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Multicolor Flow Cytometry-based Quantification of Mitochondria and Lysosomes in T Cells
06:22

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Published on: January 9, 2019

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T cells with dysfunctional mitochondria induce multimorbidity and premature senescence

Gabriela Desdín-Micó1,2, Gonzalo Soto-Heredero1,2, Juan Francisco Aranda1,2

  • 1Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.

Science (New York, N.Y.)
|May 23, 2020
PubMed

Insights

Dysfunctional T cells accelerate aging by impairing mitochondria, leading to premature death in mice. This highlights the critical role of immunometabolism in regulating lifespan and age-associated diseases.

Area of Science:

  • Immunometabolism
  • Cellular senescence
  • Aging research

Background:

  • The link between immunometabolism and age-associated diseases is not fully understood.
  • Mitochondrial dysfunction in immune cells may contribute to aging processes.

Purpose of the Study:

  • To investigate the role of T cell mitochondrial dysfunction in aging.
  • To determine if T cell defects can accelerate organismal aging.

Main Methods:

  • Studied T cells with deficient mitochondrial transcription factor A (TFAM) in mice.
  • Assessed aging phenotypes, including metabolic, cognitive, physical, and cardiovascular changes.
  • Investigated the impact of blocking TNF-α signaling and NAD precursors.

Main Results:

  • TFAM-deficient T cells accelerated senescence and aging phenotypes in mice, leading to premature death.
  • T cell metabolic failure caused cytokine accumulation, mimicking inflammaging and inducing systemic senescence.
  • Interventions partially rescued aging phenotypes in affected mice.

Conclusions:

  • T cells with mitochondrial defects accelerate aging and reduce lifespan.
  • Immunometabolic control is crucial for regulating aging and preventing age-associated diseases.
  • Targeting T cell metabolism and inflammation may offer therapeutic strategies for aging.

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