1
|
Marr N, Zamboulis DE, Werling D, Felder AA, Dudhia J, Pitsillides AA, Thorpe CT. The tendon interfascicular basement membrane provides a vascular niche for CD146+ cell subpopulations. Front Cell Dev Biol 2023; 10:1094124. [PMID: 36699014 PMCID: PMC9869387 DOI: 10.3389/fcell.2022.1094124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023] Open
Abstract
Introduction: The interfascicular matrix (IFM; also known as the endotenon) is critical to the mechanical adaptations and response to load in energy-storing tendons, such as the human Achilles and equine superficial digital flexor tendon (SDFT). We hypothesized that the IFM is a tendon progenitor cell niche housing an exclusive cell subpopulation. Methods: Immunolabelling of equine superficial digital flexor tendon was used to identify the interfascicular matrix niche, localising expression patterns of CD31 (endothelial cells), Desmin (smooth muscle cells and pericytes), CD146 (interfascicular matrix cells) and LAMA4 (interfascicular matrix basement membrane marker). Magnetic-activated cell sorting was employed to isolate and compare in vitro properties of CD146+ and CD146- subpopulations. Results: Labelling for CD146 using standard histological and 3D imaging of large intact 3D segments revealed an exclusive interfascicular cell subpopulation that resides in proximity to a basal lamina which forms extensive, interconnected vascular networks. Isolated CD146+ cells exhibited limited mineralisation (osteogenesis) and lipid production (adipogenesis). Discussion: This study demonstrates that the interfascicular matrix is a unique tendon cell niche, containing a vascular-rich network of basement membrane, CD31+ endothelial cells, Desmin+ mural cells, and CD146+ cell populations that are likely essential to tendon structure and/or function. Contrary to our hypothesis, interfascicular CD146+ subpopulations did not exhibit stem cell-like phenotypes. Instead, our results indicate CD146 as a pan-vascular marker within the tendon interfascicular matrix. Together with previous work demonstrating that endogenous tendon CD146+ cells migrate to sites of injury, our data suggest that their mobilisation to promote intrinsic repair involves changes in their relationships with local interfascicular matrix vascular and basement membrane constituents.
Collapse
Affiliation(s)
- Neil Marr
- Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom
| | - Danae E. Zamboulis
- Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom
| | - Dirk Werling
- Pathobiology and Population Sciences, Centre for Vaccinology and Regenerative Medicine, Royal Veterinary College, Hatfield, United Kingdom
| | - Alessandro A. Felder
- Research Software Development Group, Advanced Research Computing, University College London, London, United Kingdom
| | - Jayesh Dudhia
- Clinical Sciences and Services, Royal Veterinary College, Hatfield, United Kingdom
| | | | - Chavaunne T. Thorpe
- Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom
| |
Collapse
|
2
|
Fu J, Zhang J, Jiang T, Ao X, Li P, Lian Z, Li C, Zhang X, Liu J, Huang M, Zhang Z, Wang L. mTORC1 coordinates NF-κB signaling pathway to promote chondrogenic differentiation of tendon cells in heterotopic ossification. Bone 2022; 163:116507. [PMID: 35908648 DOI: 10.1016/j.bone.2022.116507] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/02/2022]
Abstract
Heterotopic ossification (HO) is a pathological bone formation based on endochondral ossification distinguished by ossification within muscles, tendons, or other soft tissues. There has been growing studies focusing on the treatment with rapamycin to inhibit HO, but the mechanism of mTORC1 on HO remains unclear. Tendon cells (TDs) are the first cells to form during tendon heterotopic ossification. Here, we used an in vivo model of HO and an in vitro model of chondrogenesis induction to elucidate the effect and underlying mechanism of mTORC1 in HO. The current study highlights the effect of rapamycin on murine Achilles tenotomy-induced HO and the role of mTORC1 signaling pathway on TDs. Our result showed that mTORC1 was activation in the early stage of HO, whereas the mTORC1 maintained low expression in the mature ectopic cartilage tissue and the ectopic bone formation sites. The use of mTORC1-specific inhibitor (rapamycin) immediately after Achilles tendon injury could suppress the formation of HO; once ectopic cartilage and bone had formed, treatment with rapamycin could not significantly inhibit the progression of HO. Mechanistically, mTORC1 stimulation by silencing of TSC1 promoted the expression of the chondrogenic markers in TDs. In TDs, treated with mTORC1 stimulation by silencing of TSC1, mTORC1 increased the activation of the NF-κB signaling pathway. NF-κB selective inhibitor BAY11-7082 significantly suppressed the chondrogenesis of TDs that treated with mTORC1 stimulation by silencing of TSC1. Together, our findings demonstrated that mTORC1 promoted HO by regulating TDs chondrogenesis partly through the NF-κB signaling pathway; and rapamycin could be a viable HO therapeutic regimen.
Collapse
Affiliation(s)
- Jiaming Fu
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jie Zhang
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; Academy of Orthopaedics, Guangdong Province, Guangzhou 510630, China
| | - Tao Jiang
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xiang Ao
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Peng Li
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhengnan Lian
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; Academy of Orthopaedics, Guangdong Province, Guangzhou 510630, China
| | - Chenglong Li
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xibing Zhang
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; Academy of Orthopaedics, Guangdong Province, Guangzhou 510630, China
| | - Jie Liu
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; Academy of Orthopaedics, Guangdong Province, Guangzhou 510630, China
| | - Minjun Huang
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; Academy of Orthopaedics, Guangdong Province, Guangzhou 510630, China
| | - Zhongmin Zhang
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Liang Wang
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; Academy of Orthopaedics, Guangdong Province, Guangzhou 510630, China.
| |
Collapse
|
3
|
Wang HN, Rong X, Yang LM, Hua WZ, Ni GX. Advances in Stem Cell Therapies for Rotator Cuff Injuries. Front Bioeng Biotechnol 2022; 10:866195. [PMID: 35694228 PMCID: PMC9174670 DOI: 10.3389/fbioe.2022.866195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Rotator cuff injury is a common upper extremity musculoskeletal disease that may lead to persistent pain and functional impairment. Despite the clinical outcomes of the surgical procedures being satisfactory, the repair of the rotator cuff remains problematic, such as through failure of healing, adhesion formation, and fatty infiltration. Stem cells have high proliferation, strong paracrine action, and multiple differentiation potential, which promote tendon remodeling and fibrocartilage formation and increase biomechanical strength. Additionally, stem cell-derived extracellular vesicles (EVs) can increase collagen synthesis and inhibit inflammation and adhesion formation by carrying regulatory proteins and microRNAs. Therefore, stem cell-based therapy is a promising therapeutic strategy that has great potential for rotator cuff healing. In this review, we summarize the advances of stem cells and stem cell-derived EVs in rotator cuff repair and highlight the underlying mechanism of stem cells and stem cell-derived EVs and biomaterial delivery systems. Future studies need to explore stem cell therapy in combination with cellular factors, gene therapy, and novel biomaterial delivery systems.
Collapse
Affiliation(s)
- Hao-Nan Wang
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing, China
| | - Xiao Rong
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu, China
| | - Lu-Ming Yang
- Musculoskeletal Sonography and Occupational Performance Lab, Chan Division of Occupational Science and Occupational Therapy, University of Southern California, Los Angeles, CA, United States
| | - Wei-Zhong Hua
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing, China
| | - Guo-Xin Ni
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing, China
- *Correspondence: Guo-Xin Ni,
| |
Collapse
|