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Macronutrient availability and immune cell responses.

Paulo Estevão1, Ana Júlia Estumano Martins2, Pedro M Moraes-Vieira3

  • 1Laboratory of Immunometabolism, Department of Genetics, Microbiology and Immunology, University of Campinas, Campinas, AP, Brazil; Graduate program in Immunology, Institute of Biomedical Sciences, University of São Paulo, Brazil.

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Summary
This summary is machine-generated.

Dietary macronutrients significantly impact immune cell function and metabolism. Understanding how carbohydrates, lipids, and proteins affect immunity offers potential for new nutritional strategies in immune-mediated diseases.

Keywords:
Inflammation, immunometabolism, immune cellsMacrophagesMetabolismNutrient sensing, fatty acidsNutrients

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Area of Science:

  • Immunology
  • Nutrition Science
  • Metabolic Research

Background:

  • Nutritional status and dietary composition are critical determinants of immune system function.
  • Macronutrients (carbohydrates, lipids, proteins) play key roles in regulating immune cell metabolism, activation, and effector functions.
  • Existing research highlights the intricate relationship between diet and immunity, but a comprehensive synthesis is needed.

Purpose of the Study:

  • To review and synthesize current evidence on how macronutrients influence innate and adaptive immune cells.
  • To explore the specific roles of carbohydrates (glucose, fructose), lipids (fatty acids), and proteins (amino acids) in immune cell behavior.
  • To identify potential nutritional targets for modulating immunity in health and disease.

Main Methods:

  • Systematic review of current scientific literature.
  • Analysis of studies investigating the effects of glucose, fructose, saturated and polyunsaturated fatty acids, and amino acids on immune cells.
  • Synthesis of findings related to immune cell metabolism, signaling, polarization, and effector functions.

Main Results:

  • Carbohydrates differentially modulate inflammatory pathways, trained immunity, and antiviral responses.
  • Lipids influence immune cell signaling and cytokine production, with distinct effects from saturated and polyunsaturated fatty acids.
  • Amino acid availability impacts metabolic reprogramming, immune cell polarization, and overall effector functions.

Conclusions:

  • Macronutrients exert complex, context-dependent effects on immune cell behavior.
  • These interactions present promising avenues for developing targeted nutritional strategies to manage immune-mediated conditions.
  • Further research into nutrient-immune crosstalk is essential for advancing therapeutic approaches in metabolic, infectious, and inflammatory diseases.