ArticleFrontiers in cellular and infection microbiology2025
Guanine nucleoside alleviates mycophenolic acid-induced toxicity in mouse embryonic stem cells.
Article in Frontiers in cellular and infection microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.
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Corrections and comments
- Erratum issued
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9 authors.
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Abstract
Introduction: Mycophenolic acid (MPA), an immunosuppressant widely used in organ transplantation and the treatment of autoimmune diseases, poses a teratogenic risk to mammalian fetuses. Guanine nucleoside (GUO), an important intermediate in purine metabolism, has the potential to modulate immune responses. Methods: In this study, we systematically evaluated the effects of MPA at various concentrations (0.05, 0.075, 0.1 μM) on the proliferation, apoptosis,and differentiation of mouse embryonic stem cells (PGK12.1), and investigated whether GUO at different concentrations (2, 4, 8 mM) could mitigate MPA induced toxicity. Results: The results showed that MPA inhibited the viability of PGK12.1 cells in a dose dependent manner, increased reactive oxygen species (ROS) levels, reduced mitochondrial membrane potential, significantly down regulated the expression of proliferation-related genes (PCNA, CCND1, CDK1) and the antiapoptotic gene Bcl2, up regulated apoptotic genes (Bax, Caspase3), and disrupted the differentiation potential of PGK12.1 cells. Notably, treatment with 8 mM GUO significantly ameliorated these toxic effects. RNA-seq analysis revealed that pathways associated with cell proliferation, apoptosis, and differentiation (including TGF-b, PI3K-AKT, and p53) were significantly enriched in the MPA-treated group, suggesting that these signaling pathways may be involved in the response to the MPA-induced phenotype, whereas GUO may potentially counteract these effects through the regulation of pathways associated with chromatin architecture and cytoskeletal organization. Discussion and conclusion: This study elucidates the toxic effects of MPA on mouse embryonic stem cells and highlights the protective role of GUO, providing a foundation for further investigations into the mechanisms underlying MPA induced toxicity.
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