文献类型： 外文期刊
第一作者： Zhang, Dongjie
作者： Zhang, Dongjie;Ma, Shouzheng;Wang, Liang;Liu, Di
作者机构：
关键词： Pig; Adipogenesis; Lipid metabolism; lncRNA44154
期刊名称：GENE （ 影响因子：2.4； 五年影响因子：2.8 ）
ISSN： 0378-1119
年卷期： 2025 年 933 卷
页码：
收录情况： SCI
摘要： With the development of high-throughput sequencing technology, numerous unknown long noncoding RNAs (lncRNAs) have been discovered. Preliminary research found that after being subjected to low-temperature enviroment, lncRNA44154 expression in the subcutaneous fat of pigs significantly increased. In order to analyze its biological function and regulatory mechanism, qRT-PCR was used to detect its spatiotemporal expression pattern. The nucleoplasmic isolation and FISH were used to locate it subcellular. Through overexpression or interference assays discussed the effect of lncRNA44154 on adipocyte proliferation and differentiation. RNA-seq was used to screen the biological pathways that lncRNA44154 may be involved in. RNA-pull down was used to find the interaction protein and double luciferase reporter gene detection experiment was used to validate the target gene. It was found that the expression of lncRNA44154 had tissue specificity and played a role in adipocyte proliferation. It was expressed in both cytoplasm and nucleus. After overexpression of lncRNA44154 in adipocytes, the expression level of Cyclins B, D, and E were all up-regulated and the cell proliferation ability was significantly enhanced. The number of positive cells increased significantly and the DNA replication activity was significantly enhanced. LncRNA44154 can promote the proliferation of porcine preadipocytes by encouraging cells to enter the S phase of the cell cycle. The result of interfering with lncRNA44154 is the opposite. Further analysis revealed that lncRNA44154 regulates intracellular lipid metabolism, inhibits the production of intracellular lipid droplets, and inhibits preadipocyte differentiation. RNA-seq results indicate that lncRNA44154 may be involved in biological pathways such as AMPK, PPAR and cAMP signaling pathway. It may work by regulating the RPS4X gene. This research may provide a new perspective for investigating the regulation of adipose metabolism by lncRNAs.
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