PMID- 37619316 OWN - NLM STAT- MEDLINE DCOM- 20230918 LR - 20230921 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 678 DP - 2023 Oct 20 TI - Matrix stiffness-mediated tenogenesis of tendon stem/progenitor cells via integrin-alpham for tendon regeneration. PG - 90-96 LID - S0006-291X(23)00937-3 [pii] LID - 10.1016/j.bbrc.2023.08.007 [doi] AB - Tendon injuries, commonly associated with sports activities, pose significant challenges in terms of treatment and recovery due to limited tendon regeneration and the formation of proliferative scars. Stem cell-based therapy has shown promising application, but there are still challenges. Physical and biological cues are instrumental in guiding stem cell differentiation and maturation. This study focuses on exploring the effects of matrix biomechanics on tendon stem/progenitor cells (TSPCs) differentiation. We fabricated polydimethylsiloxane (PDMS) substrates with different elastic modulus to mimic the mechanical characteristics of healthy tendons. A tissue-engineered culture system was developed for tenogenesis, and pre-differentiated tissue-engineered tendons were transplanted in vivo to assess their efficacy in regenerating patella tendon injuries. Furthermore, we demonstrated that the biomechanical stimuli activated the integrin-alpham to enhance the tenogenesis capacity of TSPCs. Our findings highlight the importance of biomechanics in tendon tissue engineering and provide a novel perspective for enhancing tendon regeneration. CI - Copyright (c) 2023. Published by Elsevier Inc. FAU - Zhang, Yuxiang AU - Zhang Y AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China; Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang Province, PR China. FAU - Zhang, Erchen AU - Zhang E AD - The Institute of Reproduction and Stem Cell Engineering, Central South University, Hunan Province, PR China. FAU - Qin, Tian AU - Qin T AD - Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China. FAU - Liu, Mengyun AU - Liu M AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China. FAU - Zhou, Sicheng AU - Zhou S AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China. FAU - Lin, Ruifu AU - Lin R AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China. FAU - Shen, Weiliang AU - Shen W AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China. Electronic address: wlshen@zju.edu.cn. FAU - Chen, Xiao AU - Chen X AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, PR China. Electronic address: chenxiao-610@zju.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230817 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (CD11b Antigen) SB - IM MH - Humans MH - CD11b Antigen MH - *Tendons MH - *Tendon Injuries/therapy MH - Biomechanical Phenomena MH - Stem Cells OTO - NOTNLM OT - Stiffness OT - Tendon regeneration OT - Tendon stem/progenitor cells (TSPCs) OT - Tissue engineering COIS- Declaration of competing interest The authors declare that there are no conflicts of interests that may have impacted the research presented in this manuscript. EDAT- 2023/08/25 00:42 MHDA- 2023/09/18 12:44 CRDT- 2023/08/24 18:01 PHST- 2023/07/14 00:00 [received] PHST- 2023/07/25 00:00 [revised] PHST- 2023/08/02 00:00 [accepted] PHST- 2023/09/18 12:44 [medline] PHST- 2023/08/25 00:42 [pubmed] PHST- 2023/08/24 18:01 [entrez] AID - S0006-291X(23)00937-3 [pii] AID - 10.1016/j.bbrc.2023.08.007 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2023 Oct 20;678:90-96. doi: 10.1016/j.bbrc.2023.08.007. Epub 2023 Aug 17.