Chloride intracellular channel 5 modulates adipocyte accumulation in skeletal muscle by inhibiting preadipocyte differentiation
✍ Scribed by Feng-Na Li; Jing-Dong Yin; Jian-Jun Ni; Ling Liu; Hai-Yan Zhang; Min Du
- Book ID
- 102876138
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 863 KB
- Volume
- 110
- Category
- Article
- ISSN
- 0730-2312
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✦ Synopsis
Abstract
Intramuscular fat, the total lipid deposited within skeletal muscle, has been regarded as a potential factor responsible for meat quality in animal production and insulin resistance in humans. The objective of present study was to identify candidate genes which control intramuscular fat accumulation through using animal models. PIC pigs (lean‐type) and Rongchang pigs (obese‐type) were used. By scanning the mRNA samples of longissimus dorsi muscle with Affymetrix Gene‐Chip microarray technology, sus scrofa chloride intracellular channel 5 (CLIC5) was isolated, and its mRNA abundance and protein expression level were reversely related with the intramuscular fat content of pigs. Furthermore, over‐expression of CLIC5 dramatically increased the proliferation of 3T3‐L1 preadipocytes, while inhibited adipocytic differentiation accompanied by the down‐regulation of c/EBPα, LPL, and PPARγ protein. Our results suggest that CLIC5 might be a crucial regulator of adipose accumulation in skeletal muscle of pigs. J. Cell. Biochem. 110: 1013–1021, 2010. © 2010 Wiley‐Liss, Inc.