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2017 ; 22
(ä): 10
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LncRNA H19 promotes the differentiation of bovine skeletal muscle satellite cells
by suppressing Sirt1/FoxO1
#MMPMID28652859
Xu X
; Ji S
; Li W
; Yi B
; Li H
; Zhang H
; Ma W
Cell Mol Biol Lett
2017[]; 22
(ä): 10
PMID28652859
show ga
BACKGROUND: H19 is a well-characterized Long noncoding RNA (lncRNA) that has been
proven to promote myoblast differentiation in humans and mice. However, its
mechanism of action is still not fully interpreted. METHODS: Using RT-qPCR, we
examined H19 RNA levels in various tissues from 1-week, 1-month, 6-month and
36-month old male cattle (i.e., newborn, infant, young and adult). The protein
and mRNA levels of MyoG, MyHC, Sirt1 and FoxO1 in the satellite and C(2)C(12)
cells with an H19 silencing or overexpression vector were respectively detected
using western blot and real-time qPCR. RESULTS: H19 was highly expressed in
skeletal muscle at all the studied ages. High expression of H19 was required for
the differentiation of bovine satellite cells. Knockdown of H19 caused a
remarkable increase in the myoblast-inhibitory genes Sirt1/FoxO1, suggesting that
H19 suppresses Sirt1/FoxO1 expression during myogenesis. Western blotting
analysis of co-transfection of Sirt1 or FoxO1 expression vectors with pcDNA-H19
indicated that Sirt1/FoxO1 overexpression neutralized the promotion of myoblast
differentiation through transfection of pcDNA-H19. CONCLUSION: H19 promoted the
differentiation of bovine skeletal muscle satellite cells by suppressing
Sirt1/FoxO1.