Simian recombinant adenovirus delivered by the mucosal route modulates γδ T cells from murine genital tract

Although it has been demonstrated that mucosal immunization using vectors such as simian adenovirus (AdC) stimulates robust adaptive immune responses, there remains a paucity of information on the modulation of innate immune responses by such vectors. Using an established murine model of intravaginal immunization (Ivag), we have investigated whether mucosal γδ T cells participate in immune responses induced by AdC vectors. γδ T cell numbers were found to be increased in the vaginal tract. Moreover, γδ T cells isolated from the genital tract showed an activated phenotype and enhanced expression of cytokine gene. Altogether, our results demonstrate that AdC modulates γδ T cell responses and suggest that this cell population may influence immune responses following vaginal immunization.