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Attacking the supply wagons to starve cancer cells to death
Elizabeth M Selwan1, Brendan T Finicle1, Seong M Kim1
1Department of Developmental and Cell Biology, University of California Irvine, CA, USA.
Abstract:
The constitutive anabolism of cancer cells not only supports proliferation but also addicts tumor cells to a steady influx of exogenous nutrients. Limiting access to metabolic substrates could be an effective and selective means to block cancer growth. In this review, we define the pathways by which cancer cells acquire the raw materials for anabolism, highlight the actionable proteins in each pathway, and discuss the status of therapeutic interventions that disrupt nutrient acquisition. Critical open questions to be answered before apical metabolic inhibitors can be successfully and safely deployed in the clinic are also outlined. In summary, recent studies provide strong support that substrate limitation is a powerful therapeutic strategy to effectively, and safely, starve cancer cells to death.
Insights
Cancer cells rely on a constant supply of nutrients for growth. Starving cancer cells by limiting their access to metabolic substrates offers a promising and safe therapeutic strategy to inhibit tumor progression.
Area of Science:
- Oncology
- Cancer Metabolism
- Molecular Biology
Background:
- Cancer cells exhibit constitutive anabolism, requiring continuous exogenous nutrient supply for proliferation.
- Tumor cells become dependent on nutrient acquisition pathways, presenting therapeutic vulnerabilities.
Purpose of the Study:
- To review nutrient acquisition pathways in cancer cells.
- To identify actionable targets within these pathways.
- To discuss the therapeutic potential of disrupting nutrient acquisition.
Main Methods:
- Literature review of cancer cell metabolism and nutrient transport.
- Analysis of key proteins involved in nutrient acquisition pathways.
- Evaluation of current and emerging therapeutic strategies targeting these pathways.
Main Results:
- Detailed mapping of nutrient acquisition pathways utilized by cancer cells.
- Identification of specific proteins as potential therapeutic targets.
- Assessment of the efficacy and safety of metabolic inhibitors.
Conclusions:
- Substrate limitation is a potent strategy to starve cancer cells.
- Targeting nutrient acquisition offers a selective and effective approach to block cancer growth.
- Further research is needed to optimize the clinical application of metabolic inhibitors.