Saporin-conjugated tetramers identify efficacious anti-HIV CD8+ T-cell specificities.
oleh: Ellen M Leitman, Christine D Palmer, Søren Buus, Fabian Chen, Lynn Riddell, Stuart Sims, Paul Klenerman, Asier Sáez-Cirión, Bruce D Walker, Paul R Hess, Marcus Altfeld, Philippa C Matthews, Philip J R Goulder
| Format: | Article |
|---|---|
| Diterbitkan: | Public Library of Science (PLoS) 2017-01-01 |
Deskripsi
Antigen-specific T-cells are highly variable, spanning potent antiviral efficacy and damaging auto-reactivity. In virus infections, identifying the most efficacious responses is critical to vaccine design. However, current methods depend on indirect measures or on ex vivo expanded CTL clones. We here describe a novel application of cytotoxic saporin-conjugated tetramers to kill antigen-specific T-cells without significant off-target effects. The relative efficacy of distinct antiviral CD8+ T-cell specificity can be directly assessed via antigen-specific CD8+ T-cell depletion. The utility of these reagents is demonstrated here in identifying the CD8+ T-cell specificity most effective in preventing HIV progression in HIV-infected HLA-B*27-positive immune controllers.