Fixed-drug combinations have been used for the treatment of cancer. Current anticancer therapies, however, tend to induce resistance and provoke important toxicity. Therefore, there is still a need for further optimized treatments that would also take into account drug-drug interactions. Tyrosine kinase inhibitors (TKIs) and Histone deacetylase inhibitors (HDACIs) are two anticancer drug classes currently used separately in clinical practice. Those drug classes are currently being investigated in clinical trials. Several findings confirm the safety and tolerability of these treatments accompanied by clinical improvement. The activity and specificity of drug combinations can be further improved by employing appropriate drug delivery systems, such as nanocarrier systems. The different pharmacokinetic profiles of each drug may lead to a loss in synergistic effects, affecting treatment efficiency. Several combinations of either TKI or HDACI with an anticancer drug of another class co-loaded inside liposomal carriers are being investigated in vivo and show promising results in terms of efficacy and safety. In this review we discuss strategies for the delivery of synergistic drug combinations for cancer treatment.
Keywords: Chemotherapy; Drug combination; Drug delivery; Drug-drug interaction; Histone deacetylase inhibitors; Liposomes; Tyrosine kinase inhibitors.
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