Pattern-Recognition Receptors and Immunometabolic Reprogramming: What We Know and What to Explore

Area of Science:

• Immunology
• Metabolic pathways
• Cellular signaling

Background:

• Immune responses protect hosts via pattern-recognition receptors (PRRs) that detect threats.
• PRRs, including Toll-like receptors (TLRs), NOD-like receptors (NLRs), and others, initiate inflammatory responses.
• The metabolic control of immune cell activity by PRRs is not fully understood.

Purpose of the Study:

• To investigate immunometabolic reprogramming (IR) following the activation of various PRRs.
• To elucidate the link between PRR activation and immune cell metabolic changes.
• To highlight the importance of understanding IR for developing immunotherapies.

Main Methods:

• Review of existing literature on PRR signaling and immunometabolism.
• Analysis of metabolic reprogramming (IR) upon activation of TLRs, NLRs, cGLRs, and RLRs.
• Discussion of factors influencing IR-induced immune responses.

Main Results:

• PRR activation significantly impacts immune cell metabolism.
• The type, duration, and location of PRR activation dictate the extent and nature of metabolic reprogramming.
• Metabolic reprogramming influences both pro- and anti-inflammatory immune cell functions.

Conclusions:

• Immune cell metabolism (immunometabolism) is a key determinant of immune cell phenotype and function.
• Understanding PRR-mediated immunometabolic reprogramming is essential for targeted immunomodulation.
• This knowledge can inform the development of novel therapeutics for inflammatory diseases.