GPC3-Unc5受容体複合体の構造と細胞移動における役割
Onno Akkermans1, Céline Delloye-Bourgeois2, Claudia Peregrina3
1Department of Biochemistry, University of Oxford, Oxford, UK.
Cell
|October 14, 2022
まとめ
この研究は,グリピカン-3 (GPC3) に結合するアンコーディネート-5受容体D (Unc5D) の構造を明らかにし,その相互作用が神経細胞の移動と癌細胞の拡散をどのように導いているかを明らかにした.
科学分野:
- 神経科学
- 構造生物学
- 癌 生物学
背景:
- 神経の移動は 細胞表面の誘導受容体を含む脳の発達に不可欠です
- 癌細胞はこれらの発達メカニズムを転移のために利用します
研究 の 目的:
- Uncoordinated-5受容体D (Unc5D) とグリピカン-3 (GPC3) の相互作用の構造的基礎を解明する.
- Unc5D-GPC3複合体の発達と癌における細胞誘導における役割を理解する.
主な方法:
- オクタメリック複合体の構造を決定するX線結晶学
- 分子ダイナミクスシミュレーションと質量スペクトロメトリを検証する.
- マウスおよび異種移植モデルにおける構造ベースの変異性およびナノボディ測定.
主要な成果:
- 結晶構造は,中央のグリカン-グリカン相互作用を持つオクタメリックUnc5D-GPC3複合体を明らかにした.
- Unc5D媒介のGPC3とC-マノシル化トリプトファンからのN結合グリカン.
- Unc5D- GPC3の相互作用は,ピラミッド神経細胞の移動と神経芽細胞の拡散を誘導することが示された.
結論:
- Unc5D- GPC3相互作用による細胞誘導の保存された構造的メカニズムが実証されました.
- 微妙にバランスのとれたUnc5D- GPC3結合は,発達と疾患の両方で細胞移動の調節に不可欠です.
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