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Nativel F, Smith A, Boulestreau J, Lépine C, Baron J, Marquis M, Vignes C, Le Guennec Y, Veziers J, Lesoeur J, Loll F, Halgand B, Renard D, Abadie J, Legoff B, Blanchard F, Gauthier O, Vinatier C, Rieux AD, Guicheux J, Le Visage C. Micromolding-based encapsulation of mesenchymal stromal cells in alginate for intraarticular injection in osteoarthritis. Mater Today Bio 2023; 19:100581. [PMID: 36896417 PMCID: PMC9988569 DOI: 10.1016/j.mtbio.2023.100581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/27/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
Osteoarthritis (OA) is an inflammatory joint disease that affects cartilage, subchondral bone, and joint tissues. Undifferentiated Mesenchymal Stromal Cells are a promising therapeutic option for OA due to their ability to release anti-inflammatory, immuno-modulatory, and pro-regenerative factors. They can be embedded in hydrogels to prevent their tissue engraftment and subsequent differentiation. In this study, human adipose stromal cells are successfully encapsulated in alginate microgels via a micromolding method. Microencapsulated cells retain their in vitro metabolic activity and bioactivity and can sense and respond to inflammatory stimuli, including synovial fluids from OA patients. After intra-articular injection in a rabbit model of post-traumatic OA, a single dose of microencapsulated human cells exhibit properties matching those of non-encapsulated cells. At 6 and 12 weeks post-injection, we evidenced a tendency toward a decreased OA severity, an increased expression of aggrecan, and a reduced expression of aggrecanase-generated catabolic neoepitope. Thus, these findings establish the feasibility, safety, and efficacy of injecting cells encapsulated in microgels, opening the door to a long-term follow-up in canine OA patients.
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Affiliation(s)
- Fabien Nativel
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Audrey Smith
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France.,UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200, Bruxelles, Belgium
| | - Jeremy Boulestreau
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Charles Lépine
- Nantes Université, CHU Nantes, Department of Pathology, F-44000 Nantes, France
| | - Julie Baron
- Nantes Université, CHU Nantes, Department of Pathology, F-44000 Nantes, France
| | - Melanie Marquis
- UR1268 BIA (Biopolymères Interactions Assemblages), INRAE, F-44300 Nantes, France
| | - Caroline Vignes
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Yoan Le Guennec
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Joelle Veziers
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Julie Lesoeur
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - François Loll
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Boris Halgand
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Denis Renard
- UR1268 BIA (Biopolymères Interactions Assemblages), INRAE, F-44300 Nantes, France
| | - Jerome Abadie
- LabONIRIS, ONIRIS (Nantes Atlantic College of Veterinary Medicine, Food Science and Engineering), F-44300 Nantes, France
| | - Benoit Legoff
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Frederic Blanchard
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Olivier Gauthier
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France.,ONIRIS Nantes-Atlantic College of Veterinary Medicine, Centre de Recherche et D'investigation Préclinique (CRIP), F-44300 Nantes, France
| | - Claire Vinatier
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Anne des Rieux
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200, Bruxelles, Belgium
| | - Jerome Guicheux
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Catherine Le Visage
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
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Felder AA, Monzem S, De Souza R, Javaheri B, Mills D, Boyde A, Doube M. The plate-to-rod transition in trabecular bone loss is elusive. ROYAL SOCIETY OPEN SCIENCE 2021; 8:201401. [PMID: 34113446 PMCID: PMC8188009 DOI: 10.1098/rsos.201401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
Changes in trabecular micro-architecture are key to our understanding of osteoporosis. Previous work focusing on structure model index (SMI) measurements have concluded that disease progression entails a shift from plates to rods in trabecular bone, but SMI is heavily biased by bone volume fraction. As an alternative to SMI, we proposed the ellipsoid factor (EF) as a continuous measure of local trabecular shape between plate-like and rod-like extremes. We investigated the relationship between EF distributions, SMI and bone volume fraction of the trabecular geometry in a murine model of disuse osteoporosis as well as from human vertebrae of differing bone volume fraction. We observed a moderate shift in EF median (at later disease stages in mouse tibia) and EF mode (in the vertebral samples with low bone volume fraction) towards a more rod-like geometry, but not in EF maximum and minimum. These results support the notion that the plate to rod transition does not coincide with the onset of bone loss and is considerably more moderate, when it does occur, than SMI suggests. A variety of local shapes not straightforward to categorize as rod or plate exist in all our trabecular bone samples.
