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Li Z, Yang B, Yang Z, Xie X, Guo Z, Zhao J, Wang R, Fu H, Zhao P, Zhao X, Chen G, Li G, Wei F, Bian L. Supramolecular Hydrogel with Ultra-Rapid Cell-Mediated Network Adaptation for Enhancing Cellular Metabolic Energetics and Tissue Regeneration. Adv Mater 2024; 36:e2307176. [PMID: 38295393 DOI: 10.1002/adma.202307176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/27/2023] [Indexed: 02/02/2024]
Abstract
Cellular energetics plays an important role in tissue regeneration, and the enhanced metabolic activity of delivered stem cells can accelerate tissue repair and regeneration. However, conventional hydrogels with limited network cell adaptability restrict cell-cell interactions and cell metabolic activities. In this work, it is shown that a cell-adaptable hydrogel with high network dynamics enhances the glucose uptake and fatty acid β-oxidation of encapsulated human mesenchymal stem cells (hMSCs) compared with a hydrogel with low network dynamics. It is further shown that the hMSCs encapsulated in the high dynamic hydrogels exhibit increased tricarboxylic acid (TCA) cycle activity, oxidative phosphorylation (OXPHOS), and adenosine triphosphate (ATP) biosynthesis via an E-cadherin- and AMP-activated protein kinase (AMPK)-dependent mechanism. The in vivo evaluation further showed that the delivery of MSCs by the dynamic hydrogel enhanced in situ bone regeneration in an animal model. It is believed that the findings provide critical insights into the impact of stem cell-biomaterial interactions on cellular metabolic energetics and the underlying mechanisms.
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Affiliation(s)
- Zhuo Li
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Boguang Yang
- Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, 999077, P. R. China
| | - Zhengmeng Yang
- Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, 999077, P. R. China
| | - Xian Xie
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Zhengnan Guo
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
| | - Jianyang Zhao
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
| | - Ruinan Wang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
| | - Hao Fu
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
| | - Pengchao Zhao
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
| | - Xin Zhao
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China
| | - Guosong Chen
- Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
| | - Gang Li
- Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, 999077, P. R. China
| | - Fuxin Wei
- Department of Orthopedic Surgery, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, 518107, P. R. China
- Shenzhen Key Laboratory of Bone Tissue Repair and Translational Research, Shenzhen, 518107, P. R. China
| | - Liming Bian
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 511442, P. R. China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 511442, P. R. China
- Guangdong Provincial Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 511442, P. R. China
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Bao Z, Cui C, Liu C, Long Y, Wong RMY, Chai S, Qin L, Rubin C, Yip BHK, Xu Z, Jiang Q, Chow SKH, Cheung WH. Prevention of age-related neuromuscular junction degeneration in sarcopenia by low-magnitude high-frequency vibration. Aging Cell 2024:e14156. [PMID: 38532712 DOI: 10.1111/acel.14156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024] Open
Abstract
Neuromuscular junction (NMJ) degeneration is one of pathological factors of sarcopenia. Low-magnitude high-frequency vibration (LMHFV) was reported effective in alleviating the sarcopenia progress. However, no previous study has investigated treatment effects of LMHFV targeting NMJ degeneration in sarcopenia. We first compared morphological differences of NMJ between sarcopenic and non-sarcopenic subjects, as well as young and old C57BL/6 mice. We then systematically characterized the age-related degeneration of NMJ in SAMP8 against its control strain, SAMR1 mice, from 3 to 12 months old. We also investigated effects of LMHFV in SAMP8 on the maintenance of NMJ during the onset of sarcopenia with respect to the Agrin-LRP4-MuSK-Dok7 pathway and investigated the mechanism related to ERK1/2 signaling. We observed sarcopenic/old NMJ presented increased acetylcholine receptors (AChRs) cluster fragmentation and discontinuity than non-sarcopenic/young NMJ. In SAMP8, NMJ degeneration (morphologically at 6 months and functionally at 8 months) was observed associated with the sarcopenia onset (10 months). SAMR1 showed improved NMJ morphology and function compared with SAMP8 at 10 months. Skeletal muscle performance was improved at Month 4 post-LMHFV treatment. Vibration group presented improved NMJ function at Months 2 and 6 posttreatment, accompanied with alleviated morphological degeneration at Month 4 posttreatment. LMHFV increased Dok7 expression at Month 4 posttreatment. In vitro, LMHFV could promote AChRs clustering in myotubes by increasing Dok7 expression through suppressing ERK1/2 phosphorylation. In conclusion, NMJ degeneration was observed associated with the sarcopenia onset in SAMP8. LMHFV may attenuate NMJ degeneration and sarcopenia progression by increasing Dok7 expression through suppressing ERK1/2 phosphorylation.
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Affiliation(s)
- Zhengyuan Bao
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
- Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Can Cui
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chaoran Liu
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yufeng Long
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ronald Man Yeung Wong
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Senlin Chai
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
- Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Ling Qin
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Clinton Rubin
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York, USA
| | - Benjamin Hon Kei Yip
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Zhihong Xu
- Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Qing Jiang
- Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Simon Kwoon-Ho Chow
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Orthopaedic Surgery, Stanford University, Stanford, California, USA
| | - Wing-Hoi Cheung
- Musculoskleletal Research Laboratory, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
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