Targeting Antigen to Clec9A Primes Follicular Th Cell Memory Responses Capable of Robust Recall
Yu Kato, Ali Zaid, Gayle M Davey, Scott N Mueller, Stephen L Nutt, Dimitra Zotos, David M Tarlinton, Ken Shortman, Mireille H Lahoud, William R Heath, Irina Caminschi
The Journal of Immunology | AMER ASSOC IMMUNOLOGISTS | Published : 2015
Targeting Ags to dendritic cell (DC) surface receptors can induce a variety of responses depending on the DC type targeted, the receptor targeted, and the adjuvant used. Clec9A (DNGR-1), which is expressed by CD8(+) DCs, has been shown to bind F-actin exposed on damaged cells. Targeting Ag to this receptor in mice and nonhuman primates induces strong humoral immunity even in the absence of adjuvant, a process seen for a few select DC receptors. In contrast with other receptors, however, targeting Clec9A induces long-lived, affinity-matured Ab responses that are associated with efficient CD4(+) T cell responses shown to possess properties of follicular Th cells (TFH). In this article, we prov..View full abstract
This work was supported by the National Health and Medical Research Council of Australia and the Australian Research Council.