380843-75-4

Bosutinib, similar to dasatinib, was developed as a dual inhibitor of the SCR family of kinases and the ABL kinase, thus applicable for Ph+ leukemias. In September 2012, the US FDA approved bosutinib (also referred to as SKI-607) for the treatment of relapsed or refractory chronicmyeloid leukemia (CML) for patients with resistance or intolerance to prior therapy.

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Wyeth (United States)

A novel Src kinase inhibitor, suppresses migration and invasion of human breast cancer cells.

Bosutinib (380843-75-4) is a novel, dual Src/Abl inhibitor with IC50 of 1.2 nM and 1 nM, respectively. It is built around a chemical scaffold that is different from that of imatinib. peripheral vasolidator increases cerebral blood flow, potential therapeutic for Altzheimer’s disease, cognitive impairment and dementia.

ChEBI: An aminoquinoline that is 4-[(2,4-dichloro-5-methoxyphenyl)amino]-7-[3-(4-methylpiperazin-1-yl)propoxy]quinoline bearing additional cyano and methoxy substituents at positions 3 and 6 respectively.

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Bosutinib (SKI-606) is an orally active; dual Src/Abl tyrosine kinase inhibitor with potent antiproliferative activity. It does not appear to inhibit c-Kit and PDGRF, which are thought to be the cause of numerous side effects in anticancer treatment with some other tyrosine kinase inhibitors.

Protein kinase inhibitor:

Treatment of Philadelphia chromosome-positive chronic myelogenous leukaemia resistant or intolerant to prior therapy

Possible side effects of bosutinib include Nausea, vomiting, stomach/abdominal pain, loss of appetite, cough, joint pain, headache, or dizziness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Diarrhea is a common side effect.
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Potentially hazardous interactions with other drugs Analgesics: possibly increased risk of ventricular arrhythmias with methadone. Anti-arrhythmics: possibly increased risk of ventricular arrhythmias with amiodarone and disopyramide; concentration possibly increased by dronedarone - avoid or consider reducing dose of bosutinib. Antibacterials: concentration possibly increased by ciprofloxacin, clarithromycin, erythromycin and telithromycin - avoid or consider reducing dose of bosutinib; possibly increased risk of ventricular arrhythmias with moxifloxacin; concentration reduced by rifampicin and possibly rifabutin - avoid. Antidepressants: concentration possibly reduced by St John’s wort - avoid. Antiepileptics: concentration possibly reduced by carbamazepine, fosphenytoin, phenobarbital, phenytoin and primidone - avoid.

Mainly hepatically metabolised. The major circulating metabolites identified in plasma are oxydechlorinated (M2) bosutinib (19% of parent exposure) and N-desmethylated (M5) bosutinib (25% of parent exposure), with bosutinib N-oxide (M6) as a minor circulating metabolite. All the metabolites are inactive. Excretion is mainly via the faeces.

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Bosutinib is a synthetic quinolone derivative and dual kinase inhibitor that targets both Abl and Src kinases with potential antineoplastic activity. Unlike imatinib, bosutinib inhibits the autophosphorylation of both Abl and Src kinases, resulting in inhibition of cell growth and apoptosis. Because of the dual mechanism of action, this agent may have activity in resistant CML disease, other myeloid malignancies and solid tumors. Abl kinase is upregulated in the presence of the abnormal Bcr-abl fusion protein which is commonly associated with chronic myeloid leukemia (CML). Overexpression of specific Src kinases is also associated with the imatinib-resistant CML phenotype.

Golas et al. (2003), SKI-606, a 4-anilino-3-quinolinecarbonitrile dual inhibitor of Src and Abl kinases, is a potent antiproliferative agent against chronic myelogenous leukemia cells in culture and causes regression of K562 xenografts in nude mice; Cancer Res., 63 375 Remsing Rix et al. (2009), Global target profile of the kinase inhibitor bosutinib in primary chronic myeloid leukemia cells; Leukemia, 23 477 Redaelli et al. (2009), Activity of bosutinib, Dasatinib, and nilotinib against 18 imatinib-resistant BCR/ABL mutants; J. Clin. Oncol., 27 469 MacDonald et al. (2018), Src family kinase inhibitor bosutinib enhances retinoic acid-induced differentiation of HL-60 leukemia cells; Leuk. Lymphoma, 59 2941 Vultur et al. (2008), SKI-606 (bosutinib), a novel Src kinase inhibitor, suppresses migration and invasion of human breast cancer cells; Mol. Cancer Ther., 7 1185