数据日期 2026-10-29 · 生成时间 2026-10-29 06:03
研究问题
The endoplasmic reticulum (ER) stress response is a compartmentalized form of the cellular stress response that usually involves the sensing of unfolded/misfolded proteins in the ER lumen, followed by the processing and transmission of this information to the nucleus and other cellular compartments [1,2].
方法
Cell Cultures and Senescence Induct] The Jurkat cell line was obtained from the Russian Cell Culture Collection (Institute of Cytology, Russian Academy of Sciences, Saint Petersburg, Russia) and maintained in RPMI-1640 medium (Life Technologies, Grand Island, NY, USA) supplemented with 10% (v/v) fetal bovine serum (FBS; Life Technologies, Grand Island, NY, USA) and 50 µg/mL gentamicin (Life Technologies).；Edgell (University of North Carolina, Chapel Hill, NC, USA) and cultured in Dulbecco’s Modified Eagle’s Medium (DMEM; Life Technologies) supplemented with 10% (v/v) FBS, 1% non-essential amino acids (Paneko, Moscow, Russia), 2 mM glutamine (Paneko), HAT supplement (Life Technologies), and 50 µg/mL gentamicin.；Experimental Treatments] To induce ER stress, cells were treated with various concentrations of dithiothreitol (DTT; Sigma-Aldrich, St.；Cells were pre-incubated with the inhibitor STF 083010 at a final concentration of 60 µM before ER stress induction.
核心结论
When comparing the expression levels of individual key genes, we observed 6-fold higher expression of SEC61A1, a core translocon component; a 56-fold increase in CKAP4 (CLIMP-63), which anchors the ER to microtubules; and an 11-fold elevation in HSPA5 (BiP), the primary ER chaperone.；Specifically, we noted divergent expression of reticulons, which stabilize ER membrane curvature: RTN2 expression was upregulated 39-fold, which may reflect active secretory traffic, while RTN4 showed a 2.4-fold increase, suggesting a moderate expansion of the tubular ER in EA.hy926 cells.；In EA.hy926 cells, ATF6 expression was 1.6-fold higher, concurrently with its target genes SEL1L (an ERAD-associated protein component) and HERPUD1, which showed 1.3-fold and 2-fold increases, respectively. ‖ 结论：We demonstrate that UPR dynamics are significantly modulated by cellular geometry.
局限
Nevertheless, the temporal dynamics of ER stress induced by alternative agents may exhibit unique cell type-specific features, which warrant further investigation.
对本项目的价值
★★☆☆☆ 细胞衰老清除/重编程是项目干预管线的核心支柱之一。设计 多组学、定性研究。
全文来源
PMC JATS 全文（正文 54,005 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Dynamics of Endoplasmic Reticulum Stress Responses in Cells with Different Endoplasmic Reticulum Volumes and Senescence States.
- 期刊与标识：Curr Issues Mol Biol · PMID 42939565 · DOI 10.3390/cimb48101027**
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。
关于本文的文献来源：本站依据 IMA 知识库「五刊监控·深度文献卡片」撰写，依据已获取的期刊全文（方法、样本量与结论已回到原文核对）；未能获取全文的同批条目另行标注「摘要级」，全程未做任何数值推算补全。