Related Experiment Video
Updated: Jun 26, 2026

Establishing a Mouse Model of a Pure Small Fiber Neuropathy with the Ultrapotent Agonist of Transient Receptor Potential Vanilloid Type 1
Published on: February 13, 2018
ATF4 Exacerbates Cerebral Infarction-Induced Sensory Dysfunction via HDAC1/DNMT1/GPX4 Signaling
Bingtuan Lu1, Ninghui Mu1, Pu Li2
1Department of General Practice, The First People's Hospital of Yunnan Province, 650032, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, 650032, China.
Abstract:
Cerebral infarction is the main cause of death and long-term disability worldwide. Neuronal degeneration and limp sensory dysfunction are the secondary damages induced by cerebral infarction. This study aimed to investigate the roles of activating transcription factor 4 (ATF4) in cerebral infarction and the underlying molecular mechanisms. Middle cerebral artery occlusion (MCAO) surgery was applied to establish a cerebral infarction model in vivo. Histological analysis was performed using Nissl assay. Gene expression was determined using immunohistochemistry, immunofluorescence, and Western blot. Gene interaction was confirmed by co-immunoprecipitation (Co-IP), chromatin immunoprecipitation (ChIP), and luciferase assays. Cellular functions were determined using Cell Counting Kit assay (CCK-8), propidium iodide (PI) staining, and terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling (TUNEL) assays. ATF4 was overexpressed in cerebral infarction models in vivo and in vitro. However, ATF4 knockdown decreased ischemic foci and volume and restored sensory functions in vivo. ATF4 knockdown suppressed lipid peroxidation and neuronal ferroptosis in vitro. Moreover, ATF4 activated DNA methyltransferase 1 (DNMT1), which induced glutathione peroxidase 4 (GPX4) DNA methylation and decreased its expression. GPX4 knockdown alleviated the effects of shATF4 and promoted neuronal ferroptosis. Overall, ATF4 knockdown protected against cerebral infarction and sensory dysfunction by promoting DNMT1-mediated DNA methylation of GPX4.
More Related Videos
08:27Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice
Published on: March 11, 2020
08:41Author Spotlight: Deciphering the Role of ATM in Ataxia-Telangiectasia and the Associated Cerebellar Degeneration
Published on: December 27, 2024
Related Concept Videos
DNA Damage can Stall the Cell Cycle
DNA Damage Can Stall the Cell Cycle
Alzheimer Disease l: Introduction
Alzheimer Disease ll: Pathophysiology
Huntington Disease l: Introduction
Hepatic Encephalopathy