、配列番号1~106(配列番号71を含む)からなる群から選択されるアミノ酸配列、特に、配列番号26、28、47、51、52、55、56、77、93、101、又は102のいずれかで表されるアミノ酸配列、又は17、31、32、51、52、55、56、59、68、89、94、100、101、又は102のいずれかで表されるアミノ酸配列、例えば、51、52、55、56、101、又は102のいずれかで表されるアミノ酸配列を含む又はからなるポリペプチドからなり;及び
-「PepCt」は、0~30のアミノ酸残基のアミノ酸長を有し、式(I)のポリペプチドのC末端に位置するポリペプチドからなる。
- 本発明に係る免疫原性化合物の少なくとも1つ、又は
- 本発明に係る抗原性ペプチドの少なくとも1つ、及び任意にアジュバント。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、又は
- 本発明に係る核酸、及び
1以上の薬学的に許容される賦形剤。
(i)本発明に係る2つの異なる免疫原性化合物;
(ii)本発明に係る2つの異なる抗原性ペプチド;
(iii)本発明に係る2つの異なるナノ粒子;又は
(iv)本発明に係る2つの異なる核酸。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係る(宿主)細胞、
- 本発明に係るナノ粒子、
- 本発明に係る核酸、又は
- 本発明に係る免疫原性組成物。
- 配列番号1~106からなる群において選択される抗原性ペプチド;及び/又は
- 本明細書に記載の式(I)、又は(Ia)、又は(Ib)の抗原性ペプチド。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係る(宿主)細胞、
- 本発明に係るナノ粒子、
- 本発明に係る核酸、又は
- 本発明に係る免疫原性組成物。
特段の断りがない限り、<<抗原性ペプチド>>に言及している全ての箇所は、<<免疫原性化合物>>にも適用され得る。
- 遺伝子PLIN2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号1からなる群において選択される;
- 遺伝子ALDH1A1によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号2~3からなる群において選択される;
- 遺伝子AFPによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号4~5からなる群において選択される;
- 遺伝子PTPRCによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号6~11からなる群において選択される;
- 遺伝子CEACAM5によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号12~25からなる群において選択される;
- 遺伝子ENAHによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号26からなる群において選択される;
- 遺伝子EZH2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号27からなる群において選択される;
- 遺伝子PMELによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号28からなる群において選択される;
- 遺伝子ERBB2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号29~70からなる群において選択される;
- 遺伝子IL13RA2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号71からなる群において選択される;
- 遺伝子MAGEA1によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号72からなる群において選択される;
- 遺伝子MAGEA3によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号73~75からなる群において選択される;
- 遺伝子MAGEA4によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号76からなる群において選択される;
- 遺伝子MAGEC1によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号77~80からなる群において選択される;
- 遺伝子MAGEC2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号81~85からなる群から選択される;
