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FGF10 mitigates doxorubicin-induced myocardial toxicity in mice via activation of FGFR2b/PHLDA1/AKT axis. | LitMetric

AI Article Synopsis

  • - The study explores the protective role of Fibroblast Growth Factor (FGF) 10 against the heart damage caused by the chemotherapy drug doxorubicin, known for its myocardial toxicity.
  • - Researchers used specific mouse models to examine how FGF10 influences cardiac injury from doxorubicin, finding that lower levels of FGF10 led to more severe oxidative stress and cell damage in the heart.
  • - FGF10 was shown to mitigate doxorubicin's harmful effects by activating a signaling pathway involving FGFR2, PHLDA1, and Akt, suggesting that this pathway could be a new target for protecting the heart in cancer patients undergoing doxorubicin treatment.

Article Abstract

Doxorubicin is a common chemotherapeutic agent in clinic, but myocardial toxicity limits its use. Fibroblast growth factor (FGF) 10, a multifunctional paracrine growth factor, plays diverse roles in embryonic and postnatal heart development as well as in cardiac regeneration and repair. In this study we investigated the role of FGF10 as a potential modulator of doxorubicin-induced cardiac cytotoxicity and the underlying molecular mechanisms. Fgf10 mice and an inducible dominant negative FGFR2b transgenic mouse model (Rosa26; tet(O)sFgfr2b) were used to determine the effect of Fgf10 hypomorph or blocking of endogenous FGFR2b ligands activity on doxorubicin-induced myocardial injury. Acute myocardial injury was induced by a single injection of doxorubicin (25 mg/kg, i.p.). Then cardiac function was evaluated using echocardiography, and DNA damage, oxidative stress and apoptosis in cardiac tissue were assessed. We showed that doxorubicin treatment markedly decreased the expression of FGFR2b ligands including FGF10 in cardiac tissue of wild type mice, whereas Fgf10 mice exhibited a greater degree of oxidative stress, DNA damage and apoptosis as compared with the Fgf10 control. Pre-treatment with recombinant FGF10 protein significantly attenuated doxorubicin-induced oxidative stress, DNA damage and apoptosis both in doxorubicin-treated mice and in doxorubicin-treated HL-1 cells and NRCMs. We demonstrated that FGF10 protected against doxorubicin-induced myocardial toxicity via activation of FGFR2/Pleckstrin homology-like domain family A member 1 (PHLDA1)/Akt axis. Overall, our results unveil a potent protective effect of FGF10 against doxorubicin-induced myocardial injury and identify FGFR2b/PHLDA1/Akt axis as a potential therapeutic target for patients receiving doxorubicin treatment.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10545682PMC
http://dx.doi.org/10.1038/s41401-023-01101-xDOI Listing

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