JP7488337B2 - Il-2タンパク質及びcd80タンパク質を含む融合タンパク質及びnk細胞を含む抗癌治療用組成物 - Google Patents
Il-2タンパク質及びcd80タンパク質を含む融合タンパク質及びnk細胞を含む抗癌治療用組成物 Download PDFInfo
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Description
本発明の一側面は、IL-2タンパク質及びCD80タンパク質を含む融合タンパク質及びNK細胞を有効成分として含む医薬組成物を提供する。
(a)R38A/F42A;
(b)R38A/F42A/Y45A;
(c)R38A/F42A/E61R;又は
(d)R38A/F42A/L72G
このとき、IL-2が配列番号35のアミノ酸配列を有する場合に、配列番号10と相補的に対応する位置にアミノ酸置換を有することができる。また、IL-2が配列番号35のアミノ酸配列の断片である場合にも、配列番号10と相補的に対応する位置のアミノ酸が置換されてよい。
N’-X-[リンカー(1)]n-Fcドメイン-[リンカー(2)]m-Y-C’(I)
N’-Y-[リンカー(1)]n-Fcドメイン-[リンカー(2)]m-X-C’(II)
このとき、前記構造式(I)及び(II)において、
前記N’は、融合タンパク質のN末端であり、
前記C’は、融合タンパク質のC末端であり、
前記Xは、CD80タンパク質であり、
前記Yは、IL-2タンパク質であり、
前記リンカー(1)及びリンカー(2)は、ペプチドリンカーであり、
前記n及びmはそれぞれ独立に、O又は1である。
TV(mm3)=W×W×L×0.5
腫瘍成長抑制率(Tumor growth inhibition,%)=(1-(Ti-T0)/(Vi-V0))×100
T0=実験群の投与後腫瘍の体積
Vi=対照群の投与前腫瘍の体積
V0=対照群の投与後腫瘍の体積
各個体の投与前の腫瘍の体積は、群分離時に測定された値に設定した。
Claims (12)
- 融合タンパク質を有効成分として含む、ナチュラルキラー細胞と組み合わせて癌の治療に使用するための医薬組成物であって、
前記融合タンパク質は、下記構造式(I)又は(II)からなるものであり:
N’-X-[リンカー(1)]n-Fcドメイン-[リンカー(2)]m-Y-C’(I)
N’-Y-[リンカー(1)]n-Fcドメイン-[リンカー(2)]m-X-C’(II)
ここで、前記構造式(I)及び(II)において、
前記N’は、融合タンパク質のN末端であり、
前記C’は、融合タンパク質のC末端であり、
前記Xは、CD80タンパク質またはその断片であり、
前記Yは、IL-2タンパク質の変異体であり、
前記リンカー(1)及びリンカー(2)は、ペプチドリンカーであり、
前記n及びmはそれぞれ独立に、O又は1である、
前記CD80断片は、CD80の細胞外ドメインを含み、そして
前記IL-2の変異体は、配列番号6、22、23又は24のアミノ酸配列を含む、前記医薬組成物。 - 前記CD80は、配列番号11のアミノ酸配列を有するものである、請求項1に記載の医薬組成物。
- 前記CD80の断片は、配列番号11のアミノ酸配列の35番目~242番目のアミノ酸からなるものである、請求項1に記載の医薬組成物。
- 前記リンカーは、アルブミン又は免疫グロブリンのFcドメインである、請求項1に記載の医薬組成物。
- 前記Fcドメインは、配列番号4のアミノ酸配列を有するものである、請求項1に記載の医薬組成物。
- 前記Fcドメインは、配列番号12のアミノ酸配列を有するものである、請求項1に記載の医薬組成物。
- 前記リンカー(1)が配列番号3のアミノ酸配列からなるペプチドリンカーである、請求項1に記載の医薬組成物。
- 前記リンカー(2)が配列番号5のアミノ酸配列からなるペプチドリンカーである、請求項1に記載の医薬組成物。
- 前記融合タンパク質は、構造式(I)からなるものである、請求項1に記載の医薬組成物。
- 前記融合タンパク質は、配列番号9、26、28又は30のアミノ酸配列に対して90%或いはそれ以上の配列同一性を有するものである、請求項1に記載の医薬組成物。
- 前記融合タンパク質は、二量体であることを特徴とする、請求項1に記載の医薬組成物。
- 前記癌は、胃癌、肝癌、肺癌、大腸癌、乳癌、前立腺癌、卵巣癌、膵癌、子宮頸癌、甲状腺癌、喉頭癌、急性骨髄性白血病、脳腫瘍、神経芽細胞腫、網膜芽細胞腫、頭頸部癌、唾液腺癌及びリンパ腫からなる群から選ばれるいずれか一つである、請求項1に記載の医薬組成物。
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KR20200015802 | 2020-02-10 | ||
PCT/KR2020/016949 WO2021107635A1 (ko) | 2019-11-27 | 2020-11-26 | Il-2 단백질 및 cd80 단백질을 포함하는 융합단백질 및 nk 세포를 포함하는 항암 치료용 조성물 |
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