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Immune T cells become Exhausted in Chronic Fatigue Syndrome Patients

Immune T cells become exhausted in chronic fatigue syndrome patients
scRNA-seq analysis of T cells in ME. Credit: Proceedings of the National Academy of Sciences (2024). DOI: 10.1073/pnas.2415119121

Chronic fatigue syndrome creates conditions where pathogen-killing immune T cells become exhausted, according to a new Cornell University study.

The study’s authors knew the immune system was dysregulated in patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) but wondered which parts shift with the condition.

A systematic exploration revealed that key CD8+ T cells displayed one of the most pronounced signatures of dysregulation, with signs of constant stimulation that lead to an exhausted state, a condition that is well-studied in cancer.

“This is an important finding for ME/CFS because now we can examine the T cells more car...

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