JP2017527268A - サーファクタントタンパク質a受容体を標的とする組成物及び方法 - Google Patents
サーファクタントタンパク質a受容体を標的とする組成物及び方法 Download PDFInfo
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Abstract
Description
[図28B]モノクローナルSP-R210抗体は、インフルエンザ感染による致死からの生存を増進する。1000 ffcのインフルエンザウイルスH1N1 PR8を用いる感染の24時間前に、マウスの腹腔内に、100μgの抗体又は100μLのPBSビヒクルを注射した。マウスの病的状態と体重を毎日モニターした。IgG1:アイソタイプ・コントロール抗体;P2H10:抗-SP-R210S抗体;P4G4:抗-SP-R210L+S抗体. 1グループあたりn=5マウス *p<0.04
[図30B]ハイブリドーマP2H10によって産生された抗-SP-R210S可変重鎖のコード配列。CDRコード配列の位置を、太字で示す。
[図30C]ハイブリドーマP2H10によって産生された抗-SP-R210S可変軽鎖のCDRマッピング。
[図30D]ハイブリドーマP2H10によって産生された抗-SP-R210S可変軽鎖のコード配列。CDRコード配列の位置を、太字で示す。
[図30E]ハイブリドーマP4G4によって産生された抗-SP-R210S+L可変重鎖のCDRマッピング。
[図30F]ハイブリドーマP4G4によって産生された抗-SP-R210S+L可変重鎖のコード配列。CDRコード配列の位置を、太字で示す。
[図30G]ハイブリドーマP4G4によって産生された抗-SP-R210S+L可変軽鎖のCDRマッピング。
[図30H]ハイブリドーマP4G4によって産生された抗-SP-R210S+L可変軽鎖のコード配列。CDRコード配列の位置を、太字で示す。
このアミノ酸配列は、本明細書中で「R300」とも称される。この配列は、SP-R210αサブユニット・スプライスバリアントCSのために、 GenBank受入番号AAV80767.1で利用可能である。「CL」及び「CS」は、SP-R210カルボキシ末端領域の2つの変異体、すなわち「カルボキシ末端ラージ(Carboxy-terminal Large)」及び「カルボキシ末端スモール(Carboxy-terminal Small)」をそれぞれ意味する。N-末端Eは、SP-R210Sでは残基1580、SP-R210Lでは残基1938である。
EDEMESDENEDLINSLQDMVTKYQKKKNKLEGDSDVDSELEDRVDRVKSWLSKNKGPSKAPSDDGSLKSSSPTSHWKPLAPDPSDDEHDPVDSISRPRFSHSYLSDSDTEAKLTETSA(配列番号2)。
このアミノ酸配列は、本明細書中で「R350」とも称される。この配列は、SP-R210αサブユニット・スプライスバリアントCLのために、 GenBank受入番号AAV80766.1で利用可能である。
Claims (12)
- サーファクタントタンパク質AのSP-R210受容体に特異的に結合するモノクローナル抗体(mAb)又はそのフラグメントであって、
(I)以下を含む可変重鎖配列:
a)配列GYIFSDYYMR(配列番号3)を含む重鎖相補性決定領域1(P2H10-HCDR1);及び
b)配列DINPKNGDTFYNQKFKGK(配列番号4)を含む重鎖相補性決定領域2(P2H10-HCDR2);及び
c)配列REGD(配列番号5)を含む重鎖相補性決定領域3(P2H10-HCDR3);及び、
以下を含む可変軽鎖配列:
d)配列RSSQTILHSNGNTYLE(配列番号6)を含む軽鎖相補性決定領域1(P2H10-LCDR1);及び
e)配列KVSKRFS(配列番号7)を含む軽鎖相補性決定領域2(P2H10-LCDR2);及び
f)配列LQGSHVPLT(配列番号8)を含む軽鎖相補性決定領域3(P2H10-LCDR3);
を含むか、
あるいは、
(II)以下を含む可変重鎖配列:
i)配列GYTFTDYAMH(配列番号9)を含む重鎖相補性決定領域1(P4G4-HCDR1);及び
ii)配列VISTYNGNTKYNQKFKD(配列番号10)を含む重鎖相補性決定領域2(P4G4-HCDR2);及び
iii)配列ARTDYDNGDYVMDY(配列番号11)を含む重鎖相補性決定領域3(P4G4-HCDR3);及び
以下を含む可変軽鎖配列:
iv)配列KASQDINNYLS(配列番号12)を含む軽鎖相補性決定領域1(P4G4-LCDR1);及び
v)配列RANRLVD(配列番号13)を含む軽鎖相補性決定領域2(P4G4-LCDR2);及び
vi)配列LQYDEFPLT(配列番号14)を含む軽鎖相補性決定領域3(P4G4-LCDR3);
を含む、モノクローナル抗体又はそのフラグメント。 - 前記(I)のモノクローナル抗体又はフラグメントが、SP-R210受容体のSP-R210Sアイソフォームのみに特異的に結合し、前記(II)のモノクローナル抗体又はそのフラグメントが、SP-R210受容体のSP-R210S及びSP-R210Lアイソフォームに特異的に結合する、請求項1に記載のモノクローナル抗体又はそのフラグメント。
- 前記モノクローナル抗体又はそのフラグメントが、部分的に又は完全にヒト化されている、請求項1に記載のモノクローナル抗体又はそのフラグメント。
- ヒトIgG定常領域を含んでいる、請求項3に記載のモノクローナル抗体。
- その必要がある個体を治療する方法であって、前記個体に、請求項1に記載のモノクローナル抗体又はそのフラグメントを含む組成物を有効量で投与することを含む、方法。
- 前記個体が、ウイルス感染症又は細菌感染症のための治療を必要としている、請求項5に記載の方法。
- 前記個体が、ウイルス性インフルエンザ感染のための治療を必要としている、請求項6に記載の方法。
- 前記個体が、ウイルス性インフルエンザ感染に関連する肺炎を有している、請求項7に記載の方法。
- 請求項1に記載のモノクローナル抗体又はそのフラグメントをコードしている発現ベクター。
- 生体外細胞培養物であって、当該細胞培養物中の細胞が、請求項1に記載のモノクローナル抗体又はそのフラグメントを発現する、細胞培養物。
- 請求項1に記載のモノクローナル抗体をコードするポリヌクレオチド配列を含む、ハイブリドーマ。
- 請求項1に記載のモノクローナル抗体又はそのフラグメントを含む、医薬組成物。
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SAMTEN, B., ET AL.: ""An antibody against the surfactant protein A (SP-A)-binding domain of the SP-A receptor inhibits T", JOURNAL OF LEUKOCYTE BIOLOGY, vol. 84, no. 1, JPN6019002798, July 2008 (2008-07-01), pages 115 - 123, XP055222600, ISSN: 0003967586, DOI: 10.1189/jlb.1207835 * |
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