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Affiliation(s)
- A. A. Felder
- Royal Veterinary College, London, UK
- University College London, London, UK
| | - S. Monzem
- Royal Veterinary College, London, UK
- Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - R. De Souza
- Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - B. Javaheri
- Royal Veterinary College, London, UK
- City University of London, London, UK
| | - D. Mills
- Queen Mary University of London, London, UK
| | - A. Boyde
- Queen Mary University of London, London, UK
| | - M. Doube
- Royal Veterinary College, London, UK
- City University of Hong Kong, Kowloon, Hong Kong, Hong Kong Special Administrative Region of the People’s Republic of China
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Li Y, Yang J, Liu Y, Yan X, Zhang Q, Chen J, Zhang Q, Yuan X. Inhibition of mTORC1 in the rat condyle subchondral bone aggravates osteoarthritis induced by the overly forward extension of the mandible. Am J Transl Res 2021; 13:270-285. [PMID: 33527023 PMCID: PMC7847512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
The present study aimed to investigate the role of mammalian target of rapamycin complex 1 (mTORC1) in the remodeling of the condyle subchondral bone in rats with temporomandibular joint osteoarthritis (TMJ OA) and explore the mechanisms involved. In this study, we used rats fitted with appliances to overly extend the mandible forward as an animal model of TMJ OA. Bone samples were collected 2, 4, and 8 weeks after appliance fixation. Histological changes in the condyle subchondral bone were assessed by staining with hematoxylin and eosin, safranin O, and tartrate-resistant acid phosphatase. Real-time polymerase chain reaction and immunohistochemical analyses were performed to evaluate the expression levels of osterix, runt-related transcription factor 2 (RUNX2), osteocalcin (OCN), and mTORC1 in the condyle subchondral bone. The dissected condyles were analyzed using a micro-CT scanner. We also investigated changes in the condyle subchondral bone after mTORC1 pathway inhibition. In the early stages of TMJ OA, preosteoblasts, osteoblasts, and osteoclasts of the condyle subchondral bone were activated, which stimulated subchondral bone loss. MTORC1 was activated in subchondral bone preosteoblasts in rats with TMJ OA. The mTORC1 pathway was inhibited by a local injection of rapamycin, and the number of osteoblasts and mRNA levels of osteogenic markers in the condyle subchondral bone decreased, but the number of osteoclasts was basically unchanged. As a result, in the early stages of TMJ OA, subchondral bone loss and aggravation of OA were observed. These findings suggest that the mTORC1 signaling pathway plays an important role in subchondral bone remodeling during early stages of TMJ OA.
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Affiliation(s)
- Yazhen Li
- Department of Orthodontics, The Affiliated Hospital of Qingdao UniversityQingdao, Shandong, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan UniversityChengdu, Sichuan, China
| | - Jing Yang
- Qingdao Stomatological HospitalQingdao, Shandong, China
| | - Ying Liu
- Department of Stomatology, Secondary Hospital of Shandong UniversityJinan, Shandong, China
| | - Xiao Yan
- Department of Orthodontics, The Affiliated Hospital of Qingdao UniversityQingdao, Shandong, China
| | - Qi Zhang
- Department of Orthodontics, The Affiliated Hospital of Qingdao UniversityQingdao, Shandong, China
| | - Junbo Chen
- Department of Orthodontics, The Affiliated Hospital of Qingdao UniversityQingdao, Shandong, China
| | - Qiang Zhang
- Department of Orthodontics, The Affiliated Hospital of Qingdao UniversityQingdao, Shandong, China
| | - Xiao Yuan
- Department of Orthodontics, The Affiliated Hospital of Qingdao UniversityQingdao, Shandong, China
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