研究揭示蛋白質相互作用的複雜網絡
作者:
小柯機器人發布時間:2020/8/21 19:07:09
美國史丹福大學醫學院K. Christopher Garcia和Woj M. Wojtowicz研究團隊,利用人IgSF細胞表面相互作用組揭示了蛋白質-蛋白質相互作用(PPI)的複雜網絡。相關論文於2020年8月20日發表在《細胞》雜誌上。
研究人員使用基於ELISA的自動化篩選平臺、高通量、混合蛋白質策略對所有318,096個蛋白間的相互作用(PPI)組合進行測試,從而對564種人細胞表面和分泌蛋白質(大部分為免疫球蛋白超家族(IgSF)蛋白)進行了相互作用組篩選。通過系統進化同源性分析優化篩選結果,研究人員發現了約380個以前未知的PPI。
研究人員使用表面等離子共振和細胞結合實驗驗證了其中一個子集。這些PPI揭示了生物系統內部和系統之間相互作用龐大而複雜的網絡。研究人員發現了具有已知配體和結合伴侶「孤兒」受體的新PPI。新的PPI包括在多種細胞類型中表達的蛋白質,並參與多種細胞過程,包括免疫和神經系統的發育和功能、分化/增殖、新陳代謝、血管生成和細胞增殖。這些PPI為進一步對其功能相關性生物學研究提供了資源,並可能提供新的藥物治療靶點。
據悉,細胞表面蛋白間的相互作用介導了細胞間通訊、識別和反應。
附:英文原文
Title: A Human IgSF Cell-Surface Interactome Reveals a Complex Network of Protein-Protein Interactions
Author: Woj M. Wojtowicz, Jost Vielmetter, Ricardo A. Fernandes, Dirk H. Siepe, Catharine L. Eastman, Gregory B. Chisholm, Sarah Cox, Heath Klock, Paul W. Anderson, Sarah M. Rue, Jessica J. Miller, Scott M. Glaser, Melisa L. Bragstad, Julie Vance, Annie W. Lam, Scott A. Lesley, Kai Zinn, K. Christopher Garcia
Issue&Volume: 2020/08/20
Abstract: Cell-surface protein-protein interactions (PPIs) mediate cell-cell communication, recognition, and responses. We executed an interactome screen of 564 human cell-surface and secreted proteins, most of which are immunoglobulin superfamily (IgSF) proteins, using a high-throughput, automated ELISA-based screening platform employing a pooled-protein strategy to test all 318,096 PPI combinations. Screen results, augmented by phylogenetic homology analysis, revealed ~380 previously unreported PPIs. We validated a subset using surface plasmon resonance and cell binding assays. Observed PPIs reveal a large and complex network of interactions both within and across biological systems. We identified new PPIs for receptors with well-characterized ligands and binding partners for 「orphan」 receptors. New PPIs include proteins expressed on multiple cell types and involved in diverse processes including immune and nervous system development and function, differentiation/proliferation, metabolism, vascularization, and reproduction. These PPIs provide a resource for further biological investigation into their functional relevance and may offer new therapeutic drug targets.
DOI: 10.1016/j.cell.2020.07.025
Source: https://www.cell.com/cell/fulltext/S0092-8674(20)30933-8
Cell:《細胞》,創刊於1974年。隸屬於細胞出版社,最新IF:36.216