Analyzing Cellular Immunity to AAV in a Canine Model Using ELISPOT Assay.
Publication Type:Journal Article
Source:Methods in molecular biology (Clifton, N.J.), Volume 792, p.65-74 (2012)
Keywords:2012, Center-Authored Paper, Clinical Research Division, October 2011
Adeno-associated viral (AAV) vector-mediated gene transfer represents a promising gene replacement strategy for treating various genetic diseases. One obstacle in using viral-derived vectors for in vivo gene delivery is the development of host immune responses to the vector. Recent studies have demonstrated cellular immune responses specific to capsid proteins of various AAV serotypes in animal models and in human trials for different diseases. We developed a canine-specific ELISPOT assay to detect such immunity in dogs received AAV treatment. Here, we describe in detail the use of a constructed panel of overlapping peptides spanning the entire VP1 sequence of AAV capsid protein to detect specific T-cell responses in peripheral blood in dogs following intramuscular injection of AAV. This high-throughput method allows the identification of T-cell epitopes without the need for large cell numbers and the need for major histocompatibility complex molecule-matched cell lines.
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