基础研究 情报发生 2026-10-31 · 发布于 2026-11-01

线虫肠道中 TBC-2 作为 Rab GAP:调控 TFEB 与 PQM-1 转录因子的核质定位

来源:MicroPubl Biol · PMID 42953546 · DOI 10.17912/micropub.biology.002470 · 来源:IMA 知识库《文献层·文献监控卡片》2026-10-31 期 · 全文级(file_id dmlmcfQeUyzO,实际下载核验) · 全文已获取并通过归属校验

时间标签:数据日期 2026-10-31 · 生成时间 2026-11-01 05:30(Asia/Shanghai)| 检索窗口 PubMed edat 2026/10/28–2026/10/31 | 情报发生日期 2026-10-31

研究问题

We found that regulates localization. is a GTPase Activating Protein (GAP) that regulates early to late endosome maturation (Chotard et al., 2010).;However, we don't know whether 14-3-3 mediates and binding to these endomembrane structures or if there are additional factors involved. and forms a complex and regulates overlapping stress response genes and lysosome morphology (Lin et al., 2018; Ricaurte-Perez et al., 2025).;Whether they form a complex on endomembranes remains unclear.

方法

To test if the reduced nuclear localization of affected downstream dependent gene expression, we analysed the mRNA expression of . is ATG8 in yeast and LC3 in mammals and is responsible for autophagosome formation (Melendez et al., 2003). expression is dependent on , such that mRNA levels are suppressed in (RNAi) (Lapierre et al., 2013) .

核心结论

Interestingly, positive endosomes are not present in every cell or every animal and can vary from just a few to hundreds.;We found that regulates localization. is a GTPase Activating Protein (GAP) that regulates early to late endosome maturation (Chotard et al., 2010).;Despite the endomembrane localization of , there was a significant increase in the number of animals with nuclear localized and an increase in the nuclear to cytosolic fluorescence intensity ratio of in (-) mutants as compared to wild type ( D). ‖ 结论:For quantitative RT-PCR, RNA was extracted from young adult using TRIZOL as explained in (Meras et al., 2022). was amplified using forward primer 5' – ACCCAGACCGTATTCCAGTG -3' and reverse primer 5' – ACGAAGTTGGATGCGTTTTC -3'.

局限

RNAi of did not affect the localization of to endomembranes suggesting that there may not be a codependence for endomembrane localization.

对本项目的价值

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全文来源

PMC JATS 全文(正文 8,752 字符,已过标题/DOI 逐字归属校验)

原文题录

  • 英文标题:TBC-2, a Rab GTPase activating protein, regulates the localization of the HLH-30/TFEB and PQM-1 transcription factors in the C. elegans intestine.
  • 期刊与标识:MicroPubl Biol · PMID 42953546 · DOI 10.17912/micropub.biology.002470

B 级证据分级:B 级(同行评议临床前研究,主要为动物模型)

本文核心结论来自动物模型或体外细胞学,属临床前证据,不能外推至人体。「延长健康寿命」「改善功能」等表述在小鼠中的意义,与人类临床结局之间仍有距离。

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