- 遺伝子SCGB2A2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号86~87からなる群において選択される;
- 遺伝子MLANAによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号88~89からなる群において選択される;
- 遺伝子MDKによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号90~91からなる群において選択される;
- 遺伝子MMP2によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号92~93からなる群において選択される;
- 遺伝子CTAG1Bによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号94からなる群において選択される;
- 遺伝子ACPPによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号95~99からなる群において選択される;
- 遺伝子STEAP1によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号100~102からなる群において選択される;
- 遺伝子TAG1によってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号103~105からなる群において選択される;
- 遺伝子TYRによってコードされる腫瘍抗原とアミノ酸類似性を有するペプチドであって、前記抗原性ペプチドは、配列番号106からなる群において選択される。
- ファミリー<<SVASTITGV>>(配列番号107)、このファミリーは、配列番号1のアミノ酸配列を含む;
- ファミリー<<LLYKLADLI>>(配列番号108)、このファミリーは、配列番号2~3のアミノ酸配列を含む;
- ファミリー<<QLAVSVILRV>>(配列番号109)、このファミリーは、配列番号4~5のアミノ酸配列を含む;
- ファミリー<<KFLDALISL>>(配列番号110)、このファミリーは、配列番号6~11のアミノ酸配列を含む;
- ファミリー<<GVLVGVALI>>(配列番号111)、このファミリーは、配列番号12~24のアミノ酸配列を含む;
- ファミリー<<HLFGYSWYK>>(配列番号112)、このファミリーは、配列番号25のアミノ酸配列を含む;
- ファミリー<<TMNGSKSPV>>(配列番号113)、このファミリーは、配列番号26のアミノ酸配列を含む;
- ファミリー<<FMVEDETVL>>(配列番号114)、このファミリーは、配列番号27のアミノ酸配列を含む;
- ファミリー<<ITDQVPFSV>>(配列番号115)、このファミリーは、配列番号28のアミノ酸配列を含む;
- ファミリー<<IISAVVGIL>>(配列番号116)、このファミリーは、配列番号29~40のアミノ酸配列を含む;
- ファミリー<<ILHNGAYSL>>(配列番号117)、このファミリーは、配列番号41のアミノ酸配列を含む;
- ファミリー<<KIFGSLAFL>>(配列番号118)、このファミリーは、配列番号42~43のアミノ酸配列を含む;
- ファミリー<<PLTSIAISV>>(配列番号119)、このファミリーは、配列番号44~46のアミノ酸配列を含む;
- ファミリー<<RLLQETELV>>(配列番号120)、このファミリーは、配列番号47のアミノ酸配列を含む;
- ファミリー<<TLEEITGYL>>(配列番号121)、このファミリーは、配列番号48~50のアミノ酸配列を含む;
- ファミリー<<VVLGVVFGI>>(配列番号122)、このファミリーは、配列番号51~70のアミノ酸配列を含む;
- 配列番号71を含むファミリー<<WLPFGFILI>>(配列番号123);
- ファミリー<<KVLEYVIKV>>(配列番号124)、このファミリーは、配列番号72のアミノ酸配列を含む;
- ファミリー<<EVDPIGHLY>>(配列番号125)、このファミリーは、配列番号73~74のアミノ酸配列を含む;
- ファミリー<<VAELVHFLL>>(配列番号126)、このファミリーは、配列番号75のアミノ酸配列を含む;
- ファミリー<<EVDPASNTY>>(配列番号127)、このファミリーは、配列番号76のアミノ酸配列を含む;
- ファミリー<<KVVEFLAML<<(配列番号128)、このファミリーは、配列番号77のアミノ酸配列を含む;
- ファミリー<<SFSYTLLSL<<(配列番号129)、このファミリーは、配列番号78~79のアミノ酸配列を含む;
