高水静压通过改变活性域来降低木胺类蛋白质诱导的炎症
Yun Li1, Chuyuan Li2, Fei Pan3
1Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
Food chemistry
|August 22, 2024
概括
高水位压力 (HHP) 通过改变它们的活性V裂域,有效地降低了木胺类蛋白质 (LcTLP) 的促炎活性. 这项研究表明,HHP是缓解TLP诱导炎症的有希望的方法.
科学领域:
- 食品科学 食品科学 食品科学
- 蛋白质化学 蛋白质化学
- 过敏性研究 研究过敏性研究
背景情况:
- 陶马丁类蛋白 (TLP) 存在于水果中,可以引起过敏和炎症反应.
- 石的陶马丁样蛋白 (LcTLP) 是一种已知的过敏原,具有促炎性质.
研究的目的:
- 调查高水静压 (HHP) 在降低利奇TLP (LcTLP) 促炎活性方面的有效性.
- 阐明LcTLP中HP诱导的变化背后的结构机制.
主要方法:
- 应用连续的高水压 (HHP) 处理 (250-500 MPa 持续5-10 分钟) 到LcTLP.
- 使用SDS-PAGE,循环二元化 (CD) 光谱和分子动力学模拟分析蛋白质结构.
- 使用ELISA和西欧布洛特的炎症反应的评估.
主要成果:
- 高平治疗 (250-500 MPa) 显著降低了LcTLP的促炎活性.
- 结构分析显示,HHP导致LcTLP展开和重新组装,β片含量下降和V裂纹活性域的不可逆转破坏.
- 分子动力学模拟证实了影响V裂纹的残留网络的显著变化.
结论:
- 高水位压力 (HHP) 是一种可行的技术,可以减轻木胺类蛋白质 (LcTLP) 的促炎潜力.
- 炎症活动的减少与结构性修改有关,特别是V裂域的改变,为HP的影响提供了结构性的洞察力.
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