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Published on: February 20, 2017
Mechanisms of Taxane Resistance
Sara M Maloney1,2, Camden A Hoover3, Lorena V Morejon-Lasso3
1Harper Cancer Research Institute, South Bend, IN 46617, USA.
Abstract:
The taxane family of chemotherapy drugs has been used to treat a variety of mostly epithelial-derived tumors and remain the first-line treatment for some cancers. Despite the improved survival time and reduction of tumor size observed in some patients, many have no response to the drugs or develop resistance over time. Taxane resistance is multi-faceted and involves multiple pathways in proliferation, apoptosis, metabolism, and the transport of foreign substances. In this review, we dive deeper into hypothesized resistance mechanisms from research during the last decade, with a focus on the cancer types that use taxanes as first-line treatment but frequently develop resistance to them. Furthermore, we will discuss current clinical inhibitors and those yet to be approved that target key pathways or proteins and aim to reverse resistance in combination with taxanes or individually. Lastly, we will highlight taxane response biomarkers, specific genes with monitored expression and correlated with response to taxanes, mentioning those currently being used and those that should be adopted. The future directions of taxanes involve more personalized approaches to treatment by tailoring drug-inhibitor combinations or alternatives depending on levels of resistance biomarkers. We hope that this review will identify gaps in knowledge surrounding taxane resistance that future research or clinical trials can overcome.
Insights
Taxane chemotherapy drugs are vital for epithelial cancers, but resistance limits effectiveness. This review explores taxane resistance mechanisms, inhibitors, and biomarkers for personalized cancer treatment.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Taxanes are a cornerstone chemotherapy for epithelial cancers, improving survival but facing significant response and resistance issues.
- Taxane resistance is complex, involving multiple cellular pathways including proliferation, apoptosis, metabolism, and drug transport.
- Understanding resistance is crucial for optimizing treatment in cancers where taxanes are first-line therapy.
Purpose of the Study:
- To review recent research on taxane resistance mechanisms in key epithelial cancers.
- To discuss current and emerging clinical inhibitors targeting resistance pathways.
- To highlight biomarkers for predicting taxane response and guiding personalized treatment.
Main Methods:
- Comprehensive literature review of research on taxane resistance mechanisms over the last decade.
- Analysis of clinical data on taxane response and resistance in relevant cancer types.
- Examination of studies on targeted inhibitors and biomarkers for taxane resistance.
Main Results:
- Identified multifaceted taxane resistance mechanisms involving proliferation, apoptosis, metabolism, and drug efflux.
- Evaluated current and investigational inhibitors aimed at overcoming taxane resistance.
- Highlighted key biomarkers (gene expression) correlated with taxane response and resistance.
Conclusions:
- Taxane resistance is a major clinical challenge requiring a deeper understanding of underlying mechanisms.
- Targeted inhibitors and personalized approaches based on resistance biomarkers are essential for future taxane therapy.
- Further research and clinical trials are needed to bridge knowledge gaps and improve patient outcomes.
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