Embryonic Lethal Abnormal Vision Proteins and Adenine and Uridine-rich Element MRNAs After Global Cerebral Ischemia and Reperfusion in the Rat

Overview

Journal J Cereb Blood Flow Metab

Publisher Sage Publications

Specialties Cardiology & Vascular Diseases
Endocrinology
Neurology

Date 2016 Jul 7

PMID 27381823

Citations 3

Authors

Haihui Wang

Fika Tri Anggraini

Xuequn Chen

Donald J DeGracia

Affiliations

Soon will be listed here.

Abstract

Prolonged translation arrest correlates with delayed neuronal death of hippocampal CA1 neurons following global cerebral ischemia and reperfusion. Many previous studies investigated ribosome molecular biology, but mRNA regulatory mechanisms after brain ischemia have been less studied. Here we investigated the embryonic lethal abnormal vision/Hu isoforms HuR, HuB, HuC, and HuD, as well as expression of mRNAs containing adenine and rich uridine elements following global ischemia in rat brain. Proteomics of embryonic lethal abnormal vision immunoprecipitations or polysomes isolated from rat hippocampal CA1 and CA3 from controls or following 10 min ischemia plus 8 h of reperfusion showed distinct sets of mRNA-binding proteins, suggesting differential mRNA regulation in each condition. Notably, HuB, HuC, and HuD were undetectable in NIC CA1. At 8 h reperfusion, polysome-associated mRNAs contained 46.1% of ischemia-upregulated mRNAs containing adenine and rich uridine elements in CA3, but only 18.7% in CA1. Since mRNAs containing adenine and rich uridine elements regulation are important to several cellular stress responses, our results suggest CA1 is disadvantaged compared to CA3 in coping with ischemic stress, and this is expected to be an important contributing factor to CA1 selective vulnerability. (Data are available via ProteomeXchange identifier PXD004078 and GEO Series accession number GSE82146).

Citing Articles

The Use of Identified Hypoxia-related Genes to Generate Models for Predicting the Prognosis of Cerebral Ischemia‒reperfusion Injury and Developing Treatment Strategies.

Sun K, Li H, Dong Y, Cao L, Li D, Li J Mol Neurobiol. 2024; 62(3):3098-3124.

PMID: 39230867 PMC: 11790705. DOI: 10.1007/s12035-024-04433-9.

Deficiency of the RNA-binding protein ELAVL1/HuR leads to the failure of endogenous and exogenous neuroprotection of retinal ganglion cells.

Pacwa A, Machowicz J, Akhtar S, Rodak P, Liu X, Pietrucha-Dutczak M Front Cell Neurosci. 2023; 17:1131356.

PMID: 36874215 PMC: 9982123. DOI: 10.3389/fncel.2023.1131356.

Disease of mRNA Regulation: Relevance for Ischemic Brain Injury.

DeGracia D Transl Stroke Res. 2017; 9(3):251-257.

PMID: 29127592 DOI: 10.1007/s12975-017-0586-7.

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