{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T16:35:34Z","timestamp":1762101334116,"version":"3.38.0"},"reference-count":38,"publisher":"American Veterinary Medical Association (AVMA)","issue":"8","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ajvr"],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n<jats:p><jats:bold>Objective<\/jats:bold>\u2014To evaluate transduction efficiency of gene therapy for treatment of osteoarthritis in horses.<\/jats:p>\n<jats:p><jats:bold>Sample<\/jats:bold>\u2014Cartilage and synovial tissues were aseptically collected from the stifle joints of 3 Thoroughbreds; horses were 3, 7, and 12 years old and free from sepsis and long-term drug treatment and were euthanized for reasons unrelated to joint disease.<\/jats:p>\n<jats:p><jats:bold>Procedures<\/jats:bold>\u2014Gene transfer experiments were performed with 8 recombinant adeno-associated viral vector (rAAV) serotypes in monolayer-cultured equine chondrocytes, synovial cells, and mesenchymal stromal cells and in cartilage and synovial tissues.<\/jats:p>\n<jats:p><jats:bold>Results<\/jats:bold>\u2014Serotypes rAAV2\/5 and rAAV2\/2 yielded the highest transduction efficiency in cultured cells 6 days after transduction. Synovial cells and mesenchymal stromal cells were more readily transduced than were chondrocytes. Serotype rAAV2\/6.2 yielded the highest rate of gene expression in both cartilage and synovial tissues at 6 days after inoculation. However, at 30 and 60 days after inoculation, gene expression of serotypes rAAV2\/2 and rAAV2\/5 surpassed that of rAAV2\/6.2 and all other serotypes.<\/jats:p>\n<jats:p><jats:bold>Conclusions and Clinical Relevance<\/jats:bold>\u2014Maximally expressing serotypes changed between 6 and 30 days in tissues; however, the most efficient serotypes for transduction of joint cells over time were also the most efficient serotypes for transduction of joint tissues. In addition, the low transduction efficiency of articular cartilage tissue was paralleled by a low transduction efficiency of isolated chondrocytes. This suggested that the typically low transduction efficiency of articular cartilage may be attributable in part to the low transduction efficiency of the chondrocytes and not solely a result of the dense cartilage matrix.<\/jats:p>","DOI":"10.2460\/ajvr.73.8.1178","type":"journal-article","created":{"date-parts":[[2012,7,31]],"date-time":"2012-07-31T15:59:11Z","timestamp":1343750351000},"page":"1178-1185","source":"Crossref","is-referenced-by-count":16,"title":["Influence of serotype, cell type, tissue composition, and time after inoculation on gene expression in recombinant adeno-associated viral vector\u2013transduced equine joint tissues"],"prefix":"10.2460","volume":"73","author":[{"given":"Jeffrey B.","family":"Mason","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luk 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