Quantifying the strength of heterointeractions among receptor tyrosine kinases from different subfamilies: Implications for cell signaling

Quantifying the strength of heterointeractions among receptor tyrosine kinases from different subfamilies: Implications for cell signaling
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量化不同亚家族受体酪氨酸激酶之间异质相互作用的强度:对细胞信号传导的影响

DOI:
10.1074/jbc.ra120.013639
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发表时间:
2020
影响因子:
4.8
通讯作者:
Hristova, Kalina
Hristova, Kalina
中科院分区:
生物学2区
文献类型:
--
作者:
Paul, Michael D.;Grubb, Hana N.;Hristova, Kalina

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受体酪氨酸激酶(RTK)是控制重要细胞过程如细胞生长、存活和分化的单程膜蛋白。越来越多的证据表明,来自不同亚家族的RTK可以相互作用,并且这些不同的相互作用可以产生重要的生物学后果。然而,这些异源相互作用往往被忽视,其强度是未知的。在这项工作中,我们研究了9个RTK对,表皮生长因子受体(EGFR)-EPH受体A2(EPHA 2),EGFR-血管内皮生长因子受体2(VEGFR 2),EPHA 2-VEGFR 2,EPHA 2-成纤维细胞生长因子受体1(FGFR 1),EPHA 2-FGFR 2,EPHA 2-FGFR 3,VEGFR 2-FGFR 1,VEGFR 2-FGFR 2和VEGFR 2-FGFR 3的异源相互作用,使用基于FRET的方法。令人惊讶的是,我们发现RTK异源二聚化和同源二聚化的强度可以是相似的,这强调了RTK异源相互作用在信号传导中的重要性。我们讨论了如何这些heterointeractions可以有助于RTK信号转导的复杂性,我们强调了探测质膜中的多种相互作用的定量FRET的效用。
Receptor tyrosine kinases (RTKs) are single-pass membrane proteins that control vital cell processes such as cell growth, survival, and differentiation. There is a growing body of evidence that RTKs from different subfamilies can interact and that these diverse interactions can have important biological consequences. However, these heterointeractions are often ignored, and their strengths are unknown. In this work, we studied the heterointeractions of nine RTK pairs, epidermal growth factor receptor (EGFR)–EPH receptor A2 (EPHA2), EGFR–vascular endothelial growth factor receptor 2 (VEGFR2), EPHA2–VEGFR2, EPHA2–fibroblast growth factor receptor 1 (FGFR1), EPHA2–FGFR2, EPHA2–FGFR3, VEGFR2–FGFR1, VEGFR2–FGFR2, and VEGFR2–FGFR3, using a FRET-based method. Surprisingly, we found that RTK heterodimerization and homodimerization strengths can be similar, underscoring the significance of RTK heterointeractions in signaling. We discuss how these heterointeractions can contribute to the complexity of RTK signal transduction, and we highlight the utility of quantitative FRET for probing multiple interactions in the plasma membrane.
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影响因子: 7.2
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