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Published on: December 9, 2016
F-box proteins involved in cancer-associated drug resistance
Jian Gong1, Yuqian Zhou1, Deliang Liu1
1Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China.
Abstract:
The ubiquitin proteasome system (UPS) regulated human biological processes through the appropriate and efficient proteolysis of cellular proteins. F-box proteins are the vital components of SKP1-CUL1-FBP (SCF)-type E3 ubiquitin ligases that determine substrate specificity. As F-box proteins have the ability to control the degradation of several crucial protein targets associated with drug resistance, the dysregulation of these proteins may lead to induction of chemoresistance in cancer cells. Chemotherapy is one of the most conventional therapeutic approaches of treatment of patients with cancer. However, its exclusive application in clinical settings is restricted due to the development of chemoresistance, which typically results treatment failure. Therefore, overcoming drug resistance is considered as one of the most critical issues that researchers and clinician associated with oncology face. The present review serves to provide a comprehensive overview of F-box proteins and their possible targets as well as their correlation with the chemoresistance and chemosensitization of cancer cells. The article also presents an integrated representation of the complex regulatory mechanisms responsible for chemoresistance, which may lay the foundation to explore sensible candidate drugs for therapeutic intervention.
Insights
F-box proteins regulate protein degradation via the ubiquitin proteasome system (UPS). Their dysregulation contributes to chemoresistance in cancer, highlighting their importance in overcoming drug resistance.
Area of Science:
- Molecular Biology
- Cancer Research
- Biochemistry
Background:
- The ubiquitin proteasome system (UPS) is crucial for cellular protein degradation, maintaining biological homeostasis.
- F-box proteins are key components of SCF (SKP1-CUL1-FBP) E3 ubiquitin ligases, dictating substrate specificity.
- Chemoresistance significantly limits the efficacy of cancer chemotherapy, representing a major clinical challenge.
Purpose of the Study:
- To provide a comprehensive review of F-box proteins and their substrates.
- To elucidate the correlation between F-box protein dysregulation and chemoresistance in cancer cells.
- To explore the role of F-box proteins in chemosensitization and potential therapeutic strategies.
Main Methods:
- Literature review of studies on F-box proteins, UPS, and cancer chemoresistance.
- Analysis of regulatory mechanisms underlying chemoresistance.
- Identification of potential F-box protein targets involved in drug resistance.
Main Results:
- F-box proteins control the degradation of critical targets linked to drug resistance.
- Dysregulation of F-box proteins can induce chemoresistance in cancer cells.
- Understanding these mechanisms can inform the development of novel therapeutic interventions.
Conclusions:
- F-box proteins are pivotal in regulating protein turnover and significantly influence cancer cell chemoresistance.
- Targeting F-box proteins or their pathways may offer strategies to overcome drug resistance.
- Further research into F-box protein functions is essential for advancing cancer therapy.
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