Metabolic regulation of organelle homeostasis in lupus T cells

  • Caza T
  • Talaber G
  • Perl A
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Abnormal T-cell signaling and activation are characteristic features in systemic lupus erythematosus (SLE). Lupus T cells are shifted toward an over-activated state, important signaling pathways are rewired, and signaling molecules are replaced. Disturbances in metabolic and organelle homeostasis, importantly within the mitochondrial, endosomal, and autophagosomal compartments, underlie the changes in signal transduction. Mitochondrial hyperpolarization, enhanced endosomal recycling, and dysregulated autophagy are hallmarks of pathologic organelle homeostasis in SLE. This review is focused on the metabolic checkpoints of endosomal traffic that control immunological synapse formation and mitophagy and may thus serve as targets for treatment in SLE. © 2012 Elsevier Inc.

Author-supplied keywords

  • Autophagy
  • Endocytic recycling
  • Mammalian target of rapamycin
  • Mitochondria
  • Systemic lupus erythematosus
  • T cell

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