人乳中脂代谢相关微小RNA的研究进展

摘要

Human breast milk contains a good balance of nutrients.In recent years,researchers have found that it contains not only abundant nutrients,but also different active components,and MicroRNAs (miRNA) are included.MiRNA are endogenous non-coding RNA,consisting of 21 to 25 nucleotides in length.They play an important role in regulating a variety of biological processes.In the miRNA confirmed in human breast milk,let-7、miRNA-30b and miRNA-378 are highly expressed and researches have already demonstrated that these miRNA are participating in the regulation of adipocytes differentiation,lipid accumulation and sugar and lipid metabolism.%人乳含有丰富均衡的营养成分.近年研究证实人乳不仅含丰富的营养素,亦存在具有重要调节作用的微小RNA(miRNA).miRNA是长约21～25个核苷酸长度的非编码的小RNA,其在生物体的增殖、发育、分化、凋亡、应激、脂质代谢及肿瘤发生发展等进程中起重要的调节作用.人乳中的miRNA主要以微泡形式存在,其中let-7、miRNA-30b及miRNA-378等含量丰富,这些miRNA参与脂肪细胞分化、脂质积聚和糖脂代谢调控.