ArticleCancer genomics & proteomics
Cordycepin Activates Autophagy to Suppress FGF9-induced TM3 Mouse Leydig Progenitor Cell Proliferation.
Article in Cancer genomics & proteomics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUND/
aimFibroblast growth factor 9 (FGF9) is a member of the human FGF family known for its pivotal roles in various biological processes, such as cell proliferation, tissue repair, and male sex determination including testis formation. Cordycepin, a bioactive compound found in Cordyceps sinensis, exhibits potent antitumor effects by triggering apoptosis and/or autophagy pathways. Our research has unveiled that FGF9 promotes proliferation and tumorigenesis in MA-10 mouse Leydig tumor cells, as the phenomena are effectively countered by cordycepin through apoptosis induction. Moreover, we have observed FGF9-mediated stimulation of proliferation and tumorigenesis in TM3 mouse Leydig progenitor cells, prompting an investigation into the potential inhibitory effect of cordycepin on TM3 cell proliferation under FGF9 treatment. Hence, we hypothesized that cordycepin induces cell death via apoptosis and/or autophagy in FGF9-treated TM3 cells. MATERIALS AND
methodsTM3 cells were treated with cordycepin and/or FGF9, and the flow cytometry, immunofluorescent plus western blotting assays were used to determine how cordycepin regulated Leydig cell death under FGF9 treatment.
resultsOur findings reveal that cordycepin restricts cell viability and colony formation while inducing morphological alterations associated with cell death in FGF9-treated TM3 cells. Surprisingly, cordycepin fails to elicit the expression of key apoptotic markers, suggesting an alternate mechanism of action. Although the expression of certain autophagy-related proteins remains unaltered, a significant up-regulation of LC3-II, indicative of autophagy, is observed in cordycepin-treated TM3 cells under FGF9 influence. Moreover, the inhibition of autophagy by chloroquine reverses cordycepin-induced TM3 cell death, highlighting the crucial role of autophagy in this process.
conclusionOur study demonstrates that cordycepin activates autophagy to induce cell death in TM3 cells under FGF9 treatment conditions.
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