Metabolic labeling and targeted modulation of dendritic cells


Wang H, Sobral MC, Zhang DKY, Cartwright AN, Li AW, Dellacherie MO, Tringides CM, Koshy ST, Wucherpfennig KW, Mooney DJ. Metabolic labeling and targeted modulation of dendritic cells. Nat Mater. 2020;19 (11) :1244-1252.

Date Published:

2020 11


Targeted immunomodulation of dendritic cells (DCs) in vivo will enable manipulation of T-cell priming and amplification of anticancer immune responses, but a general strategy has been lacking. Here we show that DCs concentrated by a biomaterial can be metabolically labelled with azido groups in situ, which allows for their subsequent tracking and targeted modulation over time. Azido-labelled DCs were detected in lymph nodes for weeks, and could covalently capture dibenzocyclooctyne (DBCO)-bearing antigens and adjuvants via efficient Click chemistry for improved antigen-specific CD8+ T-cell responses and antitumour efficacy. We also show that azido labelling of DCs allowed for in vitro and in vivo conjugation of DBCO-modified cytokines, including DBCO-IL-15/IL-15Rα, to improve priming of antigen-specific CD8+ T cells. This DC labelling and targeted modulation technology provides an unprecedented strategy for manipulating DCs and regulating DC-T-cell interactions in vivo.
Last updated on 10/15/2021