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CIDEB promotes lipid deposition in goat intramuscular adipocytes |
Zhuohan Huang2 
, Qi Li1, Changheng Yang1
, Changhui Zhang1
, Lian Huang1
, Yaqiu Lin1,2
, Yong Wang1,2
, Hua Xiang1,2
, Jiangjiang Zhu1,2,3,*
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1Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Southwest Minzu University, Chengdu 610225, China, Chengdu, China
2Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization (Southwest Minzu University), Ministry of Education, Chengdu 610041, China, Chengdu, China
3Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu 610225, China, Chengdu, China |
Correspondence:
Jiangjiang Zhu, Tel: +18781923075, Fax: +18781923075, Email: huangzhuohan0208@163.com
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Received: 19 August 2024 • Revised: 28 September 2024 • Accepted: 19 August 2024 |
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| Abstract |
Objective
CIDEB (Cell death-inducing DNA fragmentation factor alpha-like effector B), a family member of CIDEs (Cell death-inducing DFF45-like effectors), is well known as a crucial regulator for lipid metabolic signaling pathways in various metabolic tissues and secretory glands. However, its role in regulating intramuscular fat (IMF) deposition in goat remains unclear.
Methods
The expression vector pcDNA3.1-CIDEB was constructed and transfected into goat intramuscular preadipocytes; the overexpression and interference efficiency and expression of genes related to lipid metabolism were measured by Real-time PCR; the effect of overexpression of CIDEB and interfering with CIDEB on lipid droplet formation was observed by Oil Red O staining and GPO-Trinder enzymatic reaction. Then RNA-Seq was used to investigate the metabolic pathway of CIDEB affecting adipocyte deposition in goat intramuscular preadipocytes.
Results
Overexpression of CIDEB significantly promoted the lipid droplets accumulation and the triglyceride deposition, and significantly upregulated the expression of genes related to lipid metabolism. After overexpression of CIDEB in goat intramuscular preadipocytes, in total 171 differentially expressed genes (DEGs) were found, including 122 up-regulated and 49 down-regulated DEGs, and the top three significantly changed pathways filtered by Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis were Cocaine addiction, Amphetamine addiction and Malaria pathways. Conversely, the silencing of CIDEB significantly reduced lipid accumulation in goat intramuscular preadipocytes, meanwhile changed the expression of lipid metabolism genes. For CIDEB silencing, a total of 2140 DEGs were found, including 1252 up-regulated and 888 down-regulated DEGs, and the top three significantly changed pathways filtered by KEGG analysis were Ribosome, Thyroid hormone signaling pathway and Alzheimer disease.
Conclusion
The expression of CIDEB can significantly promote lipid deposition of intramuscular adipocytes in goats, and these results provide important data to support further clarifying the mechanism of CIDEB gene on the regulation of intramuscular adipogenesis, and the IMF formation in goat. |
| Keywords:
CIDEB; Goat; Intramuscular preadipocytes; Lipid; Lipid deposition |
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