V2EX claudin

Claudin

Definition 定义

Claudin闭合蛋白;一类位于细胞膜上的蛋白质家族,是紧密连接(tight junction)的关键组成成分,帮助相邻上皮/内皮细胞“封闭”细胞间隙,调控屏障功能与通透性。(不同成员常写作 claudin-1, claudin-2 等。)

Pronunciation 发音

/kldn/

Examples 例句

Claudin helps form tight junctions in epithelial cells.
闭合蛋白有助于在上皮细胞中形成紧密连接。

Reduced claudin-1 expression can increase tissue permeability and may be linked to tumor progression.
闭合蛋白-1表达降低可能会增加组织通透性,并可能与肿瘤进展有关。

Etymology 词源

Claudin 来自拉丁语词根 **claud-**(与 claudere “关闭、封闭”相关),命名强调它在紧密连接中“封闭细胞间隙”的功能;该蛋白家族在细胞连接研究中被系统提出并沿用此命名。

Related Words 相关词

In Literature & Notable Works 文学与著作中的用例

  • Molecular Biology of the Cell(Alberts 等,《细胞分子生物学》):在细胞连接与上皮屏障章节中讨论 claudin 作为紧密连接核心成分。
  • Junqueira’s Basic Histology(《Junqueira 基础组织学》):在上皮组织与细胞连接内容中提及 claudin 的结构与功能。
  • Tsukita 等关于紧密连接蛋白的经典研究论文(如 1990s 末至 2000s 初的系列工作):在阐明 claudin 家族与紧密连接屏障机制时频繁出现该词。
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