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Specific titin and myomesin domains stimulate myoblast proliferation.


ABSTRACT: Myofibrillar proteins titin and myomesin stimulated myoblast proliferation as determined by MTT-test and labelled thymidine incorporation in the DNA. Specific Fn type III and Ig-like domains of these proteins were able to exert mitogenic effects as well. Proliferative effect of Fn type III domains was highly sensitive to inhibition of Ca2+/calmodulin dependent protein kinase, whereas the effect of Ig-like domains showed greater sensitivity to the inhibition of adenylyl cyclase - cAMP - PKA pathway. IGF-1 autocrine signalling inhibition partially suppressed mitogenic effects revealed by both domain types.

SUBMITTER: Kravchenko IV 

PROVIDER: S-EPMC5614584 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Specific titin and myomesin domains stimulate myoblast proliferation.

Kravchenko Irina V IV   Furalyov Vladimir A VA   Popov Vladimir O VO  

Biochemistry and biophysics reports 20161230


Myofibrillar proteins titin and myomesin stimulated myoblast proliferation as determined by MTT-test and labelled thymidine incorporation in the DNA. Specific Fn type III and Ig-like domains of these proteins were able to exert mitogenic effects as well. Proliferative effect of Fn type III domains was highly sensitive to inhibition of Ca<sup>2+</sup>/calmodulin dependent protein kinase, whereas the effect of Ig-like domains showed greater sensitivity to the inhibition of adenylyl cyclase - cAMP  ...[more]

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