V2EX p27

P27

Definition / 释义

p27(常指 p27^Kip1,基因名 CDKN1B)是一种细胞周期抑制蛋白,主要通过抑制细胞周期蛋白依赖性激酶(CDK),帮助细胞“踩刹车”,从而调控细胞从 G1 期进入 S 期的进程。在肿瘤生物学中常被讨论为与细胞增殖、肿瘤发生相关的重要分子。(在不同语境中也可能仅作编号/型号,但最常见的是生物医学含义。)

Pronunciation / 发音

/pi twenti svn/

Examples / 例句

p27 helps prevent cells from dividing too quickly.
p27 有助于防止细胞分裂得过快。

Low p27 expression is associated with increased tumor cell proliferation and poorer prognosis in some cancers.
在一些癌症中,p27 低表达与肿瘤细胞增殖增强及较差的预后相关。

Etymology / 词源

p27中的 p 常用来表示“protein(蛋白质)”,27通常来源于该蛋白最初鉴定时的分子量约 27 kDa(或实验中对应的编号习惯)。别名 Kip1 来自 “Kinase inhibitory protein(激酶抑制白)” 的缩写传统,用于强调其抑制 CDK 的功能。

Related Words / 相关词

Literary Works / 文学与著作例证

  • Molecular Biology of the Cell(Alberts 等):在细胞周期调控章节中讨论 CDK 抑制蛋白(包括 p27)的作用机制。
  • The Cell: A Molecular Approach(Cooper & Hausman):介绍细胞周期检查点与 CDK 抑制因子,常以 p27 作为典型例子。
  • CellNatureScience 等期刊的细胞周期/肿瘤生物学论文与综述:频繁出现 p27(CDKN1B)在增殖控制与癌症相关通路中的研究引用。
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