JP6649393B2 - Vegfおよびpdgfのリガンド結合ドメインを含む融合タンパク質 - Google Patents
Vegfおよびpdgfのリガンド結合ドメインを含む融合タンパク質 Download PDFInfo
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Description
実施形態1は、(a)VEGF受容体の細胞外リガンド結合ドメインを含む第1のペプチド、(b)抗体のFc領域、および(c)PDGF受容体の細胞外リガンドを含む第2のペプチドを含む融合タンパク質であり、融合タンパク質は、(a)−(b)−(c)および(c)−(b)−(a)からなる群から選択される順序でN末端からC末端に配置され、融合タンパク質は、VEGFおよびPDGFに結合し、VEGFの活性およびPDGFの活性を阻害することができる。
融合タンパク質の生成、発現および精製および分析
融合タンパク質のVEGF165への結合親和性
融合タンパク質のPDGFへの結合親和性
融合タンパク質のVEGFK165への競合的結合
PDGF−BBへの融合タンパク質の競合的結合
融合タンパク質によるHUVEC増殖の阻害
融合タンパク質によるBALB/3T3増殖の阻害
融合タンパク質によるダッチベルテッドウサギ(Dutch Belted Rabbit)におけるVEGF誘導漏出の阻害
融合タンパク質によるダッチベルテッドウサギにおけるVEGF誘導漏出の用量応答阻害
融合タンパク質によるラットのレーザー誘導脈絡膜血管新生(CNV)における病変サイズの縮小
融合タンパク質によるサルのレーザー誘導CNVにおける病変サイズの減少
融合タンパク質による異種移植マウスにおけるヒト腫瘍増殖の阻害
ラットおよびサルにおける融合タンパク質の薬物動態学的評価
ウサギとサルにおける融合タンパク質の眼の薬物動態学的評価
(付記1)
(a)VEGF受容体の細胞外リガンド結合ドメインを含む第1のペプチドと、
(b)抗体のFc領域と、
(c)PDGF受容体の細胞外リガンド結合ドメインを含む第2のペプチドと、
を含み、
(a)−(b)−(c)および(c)−(b)−(a)からなる群から選択される順序でN末端からC末端に配置され、
VEGFおよびPDGFに結合し、VEGFの活性およびPDGFの活性を阻害することができる、
ことを特徴とする融合タンパク質。
(a)前記VEGF受容体の細胞外リガンド結合ドメインは、VEGFR1のIg様ドメインD2およびVEGFR2のIg様ドメインD3を含み、
(b)前記抗体のFc領域は、IgG1のCH2およびCH3領域を含み、
(c)前記PDGF受容体の細胞外リガンド結合ドメインは、PDGFRβのIg様ドメインD1〜D3を含む、
ことを特徴とする付記1に記載の融合タンパク質。
(a)前記VEGF受容体の細胞外リガンド結合ドメインは、配列番号7に対して少なくとも90%の同一性を有するアミノ酸配列を含み、
(b)前記抗体のFc領域は、配列番号12に対して少なくとも90%の同一性を有するアミノ酸配列を含み、
(c)前記PDGF受容体の細胞外リガンド結合ドメインは、配列番号2に対して少なくとも90%の同一性を有するアミノ酸配列を含む、
ことを特徴とする付記2に記載の融合タンパク質。
(a)前記VEGF受容体の細胞外リガンド結合ドメインは、配列番号7および10からなる群より選択されるアミノ酸配列を含み、
(b)前記抗体のFc領域は、配列番号12および15からなる群より選択されるアミノ酸配列を含み、
(c)前記PDGF受容体の細胞外リガンド結合ドメインは、配列番号2および5からなる群より選択されるアミノ酸配列を含む、
ことを特徴とする付記3に記載の融合タンパク質。
Fc領域と前記融合タンパク質のC末端の第1または第2のペプチドとの間の第1リンカーペプチドをさらに含み、
前記融合タンパク質のN末端の第1または第2のペプチドとFc領域との間の第2リンカーペプチドを任意に含む、
ことを特徴とする付記1乃至4のいずれか1項に記載の融合タンパク質。
前記第1リンカーペプチドは、配列番号20,22,24,26,28,30および32からなる群より選択される1つまたは複数のアミノ酸配列を含み、前記第2リンカーペプチドは、配列番号18のアミノ酸配列を含む、
ことを特徴とする付記5に記載の融合タンパク質。
前記融合タンパク質のN末端に連結されたシグナルペプチドをさらに含む、
ことを特徴とする付記1乃至6のいずれか1項に記載の融合タンパク質。
配列番号38、配列番号40、配列番号42のアミノ酸20〜766、配列番号44のアミノ酸21〜769または配列番号50のアミノ酸20〜768に対して少なくとも90%の同一配列を有するアミノ酸配列を含む、
ことを特徴とする融合タンパク質。
配列番号38、配列番号40、配列番号42のアミノ酸20〜766、配列番号44のアミノ酸21〜769および配列番号50のアミノ酸20〜768からなる群より選択されるアミノ酸配列を含む、
ことを特徴とする付記8に記載の融合タンパク質。
付記1乃至9のいずれか1項に記載の融合タンパク質をコードする単離された核酸分子。
付記1乃至9のいずれか1項に記載の融合タンパク質をコードする核酸分子を含む宿主細胞。
(1)融合タンパク質が産生される条件下で、付記1乃至9のいずれか1項に記載の融合タンパク質をコードする核酸分子を含む宿主細胞を培養する工程と、
(2)前記宿主細胞によって産生された融合タンパク質を回収する工程と、
を含む付記1乃至9のいずれか1項に記載の融合タンパク質の製造方法。
付記1乃至9のいずれか1項に記載の融合タンパク質および薬学的に許容される担体を含む医薬組成物。
付記1乃至9のいずれか1項に記載の融合タンパク質をコードする核酸分子および薬学的に許容される担体を含む医薬組成物。
