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Hsa-miR-874-3p 减少了RGS4-1异型体内内表达的内源性表达
Feng-Ling Xu1,2, Bao-Jie Wang1
1School of Forensic Medicine, China Medical University, Shenyang 110122, China.
Genes
|August 29, 2024
概括
在精神分裂症中降低RGS4-1水平可能是由于hsa-miR-874-3p. 这种微RNA的目标是RGS4基因.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 调节者G蛋白信号传递4-1 (RGS4-1) 异型水平在精神分裂症患者的背侧前额皮质 (DLPFC) 中降低.
- 这种减少RGS4-1表达的潜在机制仍然不清楚.
- 3'未翻译区域 (3'UTRs) 是已知的mRNA拼接变异水平的调节者.
研究的目的:
- 研究RGS4基因的3'UTR在控制RGS4-1异型表达中的调节作用.
- 确定可能准RGS4 3'UTR并影响RGS4-1水平的特定微RNA (miRNA).
- 阐明 hsa-miR-874-3p 影响 RGS4-1 表达的机制.
主要方法:
- 重组pmir-GLO载体的构建,其中包含截断的RGS4 3'调节区域 (3R1-3R6).
- 在HEK-293,SK-N-SH和U87细胞中进行双化酶记者测定,以确定功能区域并预测miRNA结合位点.
- 在预测miRNAs的短暂转染后进行西斑分析和双露西法酶测定,包括hsa-miR-874-3p模仿和突变结构.
主要成果:
- 在RGS4 3'UTR中的功能性监管区域被确定为+401-+789,+789-+1152和+1562-+1990.
- 预计涉及精神疾病的Hsa-miR-874-3p将准RGS4 3'UTR的+789-+1152区域.
- 与hsa-miR-874-3p模拟和RGS4 3'UTR构造 (3R1) 的同时传染降低了记者活性,这种效应被一个缺少+853-+859区域的突变构造 (m3R1) 逆转,表明了特定的向. Hsa-miR-874-3p显著降低了内源RGS4-1表达.
结论:
- Hsa-miR-874-3p直接抑制了RGS4-1异型的表达.
- 抑制机制涉及hsa-miR-874-3p针对RGS4 3'UTR中的特定序列+853-+859的向.
- 这一发现为在精神分裂症中观察到的RGS4-1水平降低提供了潜在的分子机制.
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