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绘制动态高密度脂蛋白突触的地图.

Kathrin Frey1, Lucia Rohrer2, Fabian Frommelt3

  • 1Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland; Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland; Institute for Clinical Chemistry University Hospital Zurich, Zurich, Switzerland.

Atherosclerosis
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概括

高密度脂蛋白 (HDL) 与细胞的相互作用涉及称为HDL突触的复杂蛋白质集群. 这些突触,独立于清除受体B1 (SR-B1),影响HDL吸收,并提供新的治疗点.

关键词:
氨基酶 n n 氨基酶 n在CD13中,CD13是指CD13中,CD13是指CD13.化学蛋白质组学 化学蛋白质组学 化学蛋白质组学在 HDL 和 HDL 之间.高密度脂蛋白是一种高密度脂蛋白.互动组互动组是一个互动组.配体-受体相互作用拾荒者受体 B1 的情况.信号传输 信号传输空间蛋白型的形成一些表面的表面.

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科学领域:

  • 细胞生物学 细胞生物学
  • 生物化学 生物化学
  • 分子医学是分子医学.

背景情况:

  • 高密度脂蛋白 (HDL) 颗粒是异质的,与细胞表面蛋白相互作用,影响健康和疾病.
  • HDL的远程信号传递和细胞相互作用的机制尚未完全理解.
  • 高质量胆固醇的复杂性表明,多个受体在细胞表面上形成条件依赖的相互作用集群.

研究的目的:

  • 通过以发现为导向的方法来研究HDL受体相互作用.
  • 为了识别和表征参与HDL结合的细胞表面蛋白群体.
  • 了解这些社区在HDL功能和细胞吸收中的作用.

主要方法:

  • 利用了基于质谱和光控制的近距离标签策略LUX-MS.
  • 在肝细胞和内皮细胞上进行了表面纳米级组织分析.
  • 通过沉默单个蛋白质,研究了HDL突触成员的功能影响.

主要成果:

  • 鉴定出一种新的细胞表面蛋白质群体,称为与HDL结合相关的"HDL突触".
  • 证明了由60个蛋白质组成的内皮HDL突触可以独立于食尸体受体B1 (SR-B1) 组装.
  • 发现aminopeptidase N (AMPN/CD13) 是一个HDL突触成员,直接调解人类大动脉内皮细胞的HDL吸收.

结论:

  • 预先形成的细胞表面蛋白质复合体,或HDL突触,调节HDL功能.
  • 这些发现表明HDL相关疾病的新疗法 (治疗和诊断) 机会.