在膜细胞中缺乏与氨酸相互作用的蛋白质,在肥胖期间加剧了喘
Ji-Soo Jeong1, Jeong-Won Kim1, Jin-Hwa Kim1
1College of Veterinary Medicine (BK21 FOUR Program), Chungnam National University, 99 Daehak-ro, Daejeon, 34131, Republic of Korea.
Redox biology
|May 23, 2024
概括
肥胖通过增加炎症使喘恶化. 在肥胖引起的喘中增加的硫素相互作用蛋白 (TXNIP) 似乎是保护性的,而不是致病性的,这表明它对炎症有补偿作用.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢障碍 代谢障碍 代谢障碍
- 呼吸系统医学 呼吸系统医学
背景情况:
- 肥胖是喘发育和严重程度的已知危险因素.
- 将肥胖与喘联系在一起的精确分子机制仍然不完全理解.
- 铁素相互作用蛋白 (TXNIP) 与炎症过程有关.
研究的目的:
- 调查TXNIP在肥胖引起的喘病变中的作用.
- 为了确定肥胖症中TXNIP水平的升高是否有助于或防止喘症状.
主要方法:
- 在食正常或高脂肪饮食 (HFD) 的小鼠中使用Aspergillus oryzae蛋白酶诱导了喘.
- 在人类喘患者和实验小鼠的肺组织中测量了TXNIP表达.
- 喘诱导在膜类型2细胞特异性TXNIP缺陷 (TXNIPCre) 的小鼠中.
- 在体外研究中评估了TXNIP沉默细胞中的促炎性细胞因子表达.
主要成果:
- 与正常饮食小鼠相比,HFD养的小鼠表现出增加的自由脂肪酸,阿迪波金,活性氧物种和恶化的喘症状.
- 在人类喘患者和HFD诱导的喘小鼠中,TXNIP表达升高.
- 尽管TXNIP缺乏,但TXNIPCre小鼠显示喘症状恶化.
- 在体外,TXNIP沉默的细胞显示出最高的促炎细胞因子水平.
结论:
- 在肥胖引起的喘中增加TXNIP表达是缓解炎症的补偿反应.
- 缺乏TXNIP会加剧喘症状,这表明它有保护作用.
- 这些发现强调了TXNIP作为管理肥胖个体喘的潜在治疗标.
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