Analysis of potential functional significance of microRNA36133p in human umbilical vein endothelial cells affected by heat stress.
Mol Med Rep
; 20(2): 1846-1856, 2019 Aug.
Article
in En
| MEDLINE
| ID: mdl-31257536
ABSTRACT
Dysregulation of microRNA36133p (miR36133p) was previously reported in endothelial cells (ECs) during heat stress. The aim of the present study was to investigate the precise role of miR36133p in heat stress. In the present study, potential gene targets of miR36133p in heattreated ECs were assessed, and the potential effects of miR36133p were determined using Gene Ontology enrichment analysis. Kyoto Encyclopedia of Genes and Genomes pathway analysis was used to identify signaling pathways that may be affected by miR36133p in heattreated cells. Reverse transcriptionquantitative PCR, western blotting and annexin VFITC/propidium iodide staining were performed to detect miRNA expression, protein expression and apoptosis, respectively. Luciferase gene reporter assay was performed to evaluate the association between miR36133p and mitogenactivated protein kinase kinase kinase 2 (MAP3K2). Bioinformatics analysis revealed 865 potential gene targets for miR36133p and a series of functions and pathways in heattreated ECs. 'Negative regulation of apoptotic process' was identified as a potential function of miR36133p. In addition, functional analysis confirmed the downregulated expression levels of miR36133p in ECs during heat stress, which was accompanied by an increase in apoptosis; restoration of miR36133p expression inhibited apoptosis. MAP3K2 protein was demonstrated to be upregulated in heattreated ECs, and overexpression of miR36133p reduced MAP3K2 expression levels. Additionally, MAP3K2 was targeted by miR36133p. These results indicated that miR36133p may have complicated roles in ECs under heat stress. miR36133p may serve an important role in the apoptosis of heattreated ECs, and this effect may be partly achieved by targeting MAP3K2.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Apoptosis
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Heat-Shock Response
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MicroRNAs
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MAP Kinase Kinase Kinase 2
Limits:
Humans
Language:
En
Journal:
Mol Med Rep
Year:
2019
Document type:
Article