PMID- 34615899 OWN - NLM STAT- MEDLINE DCOM- 20211228 LR - 20211228 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 11 IP - 1 DP - 2021 Oct 6 TI - Transcriptomic profiling and functional prediction reveal aberrant expression of circular RNAs during osteogenic differentiation in human umbilical cord mesenchymal stromal cells. PG - 19881 LID - 10.1038/s41598-021-98470-2 [doi] LID - 19881 AB - Circular RNAs (circRNAs) are crucial elements of non-coding RNA, that regulate various biological processes. To date, expression patterns and functional roles of circRNAs during osteogenic differentiation of human umbilical cord mesenchymal stromal cells (hUCMSCs) remain unknown. In this study, we analyzed RNA-sequence data to reveal expression profiles of circRNAs during osteogenesis of hUCMSCs, then elucidated the underlying mechanisms of action. We identified a total of 5457 circRNAs in hUCMSCs, of which 34 and 33 were upregulated and downregulated, respectively. We applied Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses to determine functions and related pathways of differentially expressed circRNAs. Moreover, we applied bioinformatics tools to construct competing endogenous RNA networks, comprising 10 circRNAs, 46 micro RNAs and 413 mRNAs. Furthermore, we predicted protein-coding potential of the upregulated circRNAs then constructed a co-expression network comprising the top 5 upregulated circRNAs and 75 RNA-binding proteins. Next, we validated 6 differentially-expressed circRNAs and found that overexpressing circ-CTTN could promote osteogenesis of hUCMSCs. Overall, our findings indicate that clusters of circRNAs are aberrantly expressed in hUCMSCs during osteogenic differentiation, hence lay a foundation for future research into promoting hUCMSCs osteogenic differentiation and bone regeneration. CI - (c) 2021. The Author(s). FAU - Su, Cheng AU - Su C AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Department of Oral Prosthodontics, Sichuan University, Sichuan, 610041, China. FAU - Zheng, Xiao AU - Zheng X AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Department of Oral Prosthodontics, Sichuan University, Sichuan, 610041, China. FAU - He, Yanjin AU - He Y AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Department of Oral Prosthodontics, Sichuan University, Sichuan, 610041, China. FAU - Long, Li AU - Long L AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Department of Oral Prosthodontics, Sichuan University, Sichuan, 610041, China. FAU - Chen, Wenchuan AU - Chen W AD - State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Department of Oral Prosthodontics, Sichuan University, Sichuan, 610041, China. hxkqcwc@scu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211006 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (MicroRNAs) RN - 0 (RNA, Circular) RN - 0 (RNA, Messenger) SB - IM MH - Cell Differentiation/*genetics MH - Cells, Cultured MH - Computational Biology/methods MH - *Gene Expression Profiling MH - Gene Expression Regulation MH - Gene Ontology MH - Gene Regulatory Networks MH - High-Throughput Nucleotide Sequencing MH - Humans MH - Mesenchymal Stem Cells/cytology/*metabolism MH - MicroRNAs/genetics MH - Osteogenesis/*genetics MH - RNA, Circular/*genetics MH - RNA, Messenger/genetics MH - *Transcriptome MH - Umbilical Cord/*cytology PMC - PMC8494929 COIS- The authors declare no competing interests. EDAT- 2021/10/08 06:00 MHDA- 2021/12/29 06:00 PMCR- 2021/10/06 CRDT- 2021/10/07 06:17 PHST- 2021/04/07 00:00 [received] PHST- 2021/09/06 00:00 [accepted] PHST- 2021/10/07 06:17 [entrez] PHST- 2021/10/08 06:00 [pubmed] PHST- 2021/12/29 06:00 [medline] PHST- 2021/10/06 00:00 [pmc-release] AID - 10.1038/s41598-021-98470-2 [pii] AID - 98470 [pii] AID - 10.1038/s41598-021-98470-2 [doi] PST - epublish SO - Sci Rep. 2021 Oct 6;11(1):19881. doi: 10.1038/s41598-021-98470-2.