PMID- 36472132 OWN - NLM STAT- MEDLINE DCOM- 20230301 LR - 20230301 IS - 2047-4849 (Electronic) IS - 2047-4830 (Linking) VI - 11 IP - 5 DP - 2023 Feb 28 TI - Engineered cell-overexpression of circular RNA hybrid hydrogels promotes healing of calvarial defects. PG - 1665-1676 LID - 10.1039/d2bm01472f [doi] AB - Craniomaxillofacial bone defects seriously affect the physical and mental health of patients. Bone marrow mesenchymal stem cells (BMSCs) are "gold standard" cells used for bone repair. However, the collection of BMSCs is invasive, and the osteogenic capacity is limited with age. Human umbilical cord mesenchymal stem cells (hUCMSCs) are promising alternative seed cells for bone tissue engineering. Our group previously used high-throughput sequencing technology and bioinformatics methods to detect circ-CTTN (hsa-circ_0003376) molecules, which may play an essential role in the osteogenic differentiation of hUCMSCs. In this study, osteogenic induction in vitro showed that the overexpressing circ-CTTN (OE group) exhibits a more pronounced osteogenic phenotype. The levels of osteogenesis-related genes in the OE group were highly expressed. The gelatin-methacrylate (GelMA) hydrogel possessed excellent biocompatibility and was used to load hUCMSCs. In the rat calvarial defect, the OE group presented a larger bone healing volume and denser bone trabecular distribution than other groups. So far, the overexpression of circ-CTTN could enhance the osteogenic differentiation of hUCMSCs and accelerate bone reconstruction. Our research could provide a new strategy and a strong theoretical basis for promoting hUCMSC clinical application in bone tissue engineering. FAU - Zhang, Min AU - Zhang M AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. AD - Department of Oral Prosthodontics & Jinjiang out-patient section, West China Hospital of Stomatology, Sichuan University, China. FAU - He, Yanjing AU - He Y AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. AD - Department of Oral Prosthodontics & Jinjiang out-patient section, West China Hospital of Stomatology, Sichuan University, China. FAU - Zhang, Xu AU - Zhang X AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. FAU - Gan, Shuaiqi AU - Gan S AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. AD - Department of Oral Prosthodontics & Jinjiang out-patient section, West China Hospital of Stomatology, Sichuan University, China. FAU - Xie, Xi AU - Xie X AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. FAU - Zheng, Zheng AU - Zheng Z AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. AD - Department of Oral Prosthodontics & Jinjiang out-patient section, West China Hospital of Stomatology, Sichuan University, China. FAU - Liao, Jinfeng AU - Liao J AUID- ORCID: 0000-0001-8101-4030 AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. FAU - Chen, Wenchuan AU - Chen W AD - State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, China. liaojinfeng.762@163.com. AD - Department of Oral Prosthodontics & Jinjiang out-patient section, West China Hospital of Stomatology, Sichuan University, China. LA - eng PT - Journal Article DEP - 20230228 PL - England TA - Biomater Sci JT - Biomaterials science JID - 101593571 RN - 0 (RNA, Circular) RN - 0 (Hydrogels) RN - 0 (Cttn protein, rat) RN - 0 (Cortactin) SB - IM MH - Humans MH - Rats MH - Animals MH - *Osteogenesis/genetics MH - *Bone Regeneration/genetics MH - RNA, Circular MH - Hydrogels MH - Bone and Bones MH - Cell Differentiation/genetics MH - Cortactin EDAT- 2022/12/07 06:00 MHDA- 2023/03/03 06:00 CRDT- 2022/12/06 03:52 PHST- 2022/12/07 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] PHST- 2022/12/06 03:52 [entrez] AID - 10.1039/d2bm01472f [doi] PST - epublish SO - Biomater Sci. 2023 Feb 28;11(5):1665-1676. doi: 10.1039/d2bm01472f.