JP2015508648A - ウイルス様粒子組成物 - Google Patents
ウイルス様粒子組成物 Download PDFInfo
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- JP2015508648A JP2015508648A JP2014557308A JP2014557308A JP2015508648A JP 2015508648 A JP2015508648 A JP 2015508648A JP 2014557308 A JP2014557308 A JP 2014557308A JP 2014557308 A JP2014557308 A JP 2014557308A JP 2015508648 A JP2015508648 A JP 2015508648A
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Abstract
Description
この出願は、2012年2月16日に出願された米国仮出願第61/599,746号の利益を主張し、その内容は参照により全体が本明細書に包含される。
本発明は、ポリペプチドと少なくとも1つの抗原を含む粒子およびそれをふくむ組成物に関する。
第一の局面において、本発明は、自己集合が可能な粒子であって、ポリペプチドと少なくとも1つの抗原とを含み、該ポリペプチドが少なくとも1つの第一付着部位を含み、かかる少なくとも1つの抗原が、少なくとも1つの第二付着部位を含み、該ポリペプチドと該抗原が、かかる少なくとも1つの第一付着部位および少なくとも1つの第二付着部位を介して結合している、粒子を提供する。
アルファウイルスおよびフラビウイルスの例としては、アウラウイルス、ババンキウイルス(Babanki virus)、バーマフォレストウイルス(Barmah Forest virus) (BFV)、ベバルウイルス、カバソウウイルス(Cabassou virus)、チクングニアウイルス(CHIKV)、東部ウマ脳炎ウイルス(EEEV)、エイラートウイルス(Eilat virus)、エバーグレードウイルス(Everglades virus)、フォートモーガンウイルス(Fort Morgan virus)、ゲタウイルス、ハイランドJウイルス(Highlands J virus)、キジラガチウイルス(Kyzylagach virus)、マヤロウイルス、メトリウイルス(Me Tri virus)、ミデルバーグウイルス(Middelburg virus)、モッソダスペドラスウイルス(Mosso das Pedras virus)、ムカンボウイルス、ヌドゥムウイルス、オニョンニョンウイルス、ピクスナウイルス、リオネグロウイルス、ロスリバーウイルス(RRV)、サケ膵臓病ウイルス(Salmon pancreas disease virus)、セムリキ森林ウイルス、シンドビスウイルス、ミナミゾウアザラシウイルス(Southern elephant seal virus)、トナテウイルス(Tonate virus)、トロカラウイルス(Trocara virus)、ウナウイルス、ベネズエラウマ脳炎ウイルス(VEEV)、西部ウマ脳炎ウイルス(WEEV)、ワタロアウイルス、ウエストナイルウイルス、デングウイルス、ダニ媒介性脳炎ウイルスおよび黄熱ウイルスが挙げられるが、これらに限定されない。
態様の一において、本発明は、チクングニアまたはベネズエラウマ脳炎ウイルス構造ポリペプチドと少なくとも1つの抗原とを含む、チクングニアウイルス様粒子またはベネズエラウマ脳炎ウイルス様粒子を提供し、ここで、該チクングニアウイルス構造ポリペプチドまたは該ベネズエラウマ脳炎ウイルス構造ポリペプチドは、少なくとも1つの第一付着部位を含み、かかる少なくとも1つの抗原は、少なくとも1つの第二付着部位を含み、ここで、該チクングニアまたはベネズエラウマ脳炎ウイルス構造ポリペプチドおよびかかる少なくとも1つの抗原は、かかる少なくとも1つの第一付着部位および第二付着部位を介して結合している。
i) チクングニアウイルス (CHIKV)由来のポリペプチドとTNF-α由来のポリペプチド;
ii) チクングニアウイルス (CHIKV) 由来のポリペプチドとCD20由来のポリペプチド;
iii) ベネズエラウマ脳炎ウイルス (VEEV)由来のポリペプチドとTNF-α由来のポリペプチド;または
iv) ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドとCD20由来のポリペプチド
v) ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドとCTLA4由来のポリペプチド。
i) 配列番号4で表されるアミノ酸配列からなる、チクングニアウイルス (CHIKV)由来のポリペプチドとTNF-α由来のポリペプチドの融合蛋白質;
