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Review
. 2024 Apr 9;57(4):632-648.
doi: 10.1016/j.immuni.2024.03.014.

Control of adaptive immunity by pattern recognition receptors

Shaina L Carroll  1 , Chandrashekhar Pasare  2 , Gregory M Barton  3
Affiliations
Review

Control of adaptive immunity by pattern recognition receptors

Shaina L Carroll et al. Immunity. .

Abstract

One of the most significant conceptual advances in immunology in recent history is the recognition that signals from the innate immune system are required for induction of adaptive immune responses. Two breakthroughs were critical in establishing this paradigm: the identification of dendritic cells (DCs) as the cellular link between innate and adaptive immunity and the discovery of pattern recognition receptors (PRRs) as a molecular link that controls innate immune activation as well as DC function. Here, we recount the key events leading to these discoveries and discuss our current understanding of how PRRs shape adaptive immune responses, both indirectly through control of DC function and directly through control of lymphocyte function. In this context, we provide a conceptual framework for how variation in the signals generated by PRR activation, in DCs or other cell types, can influence T cell differentiation and shape the ensuing adaptive immune response.

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Conflict of interest statement

Declaration of interests G.M.B. is a member of the Scientific Advisory Boards of X-Biotix Therapeutics and Actym Therapeutics and has served as a consultant for Lycia Therapeutics.

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