- ファミリー<<VSSFFSYTL>>(配列番号130)、このファミリーは、配列番号80のアミノ酸配列を含む;
- ファミリー<<ALKDVEERV>>(配列番号131)、このファミリーは、配列番号81~83のアミノ酸配列を含む;
- ファミリー<<ASSTLYLVF>>(配列番号132)、このファミリーは、配列番号84~85のアミノ酸配列を含む;
- ファミリー<<PLLENVISK>>(配列番号133)、このファミリーは、配列番号86~87のアミノ酸配列を含む;
- ファミリー<<ILTVILGVL>>(配列番号134)。このファミリーは、配列番号88~89のアミノ酸配列を含む;
- ファミリー<<ALLALTSAV>>(配列番号135)、このファミリーは、配列番号90~91のアミノ酸配列を含む;
- ファミリー<<GLPPDVQRV>>(配列番号136)、このファミリーは、配列番号92~93のアミノ酸配列を含む;
- ファミリー<<LAMPFATPM>>(配列番号137)、このファミリーは、配列番号94のアミノ酸配列を含む;
- ファミリー<<ALDVYNGLL>>(配列番号138)、このファミリーは、配列番号95~97のアミノ酸配列を含む;
- ファミリー<<FLFLLFFWL>>(配列番号139)、このファミリーは、配列番号98のアミノ酸配列を含む;
- ファミリー<<TLMSAMTNL>>(配列番号140)、このファミリーは、配列番号99のアミノ酸配列を含む;
- ファミリー<<MIAVFLPIV>>(配列番号141)、このファミリーは、配列番号100~102のアミノ酸配列を含む;
- ファミリー<<SLGWLFLLL>>(配列番号142)、このファミリーは、配列番号103~105のアミノ酸配列を含む;
- ファミリー<<MLLAVLYCL>>(配列番号143)、このファミリーは、配列番号106のアミノ酸配列を含む。
PepNt-CORE-PepCt (I) 式中、
-「PepNt」は、0~500のアミノ酸残基のアミノ酸長を有するポリペプチドからなり、式(I)のポリペプチドのN末端に位置し;
-COREは、配列番号1~106(配列番号71を含む)からなる群から選択されるアミノ酸配列、特に、配列番号26、28、47、51、52、55、56、77、93、101、又は102のいずれかで表されるアミノ酸配列、又は17、31、32、51、52、55、56、59、68、89、94、100、101、又は102のいずれかで表されるアミノ酸配列、例えば、配列番号51、52、55、56、101、又は102のいずれかで表されるアミノ酸配列を含む又はからなるポリペプチドからなり;及び
-「PepCt」は、0~500のアミノ酸残基のアミノ酸長を有し、式(I)のポリペプチドのC末端に位置するポリペプチドからなる。
PepNt-CORE(Ia);又は
CORE-PepCt(1b)。
式中、「PepNt」及び「PepCt」及びCOREは、上で定義した通りである。
式中、
-R1は、アミン含有担体タンパク質の1つの反応性基からなり、それに結合したNH基は、(i)アミン含有担体タンパク質のN末端に位置するアルファアミノ基、又は(ii)アミン含有担体タンパク質のリジン(K)アミノ酸残基からの側鎖アミノ基に由来する。
-R2は、式(I)のペプチドからなり、それに結合した硫黄(S)原子は、式(I)のペプチドのN-末端又はC-末端に位置するシステイン残基のスルフヒドリル(SH)基に由来する。いくつかの実施形態において、スルフヒドリル部分は、非天然アミノ酸、又は式(I)のペプチドの末端に存在する任意の他の分子の一部であり得る。
式中、
-R1は、アミン含有担体タンパク質の1つの反応性基からなり、それに結合したNH基は、(i)アミン含有担体タンパク質のN末端に位置するアルファアミノ基、又は(ii)アミン含有担体タンパク質のリジン(K)アミノ酸残基からの側鎖アミノ基に由来する。
-R2は、式(I)のペプチドからなり、それに結合した硫黄(S)原子は、式(I)のペプチドのN-末端又はC-末端に位置するシステイン残基のスルフヒドリル(SH)基に由来する。いくつかの実施形態において、スルフヒドリル部分は、非天然アミノ酸、又は式(I)のペプチドの末端に存在する任意の他の分子の一部であり得る。
- 本発明に係る免疫原性化合物の少なくとも1つ、又は
- 本発明に係る抗原性ペプチドの少なくとも1つ、及び任意にアジュバント。
本発明に係る免疫原性組成物は、以下の少なくとも1つを含む:
- 本発明に係る抗原性ペプチド、
- 本発明に係る免疫原性化合物、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、又は
- 本発明に係る宿主細胞。
(i)本発明に係る2つの異なる免疫原性化合物;
(ii)本発明に係る2つの異なる抗原性ペプチド;
