Wenzhen Zhang, Sayed Haidar Abbas Raza, Bingzhi Li, Wucai Yang, Rajwali Khan, Bandar Hamad Aloufi, Gongwei Zhang, Fuyuan Zuo and Linsen Zan*,
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LncBNIP3 Inhibits Bovine Intramuscular Preadipocyte Differentiation via the PI3K-Akt and PPAR Signaling Pathways
Intramuscular fat (IMF) content is an economic trait in beef cattle that improves the meat quality. Studies have highlighted the correlation between long noncoding RNAs (lncRNAs) and IMF development. In this study, lncBNIP3 knockdown promoted bovine intramuscular preadipocyte differentiation. RNA-seq analysis of intramuscular preadipocytes with lncBNIP3 knockdown identified 230 differentially expressed genes. The PI3K-Akt and PPAR signaling pathways were enriched. lncBNIP3 interference promoted mRNA and protein expression of key genes in PI3K-Akt signaling pathway. LncBNIP3 interference reversed the effects of an AKT-inhibitor MK-2206 on Akt protein expression and lipid droplet accumulation, promoted mRNA and protein expression of essential genes in the PPAR signaling pathway, and ameliorated the inhibitory effects of a PPARg antagonist GW9662 on lipid accumulation. Therefore, lncBNIP3 inhibition of bovine intramuscular preadipocyte differentiation is likely mediated via the PI3K-Akt and PPAR signaling pathways. This study identified a valuable lncRNA with functional roles in IMF accumulation and revealed new strategies to improve beef quality.
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The Journal of Agricultural and Food Chemistry publishes high-quality, cutting edge original research representing complete studies and research advances dealing with the chemistry and biochemistry of agriculture and food. The Journal also encourages papers with chemistry and/or biochemistry as a major component combined with biological/sensory/nutritional/toxicological evaluation related to agriculture and/or food.
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