PMID- 36846309 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230228 IS - 2590-0064 (Electronic) IS - 2590-0064 (Linking) VI - 19 DP - 2023 Apr TI - Human urine-derived stem cell exosomes delivered via injectable GelMA templated hydrogel accelerate bone regeneration. PG - 100569 LID - 10.1016/j.mtbio.2023.100569 [doi] LID - 100569 AB - The key to critical bone regeneration in tissue engineering relies on an ideal bio-scaffold coated with a controlled release of growth factors. Gelatin methacrylate (GelMA) and Hyaluronic acid methacrylate (HAMA) have been a novel topic of interest in bone regeneration while introducing appropriate nano-hydroxyapatite (nHAP) to improve its mechanical properties. And the exosomes derived from human urine-derived stem cells (human (USC)EXOs) have also been reported to promote osteogenesis in tissue engineering. The present study aimed to design a new GelMA-HAMA/nHAP composite hydrogel as a drug delivery system. The (USC)EXOs were encapsulated and slow-released in the hydrogel for better osteogenesis. The characterization of the GelMA-based hydrogel showed excellent controlled release performance and appropriate mechanical properties. The in vitro studies showed that the (USC)EXOs/GelMA-HAMA/nHAP composite hydrogel could promote the osteogenesis of bone marrow mesenchymal stem cells (BMSCs) and the angiogenesis of endothelial progenitor cells (EPCs), respectively. Meanwhile, the in vivo results confirmed that this composite hydrogel could significantly promote the defect repair of cranial bone in the rat model. In addition, we also found that (USC)EXOs/GelMA-HAMA/nHAP composite hydrogel can promote the formation of H-type vessels in the bone regeneration area, enhancing the therapeutic effect. In conclusion, our findings suggested that this controllable and biocompatible (USC)EXOs/GelMA-HAMA/nHAP composite hydrogel may effectively promote bone regeneration by coupling osteogenesis and angiogenesis. CI - (c) 2023 The Authors. FAU - Lu, Wei AU - Lu W AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, China. FAU - Zeng, Min AU - Zeng M AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, China. FAU - Liu, Wenbin AU - Liu W AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, China. FAU - Ma, Tianliang AU - Ma T AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, China. FAU - Fan, Xiaolei AU - Fan X AD - Department of Orthopedics, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China. FAU - Li, Hui AU - Li H AD - Department of Orthopedics, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, China. FAU - Wang, Yinan AU - Wang Y AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, China. FAU - Wang, Haoyi AU - Wang H AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, China. FAU - Hu, Yihe AU - Hu Y AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Department of Orthopedics, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, China. FAU - Xie, Jie AU - Xie J AD - Department of Orthopedic Surgery, National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. AD - Department of Orthopedics, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, China. LA - eng PT - Journal Article DEP - 20230201 PL - England TA - Mater Today Bio JT - Materials today. Bio JID - 101757228 PMC - PMC9945756 OTO - NOTNLM OT - Bone regeneration OT - Exosomes OT - GelMA OT - H-type vessels OT - HAMA COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/02/28 06:00 MHDA- 2023/02/28 06:01 PMCR- 2023/02/01 CRDT- 2023/02/27 05:47 PHST- 2022/11/06 00:00 [received] PHST- 2023/01/15 00:00 [revised] PHST- 2023/01/29 00:00 [accepted] PHST- 2023/02/27 05:47 [entrez] PHST- 2023/02/28 06:00 [pubmed] PHST- 2023/02/28 06:01 [medline] PHST- 2023/02/01 00:00 [pmc-release] AID - S2590-0064(23)00029-7 [pii] AID - 100569 [pii] AID - 10.1016/j.mtbio.2023.100569 [doi] PST - epublish SO - Mater Today Bio. 2023 Feb 1;19:100569. doi: 10.1016/j.mtbio.2023.100569. eCollection 2023 Apr.