Retinoic acid as a modulator of T cell immunity

Maria Rosa Bono, Gabriela Tejon, Felipe Flores-Santibañez, Dominique Fernandez, Mario Rosemblatt, Daniela Sauma

Research output: Contribution to journalReview articlepeer-review

50 Citations (Scopus)

Abstract

Vitamin A, a generic designation for an array of organic molecules that includes retinal, retinol and retinoic acid, is an essential nutrient needed in a wide array of aspects including the proper functioning of the visual system, maintenance of cell function and differentiation, epithelial surface integrity, erythrocyte production, reproduction, and normal immune function. Vitamin A deficiency is one of the most common micronutrient deficiencies worldwide and is associated with defects in adaptive immunity. Reports from epidemiological studies, clinical trials and experimental studies have clearly demonstrated that vitamin A plays a central role in immunity and that its deficiency is the cause of broad immune alterations including decreased humoral and cellular responses, inadequate immune regulation, weak response to vaccines and poor lymphoid organ development. In this review, we will examine the role of vitamin A in immunity and focus on several aspects of T cell biology such as T helper cell differentiation, function and homing, as well as lymphoid organ development. Further, we will provide an overview of the effects of vitamin A deficiency in the adaptive immune responses and how retinoic acid, through its effect on T cells can fine-tune the balance between tolerance and immunity.

Original languageEnglish
Article number349
JournalNutrients
Volume8
Issue number6
DOIs
Publication statusPublished - 13 Jun 2016

Keywords

  • Homing
  • Oral tolerance
  • Retinoic acid
  • T cell
  • Vitamin A

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

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