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在慢性胰腺炎中对基米素样蛋白酶 (CTRL) 的遗传和功能分析
Katharina Eiseler1, Lea Neppl1, Andreas W Schmidt2
1Paediatric Nutritional Medicine, Else Kröner Fresenius Center for Nutritional Medicine (EKFZ), Technical University of Munich (TUM), Freising, Germany.
概括
基因特异性基因类蛋白酶 (CTRL) 的遗传变异被研究为早期出现的慢性胰腺炎 (CP). 功能丧失的CTRL变异在患者中并不比较常见,这表明CTRL不是CP的重要风险因素.
科学领域:
- 遗传学 遗传学 是一个
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 遗传倾向是早期出现慢性胰腺炎 (CP) 发病的关键.
- 消化酶基因中的几种遗传变化是已知的危险因素.
- 许多早期发病的CP病例缺乏确定的遗传原因.
研究的目的:
- 作为慢性胰腺炎的潜在遗传风险因素,研究基米素样蛋白酶 (CTRL).
- 在CP患者中分析CTRL变异的遗传和功能影响.
主要方法:
- 1005名非酒精性CP患者和1594名对照患者的外序列测序,以确定CTRL变异.
- 西方斑块和活性测试用于评估CTRL分泌和蛋白质分解活性.
- 测量BiPmRNA的表达,以评估内细胞网膜 (ER) 的压力.
主要成果:
- 确定了13种异构的非同义CTRL变异;五种是专用于患者,三种用于对照.
- 四种变体显示蛋白酶活性减少或消除,而三种表现出分泌缺陷.
- 对CTRL变异的细胞内保留并没有诱导显著的ER压力.
结论:
- 几种CTRL变异影响蛋白酶功能和分泌,在患者和对照中观察到.
- 在CP患者中,CTRL功能丧失变异并没有显著增加.
- 在慢性胰腺炎的发展中,CTRL不太可能是主要的遗传风险因素.
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