Bone marrow mesenchymal stem cell-derived exosomal miR-34c-5p ameliorates RIF by inhibiting the core fucosylation of multiple proteins.

Bone marrow mesenchymal stem cell-derived exosomal miR-34c-5p ameliorates RIF by inhibiting the core fucosylation of multiple proteins.
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骨髓间充质干细胞来源的外泌体 miR-34c-5p 通过抑制多种蛋白质的核心岩藻糖基化来改善 RIF。

DOI:
10.1016/j.ymthe.2021.10.012
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发表时间:
2022-02-02
期刊:
Molecular therapy : the journal of the American Society of Gene Therapy
影响因子:
--
通讯作者:
Lin H
Lin H
中科院分区:
其他
文献类型:
--
作者:
Hu X;Shen N;Liu A;Wang W;Zhang L;Sui Z;Tang Q;Du X;Yang N;Ying W;Qin B;Li Z;Li L;Wang N;Lin H

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肾间质纤维化(RIF)是慢性肾脏疾病中一种无法治愈的病理病变。周细胞活化是RIF的主要病理特征。成纤维细胞和巨噬细胞活化也参与RIF。研究表明,核心聚焦化(CF)是一种重要的蛋白质翻译后修饰,作为中心样靶点,通过调节多种促纤维化信号通路,在周细胞活化和RIF中起关键作用。在这里,我们揭示了间充质干细胞(MSC)衍生的外泌体特异性地存在于损伤的肾脏中,并通过抑制CF传递microRNA (miR)-34c-5p来降低细胞活化和RIF。此外,我们发现cd81 -表皮生长因子受体(EGFR)配体受体复合物有助于外泌体miR-34c-5p进入周细胞、成纤维细胞和巨噬细胞。总之,我们的研究结果揭示了msc来源的外泌体在通过CF抑制多细胞激活中的新作用,并为肾纤维化提供了潜在的干预策略。肌成纤维细胞增殖是肾间质纤维化(RIF)的主要事件之一,它依赖于细胞活化。然而,人们对其潜在机制知之甚少。Lin等人报道,来自间充质干细胞外体的microRNA-34c-5p抑制细胞激活所需的核心聚焦,表明可能的RIF治疗策略。
Renal interstitial fibrosis (RIF) is an incurable pathological lesion in chronic kidney diseases. Pericyte activation is the major pathological characteristic of RIF. Fibroblast and macrophage activation are also involved in RIF. Studies have revealed that core fucosylation (CF), an important post-translational modification of proteins, plays a key role in pericyte activation and RIF by regulating multiple profibrotic signaling pathways as a hub-like target. Here, we reveal that mesenchymal stem cell (MSC)-derived exosomes reside specifically in the injured kidney and deliver microRNA (miR)-34c-5p to reduce cellular activation and RIF by inhibiting CF. Furthermore, we showed that the CD81-epidermal growth factor receptor (EGFR) ligand-receptor complex aids the entry of exosomal miR-34c-5p into pericytes, fibroblasts, and macrophages. Altogether, our findings reveal a novel role of MSC-derived exosomes in inhibiting multicellular activation via CF and provide a potential intervention strategy for renal fibrosis. Myofibroblast proliferation, one of the major events in renal interstitial fibrosis (RIF), relies on cellular activation. However, the underlying mechanisms are poorly understood. Lin et al. report that microRNA-34c-5p from mesenchymal stem cell exosomes inhibits the core fucosylation needed for cellular activation, indicating a possible RIF treatment strategy.
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