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Toward a Unifying Hypothesis for Redesigned Lipid Catabolism as a Clinical Target in Advanced, Treatment-Resistant
Paul M Bingham1, Zuzana Zachar1
1Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794, USA.
Abstract:
We review extensive progress from the cancer metabolism community in understanding the specific properties of lipid metabolism as it is redesigned in advanced carcinomas. This redesigned lipid metabolism allows affected carcinomas to make enhanced catabolic use of lipids in ways that are regulated by oxygen availability and is implicated as a primary source of resistance to diverse treatment approaches. This oxygen control permits lipid catabolism to be an effective energy/reducing potential source under the relatively hypoxic conditions of the carcinoma microenvironment and to do so without intolerable redox side effects. The resulting robust access to energy and reduced potential apparently allow carcinoma cells to better survive and recover from therapeutic trauma. We surveyed the essential features of this advanced carcinoma-specific lipid catabolism in the context of treatment resistance and explored a provisional unifying hypothesis. This hypothesis is robustly supported by substantial preclinical and clinical evidence. This approach identifies plausible routes to the clinical targeting of many or most sources of carcinoma treatment resistance, including the application of existing FDA-approved agents.
Insights
Advanced carcinomas reprogram lipid metabolism for energy, driving treatment resistance. Targeting this metabolic adaptation offers new strategies to overcome cancer therapy resistance using existing drugs.
Area of Science:
- Oncology
- Cancer Metabolism
- Biochemistry
Background:
- Lipid metabolism is significantly altered in advanced carcinomas.
- This metabolic reprogramming is linked to cancer cell survival and resistance to therapy.
- Hypoxia within the tumor microenvironment influences these metabolic adaptations.
Purpose of the Study:
- To review the role of redesigned lipid metabolism in advanced carcinomas.
- To understand how altered lipid metabolism contributes to treatment resistance.
- To explore therapeutic strategies targeting cancer-specific lipid metabolism.
Main Methods:
- Review of current research in cancer metabolism and lipid biochemistry.
- Analysis of preclinical and clinical evidence on lipid metabolism in carcinomas.
- Exploration of a unifying hypothesis for targeting cancer treatment resistance.
Main Results:
- Redesigned lipid metabolism in carcinomas enhances lipid catabolism.
- Oxygen availability regulates lipid catabolism, providing energy under hypoxia.
- This metabolic adaptation helps cancer cells survive and recover from treatment.
- Altered lipid metabolism is a key factor in resistance to diverse cancer treatments.
Conclusions:
- Targeting the unique lipid metabolism of advanced carcinomas is a promising strategy.
- This approach may overcome multiple sources of cancer treatment resistance.
- Existing FDA-approved agents could be repurposed for this therapeutic strategy.
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