(iii)本発明に係る2つの異なるナノ粒子;又は
(iv)本発明に係る2つの異なる核酸。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、
- 本発明に係る宿主細胞、又は
- 本発明に係る免疫原性組成物。
前記のように、本発明の組成物は、治療目的、特にそれを必要とする患者において癌を予防又は治療するために特定の腫瘍抗原/タンパク質に対して特異的免疫応答を引き起こすために特に有用であり得る。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、
- 本発明に係る宿主細胞、
- 本発明に係る免疫原性組成物、又は
- 本明細書に記載の本発明に係る組合せ。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、
- 本発明に係る宿主細胞、
- 本発明に係る免疫原性組成物、又は
- 本明細書に記載の本発明に係る組合せ。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、
- 本発明に係る宿主細胞、
- 本発明に係る免疫原性組成物、又は
- 本明細書に記載の本発明に係る組合せ
を投与することを含む。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、
- 本発明に係る宿主細胞、
- 本発明に係る免疫原性組成物、又は
- 本明細書に記載の本発明に係る組合せ
を医薬として使用することができる。
- 本発明に係る免疫原性化合物、
- 本発明に係る抗原性ペプチド、
- 本発明に係るナノ粒子、
- 本発明に係る細胞、
- 本発明に係る核酸、
- 本発明に係る宿主細胞、
- 本発明に係る免疫原性組成物、又は
- 本明細書に記載の本発明に係る組合せ
を、特に(癌)免疫療法のためのワクチンとして使用することができる。
特に本発明に係る方法及び使用において、本発明に係る抗原性ペプチド、本発明に係る免疫原性化合物、本発明に係るナノ粒子、本発明に係る細胞、本発明に係る核酸、本発明に係る宿主細胞、及び本発明に係る免疫原性組成物の投与は、単独で又は抗がん治療剤などの癌の治療及び/又は予防に有用な補助剤と組み合わせて実施することができる。
- 本発明に係る同一の免疫原性化合物又は本発明に係る異なる免疫原性化合物において、
- 本発明に係る同一のナノ粒子内、又は本発明に係る異なるナノ粒子内に(ロードされて)、
- 本発明に係る同一の細胞内、又は本発明に係る異なる細胞内に(ロードされて)、
- 本発明に係る同一の核酸によって、又は本発明に係る異なる核酸(によってコードされて)、
- 本発明に係る同一の宿主細胞によって、又は本発明に係る異なる宿主細胞(によって発現されて)、
- 本発明に係る同一の免疫原性組成物又は本発明に係る異なる免疫原性組成物(に含有されて)、
投与することができる。
(i)本発明に係る第1の抗原性ペプチドを含む本発明に係る免疫原性化合物、及び
(ii)本発明に係る第2の抗原性ペプチドを含む本発明に係る免疫原性化合物。
(i)本発明に係る第1の抗原性ペプチド、及び
(ii)本発明に係る第2の抗原性ペプチド。
(i)本発明に係る第1の抗原性ペプチドを含む本発明に係るナノ粒子、及び
(ii)本発明に係る第2の抗原性ペプチドを含む本発明に係るナノ粒子。
(i)本発明に係る第1の抗原性ペプチドをコードするポリヌクレオチドを含む本発明に係る核酸、及び
(ii)本発明に係る第1の抗原性ペプチドをコードするポリヌクレオチドを含む本発明に係る核酸。
実施例1及び2はいずれも、図1に記載される一般的なプロトコルに関連する。
実施例1:HLA-A*0201アレルに対して優れた親和性を有する候補抗原性ペプチドの同定
A1.T2細胞系統に対するペプチドの親和性の測定
実験プロトコルは、HLA-A*0201によって提示されたペプチドについて検証されたものと同様である(Tourdot et al., A general strategy to enhance immunogenicity of low-affinity HLA-A2.1-associated peptides: implication in the identification of cryptic tumor epitopes. Eur J Immunol. 2000 Dec; 30(12):3411-21)。ペプチドの親和性測定は、HLA-A*0201分子を発現するがTAP1/2陰性であり、内因性ペプチドを提示することができないヒト腫瘍細胞T2を用いて達成される。
各ペプチドは、アミノ酸組成を考慮することによって可溶化される。システイン、メチオニン、又はトリプトファンを含まないペプチドの場合、DMSOの添加は、全体積の最大10%まで可能である。他のペプチドを水又はPBS pH7.4に再懸濁する。
