Changes in liver microRNA expression and their possible regulatory role in energy metabolism-related genes in hibernating black bears.
Hibernation
Liver
Metabolism
Non-coding RNA
Ursus
microRNA
Journal
Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology
ISSN: 1432-136X
Titre abrégé: J Comp Physiol B
Pays: Germany
ID NLM: 8413200
Informations de publication
Date de publication:
03 2021
03 2021
Historique:
received:
26
06
2020
accepted:
30
12
2020
revised:
22
12
2020
pubmed:
19
1
2021
medline:
29
10
2021
entrez:
18
1
2021
Statut:
ppublish
Résumé
Hibernating bears survive up to 6 months without feeding while yet maintaining metabolic homeostasis. We previously reported expression changes in energy metabolism-related genes in the liver of hibernating Japanese black bears. The present study examined the role of microRNAs in the regulation of hepatic gene expression during hibernation. The quantitative analyses revealed significant increases in the expression of 4 microRNAs (miR-221-3p, miR-222-3p, miR-455-3p, and miR-195a-5p) and decreases of 2 microRNAs (miR-122-5p and miR-7a-1-5p) during hibernation. RNA sequencing and in silico target prediction regarding 3 upregulated microRNAs (miR-221-3p, miR-222-3p and miR-455-3p) found 13 target mRNAs with significantly decreased expression during hibernation. The transfection of microRNA mimics into cells showed that miR-222 and miR-455 reduced solute carrier family 16 member 4 (SLC16A4) and fatty acid synthase (FASN) mRNA expression, respectively. Our results suggest that the increased levels of hepatic miRNA during hibernation (miR-222-3p and miR-455-3p) negatively regulate the expression of targeted genes predicted to be involved in the transport of energy source and de novo fatty acid synthesis, is consistent with a regulatory role of these miRNAs in energy metabolism in hibernating black bears.
Identifiants
pubmed: 33459845
doi: 10.1007/s00360-020-01337-7
pii: 10.1007/s00360-020-01337-7
doi:
Substances chimiques
MicroRNAs
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
397-409Références
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