Abstract

Rheumatoid arthritis is a chronic autoimmune disease characterized by synovial inflammation, leading to the destruction of cartilage and bone. Previously, we demonstrated that a single intra-articular administration of AAV2-TNFR:Fc vector to rats with experimental arthritis resulted in suppression of disease. For treatment of chronic inflammatory arthritis using intra-articular delivery of AAV2- TNFR:Fc vector, intra-articular re-administrations may be required. In this study, we evaluated if serum anti-AAV2 capsid neutralizing antibodies, elicited after intra-articular administration of AAV2- TNFR:Fc vector to rat joints, affect joint transduction following intra-articular re-administration of an AAV2-FlagLuc vector.

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