category
bioRxiv
date
Mar 2, 2026
slug
status
Published
summary
首次在C. elegans中发现SAS-1与SSNA-1形成的动态中心粒卫星具有脊椎动物类似特征,揭示其依赖微管骨架、呈现剂量依赖性及生物分子冷凝物特性,并证明其进化保守性。
tags
蛋白质组学
蛋白质进化
type
Post

📄 原文题目

SAS-1 and SSNA-1 form dynamic centriolar satellites in C. elegans

🔗 原文链接

💡 AI 核心解读

首次在C. elegans中发现SAS-1与SSNA-1形成的动态中心粒卫星具有脊椎动物类似特征,揭示其依赖微管骨架、呈现剂量依赖性及生物分子冷凝物特性,并证明其进化保守性。

📝 英文原版摘要

Centriolar satellites are dynamic pericentrosomal structures implicated in centrosomal protein homeostasis and ciliogenesis. Centriolar satellites have been identified in vertebrates and were only recently described in flies. In C. elegans similar pericentriolar structures were reported for the Sjogrens Syndrome Nuclear Antigen 1 (SSNA-1). However, whether these foci have characteristics resembling centriolar satellites of vertebrates, has not been explored. We show that Spindle Assembly-1 (SAS-1), the interaction partner of SSNA-1 forms similar satellite-like structures that localize to a pericentrosomal space in a cell cycle-dependent manner. SAS-1 satellite-like structures associate with and are dependent on the microtubule cytoskeleton. Furthermore, we demonstrate that they form in a dose dependent manner, are dynamic and sensitive to agents disrupting weak hydrophobic interactions, characteristics of biomolecular condensates. We conclude that C. elegans has bona fide centriolar satellites highlighting their evolutionary conservation and importance across species, and at the same time opening new avenues for future mechanistic studies.
FAβ-gal:一种基于荧光的衰老相关β-半乳糖苷酶X-gal测定自动化定量方法二甲双胍通过AMPK-SIRT1-PGC-1α轴恢复血管平滑肌细胞线粒体稳态稳定腹主动脉瘤
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