JP5546448B2 - MHCクラスII分子に提示されるサーバイビン(Survivin)の部分ペプチドとその利用法 - Google Patents
MHCクラスII分子に提示されるサーバイビン(Survivin)の部分ペプチドとその利用法 Download PDFInfo
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- JP5546448B2 JP5546448B2 JP2010505933A JP2010505933A JP5546448B2 JP 5546448 B2 JP5546448 B2 JP 5546448B2 JP 2010505933 A JP2010505933 A JP 2010505933A JP 2010505933 A JP2010505933 A JP 2010505933A JP 5546448 B2 JP5546448 B2 JP 5546448B2
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Description
a)配列番号17に示されるアミノ酸配列;
b)配列番号17に示されるアミノ酸配列のN末端及び/又はC末端に任意のアミノ酸が1〜数十個付加されたアミノ酸配列;
c)配列番号17に示されるアミノ酸配列のN末端の1〜4アミノ酸が欠失したアミノ酸配列;
d)配列番号17に示されるアミノ酸配列のC末端の1〜5アミノ酸が欠失したアミノ酸配列;
e)配列番号17に示されるアミノ酸配列の1〜数個のアミノ酸残基が置換及び/又は欠失したアミノ酸配列。
f)配列番号17に示されるアミノ酸配列の1〜数個のアミノ酸残基が置換及び/又は欠失したアミノ酸配列のN末端及び/又はC末端に任意のアミノ酸が1〜数十個付加されたアミノ酸配列;
g)配列番号17に示されるアミノ酸配列のN末端及び/又はC末端の1〜5アミノ酸が欠失したアミノ酸配列においてさらに1〜数個のアミノ酸残基が置換したアミノ酸配列。
c)配列番号17に示されるアミノ酸配列のN末端の1〜4アミノ酸が欠失したアミノ酸配列;
d)配列番号17に示されるアミノ酸配列のC末端の1〜5アミノ酸が欠失したアミノ酸配列;
e)配列番号17に示されるアミノ酸配列の1〜数個のアミノ酸残基が置換及び/又は欠失したアミノ酸配列;
f)配列番号17に示されるアミノ酸配列の1〜数個のアミノ酸残基が置換及び/又は欠失したアミノ酸配列のN末端及び/又はC末端に任意のアミノ酸が1〜数十個付加されたアミノ酸配列;
g)配列番号17に示されるアミノ酸配列のN末端及び/又はC末端の1〜5アミノ酸が欠失したアミノ酸配列においてさらに1〜数個のアミノ酸残基が置換したアミノ酸配列。
HLAの遺伝子型がHLA−DRB1*0101/HLA−DRB1*0901である健常人Xの末梢血より、ファイコール (Ficoll−Paque PLUS; GE HealThcare社)重層法を用いてperipheral blood mononuclear cell(以下PBMCと表す)を分離した。PBMC(2×106cells/well)を24穴プレートに播き、recombinant IFN−γ(最終濃度10ng/mL)を添加した5%ヒト血清含有培地(5% human serum in AIM−V 1mLにて、37℃、CO2インキュベーター内で培養した。2時間後、マイトマイシンC(MMC、協和発酵工業社)にて45分間処理し、PBMCを不活化させた。MMCの洗浄後に残った付着性PBMCを、単球由来抗原提示細胞(PBMC−Ad)とした。さらに、PBMC−Adを誘導する際に得られた非付着性PBMC(PBMC−nonAd)からEasy Sep(VERITAS社)を用いてCD4陽性T細胞を得た。
本実施例2)で調製したPBMC−AdとCD4陽性T細胞(1×106cells/well)とを、本実施例1)で作製したSurvivinオーバーラッピングペプチドを5種類ずつ混合したペプチド(MIX1〜5、最終濃度10μg/mL)存在下で5% human serum in AIM−V 1mLにて、37℃、CO2インキュベーター内で共培養を開始した。
本実施例3)で得られたMIX4に特異的に反応するSur/Th細胞を含むTh細胞群を用いて、ポリペプチドの同定を行った。
1)HLA拘束性の確認
実施例1の4)で得られたSU18に特異的に反応するSur/Th細胞を含むTh細胞群と阻害抗体とを用いて、SU18に対するHLA拘束性を確認した。
実施例1の2)で末梢血を採取した健常人のHLAの遺伝子型がHLA−DRB1*0101及びHLA−DRB1*0901であることから、実施例1の4)で得られたSU18に特異的に反応するSur/Th細胞を含むTh細胞群に対するアロジェニックな抗原提示細胞を用いて、HLA−DR拘束性を確認した。
実施例1の4)で得られたSU18に特異的に反応するSur/Th細胞を含むTh細胞群と、表2に示した刺激用ペプチドであるオーバーラッピングペプチドT1〜T11とを用いて、SU18の部分欠損における認識部位を確認した。
1)Sur/Th細胞を含むTh細胞群の樹立
実施例1の2)及び3)に記載された方法に従って28日間の共培養を行って、HLAの遺伝子型がHLA−DRB1*1201/HLA−DRB1*1502である健常人の末梢血から、Sur/Th細胞を含むTh細胞群を調製した。さらに、単一細胞群を樹立するために96穴Uプレートにヒト血清とウシ胎児血清の混合培地(2.5% human serum、2.5% fetal calf serum in AIM−V)200μL、PBMC−Ad(5×104cells/well)、recombinant IL−2(最終濃度20U/mL)、recombinant IL−7(最終濃度10ng/mL)、及びphytohemagglutinin(PHA、SEIKAGAKU Co.、最終濃度5μg/mL)を含む培地を用意し、前記Th細胞群(1cell/well)を加えて、37℃、CO2インキュベーター内で共培養を行なった。
