MicroRNA218 promotes prostaglandin E2 to inhibit osteogenic differentiation in synovial mesenchymal stem cells by targeting 15hydroxyprostaglandin dehydrogenase [NAD(+)].
Mol Med Rep
; 16(6): 9347-9354, 2017 Dec.
Article
en En
| MEDLINE
| ID: mdl-29039590
The chondrogenic differentiation of synovial mesenchymal stem cells (SMSCs) is regulated by essential transcription factors and signaling cascades. However, the precise mechanisms involved in this process remain unclear. MicroRNAs (miRs/miRNAs) are undersized noncoding RNAs responsible for the posttranscriptional regulation of gene expression, by binding to the 3'untranslated regions (3'UTRs) of their target mRNAs. miRNAs may constitute a promising tool to regulate SMSC differentiation and to advance the controlled differentiation of SMSCs in therapeutic applications. The aim of the present study was to examine the role of miR218 in SMSC differentiation towards chondrocytes. The present study comparatively analyzed the expression profile of known miRNAs and specific target genes in SMSCs between early and late differentiation stages. Western blotting and reverse transcriptionquantitative polymerase chain reaction analysis of gene expression demonstrated the upregulation of 15hydroxyprostaglandin dehydrogenase [NAD(+)] (15HPGD), prostaglandin E2 (PGE2) and rate limiting enzymes responsible for the synthesis of PGE2 precursors throughout chondrogenesis. Through correlation analysis, it was observed that there was a significant association between miR128, 15HPGD gene expression, 15HPGD protein expression and microsomal prostaglandin E synthase 1. Further experiments demonstrated that miR218 decreased PGE2 concentration by binding to the 3'UTR of 15HPGD. Using an immunofluorescence reporting system, it was observed that miR218 regulated the expression of 15HPGD during the differentiation of SMSCs into cartilage, and subsequently inhibited osteogenesis during chondrogenesis by acting on the 3'UTR of 15HPGD. Therefore, miR218 may be an important regulator targeting osteogenic factors and modulating cartilage formation and differentiation. The results of the present study provided a novel insight beneficial to cellular manipulation methods during cartilage regeneration, and in cartilage tissue engineering research.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Osteogénesis
/
Membrana Sinovial
/
Dinoprostona
/
Hidroxiprostaglandina Deshidrogenasas
/
Diferenciación Celular
/
MicroARNs
/
Células Madre Mesenquimatosas
Límite:
Animals
Idioma:
En
Revista:
Mol Med Rep
Año:
2017
Tipo del documento:
Article
Pais de publicación:
Grecia