Megf10 deficiency impairs skeletal muscle stem cell migration and muscle regeneration.

Megf10 deficiency impairs skeletal muscle stem cell migration and muscle regeneration.
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DOI:
10.1002/2211-5463.13031
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发表时间:
2021-01
期刊:
影响因子:
2.6
通讯作者:
Kang PB
Kang PB
中科院分区:
生物学4区
文献类型:
--
作者:
Li C;Vargas-Franco D;Saha M;Davis RM;Manko KA;Draper I;Pacak CA;Kang PB

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The exact disease mechanism of MEGF10 deficiency, which causes a rare inherited myopathy, remains unknown. In mice, Megf10 deficiency is associated with slower proliferation and migration of satellite cells, as well as impaired skeletal muscle regeneration after skeletal muscle injury experiments. These studies demonstrate that Megf10 makes important contributions to the function of satellite cells in muscle regeneration. Biallelic loss‐of‐function MEGF10 mutations lead to MEGF10 myopathy, also known as early onset myopathy with areflexia, respiratory distress, and dysphagia (EMARDD). MEGF10 is expressed in muscle satellite cells, but the contribution of satellite cell dysfunction to MEGF10 myopathy is unclear. Myofibers and satellite cells were isolated and examined from Megf10−/− and wild‐type mice. A separate set of mice underwent repeated intramuscular barium chloride injections. Megf10−/− muscle satellite cells showed reduced proliferation and migration, while Megf10−/− mouse skeletal muscles showed impaired regeneration. Megf10 deficiency is associated with impaired muscle regeneration, due in part to defects in satellite cell function. Efforts to rescue Megf10 deficiency will have therapeutic implications for MEGF10 myopathy and other inherited muscle diseases involving impaired muscle regeneration.
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