本実施例1で調製したSur/Th細胞クローンと、表3に示したT1〜T10を刺激用ペプチドとを用いて、以下に示すELISPOTassayによりSU18の部分欠損における認識部位を確認した。
1)HLA拘束性の確認
HLAの遺伝子型がHLA−DQB1*0302/HLA−DQB1*0601である健常人Yの末梢血より、実施例1の2)と同様の手法によってCD4陽性T細胞を調製し、実施例1の3)及び4)と同様の手法によってSU18に特異的に反応するSur/Th細胞を含むTh細胞群を得た。このSU18に特異的に反応するSur/Th細胞群と阻害抗体とを用いて、SU18に対するHLA拘束性を確認した。
本実施例1)で得られたSU18に特異的に反応するSur/Th細胞を含むTh細胞群に対するアロジェニックな抗原提示細胞を用いて、HLA−DQ拘束性を確認した。
本実施例1)で得られたSU18に特異的に反応するSur/Th細胞を含むTh細胞群と、表4に示す刺激用ペプチドである、SU18の各アミノ酸をアラニン(A)又はグリシン(G)で置換した部分置換ペプチドS1〜S17とを用いて、SU18の部分置換における認識部位を確認した。
Claims (7)
- 下記のa)〜d)のいずれかのアミノ酸配列からなり、かつ配列番号17に示されるアミノ酸配列からなるポリペプチドをHLAの遺伝子型がHLA−DRB1*0101又はHLA−DQB1*0601の抗原提示細胞及びCD4陽性細胞とインキュベーションすることで誘導された、サーバイビン又は配列番号56に示されるアミノ酸配列からなるサーバイビン−2Bに特異的なTh細胞にサイトカインを産生させる活性を有するポリペプチド。
a)配列番号17に示されるアミノ酸配列;
b)配列番号17に示されるアミノ酸配列のN末端及び/又はC末端に任意のアミノ酸が1〜30付加されたアミノ酸配列(ただしEEHKKHSSGCAFLSVKKQFEELTLGEFLKLDRERであるアミノ酸配列を除く);
c)配列番号17に示されるアミノ酸配列のN末端の1〜3アミノ酸及び/又はC末端の1アミノ酸が欠失したアミノ酸配列;及び
d)配列番号17に示されるアミノ酸配列のN末端から1〜3、6、8及び10〜19番目のいずれかにおいて1個のアミノ酸残基が置換されたアミノ酸配列。 - b)〜d)のアミノ酸配列からなるポリペプチドが、配列番号17に示されるアミノ酸配列からなるポリペプチドが有するエピトープであって、CD4陽性T細胞からサーバイビン又は配列番号56に示されるアミノ酸配列からなるサーバイビン−2Bに特異的なTh細胞を誘導する当該エピトープを有するポリペプチドである、請求項1に記載のポリペプチド。
- 請求項1又は2に記載のポリペプチドをコードする核酸。
- 請求項3に記載の核酸を含むベクター。
- 請求項1又は2に記載のポリペプチドの少なくとも一種以上を有効成分とする、悪性新生物免疫治療用ワクチン。
- 請求項1又は2に記載のポリペプチドの少なくとも一種以上と抗原提示細胞とCD4陽性T細胞とをインビトロでインキュベーションする工程を含む、サーバイビン又は配列番号56に示されるアミノ酸配列からなるサーバイビン−2Bに特異的なTh細胞を誘導する方法。
- 請求項1又は2に記載のポリペプチドと請求項6に記載の方法で誘導されたサーバイビン又は配列番号56に示されるアミノ酸配列からなるサーバイビン−2Bに対して特異的なTh細胞とを含む、悪性新生物治療剤。
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US10293035B2 (en) * | 2014-03-28 | 2019-05-21 | University Of Washington Through Its Center For Commercialization | Breast and ovarian cancer vaccines |
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AU2009232774B2 (en) | 2014-05-29 |
CA2719964A1 (en) | 2009-10-08 |
US20160193314A1 (en) | 2016-07-07 |
EP2270144B1 (en) | 2017-07-26 |
EP2270144A1 (en) | 2011-01-05 |
KR101648146B1 (ko) | 2016-08-16 |
WO2009123188A1 (ja) | 2009-10-08 |
US10172925B2 (en) | 2019-01-08 |
EP2270144B8 (en) | 2017-08-30 |
CN105330733A (zh) | 2016-02-17 |
KR20160062223A (ko) | 2016-06-01 |
AU2009232774A1 (en) | 2009-10-08 |
US20110027303A1 (en) | 2011-02-03 |
SG188907A1 (en) | 2013-04-30 |
CN101981187A (zh) | 2011-02-23 |
KR20110005833A (ko) | 2011-01-19 |
JPWO2009123188A1 (ja) | 2011-07-28 |
CA2719964C (en) | 2016-10-04 |
HK1215264A1 (zh) | 2016-08-19 |
EP2270144A4 (en) | 2011-08-24 |
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