Mitochondrial AIF protein involved in skeletal muscle regeneration.
The mitochondrial flavoprotein apoptosis-inducing factor (AIF) has proved to be either the main mediator of apoptosis or an anti-apoptotic factor via its putative oxidoreductase and peroxide scavenging activities. We report here that 100 muM hydrogen peroxide (H2O2) induced the proliferation of C2C12 myoblasts and over-expression of AIF simultaneously in vitro. Immunofluorescence showed that the over-expression of AIF was located in the cytoplasm. The immunopositive AIF was detected in nuclei 27 days after denervation of skeletal muscle, but in the cytoplasm it was detected 27 days after fiber-damaged skeletal muscle. AIF may be a factor involved in skeletal muscle regeneration.
Department of Anatomy, Southern Medical University, Guangdong Provinical Tissue Construction and Inspection Key Lab, Guangzhou, Guangdong, China. qqiuxzh@yahoo.com.cn
Xiao-Zhong
XZ
Qiu
Lei
L
Yu
Gui-Hua
GH
Lai
Le-Yu
LY
Wang
Bing
B
Chen
Jun
J
Ouyang
D000818:Animals; D051033:Apoptosis Inducing Factor / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D002460:Cell Line; D006861:Hydrogen Peroxide / Q000378:metabolism; D008297:Male; D051379:Mice; D024101:Mitochondrial Proteins / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D024510:Muscle Development / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012038:Regeneration / Q000502:physiology*
D051033:Apoptosis Inducing Factor; D024101:Mitochondrial Proteins; D006861:Hydrogen Peroxide