Reduction of Retrovirus-Induced Immunosuppression by In Vivo Modulation of T Cells during Acute Infection
AUTOR(ES)
He, Hong
FONTE
American Society for Microbiology
RESUMO
Chronic infection with Friend retrovirus is associated with suppressed antitumor immune responses. In the present study we investigated whether modulation of T-cell responses during acute infection would restore antitumor immunity in persistently infected mice. T-cell modulation was done by treatments with DTA-1 anti- glucocorticoid-induced tumor necrosis factor receptor monoclonal antibodies. The DTA-1 monoclonal antibody is nondepleting and delivers costimulatory signals that both enhance the activation of effector T cells and inhibit suppression by regulatory T cells. DTA-1 therapy produced faster Th1 immune responses, significant reductions in both acute virus loads and pathology and, most importantly, long-term improvement of CD8+ T-cell-mediated antitumor responses.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=523250Documentos Relacionados
- Essential Roles for CD8+ T Cells and Gamma Interferon in Protection of Mice against Retrovirus-Induced Immunosuppression
- Murine retrovirus-induced depletion of T cells is mediated through activation-induced death by apoptosis.
- Inhibition of retrovirus-induced disease in mice by camptothecin.
- Role of Natural Killer Cells in Resistance against Friend Retrovirus-Induced Leukemia
- Retrovirus-induced immunodeficiency in mice exacerbates gastrointestinal candidiasis.
