Abstract: The present disclosure relates to recombinant viral vectors, to pharmaceutical compositions comprising such recombinant vectors, and to methods for prevention and treatment of osteoarthritis in mammals. In particular, this disclosure provides adeno-associated virus (AAV) vectors capable of expressing, in a host, osteoprotective/chondroprotective bioactive proteins, including hyaluronan synthase 2 (HAS2) and lubricin (PRG4). Methods of production of these AAV are provided, as are methods of treatment of osteoarthritis in mammalian joints, by the long-term gene expression of osteoprotective/chondroprotective proteins, including HAS2 and PRG4, in both synovial and chondrocyte cells.

Abstract: The present disclosure relates to recombinant viral vectors, to pharmaceutical compositions comprising such recombinant vectors, and to methods for prevention and treatment of osteoarthritis in mammals. In particular, this disclosure provides adeno-associated virus (AAV) vectors capable of expressing, in a host, osteoprotective/chondroprotective bioactive proteins, including hyaluronan synthase 2 (HAS2) and lubricin (PRG4). Methods of production of these AAV are provided, as are methods of treatment of osteoarthritis in mammalian joints, by the long-term gene expression of osteoprotective/chondroprotective proteins, including HAS2 and PRG4, in both synovial and chondrocyte cells.

Abstract: The present disclosure relates to recombinant viral vectors, to pharmaceutical compositions comprising such recombinant vectors, and to methods for prevention and treatment of osteoarthritis in mammals. In particular, this disclosure provides adeno-associated virus (AAV) vectors capable of expressing, in a host, osteoprotective/chondroprotective bioactive proteins, including hyaluronan synthase 2 (HAS2) and lubricin (PRG4). Methods of production of these AAV are provided, as are methods of treatment of osteoarthritis in mammalian joints, by the long-term gene expression of osteoprotective/chondroprotective proteins, including HAS2 and PRG4, in both synovial and chondrocyte cells.

Abstract: The present invention is directed to improved helper vectors and cell lines for the production of pseudoadenoviral (PAV) vectors containing substantially reduced levels of contaminating helper vector. The invention provides for helper vectors for the production of substantially helper vector-free PAV stocks comprising phag C31 recombinase recognition sequences which, depending upon their arrangement within the helper vector, can prevent helper vector packaging. The invention also provides for improved cell lines for the production of substantially helper vector-free PAV stocks comprising a stably introduced novel circular PAV genome into the cell.