JP7183149B2 - 安定化されたグループ2インフルエンザヘマグルチニンステム領域三量体およびその使用 - Google Patents
安定化されたグループ2インフルエンザヘマグルチニンステム領域三量体およびその使用 Download PDFInfo
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Description
1)疎水性:Met、Ala、Val、Leu、Ile;
2)中性親水性:Cys、Ser、Thr;
3)酸性:Asp、Glu;
4)塩基性:Asn、Gln、His、Lys、Arg;
5)鎖の方向に影響を及ぼす残基:Gly、Pro;および
6)芳香族:Trp、Tyr、Phe。
第1のアミノ酸配列が、ヘッド領域配列のアミノ末端の上流のアミノ酸配列由来の少なくとも20個の連続アミノ酸を含み、
第2のアミノ酸配列が、ヘッド領域配列のカルボキシル末端の下流のアミノ酸配列ユリアの少なくとも20個の連続アミノ酸残基を含み、および
タンパク質コンストラクトがナノ粒子を形成することができるように、第1または第2のアミノ酸配列が単量体サブユニットドメインの少なくとも一部に連結する
タンパク質コンストラクトである。
第1のアミノ酸配列が、A型インフルエンザウイルスHAタンパク質のヘッド領域配列のアミノ末端の上流のアミノ酸配列に由来する少なくとも20個の連続アミノ酸残基、またはA型インフルエンザウイルスHAタンパク質のヘッド領域配列のアミノ末端の上流のアミノ酸配列に由来する少なくとも40個の連続アミノ酸と少なくとも85%同一、少なくとも90%同一、少なくとも95%同一、少なくとも97%同一、または少なくとも99%同一であるアミノ酸配列を含み;
第2のアミノ酸配列が、A型インフルエンザウイルスHAタンパク質のヘッド領域配列のカルボキシル末端をヘリックス間領域に連結させるアミノ酸配列に由来する少なくとも20個の連続アミノ酸残基、またはA型インフルエンザウイルスHAタンパク質のヘッド領域配列のカルボキシル末端をヘリックス間領域に連結させるアミノ酸配列に由来する少なくとも40個の連続アミノ酸残基と少なくとも85%同一、少なくとも90%同一、少なくとも95%同一、少なくとも97%同一、または少なくとも99%同一であるアミノ酸配列を含み;
第3のアミノ酸配列が、A型インフルエンザウイルスHAタンパク質のヘリックス間領域のカルボキシル末端を膜貫通ドメイン(TM)に連結させるアミノ酸配列に由来する少なくとも20個の連続アミノ酸、またはA型インフルエンザウイルスHAタンパク質のヘリックス間領域のカルボキシル末端を膜貫通ドメインに連結させるアミノ酸配列に由来する少なくとも40個の連続アミノ酸残基と少なくとも85%同一、少なくとも90%同一、少なくとも95%同一、少なくとも97%同一、または少なくとも99%同一であるアミノ酸配列を含み;
第1および第2のアミノ酸配列が、リンカー配列によって連結され、第2および第3のアミノ酸配列がリンカーペプチドによって連結され、ならびに
タンパク質コンストラクトがナノ粒子を形成することができるように、第1または第3のアミノ酸配列が単量体サブユニットドメインの少なくとも一部に連結する
タンパク質コンストラクトである。
第1のアミノ酸配列が、ヘッド領域配列のアミノ末端の上流のアミノ酸配列に由来する少なくとも20個の連続アミノ酸残基を含み;
第2のアミノ酸配列が、ヘッド領域配列のカルボキシル末端の下流のアミノ酸配列に由来する少なくとも20個の連続アミノ酸残基を含み;および
タンパク質コンストラクトがナノ粒子を形成することができるように、第1または第2のアミノ酸配列が単量体サブユニットドメインの少なくとも一部に連結する
タンパク質コンストラクトを含む。
