Metabolic Regulation of Apoptosis in Cancer
K Matsuura1, K Canfield2, W Feng3
1Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, United States.
Abstract:
Apoptosis is a cellular suicide program that plays a critical role in development and human diseases, including cancer. Cancer cells evade apoptosis, thereby enabling excessive proliferation, survival under hypoxic conditions, and acquired resistance to therapeutic agents. Among various mechanisms that contribute to the evasion of apoptosis in cancer, metabolism is emerging as one of the key factors. Cellular metabolites can regulate functions of pro- and antiapoptotic proteins. In turn, p53, a regulator of apoptosis, also controls metabolism by limiting glycolysis and facilitating mitochondrial respiration. Consequently, with dysregulated metabolism and p53 inactivation, cancer cells are well-equipped to disable the apoptotic machinery. In this article, we review how cellular apoptosis is regulated and how metabolism can influence the signaling pathways leading to apoptosis, especially focusing on how glucose and lipid metabolism are altered in cancer cells and how these alterations can impact the apoptotic pathways.
Insights
Cancer cells disable apoptosis, a cellular suicide process, through altered metabolism. This review explores how glucose and lipid metabolism changes in cancer impact apoptosis signaling pathways.
Area of Science:
- Cellular biology
- Cancer research
- Metabolic pathways
Background:
- Apoptosis, or programmed cell death, is crucial for development and preventing diseases like cancer.
- Cancer cells evade apoptosis, promoting uncontrolled growth, survival, and treatment resistance.
- Metabolism is increasingly recognized as a key factor in cancer cells' evasion of apoptosis.
Purpose of the Study:
- To review the regulation of cellular apoptosis.
- To examine how cellular metabolism influences apoptosis signaling pathways.
- To focus on altered glucose and lipid metabolism in cancer and their impact on apoptosis.
Main Methods:
- Literature review of apoptosis regulation.
- Analysis of metabolic influence on apoptotic signaling.
- Focus on glucose and lipid metabolism alterations in cancer cells.
Main Results:
- Metabolites can modulate the function of proteins involved in apoptosis.
- The p53 protein regulates both apoptosis and cellular metabolism.
- Dysregulated metabolism and p53 inactivation equip cancer cells to evade apoptosis.
Conclusions:
- Altered cellular metabolism is a significant mechanism by which cancer cells evade apoptosis.
- Understanding the interplay between metabolism and apoptosis is vital for cancer therapy.
- Targeting metabolic pathways may offer new strategies to restore apoptosis in cancer cells.
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