On the tyrosine kinase mechanism of the novel effect of insulin and insulinlike growth factor I. Stimulation of the adenylyl cyclase system in muscle tissues

Biochemical Pharmacology
Marianna PertsevaK V Derkach

Abstract

For the first time, insulinlike growth factor I (IGF-I), like insulin (Pertseva et al., Comp Biochem Physiol 112: 689-695, 1995), was shown to exercise a GTP-dependent stimulating action on adenylyl cyclase (AC; EC 4.6.1.1.) activity in the muscle tissues (membrane fraction) of mammal (rat) and mollusc (Anodonta cygnea). By studying the mechanism of the effect of peptides with selective inhibitors of tyrosine kinase activity, tyrphostin 47 (RG50864, 3,4-dihydroxy-alpha-cyanothiocinnamamide) and genistein (4,5,7-trihydroxyisoflavone), it was found that receptor tyrosine kinase is involved in this action. The data obtained suggest that the stimulating effect of insulin and IGF-1 is produced via the following signalling system: receptor tyrosine kinase --> stimulatory G-protein --> AC. Thus, the existence of a novel signalling pathway of transduction of signals generated by insulin and related peptides was hypothesised.

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Citations

Aug 25, 2001·Journal of Physiology and Biochemistry·P L LorenzoM Illera
Jan 14, 2003·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·M N PertsevaL A Kuznetsova
Feb 17, 2001·Nitric Oxide : Biology and Chemistry·M PapayianniP A Molyvdas
Jan 5, 2006·Canadian Journal of Physiology and Pharmacology·Georges E HaddadSonya K Sobrian
Dec 22, 1999·The American Journal of Physiology·L J DaiG A Quamme

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Cell Signaling by Tyrosine Kinases

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