Interactions between Ligand-Bound EGFR and VEGFR2

JOURNAL OF MOLECULAR BIOLOGY

卷:433

Article

Hristova, Kalina¹ 

[1] Johns Hopkins Univ, Inst NanoBioTechnol, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

关键词: receptor tyrosine kinases;    EGFR;    VEGFR2;    heterooligomers;    cell signaling;   

DOI  :  10.1016/j.jmb.2021.167006

来源: Elsevier

【 摘 要 】

In this work, we put forward the provocative hypothesis that the active, ligand-bound RTK dimers from unrelated subfamilies can associate into heterooligomers with novel signaling properties. This hypothesis is based on a quantitative FRET study that monitors the interactions between EGFR and VEGFR2 in the plasma membrane of live cells in the absence of ligand, in the presence of either EGF or VEGF, and in the presence of both ligands. We show that direct interactions occur between EGFR and VEGFR2 in the absence of ligand and in the presence of the two cognate ligands. However, there are not significant heterointeractions between EGFR and VEGFR2 when only one of the ligands is present. Since RTK dimers and RTK oligomers are believed to signal differently, this finding suggests a novel mechanism for signal diversification. (C) 2021 Elsevier Ltd. All rights reserved.

【 授权许可】

Free