セマフォリン遺伝子は,トランスメブランと分泌された成長コンの誘導分子の一族をコードする

A L Kolodkin¹, D J Matthes, C S Goodman

¹Howard Hughes Medical Institute, Department of Molecular and Cell Biology, University of California, Berkeley 94720.

Cell

|December 31, 1993

まとめ

この研究は,ドロソフィラとヒトのセマフォリン遺伝子を特定し,特徴づけ,神経発達と成人の生存における重要な役割を明らかにしています. セマフォリンIは,上皮の境界にある感覚的成長を誘導する.

科学分野:

発達生物学発達生物学とは
神経科学は神経科学である.
分子遺伝学分子遺伝学

背景:

セマフォリンI (Sema I) は,トカゲの肢芽の表皮の境界にある感覚的成長を誘導する.
セマフォリンは,細胞の誘導に関与するタンパク質の保存された家族です.

研究の目的:

ドロソフィラとヒトのセマフォリン遺伝子をクローンして特徴づけること.
神経発達と行動におけるセマフォリン遺伝子の機能を調査する.

主な方法:

ドロソフィラとヒトにおけるセマフォリン遺伝子の遺伝子クローニングと特徴付け.
関連するウイルスセマフォリン配列の識別.
ニューロンと筋肉におけるドロソフィラ・セマフォリン遺伝子の発現分析.
ドロソフィラの遺伝子分析により,遺伝子の本質性を決定する.

主要な成果:

2つのドロソフィラセマフォリン遺伝子 (D-Sema IとD-Sema II) と1つのヒトセマフォリン遺伝子 (Sema III) がクローンされ,特徴づけられました.
D-Sema Iはトランスメブランタンパク質であり,D-Sema IIとヒトセマIIIは分泌されるタンパク質である.
D-Sema IとD-Sema IIはニューロンと筋肉のサブセットで表現されます.
ドロソフィラセマIIは,成人の行動と生存に不可欠です.

結論:

セマフォリンは種によって保存され,神経の発達において重要な役割を果たします.
ドロソフィラ・セマフォリンIIは,神経系の適切な機能に不可欠であり,行動と生存に影響を与えます.

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