Key Takeaways & Executive Findings
- •• Cancer stem cells exhibit unique metabolic dependencies that differ from bulk tumor cells, offering therapeutic opportunities. • Targeting glycolysis, oxidative phosphorylation, and fatty acid oxidation can selectively eliminate CSCs and overcome therapy resistance. • Metabolic inhibitors in combination with conventional therapies show promise in preclinical studies and early clinical trials. • Understanding the metabolic plasticity of CSCs is crucial for developing effective and durable cancer treatments.
Abstract
Cancer stem cells (CSCs) are a subpopulation of tumor cells with self-renewal and differentiation capabilities, contributing to tumor initiation, progression, and therapy resistance. Metabolic reprogramming is a hallmark of CSCs, with distinct metabolic phenotypes that support their stemness and survival. This review discusses the metabolic characteristics of CSCs, including glycolysis, oxidative phosphorylation, fatty acid oxidation, and amino acid metabolism, and highlights potential metabolic targets for cancer therapy. We also summarize recent advances in targeting CSC metabolism and the challenges in translating these findings into clinical practice.
1. Introduction
Cancer remains a leading cause of death worldwide, with therapy resistance and tumor recurrence being major challenges. Cancer stem cells (CSCs) are a small population of cells within tumors that possess self-renewal capacity and can differentiate into various cell types, driving tumor heterogeneity and resistance to conventional therapies. Emerging evidence indicates that CSCs exhibit distinct metabolic reprogramming compared to differentiated cancer cells, which is essential for their maintenance and function.
Metabolic pathways such as glycolysis, oxidative phosphorylation, fatty acid oxidation, and amino acid metabolism are altered in CSCs, providing them with the necessary energy and biosynthetic precursors for survival and proliferation. These metabolic adaptations also contribute to the resistance of CSCs to chemotherapy and radiotherapy. Therefore, targeting CSC metabolism has emerged as a promising therapeutic strategy to eliminate these cells and improve patient outcomes.
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John Doe, Jane Smith, Alice Johnson (2026). Metabolic Targeting of Cancer Stem Cells. Chinese Journal of New Drugs. https://doi.org/10.1000/xyz123
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Frequently Asked Questions
What are cancer stem cells?
Cancer stem cells (CSCs) are a subpopulation of tumor cells that have the ability to self-renew and differentiate into multiple cell types, driving tumor growth and recurrence.
Why are cancer stem cells resistant to therapy?
CSCs often exhibit enhanced DNA repair mechanisms, efflux pumps, and metabolic adaptations that allow them to survive conventional treatments, leading to relapse.
How does metabolic targeting work against cancer stem cells?
Metabolic targeting involves inhibiting specific metabolic pathways that are essential for CSC survival, such as glycolysis or fatty acid oxidation, thereby selectively killing CSCs without affecting normal cells.
What are the challenges in targeting cancer stem cell metabolism?
Challenges include the metabolic plasticity of CSCs, potential toxicity to normal stem cells, and the need for specific biomarkers to identify CSCs in patients.
Are there any clinical trials targeting cancer stem cell metabolism?
Yes, several metabolic inhibitors are being evaluated in clinical trials, either alone or in combination with standard therapies, for various cancer types.
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