鉴定了一种精神病风险基因NISCH在3p21.1 GWAS位点介导树状脊柱形态发生和认知功能
Zhi-Hui Yang1,2, Xin Cai1,2, Zhong-Li Ding1,2
1Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
研究人员确定了与精神分裂症和双相情感障碍相关的精神病风险基因NISCH,该基因影响大脑细胞结构和认知功能. 针对尼沙林的抗高血压药物显示出治疗这些心理健康状况的潜力.
科学领域:
- 神经遗传学 神经遗传学
- 精神疾病 精神疾病
- 分子生物学分子生物学
背景情况:
- 精神分裂症和双相情感障碍 (BD) 具有共同的遗传和病因因素.
- 染色体3p21.1上的特定SNP与精神分裂症和BD有关.
- 这种SNP与Alu多态 (rs71052682) 存在连接不平衡,该多态增强了基因转录.
研究的目的:
- 研究 Alu 多态 rs71052682 和 NISCH 基因之间的联系.
- 检查尼沙林 (NISCH) 的生理和认知影响.
- 探索针对尼沙林治疗精神疾病的治疗潜力.
主要方法:
- 通过CRISPR/Cas9基因组编辑和定量PCR来研究Alu多态性-NISCH相关性.
- Hi-C数据分析以确认染色质相互作用.
- 在小鼠中进行神经元培养,免疫光,共免疫沉和立体毒性注射,以评估尼沙林的功能.
- 行为测试和药物治疗,以评估治疗效果.
主要成果:
- 删除Alu序列减少了NISCH mRNA的表达,表明它的调节作用.
- 在精神病患者的大脑组织中观察到高NISCH表达,并根据遗传风险预测.
- 过度表达NISCH改变了小鼠的树突脊柱密度和空间工作记忆受损.
- 针对尼沙林的抗高血压药物 (克罗尼丁,蒂扎尼丁) 降低了NISCH mRNA并挽救了记忆缺陷.
结论:
- 在3p21.1 GWAS locus.中,NISCH被确定为精神病风险基因.
- 尼沙林会影响树突性脊柱形态发生和认知功能.
- 尼沙林在精神疾病中具有未来治疗发展的潜力.
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