ArticleReproductive biology and endocrinology : RB&E2024
9-cis-retinoic acid signaling in Sertoli cells regulates their immunomodulatory function to control lymphocyte physiology and Treg differentiation.
Article in Reproductive biology and endocrinology : RB&E, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- RXR Expression Profiles in Yak Reproductive Tissues During Follicular, Luteal, and Pregnancy Phases.Animals : an open access journal from MDPI · 2025Article
- The Remodeling of Mitochondrial-Endoplasmic Reticulum Contacts by Omega-3 Fatty Acids Mitigates Dietary Advanced Glycation End Product-Driven Sertoli Cell Senescence and Oligoasthenozoospermia.International journal of biological sciences · 2025Article
- Effects of the modified "Yijing Fang" on semen quality and reproductive hormones in male yaks with kidney yang deficiency: a focus on mitochondrial apoptosis pathways.Animal reproduction · 2025Article
- Therapeutic potential of Sertoli cells in vivo: alleviation of acute inflammation and improvement of sperm quality.Stem cell research & therapy · 2024Article
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Authors and funding
7 authors.
Funding
Abstract
backgroundTestis is an immune privileged organ, which prevents the immune response against sperm antigens and inflammation. Testicular cells responsible for immune tolerance are mainly Sertoli cells, which form the blood-testis barrier and produce immunosuppressive factors. Sertoli cells prevent inflammation in the testis and maintain immune tolerance by inhibiting proliferation and inducing lymphocyte apoptosis. It has been shown that 9-cis-retinoic acid (9cRA) blocks ex vivo apoptosis of peripheral blood lymphocytes and promotes the differentiation of Treg cells in the gut. However, the role of retinoid signaling in regulating the immune privilege of the testes remains unknown.
objectiveThe aim of this study was to determine whether 9cRA, acting via the retinoic acid receptors (RAR) and the retinoic X receptors (RXR), controls the immunomodulatory functions of Sertoli cells by influencing the secretion of anti-inflammatory/pro-inflammatory factors, lymphocyte physiology and Treg cell differentiation.
methodsExperiments were performed using in vitro model of co-cultures of murine Sertoli cells and T lymphocytes. Agonists and antagonists of retinoic acid receptors were used to inhibit/stimulate retinoid signaling in Sertoli cells.
resultsOur results have demonstrated that 9cRA inhibits the expression of immunosuppressive genes and enhances the expression of pro-inflammatory factors in Sertoli cells and lymphocytes, increases lymphocyte viability and decreases apoptosis rate. Moreover, we have found that 9cRA blocks lymphocyte apoptosis acting through both RAR and RXR and inhibiting FasL/Fas/Caspase 8 and Bax/Bcl-2/Caspase 9 pathways. Finally, we have shown that 9cRA signaling in Sertoli cells inhibits Treg differentiation.
conclusionCollectively, our results indicate that retinoid signaling negatively regulates immunologically privileged functions of Sertoli cells, crucial for ensuring male fertility. 9cRA inhibits lymphocyte apoptosis, which can be related to the development of autoimmunity, inflammation, and, in consequence, infertility.
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