a)単量体サブユニット含むナノ粒子であって、単量体サブユニットがインフルエンザヘマグルチニンタンパク質に連結し、ナノ粒子がその表面上にグループ2インフルエンザウイルスHAタンパク質を提示する、ナノ粒子を得ること;および
b)インフルエンザウイルスに対する免疫応答が生じるように、個体にナノ粒子を投与すること
を含む方法である。
a)本発明のタンパク質コンストラクトを含む少なくとも1つのナノ粒子を含むワクチンであって、タンパク質コンストラクトが、グループ2インフルエンザウイルスHAタンパク質に連結した単量体サブユニットタンパク質を含み、ナノ粒子がその表面上にインフルエンザHAを提示する、ワクチンを得ること;および
b)インフルエンザウイルスに対する免疫応答が生じるように、ワクチンを個体に投与すること
を含む方法である。
a.抗インフルエンザ抗体の存在に関して試験される試料の少なくとも一部を、本発明のナノ粒子に接触させること;および
b.ナノ粒子/抗体複合体の存在を検出すること
によって一般的に達成することができ、
ナノ粒子/抗体複合体の存在は、試料が抗インフルエンザ抗体を含むことを示す。
a.抗インフルエンザ抗体に関して試験される個体からの試料を、本発明のナノ粒子に接触させること;および
b.接触させた試料をナノ粒子/抗体複合体の存在に関して分析すること
を含み、
ナノ粒子/抗体複合体の存在は、個体が抗インフルエンザ抗体を有することを示す、方法である。
a.抗インフルエンザ抗体に関して試験される個体からの試料の少なくとも一部を、本発明のナノ粒子に接触させること;
b.接触させた試料を、抗体/ナノ粒子複合体の存在またはレベルに関して分析すること;ここで、抗体/ナノ粒子複合体の存在またはレベルは、最近の抗インフルエンザ抗体の存在またはレベルを示す;
c.最近の抗インフルエンザ抗体レベルを過去の抗インフルエンザ抗体レベルと比較すること
を含み、
最近の抗インフルエンザ抗体レベルが過去のインフルエンザ抗体レベルと比較して増加すれば、個体が、過去の抗インフルエンザ抗体レベルの決定後にインフルエンザウイルスに曝露たことを示す、
方法である。
a.インフルエンザウイルスに関するワクチンを個体に投与すること;
b.個体からの試料の少なくとも一部を本発明のナノ粒子に接触させること;
c.接触させた試料を、抗体/ナノ粒子複合体の存在またはレベルに関して分析すること
を含み、
抗体/ナノ粒子複合体の存在またはレベルは、最近の抗インフルエンザ抗体の存在またはレベルを示し、試料中の抗体レベルが個体におけるワクチン投与前の抗体レベルと比較して増加すれば、ワクチンが個体において免疫応答を誘導したことを示す、
方法である。
本発明の実施形態を、以下、さらに記載する:
[項1]
グループ2インフルエンザヘマグルチニン(HA)タンパク質を含む組換えタンパク質であって、ヘッド領域のアミノ酸配列が、インフルエンザHAタンパク質のヘッド領域に由来する5個未満の連続アミノ酸を含むリンカーで置き換えられており、タンパク質の哺乳動物への投与が、哺乳動物におけるグループ2インフルエンザHAタンパク質に対する免疫応答を誘発する、組換えタンパク質。
[項2]
組換えタンパク質が、グループ2インフルエンザウイルスヘマグルチニン(HA)タンパク質のステム領域に由来する第1のアミノ酸配列と、グループ2インフルエンザウイルスヘマグルチニン(HA)タンパク質のステム領域に由来する第2のアミノ酸配列とを含み、
第1および第2のアミノ酸配列が、リンカー配列によって共有結合により連結され、
第1のアミノ酸配列が、ヘッド領域配列のアミノ末端の上流のアミノ酸配列に由来する少なくとも20個の連続アミノ酸残基を含み、
第2のアミノ酸配列が、ヘッド領域配列のカルボキシル末端の下流のアミノ酸配列に由来する少なくとも20個の連続アミノ酸残基を含む、
上記項1に記載の組換えタンパク質。
[項3]
単量体サブユニットに連結している、上記項1または2に記載の組換えタンパク質。
[項4]
