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当前对 microRNA 在白癜风中作用的认识。

Current insight into the roles of microRNA in vitiligo.

机构信息

Science and Technology Achievement Incubation Center, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong District, Kunming, 650500, Yunnan, China.

Department of Dermatology, The First Affiliated Hospital of Kunming Medical University, Kunming, China.

出版信息

Mol Biol Rep. 2020 Apr;47(4):3211-3219. doi: 10.1007/s11033-020-05336-3. Epub 2020 Feb 21.

Abstract

Vitiligo is a common chronic depigmented skin disease characterized by melanocyte loss or dysfunction in the lesion. The pathogenesis of vitiligo has not been fully clarified. Most studies have suggested that the occurrence and progression of vitiligo are due to multiple factors and gene interactions in which noncoding RNAs contribute to an individual's susceptibility to vitiligo. Noncoding RNAs, including microRNAs (miRNAs), are a hot topic in posttranscriptional regulatory mechanism research. miRNAs are noncoding RNAs with a length of approximately 22 nucleotides and play a negative regulatory role by binding to the 3'-UTR or 5'-UTR of the target mRNA to inhibit translation or initiate mRNA degradation. Previous studies have screened the differential expression profiles of miRNAs in the skin lesions, melanocytes, peripheral blood mononuclear cells (PBMCs) and sera of patients and mouse models with vitiligo. Moreover, several studies have focused on miRNA-25, miRNA-155 and other miRNAs involved in melanin metabolism, oxidative stress, and melanocyte proliferation and apoptosis. These miRNAs and regulatory processes further illuminate the pathogenesis of vitiligo and provide hope for the application of small molecules in the treatment of vitiligo. In this review, we summarize miRNA expression profiles in different tissues of vitiligo patients and the mechanisms by which key miRNAs mediate vitiligo development.

摘要

白癜风是一种常见的慢性色素脱失性皮肤病,其特征是皮损中黑素细胞缺失或功能障碍。白癜风的发病机制尚未完全阐明。大多数研究表明,白癜风的发生和发展是由于多种因素和基因相互作用的结果,其中非编码 RNA 有助于个体对白癜风的易感性。非编码 RNA 包括 microRNAs (miRNAs),是转录后调控机制研究的热点。miRNAs 是长度约为 22 个核苷酸的非编码 RNA,通过与靶 mRNA 的 3'UTR 或 5'UTR 结合来抑制翻译或启动 mRNA 降解,发挥负调控作用。先前的研究已经筛选了白癜风患者皮损、黑素细胞、外周血单核细胞 (PBMCs) 和血清中 miRNAs 的差异表达谱,以及白癜风小鼠模型。此外,一些研究集中在参与黑色素代谢、氧化应激以及黑素细胞增殖和凋亡的 miRNA-25、miRNA-155 等 miRNA 上。这些 miRNA 和调控过程进一步阐明了白癜风的发病机制,并为小分子在白癜风治疗中的应用提供了希望。在这篇综述中,我们总结了白癜风患者不同组织中 miRNA 的表达谱,以及关键 miRNA 介导白癜风发展的机制。

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