Preliminary exploration of endoplasmic reticulum stress transmission in astrocytes and neurons, and its mediators

Ling,Yating; Hayat,Muhammad Abid; Lv,Xiaorui; Niu,Dongdong; Zeng,Yu; Qiu,Yun; Chen,Bo; Hu,Jiabo

doi:10.3892/mmr.2025.13532

Preliminary exploration of endoplasmic reticulum stress transmission in astrocytes and neurons, and its mediators

Authors:
- Yating Ling
- Muhammad Abid Hayat
- Xiaorui Lv
- Dongdong Niu
- Yu Zeng
- Yun Qiu
- Bo Chen
- Jiabo Hu
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Affiliations: Institute of Cerebrovascular Disease, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, Jiangsu 212002, P.R. China, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China, Institute of Cerebrovascular Disease, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, Jiangsu 212002, P.R. China
Published online on: April 11, 2025 https://doi.org/10.3892/mmr.2025.13532
Article Number: 167
Copyright: © Ling et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Unfolded protein response (UPR) signaling in cells stimulates UPR signaling in adjacent cells, facilitating the progression of disease (such as diabetes)by upregulating UPR target genes; however, whether this dissemination occurs between nerve cells, and its molecular basis, is currently unclear. In the present study, the supernatant of endoplasmic reticulum (ER) stress‑induced rat astrocytes was prepared and used to treat rat adrenal pheochromocytoma cell to simulate the propagation of ER stress between nerve cells. Reverse transcription‑quantitative PCR and western blotting were performed to detect the expression levels of mRNAs and protein levels associated with ER stress in cells. The results revealed that ER stress may propagate between rat nerve cells, ultimately leading to apoptosis. Analysis also revealed that the mediators of ER stress transmission were non‑vesicular, oxidative molecules with molecular weights >100 kDa. In conclusion, ER stress propagation may have a role in neuronal death following ER stress in central nervous system diseases, presenting potential novel therapeutic targets for these conditions.

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