単量体サブユニットタンパク質が、フェリチンまたはルマジンシンターゼに由来する、上記項3に記載の組換えタンパク質。
[項5]
上記項1~4のいずれか一項に記載の組換えタンパク質を含むナノ粒子であって、インフルエンザHAタンパク質の三量体を表面上に提示する、ナノ粒子。
[項6]
上記項1~4のいずれか一項に記載の組換えタンパク質と少なくとも95%同一であるアミノ酸配列を含むタンパク質を含む免疫原性組成物。
[項7]
上記項1~4のいずれか一項に記載の組換えタンパク質、または上記項5に記載のナノ粒子、およびアジュバントを含むワクチン組成物。
[項8]
上記項7に記載のワクチン組成物の免疫学的有効量を、必要とするヒトに投与することを含む、ヒトにおいてインフルエンザウイルス感染の病理学的作用を阻止または低減する方法。
[項9]
上記項1~4のいずれか一項に記載の組換えタンパク質をコードする核酸。
[項10]
DNAである、上記項9に記載の核酸。
[項11]
上記項10に記載の核酸を含むベクター。
[項12]
上記項11に記載のベクターを含む宿主細胞。
[項13]
細菌細胞、酵母細胞、または哺乳動物細胞である、上記項12に記載の宿主細胞。
[項14]
上記項1~4のいずれか一項に記載の組換えタンパク質を含む医薬組成物。
[項15]
上記項1~4のいずれか一項に記載の組換えタンパク質、上記項5に記載のナノ粒子、上記項6に記載の免疫原性組成物、上記項7に記載のワクチン組成物、上記項9に記載の核酸分子、または上記項11に記載のベクターの予防または治療有効量を対象に投与することを含む、ワクチン接種方法。
[項16]
上記項1~4のいずれか一項に記載の組換えタンパク質、上記項5に記載のナノ粒子、上記項6に記載の免疫原性組成物、上記項7に記載のワクチン組成物、上記項9に記載の核酸分子、または上記項11に記載のベクターの予防または治療有効量を、必要とする対象に投与することを含む、インフルエンザ関連疾患の処置方法。
[項17]
生理学的に許容される担体と組み合わせた、上記項1~4のいずれか一項に記載の組換えタンパク質を含むワクチン。
[項18]
抗インフルエンザ抗体を検出する方法であって、
a.抗インフルエンザ抗体の存在に関して試験される試料の少なくとも一部を、上記項5に記載のナノ粒子に接触させること;および
b.ナノ粒子/抗インフルエンザ抗体複合体の存在を検出すること
を含み、
ナノ粒子/抗体複合体の検出は、試料が抗インフルエンザ抗体を含むことを示す、方法。
Claims (21)
- 組換えグループ2インフルエンザウイルスヘマグルチニン(HA)タンパク質を含む組換えタンパク質であって、
HAタンパク質のヘッド領域が10個未満のアミノ酸の長さのリンカー配列で置き換えられており、
HAタンパク質のステム領域におけるヘリックスAの長さが、ヘリックスAへのアミノ酸配列ALMAQ(配列番号36)またはELMEQ(配列番号37)の付加によって伸長されており、
HAタンパク質のステム領域におけるヘリックスAとヘリックスCの間のヘリックス間ループが、アミノ酸配列GGPD(配列番号39)からなるリンカー配列で置き換えられている、
組換えタンパク質。 - HAタンパク質のステム領域が、(i)HAタンパク質において新たなイオン相互作用もしくは塩架橋を形成するか、または(ii)HAタンパク質において既存のイオン相互作用もしくは塩架橋を強化する、1つまたは複数の突然変異を含む、請求項1に記載の組換えタンパク質。
- HAタンパク質のステム領域が、HAタンパク質において疎水性パッキングを増加させる1つまたは複数の突然変異を含む、請求項1または2に記載の組換えタンパク質。
- HAタンパク質が、配列番号4におけるG39、T46、N54、N338、Q392、K396、L397、L400、S438、N440、E448、T452およびN461からなる群から選択される1つまたは複数の位置に対応するHAタンパク質のアミノ酸位置において1つまたは複数の突然変異を含む、請求項1~3のいずれかに記載の組換えタンパク質。
