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Seol D, Choe HH, Zheng H, Brouillette MJ, Fredericks DC, Petersen EB, Song I, Jaidev LR, Salem A, Martin JA. Intra-Articular Adeno-Associated Virus-Mediated Proteoglycan 4 Gene Therapy for Preventing Post-Traumatic Osteoarthritis. Hum Gene Ther 2021; 33:529-540. [PMID: 34610749 PMCID: PMC9142765 DOI: 10.1089/hum.2021.177] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE Lubricin, a glycoprotein encoded by the proteoglycan 4 (PRG4) gene, is an essential boundary lubricant that reduces friction between articular cartilage surfaces. The loss of lubricin subsequent to joint injury plays a role in the pathogenesis of post-traumatic osteoarthritis (PTOA). Here we describe the development and evaluation of an adeno-associated virus (AAV)-based PRG4 gene therapy intended to restore lubricin in injured joints. The green fluorescent protein (GFP) gene was inserted the PRG4 gene to facilitate tracing the distribution of the transgene product (AAV-PRG4-GFP) in vivo. METHODS Transduction efficiency of AAV-PRG4-GFP was evaluated in joint cells, and the conditioned medium containing secreted PRG4-GFP was used for shear loading/friction and viability tests. In vivo transduction of joint tissues following intra-articular injection of AAV-PRG4-GFP was confirmed in the mouse stifle joint in a surgical model of destabilization of the medial meniscus (DMM), and chondroprotective activity was tested in a rabbit anterior cruciate ligament transection (ACLT) model. RESULTS In vitro studies showed that PRG4-GFP has lubricin-like cartilage binding and anti-friction properties. Significant cytoprotective effects were seen when cartilage was soaked in PRG4-GFP prior to cyclic shear loading (n = 3). Polymerase chain reaction and confocal microscopy confirmed the presence of PRG4-GFP DNA and protein, respectively, in a mouse DMM (n = 3 per group). In the rabbit ACLT model, AAV-PRG4-GFP gene therapy enhanced lubricin expression (p = 0.001 versus AAV-GFP: n = 7-14) and protected the cartilage from degeneration (p = 0.014 versus AAV-GFP: n = 9-10) when treatments were administered immediately post-operation, but efficacy was lost when treatment was delayed for 2 weeks. CONCLUSION AAV-PRG4-GFP gene therapy protected cartilage from degeneration in a rabbit ACLT model; however, data from the ACLT model suggest that early intervention is essential for efficacy.
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Affiliation(s)
- Dongrim Seol
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States.,The University of Iowa, 4083, Orthodontics, Iowa City, Iowa, United States;
| | - Hyeong Hun Choe
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States;
| | - Hongjun Zheng
- Washington University School of Medicine in Saint Louis, 12275, Orthopaedic Surgery, St Louis, Missouri, United States;
| | - Marc J Brouillette
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States;
| | - Douglas C Fredericks
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States;
| | - Emily B Petersen
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States;
| | - Ino Song
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States.,The University of Iowa, 4083, Roy J. Carver Biomedical Engineering, Iowa City, Iowa, United States;
| | - L R Jaidev
- The University of Iowa, 4083, Pharmaceutical Sciences and Experimental Therapeutics, Iowa City, Iowa, United States;
| | - Aliasger Salem
- The University of Iowa, 4083, Pharmaceutical Sciences and Experimental Therapeutics, Iowa City, Iowa, United States;
| | - James A Martin
- The University of Iowa, 4083, Orthopedics and Rehabilitation, Iowa City, Iowa, United States.,The University of Iowa, 4083, Roy J. Carver Biomedical Engineering, Iowa City, Iowa, United States.,The University of Iowa, 4083, Pharmaceutical Sciences and Experimental Therapeutics, Iowa City, Iowa, United States;
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Seol D, Zhou C, Brouillette MJ, Song I, Yu Y, Choe HH, Lehman AD, Jang KW, Fredericks DC, Laughlin BJ, Martin JA. Characteristics of meniscus progenitor cells migrated from injured meniscus. J Orthop Res 2017; 35:1966-1972. [PMID: 27813166 PMCID: PMC6354255 DOI: 10.1002/jor.23472] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 10/28/2016] [Indexed: 02/04/2023]
Abstract
Serious meniscus injuries seldom heal and increase the risk for knee osteoarthritis; thus, there is a need to develop new reparative therapies. In that regard, stimulating tissue regeneration by autologous stem/progenitor cells has emerged as a promising new strategy. We showed previously that migratory chondrogenic progenitor cells (CPCs) were recruited to injured cartilage, where they showed a capability in situ tissue repair. Here, we tested the hypothesis that the meniscus contains a similar population of regenerative cells. Explant studies revealed that migrating cells were mainly confined to the red zone in normal menisci: However, these cells were capable of repopulating defects made in the white zone. In vivo, migrating cell numbers increased dramatically in damaged meniscus. Relative to non-migrating meniscus cells, migrating cells were more clonogenic, overexpressed progenitor cell markers, and included a larger side population. Gene expression profiling showed that the migrating population was more similar to CPCs than other meniscus cells. Finally, migrating cells equaled CPCs in chondrogenic potential, indicating a capacity for repair of the cartilaginous white zone of the meniscus. These findings demonstrate that, much as in articular cartilage, injuries to the meniscus mobilize an intrinsic progenitor cell population with strong reparative potential. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1966-1972, 2017.
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Affiliation(s)
- Dongrim Seol
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA
| | - Cheng Zhou
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA,Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242, USA
| | - Marc J. Brouillette
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA
| | - Ino Song
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA,Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242, USA
| | - Yin Yu
- Center for Engineering in Medicine, Massachusetts General Hospital, Boston, MA 02114, USA,Harvard Medical School, Boston, MA 02114, USA
| | - Hyeong Hun Choe
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA
| | - Abigail D. Lehman
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA
| | - Kee W. Jang
- Radiology and Imaging Sciences, National Institutes of Health, Bethesda, MD 20892, USA
| | - Douglas C. Fredericks
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA,Department of Bone Healing Research Laboratory and Iowa Spine Research Laboratory, University of Iowa, Iowa City, IA 52242, USA
| | - Barbara J. Laughlin
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA
| | - James A. Martin
- Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IA 52242, USA,Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242, USA,Correspondence to James A. Martin (Address: 1182 ML, University of Iowa, Iowa City, IA 52242; T: +1-319-335-5810; F: +1-319-335-5631; )
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