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1Pediatrics and Lurie Center for Autism, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
Trends in Immunology
|January 10, 2020
Summary
Stress triggers immune cells to release xanthine, which then affects brain cells causing anxiety-like behaviors in mice. This study reveals a new link between the immune system, stress, and anxiety.
Area of Science:
- Neuroimmunology
- Cellular Stress Response
- Mitochondrial Biology
Background:
- The immune system's role in stress regulation is a growing area of research.
- Understanding the cellular mechanisms linking stress to behavioral outcomes is crucial.
Purpose of the Study:
- To elucidate a novel pathway connecting stress, immune cell function, and anxiety-like behaviors.
- To investigate the role of mitochondrial dynamics in stress-induced neuroinflammation.
Main Methods:
- Utilized mouse models to study stress responses in CD4+ T cells.
- Investigated mitochondrial fragmentation and xanthine accumulation.
- Examined the effects of T cell-derived factors on oligodendrocytes.
Main Results:
- Stress induced mitochondrial fragmentation in CD4+ T cells.
- This fragmentation led to increased xanthine accumulation within these immune cells.
- Xanthine released from T cells subsequently impacted oligodendrocyte function, promoting anxiety-like behaviors.
Conclusions:
- A novel stress-induced pathway involving T cell-derived xanthine affects brain cells.
- Mitochondrial fragmentation in immune cells is a key mediator of stress-induced anxiety.
- This finding opens new avenues for understanding and potentially treating stress-related disorders.
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