The Different Mechanisms of Cancer Drug Resistance: A Brief Review
Behzad Mansoori1,2, Ali Mohammadi1,2, Sadaf Davudian1
1Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Abstract:
Anticancer drugs resistance is a complex process that arises from altering in the drug targets. Advances in the DNA microarray, proteomics technology and the development of targeted therapies provide the new strategies to overcome the drug resistance. Although a design of the new chemotherapy agents is growing quickly, effective chemotherapy agent has not been discovered against the advanced stage of cancer (such as invasion and metastasis). The cancer cell resistance against the anticancer agents can be due to many factors such as the individual's genetic differences, especially in tumoral somatic cells. Also, the cancer drug resistance is acquired, the drug resistance can be occurred by different mechanisms, including multi-drug resistance, cell death inhibiting (apoptosis suppression), altering in the drug metabolism, epigenetic and drug targets, enhancing DNA repair and gene amplification. In this review, we outlined the mechanisms of cancer drug resistance and in following, the treatment failures by common chemotherapy agents in the different type of cancers.
Insights
Cancer drug resistance is a complex challenge, often stemming from altered drug targets. This review explores resistance mechanisms and treatment failures, highlighting the need for advanced strategies against advanced cancers.
Area of Science:
- Oncology
- Pharmacology
- Genetics
Background:
- Anticancer drug resistance is a significant hurdle in cancer treatment.
- Mechanisms of resistance are diverse and complex, involving genetic and cellular alterations.
- Despite advances, effective treatments for advanced cancers with metastasis remain elusive.
Purpose of the Study:
- To review the multifaceted mechanisms of anticancer drug resistance.
- To discuss treatment failures associated with common chemotherapy agents.
- To highlight emerging strategies for overcoming drug resistance.
Main Methods:
- Literature review of scientific articles on cancer drug resistance.
- Analysis of mechanisms including target alteration, multi-drug resistance, and apoptosis suppression.
- Examination of genetic factors, epigenetics, and DNA repair in resistance.
Main Results:
- Cancer drug resistance arises from alterations in drug targets and various cellular mechanisms.
- Factors contributing to resistance include individual genetic differences and acquired resistance.
- Common chemotherapy agents often fail in advanced cancer stages due to these resistance mechanisms.
Conclusions:
- Understanding cancer drug resistance mechanisms is crucial for developing effective therapies.
- Targeted therapies and advanced strategies are needed to overcome resistance in advanced cancers.
- Further research into genetic and epigenetic factors is essential for improving treatment outcomes.
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