ii) 配列番号5で表されるアミノ酸配列からなる、チクングニアウイルス (CHIKV)由来のポリペプチドとCD20由来のポリペプチドの融合蛋白質;
iii) 配列番号6で表されるアミノ酸配列からなる、ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドとTNF-α由来のポリペプチドの融合蛋白質; または
iv) 配列番号7で表されるアミノ酸配列からなる、ベネズエラウマ脳炎ウイルス (VEEV)由来のポリペプチドとCD20由来のポリペプチドの融合蛋白質;
v) 配列番号8で表されるアミノ酸配列からなる、ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドとCTLA4由来のポリペプチドの融合蛋白質。
第二の局面において本発明は、本発明の第一の局面にて提供する粒子をコードするヌクレオチド配列を含む核酸分子を提供する。
i) 配列番号13によって表されるヌクレオチド配列からなる、チクングニアウイルス (CHIKV) 由来のポリペプチドとTNF-α由来のポリペプチドの融合蛋白質をコードする核酸分子;
ii) 配列番号14によって表されるヌクレオチド配列からなる、チクングニアウイルス (CHIKV)由来のポリペプチドとCD20由来のポリペプチドの融合蛋白質をコードする核酸分子;
iii) 配列番号15によって表されるヌクレオチド配列からなる、ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドとTNF-α由来のポリペプチドの融合蛋白質をコードする核酸分子;
iv) 配列番号16によって表されるヌクレオチド配列からなる、ベネズエラウマ脳炎ウイルス(VEEV) 由来のポリペプチドとCD20由来のポリペプチドの融合蛋白質をコードする核酸分子; または
v) 配列番号17によって表されるヌクレオチド配列からなる、ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドとCTLA4由来のポリペプチドの融合蛋白質をコードする核酸分子。
第三の局面において、本発明は、本発明の第一の局面で提供する粒子および/または本発明の第二の局面で提供する核酸分子を含む組成物を提供する。
第四の局面において、本発明は、第一の局面において提供する粒子および/または本発明の第二の局面において提供する核酸分子を哺乳類に接触させることを含む、抗体の産生方法を提供する。
TNFαは天然の条件下では三量体で見られるため、チクングニアウイルス構造ポリペプチドと融合したTNFαポリペプチドのモノマーを、安定して発現させることは困難であると予測された。しかし、TNFαモノマーペプチド(TNFαモノマーペプチドの断片)が、チクングニアウイルス構造ポリペプチドと、TNFα由来のペプチドのN−末端およびC−末端のリンカーを介して融合している融合蛋白質を、TNFα由来ペプチドのチクングニアウイルス構造ポリペプチドへの付着に用いることにより、ウイルス構造ポリペプチドとTNFαモノマー由来ペプチドとを含むチクングニアウイルス様粒子の安定な発現が引き起こされた。
上記(1)によれば、ベネズエラウマ脳炎ウイルス構造ポリペプチをコードするポリヌクレオチドと融合した修飾TNFα由来ペプチドをコードするポリヌクレオチドを調製し(配列番号15参照)、発現ベクターを作製し、続いて293F細胞において遺伝子導入を行った。
マウスを3つの群に分けた (各群、n=5)。上述の(1)にしたがって作製したウイルス構造ポリペプチドとヒトTNFα由来ポリペプチドとを含むチクングニアウイルス様粒子(以降「CHIKV-TNFα」と呼ぶ)、ヒトTNFα由来ポリペプチドを含まないチクングニアウイルス様粒子(以降「CHIKV-VLP」と呼ぶ)、上述の(2)にしたがって作製した、ウイルス構造ポリペプチドとヒトTNFα由来ポリペプチドとを含むベネズエラウマ脳炎ウイルス様粒子(以降、「VEEV-TNFα」と呼ぶ)、ヒトTNFα由来ポリペプチドを含まないベネズエラウマ脳炎ウイルス様粒子(以降「VEEV-VLP」と呼ぶ) または溶媒 (すなわちPBS)を各群のマウスに筋肉内投与した。該マウスは、以下に記載するように、実験の最初(以降「0週目」と呼ぶ)および最初の投与から3週間後(以降「3週目」と呼ぶ)に投与を受けた: 群1: VEEV-TNFα (0週目)、CHIKV-TNFα (3週目); 群2: VEEV-VLP (0週目)、CHIKV-VLP (3週目); および群3: PBS (0週目)、PBS (3週目)。
上述の(1) および (2)にしたがって、VEEV-CD20 VLPを密度勾配遠心分離により精製し、CD20およびVEEVの断片の発現をウェスタンブロッティングにより確認した。CD20の断片であるIYNCEPANPSEKNSPSTQYCYSIQ (配列番号: 21)を、ベネズエラウマ脳炎ウイルス構造ポリペプチドに融合させて抗原として用いた。