T2 ATCC細胞の場合:可変ペプチド濃度についての平均蛍光強度:対のIL13RA2ペプチド(IL13RA2-H及びIL13RA2-B)に関して、ヒトペプチドは、HLA-A*0201に強く結合する候補ペプチドIL13RA2-Bとは反対にHLA-A*0201に結合しないようである:100μMで112.03対18.64;10μMで40.77対11.61;1μMで12.18対9.41;0.1μMで9.9対7.46。
A.1 マウスモデル
使用したモデルの特徴を表2に概説する。
免疫感作スキームを図2に示す。簡潔に述べると、14頭のβ/A2/DR3マウスを無作為に(マウスの性別及び年齢に基づいて)2つの実験群に割り当て、それぞれを共通のヘルパーペプチド(h-pAg)と組み合わせられる特定のワクチン接種ペプチド(vacc-pAg)で免疫した(以下の表3に概説される)。vacc-pAgを対で比較した(群1対群2)。これにより、単一のペプチドの天然型と最適化型の両方を各群で比較した。
・vacc-pAgの対:IL13RA2-H及びIL13RA2-B;いずれも、4mg/ml(4mM)の濃度で製造、提供。
・h-pAg:HHD-DR3;凍結乾燥し(50.6mg;Eurogentec batch 1611166)、10mg/mLの濃度で純蒸留水に再懸濁した。
・100μgのvacc-pAg(マウス1頭当たり4mg/mLストック25μL)。
・150μgのh-pAg(マウス1頭当たり10mg/mLストック15μL)。
・総容量が50μLになるようにPBSを10μL(マウス1頭当たり)。
・1:1(v:v)の比率(マウス1頭当たり50μL)で添加される不完全フロイントアジュバント(IFA)
追加免疫注射の7日後(即ち、d21)、動物を安楽死させ、脾臓を摘出した。脾細胞は、臓器を機械的に破砕した後、70μmフィルタリングFicoll密度勾配精製することによって調製した。
合計14頭のβ/A2/DR3マウスをこの実験に使用した(表6参照)。屠殺時に、脾臓T細胞群をフローサイトメトリーによって分析したところ、大多数がCD4+T細胞サブセットに属することが示された。
・群1(IL13RA2-B)/IL13RA2-B pAg:56.3%+/-18.1
・群1(IL13RA2-B)/IL13RA2-H pAg:32.3%+/-11.8
・群2(IL13RA2-H)/IL13RA2-B pAg:2.0%+/-0.8
・群2(IL13RA2-H)/IL13RA2-H pAg:1.1%+/-0.8
A1.T2細胞系統に対するペプチドの親和性の測定
実験プロトコルは、HLA-A*0201によって提示されたペプチドについて検証されたものと同様である(Tourdot et al., A general strategy to enhance immunogenicity of low-affinity HLA-A2.1-associated peptides: implication in the identification of cryptic tumor epitopes. Eur J Immunol. 2000 Dec; 30(12):3411-21)。ペプチドの親和性測定は、HLA-A*0201分子を発現するがTAP1/2陰性であり、内因性ペプチドを提示することができないヒト腫瘍細胞T2を用いて達成される。
各ペプチドは、アミノ酸組成を考慮することによって可溶化される。システイン、メチオニン、又はトリプトファンを含まないペプチドの場合、DMSOの添加は、全体積の最大10%まで可能である。他のペプチドを水又はPBS pH7.4に再懸濁する。
結果を表7に示す。
A1.T2細胞系統に対するペプチドの親和性の測定
実験プロトコルは、HLA-A*0201によって提示されたペプチドについて検証されたものと同様である(Tourdot et al., A general strategy to enhance immunogenicity of low-affinity HLA-A2.1-associated peptides: implication in the identification of cryptic tumor epitopes. Eur J Immunol. 2000 Dec; 30(12):3411-21)。ペプチドの親和性測定は、HLA-A*0201分子を発現するがTAP1/2陰性であり、内因性ペプチドを提示することができないヒト腫瘍細胞T2を用いて達成される。
各ペプチドは、アミノ酸組成を考慮することによって可溶化される。システイン、メチオニン、又はトリプトファンを含まないペプチドの場合、DMSOの添加は、全体積の最大10%まで可能である。他のペプチドを水又はPBS pH7.4に再懸濁する。
結果を表8に示す。
A1.T2細胞系統に対するペプチドの親和性の測定
