細胞表面熱敏蛋白質組圖譜揭示質膜上的擾動和藥物靶點
作者:
小柯機器人發布時間:2021/1/5 16:17:49
德國葛蘭素史克公司Marcus Bantscheff和H. Christian Eberl團隊在最新研究中,揭示了細胞表面熱敏蛋白質組圖譜揭示了質膜上的擾動和藥物靶標。這一研究成果於2021年1月4日發表在《自然-方法學》上。
研究人員利用細胞表面熱敏蛋白質組分析,以全面表徵配體誘導質膜中蛋白質豐度和熱穩定性的變化。研究證明藥物結合到細胞外受體和轉運蛋白導致刺激依賴性T細胞受體複合物的重塑,並描述了基於競爭的方法來測量G蛋白偶聯受體拮抗劑的靶標。響應TGFB受體抑制劑SB431542的處理,質膜蛋白質組重塑導致單羧酸鹽轉運蛋白MCT1/3部分內化,從而解釋了該藥物的抗轉移作用。
據介紹,許多藥物和內源性配體與細胞表面受體結合介導下遊信號傳導級聯的調節,並適應於質膜蛋白質組。由於生化特性和質膜蛋白含量低,對細胞表面動態過程的深入分析具有挑戰性。
附:英文原文
Title: Cell surface thermal proteome profiling tracks perturbations and drug targets on the plasma membrane
Author: Mathias Kalxdorf, Ina Gnthner, Isabelle Becher, Nils Kurzawa, Sascha Knecht, Mikhail M. Savitski, H. Christian Eberl, Marcus Bantscheff
Issue&Volume: 2021-01-04
Abstract: Numerous drugs and endogenous ligands bind to cell surface receptors leading to modulation of downstream signaling cascades and frequently to adaptation of the plasma membrane proteome. In-depth analysis of dynamic processes at the cell surface is challenging due to biochemical properties and low abundances of plasma membrane proteins. Here we introduce cell surface thermal proteome profiling for the comprehensive characterization of ligand-induced changes in protein abundances and thermal stabilities at the plasma membrane. We demonstrate drug binding to extracellular receptors and transporters, discover stimulation-dependent remodeling of T cell receptor complexes and describe a competition-based approach to measure target engagement of G-protein-coupled receptor antagonists. Remodeling of the plasma membrane proteome in response to treatment with the TGFB receptor inhibitor SB431542 leads to partial internalization of the monocarboxylate transporters MCT1/3 explaining the antimetastatic effects of the drug. Cell surface thermal proteome profiling allows characterization of ligand-induced changes in protein abundances and thermal stabilities at the plasma membrane.
DOI: 10.1038/s41592-020-01022-1
Source: https://www.nature.com/articles/s41592-020-01022-1