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リンパ球ホーミング受容体のクローニングは,レクチン領域を明らかにします
L A Lasky1, M S Singer, T A Yednock
1Department of Cardiovascular Research, Genentech, Inc. South San Francisco, California 94080.
Cell
|March 24, 1989
まとめ
研究者らはマウスのcDNAをホーミング受容体のためにクローン化し,リンパ球がリンパ節内皮に結合するのに不可欠なレクチン領域を特定しました. この発見は,リンパ球の分布に関与する新しい細胞粘着分子を定義しています.
科学分野:
- 免疫学 免疫学とは
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
背景:
- リンパ球はホーミング受容体を用いて,リンパ性臓器の高い内皮静脈に結合する.
- 辺縁リンパ節におけるリンパ細胞・エンドセリウム粘着には,レクチンのような活動が含まれます.
- MEL-14抗体は,この結合をブロックし,指向受容体を標的にすることを示唆しています.
研究 の 目的:
- MEL-14抗体によって認識された抗原をコードするネズミのcDNAをクローンするために.
- 推定の周辺リンパ節特異的ホーミング受容体の構造と機能を特徴づける.
- リンパ球ホーミングに関与する細胞粘着分子の新種を定義する.
主な方法:
- モノクローナル抗体のスクリーニング
- cDNAクローニング
- 遺伝子配列の特徴づけ
- 暗号化されたタンパク質の機能分析
主要な成果:
- MEL-14抗原をコードするネズミのcDNAのクローニング.
- 暗号化されたタンパク質はレクチン領域を有する.
- このレクチン領域は,リンパ球が周辺リンパ節内皮に結合することに関与しています.
- 新しい細胞粘着分子の特定.
結論:
- クローンされたcDNAは,レクチン領域を持つ新しいホーミング受容体をコードします.
- この受容体は,リンパ球が周辺リンパ節内皮に接着することを媒介する.
- リンパ球細胞のリンパ性臓器への分布のための新しいメカニズムを定義します.
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