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精神病风险因子RBM12编码了一个新的抑制器GPCR/cAMP信号传导的抑制器
Khairunnisa M Semesta1, Angelica Garces1, Nikoleta G Tsvetanova1
1Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina, USA.
The Journal of biological chemistry
|August 5, 2023
概括
RNA结合蛋白12 (RBM12) 调节了G蛋白结合受体/cAMP/蛋白激酶A信号传递. 失去RBM12会导致神经元信号通路的过度活跃,这可能解释了它在精神分裂症和精神病中的作用.
科学领域:
- 分子生物学分子生物学
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
背景情况:
- 家族性精神分裂症和精神病与RBM12有关,RBM12是一种高透率的危险因素.
- 精确的细胞功能和RBM12相关途径在很大程度上是未知的.
- 了解RBM12的作用对于阐明精神疾病的机制至关重要.
研究的目的:
- 为了划分RBM12.12的细胞功能.
- 识别由RBM12.2规范的信号通路.
- 研究RBM12变体对神经元信号传递的影响.
主要方法:
- 使用了HEK293细胞和人类iPSC衍生的神经元.
- 评估的G蛋白结合受体/cAMP/蛋白激酶A (GPCR/cAMP/PKA) 信号传导.
- 分析了对RBM12枯竭和GPCR刺激的反应中的基因表达变化.
主要成果:
- RBM12作为GPCR/cAMP/PKA信号轴的新型抑制剂.
- 失去RBM12会导致过度活跃的cAMP产生,增加PKA活性,并改变神经元的转录反应.
- 减少RBM12会改变关键信号分子的表达,包括腺环酶和固酶.
结论:
- 在调节GPCR/cAMP/PKA信号传递方面,RBM12起着至关重要的,以前未知的作用.
- 对RBM12的调节失调会影响神经元信号通路,这与精神分裂症和精神病有关.
- 在调节基因表达方面RBM12的功能为其在神经元生理学和病理生理学中的作用提供了一个分子机制.
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