皮林变体E148Q增强了炎症酶激活和cis中的致病突变的影响
Thomas Reygaerts1,2, Pawat Laohamonthonkul1,2, Katja Hrovat-Schaale1,2
1Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.
Rheumatology (Oxford, England)
|July 23, 2023
概括
皮林的p.E148Q变体增强了炎症酶的激活,导致家族地中海热 (FMF) 等自身炎症性疾病. 这个变种这种变种.
科学领域:
- 遗传学和分子生物学
- 免疫学 免疫学 免疫学
- 自燃性炎症疾病 自燃性炎症疾病
背景情况:
- 皮林中的p.E148Q变体是普遍存在的 (高达29%) 并与自身炎症状况相关,如血管炎和家族地中海热 (FMF).
- 对于p.E148Q在FMF病变发生过程中的确切作用,特别是当与其他pyrin变体一起发现时,仍然不清楚.
研究的目的:
- 为了功能性验证p.E148Q变体是否增强了pyrin形成活性炎症体复合物的能力.
- 调查p.E148Q变异在自身炎症性疾病中的遗传模式和临床意义.
主要方法:
- 对澳大利亚自身炎症疾病注册表 (AADRY) 的分析,用于p.E148Q皮林变异的遗传模式.
- 使用HEK293T和THP-1细胞系进行体外实验,以评估对p.E148Q变异体表达的反应中炎症酶形成和细胞因子分泌 (IL-1β,IL-18) 的情况.
主要成果:
- 在患有自身炎症性疾病的个体中观察到p.E148Q变异,有时与其他pyrin变异一起.
- 实验室研究表明,p.E148Q素自发地增强炎症细胞形成,并增加IL-1β和IL-18的分泌.
- 在cis中具有已知的FMF突变的p.E148Q变体显著增强了炎症酶激活.
结论:
- 这种p.E148Q皮林变体在体外显然增强了炎症酶激活.
- 当存在与FMF突变的cis时,p.E148Q变异的效果是附加的,这可能解释了在一些FMF家族中观察到的支配性遗传.
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