Exp Ther Med:长链非编码RNA XIST通过抑制骨髓间充质干细胞分化来促进骨质疏松症

2019-01-26 MedSci MedSci原创

本研究旨在确定骨质疏松症(OP)发生和发展过程中关键的长非编码(lnc)RNA,并探索相关的分子机制。首先,筛选基因表达综合(GEO)数据集,关键词“骨质疏松症”和“HG-133A”。 RankProd R包用于计算OP中失调的lncRNA。然后,从3周龄Sprague Dawley大鼠收获的骨髓间充质干细胞(BM-MSC)用于检测成骨细胞分化。在过表达或干扰X-无活性特异性转录物(XIST)后,

本研究旨在确定骨质疏松症(OP)发生和发展过程中关键的长非编码(lnc)RNA,并探索相关的分子机制。

首先,筛选基因表达综合(GEO)数据集,关键词“骨质疏松症”和“HG-133A”。 RankProd R包用于计算OP中失调的lncRNA。然后,从3周龄Sprague Dawley大鼠收获的骨髓间充质干细胞(BM-MSC)用于检测成骨细胞分化。在过表达或干扰X-无活性特异性转录物(XIST)后,使用逆转录-定量聚合酶链反应和蛋白质印迹分析检测BM-MSC中的成骨相关基因和蛋白质。还进行碱性磷酸酶(ALP)和茜素红S染色以测量BM-MSC的成骨能力。

来自两个数据集的结果表明6个lncRNA在OP中失调。值得注意的是,XIST是不同疾病中的关键lncRNA,随后被选择用于分析。结果显示,与正常对照相比,OP患者的血浆和单核细胞中XIST明显上调。此外,结果表明,XIST的过表达明显抑制BM-MSCs中的成骨细胞分化,这可通过ALP,含γ-羧基谷氨酸的骨蛋白和瘤相关转录因子2的表达降低,ALP活性降低和钙数量减少来证明。然而,XIST的干扰在BM-MSC中表现出相反的生物学效应。

总之,XIST在OP患者的血清和单核细胞中高度表达。此外,研究结果表明XIST可抑制BM-MSCs的成骨分化。 

原始出处:

Chen X, Yang L, et al., Long non-coding RNA XIST promotes osteoporosis through inhibiting bone marrow mesenchymal stem cell differentiation. Exp Ther Med. 2019 Jan;17(1):803-811. doi: 10.3892/etm.2018.7033. Epub 2018 Nov 29.

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    2019-04-07 d830384
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    2019-01-27 Eleven17
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