CTLA4の断片: CKVELMYPPPYYLGIG(配列番号: 22) は、CTLA4アミノ酸配列全長に基づいて、ベネズエラウマ脳炎ウイルス構造ポリペプチドE2に挿入される断片の、N−末端残基とC−末端残基の間の空間距離がCLTA4結晶で測定した場合に約5.6Åになるように選択された。
ヒトCTLA4の全長をコードするポリヌクレオチドをVLP_VEEV VLP 518ベクターに導入しベネズエラウマ脳炎ウイルス構造ポリペプチドと融合したCTLA4の発現のためのプラスミドを作製した。
ウイルス構造ポリペプチドとヒトまたはマウスCD20の断片を含むチクングニアウイルス様粒子を、VLP_CHI 532ベクターおよびヒトまたはマウスTNFα抗体の断片を用いて作製した。ヒトおよびマウスTNFα抗体の断片は以下に記載する通りである: CD20 ヒト iyncepanpseknspstqycysiq (配列番号:21); CD20 マウス ydcepsnsseknspstqycnsi (配列番号:41)。
CD20 ヒト: SGGiyncepanpseknspstqycysiqGS (配列番号:42)
CD20 マウス バージョン2: SGydcepsnsseknspstqycnsiGGS (配列番号:43)
CD20 マウス バージョン3: SGGydcepsnsseknspstqycnsiGS (配列番号:44)。
Claims (40)
- ポリペプチドと少なくとも1つの抗原とを含む、自己集合が可能な粒子であって、該ポリペプチドが少なくとも1つの第一付着部位を含み、少なくとも1つの抗原が少なくとも1つの第二付着部位を含み、該ポリペプチドおよび該抗原が、かかる少なくとも1つの第一付着部位および第二付着部位を介して結合し、該抗原のN−末端残基とC−末端残基の間の空間距離が、該抗原または該抗原を含む天然起源の蛋白質またはその修飾蛋白質の結晶で測定した場合に30Å以下である、粒子。
- 該粒子がウイルス様粒子である、請求項1記載の粒子。
- ウイルス構造ポリペプチドと少なくとも1つの抗原とを含む粒子であって、該ウイルス構造ポリペプチドが少なくとも1つの第一付着部位を含み、少なくとも1つの抗原が少なくとも1つの第二付着部位を含み、該ウイルス構造ポリペプチドと該抗原が少なくとも1つの第一付着部位および少なくとも1つの第二付着部位を介して結合しており、該粒子がウイルス様粒子である、粒子。
- ウイルス様粒子がアルファウイルスまたはフラビウイルス由来である、請求項2または3記載の粒子。
- アルファウイルスまたはフラビウイルスが、アウラウイルス、ババンキウイルス(Babanki virus)、バーマフォレストウイルス(Barmah Forest virus) (BFV)、ベバルウイルス、カバソウウイルス(Cabassou virus)、チクングニアウイルス(CHIKV)、東部ウマ脳炎ウイルス(EEEV)、エイラートウイルス(Eilat virus)、エバーグレードウイルス(Everglades virus)、フォートモーガンウイルス(Fort Morgan virus)、ゲタウイルス、ハイランドJウイルス(Highlands J virus)、キジラガチウイルス(Kyzylagach virus)、マヤロウイルス、メトリウイルス(Me Tri virus)、ミデルバーグウイルス(Middelburg virus)、モッソダスペドラスウイルス(Mosso das Pedras virus)、ムカンボウイルス、ヌドゥムウイルス、オニョンニョンウイルス、ピクスナウイルス、リオネグロウイルス、ロスリバーウイルス(RRV)、サケ膵臓病ウイルス(Salmon pancreas disease virus)、セムリキ森林ウイルス、シンドビスウイルス、ミナミゾウアザラシウイルス(Southern elephant seal virus)、トナテウイルス(Tonate virus)、トロカラウイルス(Trocara virus)、ウナウイルス、ベネズエラウマ脳炎ウイルス(VEEV)、西部ウマ脳炎ウイルス(WEEV)、ワタロアウイルス、ウエストナイルウイルス、デングウイルス、ダニ媒介性脳炎ウイルスおよび黄熱ウイルスからなる群から選択される、請求項4記載の粒子。
- アルファウイルスがチクングニアウイルス (CHIKV)またはベネズエラウマ脳炎ウイルス (VEEV)である、請求項5記載の粒子。
- ポリペプチドがエンベロープ蛋白質を含むウイルス構造ポリペプチドである、請求項2〜6のいずれかに記載の粒子。
- ポリペプチドがカプシドおよび/またはエンベロープ蛋白質E3、E2、6KおよびE1を含むウイルス構造ポリペプチドである、請求項2〜7のいずれかに記載の粒子。
- 少なくとも1つの抗原が、エンベロープ蛋白質のE2に挿入されている、請求項8記載の粒子。
- 抗原が自己抗原およびがん抗原からなる群より選択される少なくとも1つである、請求項1〜9のいずれかに記載の粒子。
- 抗原がTNF-α、CD20またはCTLA4由来のポリペプチドである、請求項1〜10のいずれか記載の粒子。
