Tag: tcell

New Research Links T Cell Exhaustion to ME/CFS

A new study from our Center, recently published in the Proceedings of the National Academy of Sciences (PNAS), has revealed important insights into how ME/CFS affects the immune system. The research team, led by Associate Director Andrew Grimson, discovered that patients with ME/CFS show signs of T cell exhaustion, a condition where immune cells become less effective at fighting infections. This finding helps to better understand the chronic nature of the disease and may open new paths for treatment approaches.

Fig. 5 Model of proposed ME T cell mechanism of action via exhaustion.
Source: PNAS publication

The Cornell Chronicle has published an accompanying article about this research, offering a detailed look at the study’s implications for ME/CFS patients. The article explains how the research team conducted their investigation and what these findings might mean for future treatment strategies. You can read the full Cornell Chronicle coverage to learn more about this significant development in ME/CFS research.

Fatty Acid Oxidation in ME/CFS Immune Cell Populations

A new publication from the Center on fatty acid oxidation in immune cells has appeared today. Jessica Maya is the lead author of Altered Fatty Acid Oxidation in Lymphocyte Populations of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome published in the International Journal of Molecular Sciences.

As discussed in the paper, there is more evidence for abnormal immunometabolism in ME/CFS. Maya utilized her expertise in flow cytometry and Seahorse flux analysis to demonstrate this dysfunction. She isolated natural killer (NK), helper T (CD4), and cytotoxic T (CD8) cell populations from both healthy donors and people with ME/CFS. These immune cell populations were studied in their circulating state and after stimulation. The stimulation process aims to mimic an immune response. Maya’s findings showed that all three of the cell types have an increased use of fats to power their activities when compared to healthy donors. Her results show that ME/CFS immune cells have a greater reliance on fats for energy when they are stimulated. Overall, these findings support the presence of an altered metabolic state in certain immune cells in individuals with ME/CFS.

Maya outlines these findings in her graphical and video abstracts inserted below.

Graphical abstract by Jessica Maya
Video abstract by Jessica Maya
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