scholarly journals Absence of renal enlargement in fructose-fed proximal-tubule-select insulin receptor (IR), insulin-like-growth factor receptor (IGF1R) double knockout mice

2016 ◽  
Vol 4 (23) ◽  
pp. e13052 ◽  
Author(s):  
Lijun Li ◽  
Marcus Byrd ◽  
Kwame Doh ◽  
Patrice D. Dixon ◽  
Hwal Lee ◽  
...  
Keyword(s):  
Growth Factor ◽  
Proximal Tubule ◽  
Insulin Receptor ◽  
Knockout Mice ◽  
Growth Factor Receptor ◽  
Insulin Like Growth Factor ◽  
Double Knockout ◽  
Renal Enlargement

scholarly journals Secretion of Annexin II via Activation of Insulin Receptor and Insulin-like Growth Factor Receptor

2002 ◽  
Vol 278 (6) ◽  
pp. 4205-4215 ◽  
Author(s):  
Wei-Qin Zhao ◽  
Gina H. Chen ◽  
Hui Chen ◽  
Alessia Pascale ◽  
Lakshmi Ravindranath ◽  
...  
Keyword(s):  
Growth Factor ◽  
Insulin Receptor ◽  
Growth Factor Receptor ◽  
Annexin Ii ◽  
Insulin Like Growth Factor

scholarly journals Determination of Alkali-Sensing Parts of the Insulin Receptor-Related Receptor Using the Bioinformatic Approach

Acta Naturae ◽  
2015 ◽  
Vol 7 (2) ◽  
pp. 80-86 ◽  
Author(s):  
I. E. Deyev ◽  
N. V. Popova ◽  
A. G. Petrenko
Keyword(s):  
Growth Factor ◽  
Insulin Receptor ◽  
Growth Factor Receptor ◽  
Ph Sensitive ◽  
Effective Concentration ◽  
The Body ◽  
Insulin Like Growth Factor ◽  
Extracellular Region ◽  
Half Maximal Effective Concentration ◽  
Receptor Family

IRR (insulin receptor-related receptor) is a receptor tyrosine kinase belonging to the insulin receptor family, which also includes insulin receptor and IGF-IR receptor. We have previously shown that IRR is activated by extracellular fluid with pH 7.9 and regulates excess alkali excretion in the body. We performed a bioinformatic analysis of the pH-sensitive potential of all three members of the insulin receptor family of various animal species (from frog to man) and their chimeras with swapping of different domains in the extracellular region. An analysis using the AcalPred program showed that insulin receptor family proteins are divided into two classes: one class with the optimal working pH in the acidic medium (virtually all insulin receptor and insulin-like growth factor receptor orthologs, except for the IGF-IR ortholog from Xenopus laevis) and the second class with the optimal working pH in the alkaline medium (all IRR orthologs). The program had predicted that the most noticeable effect on the pH-sensitive property of IRR would be caused by the replacement of the L1 and C domains in its extracellular region, as well as the replacement of the second and third fibronectin repeats. It had also been assumed that replacement of the L2 domain would have the least significant effect on the alkaline sensitivity of IRR. To test the in silico predictions, we obtained three constructs with swapping of the L1C domains, the third L2 domain, and all three domains L1CL2 of IRR with similar domains of the insulin-like growth factor receptor. We found that replacement of the L1C and L1CL2 domains reduces the receptors ability to be activated with alkaline pH, thus increasing the half-maximal effective concentration by about 100%. Replacement of the L2 domain increased the half-maximal effective concentration by 40%. Thus, our results indicate the high predictive potential of the AcalPred algorithm, not only for the pH-sensitive enzymes, but also for pH-sensitive receptors.

Upregulation of the Insulin Receptor and Type I Insulin-Like Growth Factor Receptor Are Early Events in Hepatocarcinogenesis

2011 ◽  
Vol 39 (3) ◽  
pp. 524-543 ◽  
Author(s):  
Eiman Aleem ◽  
Dirk Nehrbass ◽  
Fritz Klimek ◽  
Doris Mayer ◽  
Peter Bannasch
Keyword(s):  
Growth Factor ◽  
Insulin Receptor ◽  
Growth Factor Receptor ◽  
Type I ◽  
Insulin Like Growth Factor

scholarly journals Suppression of Cardiac Autophagy by Hyperinsulinemia in Insulin Receptor-Deficient Hearts Is Mediated by Insulin-Like Growth Factor Receptor Signaling

2019 ◽  
Vol 31 (6) ◽  
pp. 444-457
Author(s):  
Karla Maria Pires ◽  
Natalia S. Torres ◽  
Marcio Buffolo ◽  
River Gunville ◽  
Christin Schaaf ◽  
...  
Keyword(s):  
Growth Factor ◽  
Insulin Receptor ◽  
Growth Factor Receptor ◽  
Insulin Like Growth Factor ◽  
Receptor Signaling ◽  
Growth Factor Receptor Signaling

scholarly journals Type 1 Insulin-Like Growth Factor Receptor/Insulin Receptor Substrate 1 Signaling Confers Pathogenic Activity on Breast Tumor Cells Lacking REST

2015 ◽  
Vol 35 (17) ◽  
pp. 2991-3004 ◽  
Author(s):  
Kassondra Meyer ◽  
Brittany Albaugh ◽  
Barry Schoenike ◽  
Avtar Roopra
Keyword(s):  
Growth Factor ◽  
Insulin Receptor ◽  
Tumor Cells ◽  
Breast Tumor ◽  
Growth Factor Receptor ◽  
Insulin Receptor Substrate ◽  
Insulin Like Growth Factor ◽  
Insulin Receptor Substrate 1 ◽  
Breast Tumor Cells

Loss of repressor element 1 silencing transcription factor (REST) occurs in 20% of breast cancers and correlates with a poor patient prognosis. However, the molecular basis for enhanced malignancy in tumors lacking REST (RESTless) is only partially understood. We used multiplatform array data from the Cancer Genome Atlas to identify consistent changes in key signaling pathways. Of the proteins screened in the reverse-phase protein array, we found that insulin receptor substrate 1 (IRS1) is the most highly upregulated protein in RESTless breast tumors. Analysis of breast tumor cell lines showed that REST directly represses IRS1, and cells lacking REST have increased levels of IRS1 mRNA and protein. We find that the upregulation of IRS1 function is both necessary and sufficient for enhanced signaling and growth in breast cancer cells lacking REST. IRS1 overexpression is sufficient to phenocopy the enhanced activation of the signaling hubs AKT and mitogen-activated protein kinase (MAPK) of MCF7 cells lacking REST. Loss of REST renders MCF7 and MDA-MB-231 breast tumor cells dependent on IRS1 activity for colony formation in soft agar. Inhibition of the type 1 insulin-like growth factor receptor (IGF1R) reduces the enhanced signaling, growth, and migration in breast tumor cells that occur upon REST loss. We show that loss of REST induces a pathogenic program that works through the IGF1R/IRS1 pathway.

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