Abstrait

Effect of starvation on expression of troponin complex genes and ER stress associated genes in skeletal muscles

Kisang Kwon, Bo-Kyung Yoo, Younghwa Ko, Ji-Young Choi, O-Yu Kwon, Seung-Whan Kim

Little is known about the mechanism of gene expression changes in skeletal muscle during starvation. This study investigated the influence of starvation on gene expression of troponin complex (TnC, TnI and TnT), tropomyosin (Tpm), and endoplasmic reticulum (ER) stress associated proteins (BiP, calreticulin, PDI, and ATF6) in three kinds of skeletal muscles of Gryllus bimaculatus. Dorsal ventral flight muscle (DVM), dorsal longitudinal, and dorsal wing flight muscles (DWM) were identified as typical skeletal muscles by H&E staining. Obvious gene expression was detected in the DVM, but not in the DLM or DWM. In addition to gene expression in DVM, gene expression of decorin, a type of myokine, was also significantly increased by starvation. This is the first study that reports the effect of starvation on expression of troponin complex genes and ER stress associated genes in three types of skeletal muscles.