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Systems Biology of Metabolic Regulation by Estrogen Receptor Signaling in Breast Cancer
Published on: March 17, 2016
Epigenetic-Metabolic Interplay in the DNA Damage Response and Therapeutic Resistance of Breast Cancer
Chandrima Das1,2, Swagata Adhikari1,2, Apoorva Bhattacharya1
1Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, India.
Abstract:
Therapy resistance is imposing a daunting challenge on effective clinical management of breast cancer. Although the development of resistance to drugs is multifaceted, reprogramming of energy metabolism pathways is emerging as a central but heterogenous regulator of this therapeutic challenge. Metabolic heterogeneity in cancer cells is intricately associated with alterations of different signaling networks and activation of DNA damage response pathways. Here we consider how the dynamic metabolic milieu of cancer cells regulates their DNA damage repair ability to ultimately contribute to development of therapy resistance. Diverse epigenetic regulators are crucial in remodeling the metabolic landscape of cancer. This epigenetic-metabolic interplay profoundly affects genomic stability of the cancer cells as well as their resistance to genotoxic therapies. These observations identify defining mechanisms of cancer epigenetics-metabolism-DNA repair axis that can be critical for devising novel, targeted therapeutic approaches that could sensitize cancer cells to conventional treatment strategies.
Insights
Cancer cells develop drug resistance by altering their metabolism and DNA repair. Understanding the interplay between epigenetics, metabolism, and DNA repair offers new therapeutic strategies for breast cancer.
Area of Science:
- Oncology
- Cancer Biology
- Metabolic Pathways
Background:
- Therapy resistance in breast cancer is a significant clinical challenge.
- Reprogramming of energy metabolism is a key, heterogeneous regulator of drug resistance.
- Metabolic heterogeneity is linked to altered signaling networks and DNA damage response pathways.
Purpose of the Study:
- To investigate how cancer cell metabolism influences DNA damage repair.
- To explore the role of metabolic reprogramming in the development of therapy resistance.
- To identify mechanisms underlying the epigenetics-metabolism-DNA repair axis in cancer.
Main Methods:
- Analysis of metabolic pathways in cancer cells.
- Investigation of DNA damage response mechanisms.
- Exploration of epigenetic regulators' role in metabolic remodeling.
Main Results:
- Cancer cell metabolic reprogramming is intricately linked to DNA damage repair.
- Epigenetic regulators remodel the metabolic landscape, impacting genomic stability.
- The epigenetics-metabolism-DNA repair axis contributes to therapy resistance.
Conclusions:
- Targeting the epigenetics-metabolism-DNA repair axis may overcome therapy resistance.
- Novel therapeutic strategies can sensitize cancer cells to conventional treatments.
- Understanding metabolic heterogeneity is crucial for effective breast cancer management.
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