- 配列番号4におけるN440に対応するアミノ酸がロイシンに変更されている、請求項4に記載の組換えタンパク質。
- 配列番号4におけるS438に対応するアミノ酸がシステインに変更されている、請求項4または5に記載の組換えタンパク質。
- HAタンパク質のヘッド領域が配列番号34または配列番号35のリンカー配列で置き換えられている、請求項1~6のいずれかに記載の組換えタンパク質。
- 組換えタンパク質が、自己集合性の単量体サブユニットタンパク質に連結されている、または膜貫通ドメインを含む、請求項1~7のいずれかに記載の組換えタンパク質。
- HAタンパク質のステム領域が、配列番号47~52、54~58、60~63、71~83、87、88、90~96、98~125、127~143および145~159の任意の1つのタンパク質コンストラクトのHAタンパク質ステム領域のアミノ酸配列と少なくとも90%同一であるアミノ酸配列を含む、請求項1~8のいずれかに記載の組換えタンパク質。
- HAタンパク質のステム領域が、配列番号47~52、54~58、60~63、71~83、87、88、90~96、98~125、127~143および145~159の任意の1つのタンパク質コンストラクトのHAタンパク質ステム領域のアミノ酸配列を含む、請求項9に記載の組換えタンパク質。
- HAタンパク質のステム領域が、配列番号49または配列番号106のタンパク質コンストラクトのHAタンパク質ステム領域のアミノ酸配列と少なくとも90%同一であるアミノ酸配列を含む、請求項9に記載の組換えタンパク質。
- HAタンパク質のステム領域が、配列番号49または配列番号106のタンパク質コンストラクトのHAタンパク質ステム領域のアミノ酸配列を含む、請求項11に記載の組換えタンパク質。
- 組換えタンパク質が、配列番号47~52、54~58、60~63、71~83、87、88、90~96、98~125、127~143および145~159からなる群から選択される配列と少なくとも90%同一であるアミノ酸配列を含む、請求項1~12のいずれかに記載の組換えタンパク質。
- 組換えタンパク質が、配列番号47~52、54~58、60~63、71~83、87、88、90~96、98~125、127~143および145~159からなる群から選択されるアミノ酸配列を含む、請求項13に記載の組換えタンパク質。
- 組換えタンパク質が、配列番号49または配列番号106と少なくとも90%同一であるアミノ酸配列を含む、請求項13に記載の組換えタンパク質。
- 組換えタンパク質が、配列番号49または配列番号106のアミノ酸配列を含む、請求項15に記載の組換えタンパク質。
- 請求項1~16のいずれかに記載の組換えタンパク質をコードする核酸分子。
- 請求項1~16のいずれかに記載の組換えタンパク質を含むナノ粒子。
- 請求項1~16のいずれかに記載の組換えタンパク質、請求項17に記載の核酸分子、または請求項18に記載のナノ粒子を含むキット。
- 請求項1~16のいずれかに記載の組換えタンパク質、または請求項18に記載のナノ粒子を含む、個体へのインフルエンザウイルスに対するワクチン接種用の医薬組成物。
- 抗インフルエンザ抗体を検出する方法であって、
a.抗インフルエンザ抗体の存在に関して試験される試料の少なくとも一部を、請求項1~16のいずれかに記載の組換えタンパク質、または請求項18に記載のナノ粒子に接触させること;および
b.該組換えタンパク質またはナノ粒子と抗インフルエンザ抗体との複合体の存在を検出すること
を含み、
該複合体の検出は、試料が抗インフルエンザ抗体を含むことを示す、
方法。
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