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TAp63gamma is required for the late stages of myogenesis.


ABSTRACT: p53 family members, p63 and p73, play a role in controlling early stage of myogenic differentiation. We demonstrated that TAp63gamma, unlike the other p53 family members, is markedly up-regulated during myogenic differentiation in murine C2C7 cell line. We also found that myotubes formation was inhibited upon TAp63gamma knock-down, as also indicated by atrophyic myotubes and reduction of myoblasts fusion index. Analysis of TAp63gamma-dependend transcripts identified several target genes involved in skeletal muscle contractility energy metabolism, myogenesis and skeletal muscle autocrine signaling. These results indicate that TAp63gamma is a late marker of myogenic differentiation and, by controlling different sub-sets of target genes, it possibly contributes to muscle growth, remodeling, functional differentiation and tissue homeostasis.

SUBMITTER: Cefalu S 

PROVIDER: S-EPMC4615066 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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TAp63gamma is required for the late stages of myogenesis.

Cefalù S S   Lena A M AM   Vojtesek B B   Musarò A A   Rossi A A   Melino G G   Candi E E  

Cell cycle (Georgetown, Tex.) 20150101 6


p53 family members, p63 and p73, play a role in controlling early stage of myogenic differentiation. We demonstrated that TAp63gamma, unlike the other p53 family members, is markedly up-regulated during myogenic differentiation in murine C2C7 cell line. We also found that myotubes formation was inhibited upon TAp63gamma knock-down, as also indicated by atrophyic myotubes and reduction of myoblasts fusion index. Analysis of TAp63gamma-dependend transcripts identified several target genes involved  ...[more]

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