| Autor: |
Ingersoll MA; Department of Pharmacology and Neuroscience., Lutze RD; Department of Pharmacology and Neuroscience., Pushpan CK; Department of Pharmacology and Neuroscience., Kelmann RG; Department of Pharmacology and Neuroscience., Liu H; Department of Biomedical Sciences, and., May MT; Department of Pharmacology and Neuroscience., Hunter WJ; Department of Pathology, School of Medicine, Creighton University, Omaha, Nebraska, USA., He DZ; Department of Biomedical Sciences, and., Teitz T; Department of Pharmacology and Neuroscience. |
| Jazyk: |
angličtina |
| Zdroj: |
JCI insight [JCI Insight] 2023 Dec 22; Vol. 8 (24). Date of Electronic Publication: 2023 Dec 22. |
| DOI: |
10.1172/jci.insight.171140 |
| Abstrakt: |
The widely used chemotherapy cisplatin causes permanent hearing loss in 40%-60% of patients with cancer. One drug, sodium thiosulfate, is approved by the FDA for use in pediatric patients with localized solid tumors for preventing cisplatin-induced hearing loss, but more drugs are desperately needed. Here, we tested dabrafenib, an FDA-approved BRAF kinase inhibitor and anticancer drug, in a clinically relevant multidose cisplatin mouse model. The protective effects of dabrafenib, given orally twice daily with cisplatin, were determined by functional hearing tests and cochlear outer hair cell counts. Toxicity of the drug cotreatment was evaluated, and levels of phosphorylated ERK were measured. A dabrafenib dose of 3 mg/kg BW, twice daily, in mice, was determined to be the minimum effective dose, and it is equivalent to one-tenth of the daily FDA-approved dose for human cancer treatment. The levels of hearing protection acquired, 20-25 dB at the 3 frequencies tested, in both female and male mice, persisted for 4 months after completion of treatments. Moreover, dabrafenib exhibited a good in vivo therapeutic index (> 25), protected hearing in 2 mouse strains, and diminished cisplatin-induced weight loss. This study demonstrates that dabrafenib is a promising candidate drug for protection from cisplatin-induced hearing loss. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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