有効量の付記1乃至9のいずれか1項に記載の融合タンパク質を必要な対象に投与することを含む、血管新生、血管透過性、浮腫および炎症からなる群より選択される臨床状態を治療または予防する方法。
有効量の付記1乃至9のいずれか1項に記載の融合タンパク質を必要な対象に投与することを含む、脈絡膜血管新生(CNV)、湿潤加齢性黄斑変性(AMD)および地図状萎縮からなる群から選択される臨床状態を治療または予防する方法。
Claims (15)
- (a)VEGF受容体の細胞外リガンド結合ドメインを含む第1のペプチドと、
(b)抗体のFc領域と、
(c)PDGF受容体の細胞外リガンド結合ドメインを含む第2のペプチドと、
を含み、
(a)−(b)−(c)および(c)−(b)−(a)からなる群から選択される順序でN末端からC末端に配置され、
VEGFおよびPDGFに結合し、VEGFの活性およびPDGFの活性を阻害することができ、
前記VEGF受容体の細胞外リガンド結合ドメインは、VEGFR1のIg様ドメインD2およびVEGFR2のIg様ドメインD3を含み、
前記抗体のFc領域は、IgG1のCH2およびCH3領域を含み、
前記PDGF受容体の細胞外リガンド結合ドメインは、PDGFRβのIg様ドメインD1〜D3を含む、
ことを特徴とする融合タンパク質。 - (a)前記VEGF受容体の細胞外リガンド結合ドメインは、配列番号7に対して少なくとも90%の同一性を有するアミノ酸配列を含み、
(b)前記抗体のFc領域は、配列番号12に対して少なくとも90%の同一性を有するアミノ酸配列を含み、
(c)前記PDGF受容体の細胞外リガンド結合ドメインは、配列番号2に対して少なくとも90%の同一性を有するアミノ酸配列を含む、
ことを特徴とする請求項1に記載の融合タンパク質。 - (a)前記VEGF受容体の細胞外リガンド結合ドメインは、配列番号7および10からなる群より選択されるアミノ酸配列を含み、
(b)前記抗体のFc領域は、配列番号12および15からなる群より選択されるアミノ酸配列を含み、
(c)前記PDGF受容体の細胞外リガンド結合ドメインは、配列番号2および5からなる群より選択されるアミノ酸配列を含む、
ことを特徴とする請求項2に記載の融合タンパク質。 - Fc領域と前記融合タンパク質のC末端の第1または第2のペプチドとの間の第1リンカーペプチドをさらに含み、
前記融合タンパク質のN末端の第1または第2のペプチドとFc領域との間の第2リンカーペプチドを任意に含む、
ことを特徴とする請求項1乃至3のいずれか1項に記載の融合タンパク質。 - 前記第1リンカーペプチドは、配列番号20,22,24,26,28,30および32からなる群より選択される1つまたは複数のアミノ酸配列を含み、前記第2リンカーペプチドは、配列番号18のアミノ酸配列を含む、
ことを特徴とする請求項4に記載の融合タンパク質。 - 前記融合タンパク質のN末端に連結されたシグナルペプチドをさらに含む、
ことを特徴とする請求項1乃至5のいずれか1項に記載の融合タンパク質。 - 配列番号38、配列番号40、配列番号42のアミノ酸20〜766、配列番号44のアミノ酸21〜769または配列番号50のアミノ酸20〜768に対して少なくとも90%の同一配列を有するアミノ酸配列を含む、
ことを特徴とする融合タンパク質。 - 配列番号38、配列番号40、配列番号42のアミノ酸20〜766、配列番号44のアミノ酸21〜769および配列番号50のアミノ酸20〜768からなる群より選択されるアミノ酸配列を含む、
ことを特徴とする請求項7に記載の融合タンパク質。 - 請求項1乃至8のいずれか1項に記載の融合タンパク質をコードする単離された核酸分子。
- 請求項1乃至8のいずれか1項に記載の融合タンパク質をコードする核酸分子を含む宿主細胞。
- (1)融合タンパク質が産生される条件下で、請求項1乃至8のいずれか1項に記載の融合タンパク質をコードする核酸分子を含む宿主細胞を培養する工程と、
(2)前記宿主細胞によって産生された融合タンパク質を回収する工程と、
を含む請求項1乃至8のいずれか1項に記載の融合タンパク質の製造方法。 - 請求項1乃至8のいずれか1項に記載の融合タンパク質および薬学的に許容される担体を含む医薬組成物。
- 請求項1乃至8のいずれか1項に記載の融合タンパク質をコードする核酸分子および薬学的に許容される担体を含む医薬組成物。
- 血管新生、血管透過性、浮腫および炎症からなる群より選択される臨床状態を治療または予防するために用いられる、
ことを特徴とする薬剤の製造における請求項1乃至8のいずれか1項に記載の融合タンパク質の使用。 - 脈絡膜血管新生(CNV)、湿潤加齢性黄斑変性(AMD)および地図状萎縮からなる群から選択される臨床状態を治療または予防するために用いられる、
ことを特徴とする薬剤の製造における請求項1乃至8のいずれか1項に記載の融合タンパク質の使用。
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WO2019168947A1 (en) * | 2018-02-28 | 2019-09-06 | Ap Biosciences, Inc. | Bifunctional proteins combining checkpoint blockade for targeted therapy |
US12071476B2 (en) | 2018-03-02 | 2024-08-27 | Kodiak Sciences Inc. | IL-6 antibodies and fusion constructs and conjugates thereof |
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