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White Adipose Tissue Is a Reservoir for Memory T Cells and Promotes Protective Memory Responses to Infection.

Immunity | 2017

White adipose tissue bridges body organs and plays a fundamental role in host metabolism. To what extent adipose tissue also contributes to immune surveillance and long-term protective defense remains largely unknown. Here, we have shown that at steady state, white adipose tissue contained abundant memory lymphocyte populations. After infection, white adipose tissue accumulated large numbers of pathogen-specific memory T cells, including tissue-resident cells. Memory T cells in white adipose tissue expressed a distinct metabolic profile, and white adipose tissue from previously infected mice was sufficient to protect uninfected mice from lethal pathogen challenge. Induction of recall responses within white adipose tissue was associated with the collapse of lipid metabolism in favor of antimicrobial responses. Our results suggest that white adipose tissue represents a memory T cell reservoir that provides potent and rapid effector memory responses, positioning this compartment as a potential major contributor to immunological memory.

Pubmed ID: 29221731 RIS Download

Additional research tools detected in this publication

Antibodies used in this publication

Associated grants

  • Agency: NIAID NIH HHS, United States
    Id: R01 AI099222
  • Agency: Intramural NIH HHS, United States
    Id: ZIA AI001132-06
  • Agency: NIAID NIH HHS, United States
    Id: ZIA AI001132
  • Agency: NIAID NIH HHS, United States
    Id: R01 AI103062

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