PMID- 31474862 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 10 DP - 2019 TI - microRNA Crosstalk Influences Epithelial-to-Mesenchymal, Endothelial-to-Mesenchymal, and Macrophage-to-Mesenchymal Transitions in the Kidney. PG - 904 LID - 10.3389/fphar.2019.00904 [doi] LID - 904 AB - microRNAs (miRNAs) are small, non-coding nucleotides that regulate diverse biological processes. Altered microRNA biosynthesis or regulation contributes to pathological processes including kidney fibrosis. Kidney fibrosis is characterized by deposition of excess extracellular matrix (ECM), which is caused by infiltration of immune cells, inflammatory cells, altered chemokines, and cytokines as well as activation and accumulation of fibroblasts in the kidney. These activated fibroblasts can arise from epithelial cells via epithelial-to-mesenchymal transition (EMT), from bone marrow-derived M2 phenotype macrophages via macrophage-to-mesenchymal transition (MMT), from endothelial cells via endothelial-to-mesenchymal transition (EndMT), from resident fibroblasts, and from bone marrow-derived monocytes and play a crucial role in fibrotic events. Disrupted microRNA biosynthesis and aberrant regulation contribute to the activation of mesenchymal programs in the kidney. miR-29 regulates the interaction between dipeptidyl peptidase-4 (DPP-4) and integrin beta1 and the associated active transforming growth factor beta (TGFbeta) and pro-EndMT signaling; however, miR-let-7 targets transforming growth factor beta receptors (TGFbetaRs) to inhibit TGFbeta signaling. N-acetyl-seryl-aspartyl-lysyl-proline (AcSDKP) is an endogenous anti-fibrotic peptide, which is associated with fibroblast growth factor receptor 1 (FGFR1) phosphorylation and subsequently responsible for the production of miR-let-7. miR-29 and miR-let-7 family clusters participate in crosstalk mechanisms, which are crucial for endothelial cell homeostasis. The physiological level of AcSDKP is vital for the activation of anti-fibrotic mechanisms including restoration of anti-fibrotic microRNA crosstalk and suppression of profibrotic signaling by mitigating DPP-4-associated mesenchymal activation in the epithelial cells, endothelial cells, and M2 phenotype macrophages. The present review highlights recent advancements in the understanding of both the role of microRNAs in the development of kidney disease and their potential as novel therapeutic targets for fibrotic disease states. FAU - Srivastava, Swayam Prakash AU - Srivastava SP AD - Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States. FAU - Hedayat, Ahmad Fahim AU - Hedayat AF AD - Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States. FAU - Kanasaki, Keizo AU - Kanasaki K AD - Internal Medicine 1, Shimane University Faculty of Medicine, Izumo, Japan. FAU - Goodwin, Julie E AU - Goodwin JE AD - Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States. LA - eng GR - R01 HL131952/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Review DEP - 20190816 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 EIN - Front Pharmacol. 2020 Jan 10;11:11. PMID: 31998136 PMC - PMC6707424 OTO - NOTNLM OT - diabetic kidney disease OT - endothelial-to-mesenchymal transition OT - epithelial-to-mesenchymal transition OT - kidney fibrosis OT - macrophage-to-mesenchymal transition OT - microRNA crosstalk OT - microRNAs EDAT- 2019/09/03 06:00 MHDA- 2019/09/03 06:01 PMCR- 2019/08/16 CRDT- 2019/09/03 06:00 PHST- 2019/01/25 00:00 [received] PHST- 2019/07/18 00:00 [accepted] PHST- 2019/09/03 06:00 [entrez] PHST- 2019/09/03 06:00 [pubmed] PHST- 2019/09/03 06:01 [medline] PHST- 2019/08/16 00:00 [pmc-release] AID - 10.3389/fphar.2019.00904 [doi] PST - epublish SO - Front Pharmacol. 2019 Aug 16;10:904. doi: 10.3389/fphar.2019.00904. eCollection 2019.