- ポリペプチドがチクングニアウイルス (CHIKV)またはベネズエラウマ脳炎ウイルス (VEEV)由来のポリペプチドである、請求項1〜11のいずれかに記載の粒子。
- 該ポリペプチドと少なくとも1つの抗原が
i)チクングニアウイルス (CHIKV)由来のポリペプチドおよびTNF-αのポリペプチド;
ii)チクングニアウイルス (CHIKV)由来のポリペプチドおよびCD20のポリペプチド;
iii)ベネズエラウマ脳炎ウイルス (VEEV)由来のポリペプチドおよびTNF-αのポリペプチド; または
iv)ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドおよびCD20のポリペプチド
v)ベネズエラウマ脳炎ウイルス (VEEV) 由来のポリペプチドおよびCTLA4のポリペプチド
である、請求項1〜12のいずれかに記載の粒子。 - 少なくとも1つの抗原とポリペプチドが融合蛋白質として発現する、請求項1〜13のいずれかに記載の粒子。
- ポリペプチドと少なくとも1つの抗原が直接融合している、請求項14記載の粒子。
- 少なくとも1つの抗原がポリペプチドと融合しており、該抗原および該ポリペプチドのN−末端残基および/または該抗原および該ポリペプチドのC−末端残基間に1つまたは2つのリンカーが介在する、請求項14記載の粒子。
- 少なくとも1つの抗原が、配列番号1または2の、519番目と520番目の残基の間、配列番号1または2の530番目と531番目の残基の間、配列番号1または2の531番目と532番目の残基の間または配列番号1または2の532番目と533番目の残基の間に挿入されている、請求項15または16記載の粒子。
- 融合蛋白質が、配列番号4、5、6、7または8で表されるアミノ酸配列からなる蛋白質である、請求項14〜17のいずれかに記載の粒子。
- 融合蛋白質が、配列番号4、5、6、7または8で表されるアミノ酸配列と、配列が90%以上同一であるアミノ酸配列からなる蛋白質由来である、請求項14〜17のいずれかに記載の粒子。
- 少なくとも1つの抗原が、化学クロスリンクを用いてポリペプチドに結合している、請求項1〜13のいずれかに記載の粒子。
- 請求項1〜20のいずれかに記載の粒子をコードするヌクレオチド配列を含む、単離された核酸分子。
- 配列番号13、14、15、16または17で表されるヌクレオチド配列からなる、単離された核酸分子。
- 配列番号13、14、15、16または17で表される配列をコードするヌクレオチド配列と、90%以上が同一である配列を有するヌクレオチド配列からなる、単離された核酸分子。
- 請求項23記載の核酸分子を含み、さらに該核酸分子に操作可能なように結合した発現調節配列を含んでいてよい、ベクター。
- 請求項1〜20のいずれかに記載の粒子および/または請求項21〜24のいずれかに記載の核酸分子を含む組成物。
- (a) 請求項1〜20のいずれかに記載の粒子および/または請求項21〜24のいずれかに記載の核酸分子; および
(b) 薬学的に許容される担体
を含む医薬組成物。 - 請求項1〜20のいずれかに記載の粒子を含むワクチン組成物。
- 請求項21〜24のいずれかに記載の核酸分子を含むDNAワクチン組成物。
- 抗体を産生する方法であって、請求項1〜20のいずれかに記載の粒子および/または請求項21〜24のいずれかに記載の核酸分子を哺乳類に接触させることを含む、方法。
- 抗体がモノクローナル抗体である、請求項29記載の方法。
- 免疫学的有効量の請求項25〜28のいずれかに記載の組成物を、哺乳類に投与することを含む、免疫調節方法。
- 免疫学的有効量の請求項25〜28のいずれかに記載の組成物を、哺乳類に投与することを含む、自己免疫疾患の処置方法。
- 有効量の、請求項25〜28のいずれかに記載の組成物を哺乳類に投与することを含む、哺乳類における抗原に対する免疫応答を誘発および/または増強する方法。
- 有効量の、請求項25〜28のいずれかに記載の組成物を哺乳類に投与することを含む、がんの処置方法。
- 請求項29または30に記載の方法により得られる抗体を哺乳類に投与することを含む、受動免疫の方法。
- がんの処置のための、請求項35記載の方法。
- 少なくとも1つの抗原ががん抗原である、請求項34〜36のいずれかに記載の方法。
- 少なくとも1つの抗原が1つ以上のがん抗原である、請求項34〜36のいずれかに記載の方法。
- 請求項1〜20のいずれかに記載の粒子および/または請求項21〜24のいずれかに記載の核酸分子を哺乳類に接触させることを含む、抗原のマクロファージ上の提示方法。
- 請求項14〜19のいずれかに記載の粒子の製造方法であって、該粒子をコードするヌクレオチド配列を含む遺伝子を調製し;該粒子を発現するように該遺伝子を遺伝子導入した細胞を培養し;該粒子を回収することを含む、製造方法。
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