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Astrocyte-Like Cells Transcriptome Changes After Exposure to a Low and Non-cytotoxic MeHg Concentration.

Authors :
Puty, Bruna
Bittencourt, Leonardo Oliveira
Plaça, Jéssica Rodrigues
de Oliveira, Edivaldo Herculano Corrêa
Lima, Rafael Rodrigues
Source :
Biological Trace Element Research; Mar2023, Vol. 201 Issue 3, p1151-1162, 12p
Publication Year :
2023

Abstract

The central nervous system is the main target of MeHg toxicity and glial cells are the first line of defense; however, their true role remains unclear. This study aimed to identify the global map of human glial-like (U87) cells transcriptome after exposure to a non-toxic and non-lethal MeHg concentration and to investigate the related molecular changes. U87 cells were exposed upon 0.1, 0.5, and 1 µM MeHg for 4 and 24 h. Although no changes were observed in the percentage of viable cells, the metabolic viability was significantly decreased after exposure to 1 µM MeHg for 24 h; thus, the non-toxic concentration of 0.1 µM MeHg was chosen to perform microarray analysis. Significant changes in U87 cells transcriptome were observed only after 24 h. The expression of 392 genes was down regulated while 431 genes were up-regulated. Gene ontology showed alterations in biological processes (75%), cellular components (21%), and molecular functions (4%). The main pathways showed by KEGG and Reactome were cell cycle regulation and Rho GTPase signaling. The complex mechanism of U87 cells response against MeHg exposure indicates that even a low and non-toxic concentration is able to alter the gene expression profile. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01634984
Volume :
201
Issue :
3
Database :
Complementary Index
Journal :
Biological Trace Element Research
Publication Type :
Academic Journal
Accession number :
161692447
Full Text :
https://doi.org/10.1007/s12011-022-03225-3