PMID- 34281266 OWN - NLM STAT- MEDLINE DCOM- 20210726 LR - 20210726 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 13 DP - 2021 Jul 5 TI - Roles of MicroRNAs in Osteogenesis or Adipogenesis Differentiation of Bone Marrow Stromal Progenitor Cells. LID - 10.3390/ijms22137210 [doi] LID - 7210 AB - Bone marrow stromal cells (BMSCs) are multipotent cells which can differentiate into chondrocytes, osteoblasts, and fat cells. Under pathological stress, reduced bone formation in favour of fat formation in the bone marrow has been observed through a switch in the differentiation of BMSCs. The bone/fat switch causes bone growth defects and disordered bone metabolism in bone marrow, for which the mechanisms remain unclear, and treatments are lacking. Studies suggest that small non-coding RNAs (microRNAs) could participate in regulating BMSC differentiation by disrupting the post-transcription of target genes, leading to bone/fat formation changes. This review presents an emerging concept of microRNA regulation in the bone/fat formation switch in bone marrow, the evidence for which is assembled mainly from in vivo and in vitro human or animal models. Characterization of changes to microRNAs reveals novel networks that mediate signalling and factors in regulating bone/fat switch and homeostasis. Recent advances in our understanding of microRNAs in their control in BMSC differentiation have provided valuable insights into underlying mechanisms and may have significant potential in development of new therapeutics. FAU - Zhang, Ya-Li AU - Zhang YL AUID- ORCID: 0000-0003-0107-4274 AD - UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia. FAU - Liu, Liang AU - Liu L AUID- ORCID: 0000-0002-6272-2565 AD - UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia. FAU - Peymanfar, Yaser AU - Peymanfar Y AUID- ORCID: 0000-0002-5793-0474 AD - UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia. FAU - Anderson, Paul AU - Anderson P AD - UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia. FAU - Xian, Cory J AU - Xian CJ AUID- ORCID: 0000-0002-8467-2845 AD - UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia. LA - eng GR - 1127396/National Health and Medical Research Council/ PT - Journal Article PT - Review DEP - 20210705 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Bone Morphogenetic Proteins) RN - 0 (Genetic Markers) RN - 0 (MicroRNAs) RN - 0 (Smad Proteins) RN - 0 (Transforming Growth Factor beta) SB - IM MH - Adipogenesis/*genetics/*physiology MH - Animals MH - Bone Morphogenetic Proteins/genetics/metabolism MH - Calcium Signaling/genetics MH - Cell Differentiation/genetics/physiology MH - Genetic Markers MH - Humans MH - Mesenchymal Stem Cells/*cytology/*metabolism MH - MicroRNAs/genetics/metabolism MH - Models, Biological MH - Osteogenesis/*genetics/*physiology MH - Signal Transduction/genetics MH - Smad Proteins/genetics/metabolism MH - Transforming Growth Factor beta/genetics/metabolism MH - Wnt Signaling Pathway/genetics PMC - PMC8269269 OTO - NOTNLM OT - BMSC differentiation OT - bone/fat formation OT - microRNAs COIS- The Authors declare that they have no conflict of interest. EDAT- 2021/07/21 06:00 MHDA- 2021/07/27 06:00 PMCR- 2021/07/05 CRDT- 2021/07/20 01:03 PHST- 2021/06/21 00:00 [received] PHST- 2021/07/02 00:00 [revised] PHST- 2021/07/03 00:00 [accepted] PHST- 2021/07/20 01:03 [entrez] PHST- 2021/07/21 06:00 [pubmed] PHST- 2021/07/27 06:00 [medline] PHST- 2021/07/05 00:00 [pmc-release] AID - ijms22137210 [pii] AID - ijms-22-07210 [pii] AID - 10.3390/ijms22137210 [doi] PST - epublish SO - Int J Mol Sci. 2021 Jul 5;22(13):7210. doi: 10.3390/ijms22137210.