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Sex, cells, and metabolism: Androgens temper Th17-mediated immunity
Nikita L. Mani, Samuel E. Weinberg
Nikita L. Mani, Samuel E. Weinberg
Published December 2, 2024
Citation Information: J Clin Invest. 2024;134(23):e186520. https://doi.org/10.1172/JCI186520.
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Commentary

Sex, cells, and metabolism: Androgens temper Th17-mediated immunity

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Abstract

Sex-based differences in autoimmune disease susceptibility have long been recognized, prompting investigations into how sex hormones influence immunity. Recent advances suggest that hormones may shape immune responses by altering cellular metabolism. In this issue of the JCI, Chowdhury et al. authenticates this model, showing that androgen receptor signaling modulates T helper 17 (Th17) cell metabolism, specifically glutaminolysis, reducing airway inflammation in males. This work provides insight into sex-specific regulation of immunity, highlighting the interplay between hormones, metabolism, and immune function. The findings raise intriguing questions about how hormonal fluctuations affect immunity and how sex-specific metabolic pathways might be leveraged for targeted therapies in autoimmune diseases.

Authors

Nikita L. Mani, Samuel E. Weinberg

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Figure 1

Androgen receptor signaling drives differences in Th17 cell metabolism and function during allergic airway inflammation.

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Androgen receptor signaling drives differences in Th17 cell metabolism a...
In male Th17 cells, androgen receptor (AR) signaling suppresses glutamine metabolism, resulting in mild allergic inflammation and reduced IL-17 production. The presence of androgens activates AR, which translocates to the nucleus and potentially regulates genes involved in glutamine metabolism, though the exact mechanism of AR-mediated suppression of glutamine metabolism remains to be fully elucidated. In contrast, female Th17 cells exhibit enhanced glutamine metabolism and severe allergic inflammation. The absence of AR signaling allows for increased glutamine (GLN) uptake through plasma membrane transporters and elevated glutaminase (GLS) activity. This leads to higher glutamate (Glu) production, which feeds into the TCA cycle and contributes to glutathione (GSH) synthesis. The enhanced glutamine metabolism in female Th17 cells correlates with increased IL-17 production and secretion, exacerbating allergic inflammation. Further research is needed to elucidate the precise molecular mechanisms linking enhanced glutamine metabolism to increased IL-17 production and Th17 cell pathogenicity in females, as the exact pathway has yet to be fully characterized.

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ISSN: 0021-9738 (print), 1558-8238 (online)

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