Tumour suppressor genes in chemotherapeutic drug response
Dulcie Lai1, Stacy Visser-Grieve, Xiaolong Yang
1Department of Pathology and Molecular Medicine, Queen's University, 88 Stuart Street, Kingston, ON, Canada K7L 3N6.
Abstract:
Since cancer is one of the leading causes of death worldwide, there is an urgent need to find better treatments. Currently, the use of chemotherapeutics remains the predominant option for cancer therapy. However, one of the major obstacles for successful cancer therapy using these chemotherapeutics is that patients often do not respond or eventually develop resistance after initial treatment. Therefore identification of genes involved in chemotherapeutic response is critical for predicting tumour response and treating drug-resistant cancer patients. A group of genes commonly lost or inactivated are tumour suppressor genes, which can promote the initiation and progression of cancer through regulation of various biological processes such as cell proliferation, cell death and cell migration/invasion. Recently, mounting evidence suggests that these tumour suppressor genes also play a very important role in the response of cancers to a variety of chemotherapeutic drugs. In the present review, we will provide a comprehensive overview on how major tumour suppressor genes [Rb (retinoblastoma), p53 family, cyclin-dependent kinase inhibitors, BRCA1 (breast-cancer susceptibility gene 1), PTEN (phosphatase and tensin homologue deleted on chromosome 10), Hippo pathway, etc.] are involved in chemotherapeutic drug response and discuss their applications in predicting the clinical outcome of chemotherapy for cancer patients. We also propose that tumour suppressor genes are critical chemotherapeutic targets for the successful treatment of drug-resistant cancer patients in future applications.
Insights
Tumor suppressor genes are crucial for predicting cancer treatment effectiveness and overcoming drug resistance. Understanding their role in chemotherapy response can lead to better patient outcomes and novel therapeutic strategies.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cancer remains a leading global cause of death, necessitating improved therapeutic strategies.
- Chemotherapy is a primary cancer treatment, but challenges include patient non-response and acquired drug resistance.
- Tumor suppressor genes, critical regulators of cell processes, are frequently inactivated in cancer and influence treatment outcomes.
Purpose of the Study:
- To provide a comprehensive review of major tumor suppressor genes involved in chemotherapeutic drug response.
- To discuss the application of tumor suppressor genes in predicting patient response to chemotherapy.
- To explore the potential of tumor suppressor genes as therapeutic targets for drug-resistant cancers.
Main Methods:
- Literature review and synthesis of existing research on tumor suppressor genes and chemotherapy.
- Analysis of the roles of specific tumor suppressor genes (e.g., Rb, p53, BRCA1, PTEN, Hippo pathway) in drug response.
- Discussion of clinical implications and future therapeutic applications.
Main Results:
- Tumor suppressor genes significantly influence cancer cell sensitivity and resistance to various chemotherapeutic agents.
- Specific tumor suppressor gene alterations correlate with patient response and clinical outcomes in chemotherapy.
- Evidence highlights the critical role of these genes in regulating cell proliferation, apoptosis, and invasion in response to treatment.
Conclusions:
- Tumor suppressor genes are key determinants of chemotherapy efficacy and resistance.
- Targeting tumor suppressor pathways offers a promising avenue for overcoming drug resistance in cancer therapy.
- Further research into tumor suppressor genes can improve personalized cancer treatment and patient prognosis.
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