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Title: Mitotic regulators and the SHP2-MAPK pathway promote IR endocytosis and feedback regulation of insulin signaling

Abstract

Insulin controls glucose homeostasis and cell growth through bifurcated signaling pathways. Dysregulation of insulin signaling is linked to diabetes and cancer. The spindle checkpoint controls the fidelity of chromosome segregation during mitosis. Here, we show that insulin receptor substrate 1 and 2 (IRS1/2) cooperate with spindle checkpoint proteins to promote insulin receptor (IR) endocytosis through recruiting the clathrin adaptor complex AP2 to IR. A phosphorylation switch of IRS1/2 orchestrated by extracellular signal-regulated kinase 1 and 2 (ERK1/2) and Src homology phosphatase 2 (SHP2) ensures selective internalization of activated IR. SHP2 inhibition blocks this feedback regulation and growth-promoting IR signaling, prolongs insulin action on metabolism, and improves insulin sensitivity in mice. We propose that mitotic regulators and SHP2 promote feedback inhibition of IR, thereby limiting the duration of insulin signaling. Targeting this feedback inhibition can improve insulin sensitivity.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Texas Southwestern Medical Center, Dallas, TX (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE; National Institutes of Health (NIH)
OSTI Identifier:
1566812
Grant/Contract Number:  
1R01GM124096
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
ENGLISH
Subject:
59 BASIC BIOLOGICAL SCIENCES; checkpoints; endocytosis; insulin signalling; x-ray crystallography

Citation Formats

Choi, Eunhee, Kikuchi, Sotaro, Gao, Haishan, Brodzik, Karolina, Nassour, Ibrahim, Yopp, Adam, Singal, Amit G., Zhu, Hao, and Yu, Hongtao. Mitotic regulators and the SHP2-MAPK pathway promote IR endocytosis and feedback regulation of insulin signaling. United States: N. p., 2019. Web. doi:10.1038/s41467-019-09318-3.
Choi, Eunhee, Kikuchi, Sotaro, Gao, Haishan, Brodzik, Karolina, Nassour, Ibrahim, Yopp, Adam, Singal, Amit G., Zhu, Hao, & Yu, Hongtao. Mitotic regulators and the SHP2-MAPK pathway promote IR endocytosis and feedback regulation of insulin signaling. United States. https://doi.org/10.1038/s41467-019-09318-3
Choi, Eunhee, Kikuchi, Sotaro, Gao, Haishan, Brodzik, Karolina, Nassour, Ibrahim, Yopp, Adam, Singal, Amit G., Zhu, Hao, and Yu, Hongtao. Mon . "Mitotic regulators and the SHP2-MAPK pathway promote IR endocytosis and feedback regulation of insulin signaling". United States. https://doi.org/10.1038/s41467-019-09318-3. https://www.osti.gov/servlets/purl/1566812.
@article{osti_1566812,
title = {Mitotic regulators and the SHP2-MAPK pathway promote IR endocytosis and feedback regulation of insulin signaling},
author = {Choi, Eunhee and Kikuchi, Sotaro and Gao, Haishan and Brodzik, Karolina and Nassour, Ibrahim and Yopp, Adam and Singal, Amit G. and Zhu, Hao and Yu, Hongtao},
abstractNote = {Insulin controls glucose homeostasis and cell growth through bifurcated signaling pathways. Dysregulation of insulin signaling is linked to diabetes and cancer. The spindle checkpoint controls the fidelity of chromosome segregation during mitosis. Here, we show that insulin receptor substrate 1 and 2 (IRS1/2) cooperate with spindle checkpoint proteins to promote insulin receptor (IR) endocytosis through recruiting the clathrin adaptor complex AP2 to IR. A phosphorylation switch of IRS1/2 orchestrated by extracellular signal-regulated kinase 1 and 2 (ERK1/2) and Src homology phosphatase 2 (SHP2) ensures selective internalization of activated IR. SHP2 inhibition blocks this feedback regulation and growth-promoting IR signaling, prolongs insulin action on metabolism, and improves insulin sensitivity in mice. We propose that mitotic regulators and SHP2 promote feedback inhibition of IR, thereby limiting the duration of insulin signaling. Targeting this feedback inhibition can improve insulin sensitivity.},
doi = {10.1038/s41467-019-09318-3},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {Mon Apr 01 00:00:00 EDT 2019},
month = {Mon Apr 01 00:00:00 EDT 2019}
}

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