Ambrisentan attenuates cisplatin-related mitochondrial dysfunction in the heart via regulation of p53 and NF-κB signaling
Issued Date
2026-03-24
Resource Type
eISSN
20452322
Scopus ID
2-s2.0-105038824850
Pubmed ID
41876703
Journal Title
Scientific Reports
Volume
16
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Scientific Reports Vol.16 No.1 (2026)
Suggested Citation
Khine H.E.E., Mangmool S., Parichatikanond W. Ambrisentan attenuates cisplatin-related mitochondrial dysfunction in the heart via regulation of p53 and NF-κB signaling. Scientific Reports Vol.16 No.1 (2026). doi:10.1038/s41598-026-44822-9 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/116831
Title
Ambrisentan attenuates cisplatin-related mitochondrial dysfunction in the heart via regulation of p53 and NF-κB signaling
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Abstract
Ambrisentan, an endothelin receptor A (ETA) antagonist, confers beneficial effects in cardiovascular diseases, but its role in mitigating chemotherapy-induced cardiotoxicity remains unexplored. This study investigates the protective effects of ambrisentan against cisplatin-induced cardiotoxicity in H9c2 cardiomyoblasts, focusing on its regulatory role via the p53 and NF-κB signaling pathways. Ambrisentan reduced cisplatin-induced apoptosis by downregulating caspase-3/7 activity and BAX expression while upregulating Bcl-2. Cisplatin-induced inflammation was also attenuated by ambrisentan through the reduction of TNFα and IL6 levels. Furthermore, ambrisentan protected cells against cisplatin-induced mitochondrial damage by lowering ROS levels, promoting mitochondrial fusion (OPA1, MFN1), inhibiting fission (DNM1, FIS1), and enhancing mitochondrial biogenesis (ATP5A, NRF1, PGC1α). Structured illumination microscopy revealed that ambrisentan preserved tubular mitochondrial morphology and reversed cisplatin-induced fragmentation. In addition, ambrisentan restored mitochondrial respiration and glycolysis, evidenced by improved oxygen consumption rate and extracellular acidification rate, along with increased pro-survival molecules (p-Akt and p-Erk1/2), under cisplatin-mediated stress. Mechanistically, pharmacological inhibition of p53 and NF-κB enhanced the protective effects of ambrisentan, whereas their activation exacerbated cisplatin-induced cardiac injury. Therefore, ambrisentan may serve as a potential agent for suppressing apoptosis, inflammation, and mitochondrial impairments, offering protection against cisplatin-associated cardiotoxicity through modulation of the p53 and NF-κB pathways.