実験プロトコルは、HLA-A*0201によって提示されたペプチドについて検証されたものと同様である(Tourdot et al., A general strategy to enhance immunogenicity of low-affinity HLA-A2.1-associated peptides: implication in the identification of cryptic tumor epitopes. Eur J Immunol. 2000 Dec; 30(12):3411-21)。ペプチドの親和性測定は、HLA-A*0201分子を発現するがTAP1/2陰性であり、内因性ペプチドを提示することができないヒト腫瘍細胞T2を用いて達成される。
各ペプチドは、アミノ酸組成を考慮することによって可溶化される。システイン、メチオニン、又はトリプトファンを含まないペプチドの場合、DMSOの添加は、全体積の最大10%まで可能である。他のペプチドを水又はPBS pH7.4に再懸濁する。
結果を表9に示す。
Claims (14)
- 配列番号71で表されるアミノ酸配列からなることを特徴とする抗原性ペプチド。
- 請求項1に記載の抗原性ペプチドを含む免疫原性化合物であって、
前記免疫原性化合物は、以下の式(I)の組換え融合タンパク質又は融合ペプチドであり、
前記免疫原性化合物は、IL13RA2に対する免疫応答を誘導する免疫原性化合物:
PepNt-CORE-PepCt (I) 式中、
-「PepNt」は、1~50のアミノ酸残基のアミノ酸長を有するポリペプチドからなり、式(I)のポリペプチドのN末端に位置し;
-COREは、配列番号71のアミノ酸配列からなるポリペプチドからなり;及び
-「PepCt」は、1~50のアミノ酸残基のアミノ酸長を有するポリペプチドからなり、式(I)のポリペプチドのC末端に位置する。 - -少なくとも請求項1に記載の抗原性ペプチド、又は
-少なくとも請求項2に記載の免疫原性化合物;
及び任意にアジュバントがロードされたことを特徴とするナノ粒子。 - 請求項1に記載の抗原性ペプチド、又は請求項2に記載の免疫原性化合物がロードされたことを特徴とする細胞。
- 以下をコードするポリヌクレオチドを含むことを特徴とする核酸:
-請求項1に記載の抗原性ペプチド;又は
-請求項2に記載の免疫原性化合物。 - 前記核酸が、DNA分子又はRNA分子であり、好ましくは、ゲノムDNA;cDNA;mRNA;発現エレメント、調節エレメント、及び/又はプロモーターを含む又は含まないRNA及び/又はDNA配列;それらの組合せから選択される請求項5に記載の核酸。
- 請求項1に記載の抗原性ペプチドをコードする配列を含み、該抗原性ペプチドを発現することを特徴とするベクター。
- 請求項5から6のいずれかに記載の核酸、又は請求項7に記載のベクターを含む宿主細胞であって、前記宿主細胞が、好ましくはベクターを含むことを特徴とする宿主細胞。
- -請求項1に記載の抗原性ペプチド、
-請求項2に記載の免疫原性化合物、
-請求項3に記載のナノ粒子、
-請求項4に記載の細胞、
-請求項5から6のいずれかに記載の核酸、
-請求項7に記載のベクター、又は
-請求項8に記載の宿主細胞、
及び1以上の薬学的に許容される賦形剤を含むことを特徴とする免疫原性組成物。 - 1以上の免疫刺激剤を更に含む請求項9に記載の免疫原性組成物。
- 薬としての使用のための、請求項1に記載の抗原性ペプチド、請求項2に記載の免疫原性化合物、請求項3に記載のナノ粒子、請求項4に記載の細胞、請求項5から6のいずれかに記載の核酸、請求項7に記載のベクター、請求項8に記載の宿主細胞、又は請求項9から10のいずれかに記載の免疫原性組成物。
- 癌の予防又は治療における使用のための、請求項1に記載の抗原性ペプチド、請求項2に記載の免疫原性化合物、請求項3に記載のナノ粒子、請求項4に記載の細胞、請求項5から6のいずれかに記載の核酸、請求項7に記載のベクター、請求項8に記載の宿主細胞、又は請求項9から10のいずれかに記載の免疫原性組成物。
- 異なる抗原性ペプチドを含むキットであって、下記の(i)と(ii)とを含むことを特徴とするキット:
(i)請求項1に記載の抗原性ペプチド
(ii)配列番号1から70及び72から106のいずれかで表されるアミノ酸配列を含む又はからなる抗原性ペプチドの少なくとも1つ。 - -請求項1に記載の抗原性ペプチド、
-請求項2に記載の免疫原性化合物、
-請求項3に記載のナノ粒子、
-請求項4に記載の細胞、
-請求項5から6のいずれかに記載の核酸、
-請求項7に記載のベクター、
-請求項8に記載の宿主細胞、又は
-請求項9から10のいずれかに記載の免疫原性組成物を含むことを特徴するキット。
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