PMID- 22976296 OWN - NLM STAT- MEDLINE DCOM- 20130828 LR - 20211203 IS - 1477-9137 (Electronic) IS - 0021-9533 (Linking) VI - 125 IP - Pt 23 DP - 2012 Dec 1 TI - CCN2/CTGF increases expression of miR-302 microRNAs, which target the TGFbeta type II receptor with implications for nephropathic cell phenotypes. PG - 5621-9 LID - 10.1242/jcs.105528 [doi] AB - Signalling interplay between transforming growth factor-beta (TGFbeta) and CCN2 [also called connective tissue growth factor (CTGF)] plays a crucial role in the progression of diabetic nephropathy and has been implicated in cellular differentiation. To investigate the potential role of microRNAs (miRNAs) in the mediation of this signalling network, we performed miRNA screening in mesangial cells treated with recombinant human CCN2. Analysis revealed a cohort of 22 miRNAs differentially expressed by twofold or more, including members of the miR-302 family. Target analysis of miRNA to 3'-untranslated regions (3'-UTRs) identified TGFbeta receptor II (TbetaRII) as a potential miR-302 target. In mesangial cells, decreased TbetaRII expression was confirmed in response to CCN2 together with increased expression of miR-302d. TbetaRII was confirmed as an miR-302 target, and inhibition of miR-302d was sufficient to attenuate the effect of CCN2 on TbetaRII. Data from the European Renal cDNA Biopsy Bank revealed decreased TbetaRII in diabetic patients, suggesting pathophysiological significance. In a mouse model of fibrosis (UUO), miR-302d was increased, with decreased TbetaRII expression and aberrant signalling, suggesting relevance in chronic fibrosis. miR-302d decreased TGFbeta-induced epithelial mesenchymal transition (EMT) in renal HKC8 epithelial cells and attenuated TGFbeta-induced mesangial production of fibronectin and thrombospondin. In summary, we demonstrate a new mode of regulation of TGFbeta by CCN2, and conclude that the miR-302 family has a role in regulating growth factor signalling pathways, with implications for nephropathic cell fate transitions. FAU - Faherty, Noel AU - Faherty N AD - UCD Diabetes Research Centre, UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland. FAU - Curran, Simon P AU - Curran SP FAU - O'Donovan, Helen AU - O'Donovan H FAU - Martin, Finian AU - Martin F FAU - Godson, Catherine AU - Godson C FAU - Brazil, Derek P AU - Brazil DP FAU - Crean, John K AU - Crean JK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120912 PL - England TA - J Cell Sci JT - Journal of cell science JID - 0052457 RN - 0 (MicroRNAs) RN - 0 (Receptors, Transforming Growth Factor beta) RN - 0 (Transforming Growth Factor beta) RN - 139568-91-5 (Connective Tissue Growth Factor) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.30 (Receptor, Transforming Growth Factor-beta Type II) SB - IM MH - Animals MH - Blotting, Western MH - Cells, Cultured MH - Connective Tissue Growth Factor/*pharmacology MH - Enzyme-Linked Immunosorbent Assay MH - Fluorescent Antibody Technique MH - Humans MH - Male MH - Mesangial Cells/drug effects/metabolism MH - Mice MH - Mice, Inbred C57BL MH - MicroRNAs/*genetics MH - Protein Serine-Threonine Kinases/*metabolism MH - Receptor, Transforming Growth Factor-beta Type II MH - Receptors, Transforming Growth Factor beta/*metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Transforming Growth Factor beta/metabolism EDAT- 2012/09/15 06:00 MHDA- 2013/08/29 06:00 CRDT- 2012/09/15 06:00 PHST- 2012/09/15 06:00 [entrez] PHST- 2012/09/15 06:00 [pubmed] PHST- 2013/08/29 06:00 [medline] AID - jcs.105528 [pii] AID - 10.1242/jcs.105528 [doi] PST - ppublish SO - J Cell Sci. 2012 Dec 1;125(Pt 23):5621-9. doi: 10.1242/jcs.105528. Epub 2012 Sep 12.