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- Title
Forskolin‐mediated BeWo cell fusion involves down‐regulation of miR‐92a‐1‐5p that targets dysferlin and protein kinase cAMP‐activated catalytic subunit alpha.
- Authors
Dubey, Richa; Malhotra, Sudha S.; Gupta, Satish K.
- Abstract
Problem: To study the role of miRNA(s) during trophoblastic BeWo cell fusion. Method of study: Changes in miRNA(s) profile of BeWo cells treated with forskolin were analyzed using Affymetrix miRNA microarray platform. Down‐regulated miRNA, miR‐92a‐1‐5p, was overexpressed in BeWo cells followed by forskolin treatment to understand its relevance in the process of BeWo cell fusion by desmoplakin I+II staining and hCG secretion by ELISA. Predicted targets of miR‐92a‐1‐5p were also confirmed by qRT‐PCR/Western blotting. Results: The miRNA profiling of BeWo cells after forskolin (25 μmol/L) treatment identified miR‐92a‐1‐5p as the most significantly down‐regulated miRNA both at 24 and 48 hours time points. Overexpression of miR‐92a‐1‐5p in these cells led to a significant decrease in forskolin‐mediated cell fusion and hCG secretion. miRNA target prediction software, TargetScan, revealed dysferlin (<italic>DYSF</italic>) and protein kinase cAMP‐activated catalytic subunit alpha (<italic>PRKACA</italic>), as target genes of miR‐92a‐1‐5p. Overexpression of miR‐92a‐1‐5p in BeWo cells showed reduction in forskolin‐induced transcripts for <italic>DYSF and PRKACA</italic>. Further, reduction in DYSF (~2.6‐fold) at protein level and <italic>PRKACA</italic>‐encoded protein kinase A catalytic subunit alpha (PKAC‐α; ~1.6‐fold) were also observed. Conclusion: These observations suggest that miR‐92a‐1‐5p regulates forskolin‐mediated BeWo cell fusion and hCG secretion by regulating PKA signaling pathway and dysferlin expression.
- Subjects
MICRORNA; PROTEIN kinases; FORSKOLIN; CELL fusion; IMMUNE response
- Publication
American Journal of Reproductive Immunology, 2018, Vol 79, Issue 6, p1
- ISSN
1046-7408
- Publication type
Article
- DOI
10.1111/aji.12834