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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
The regulation of cellular metabolism by tumor suppressor p53
Yingjian Liang1, Juan Liu1, Zhaohui Feng1
1The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, 195 Little Albany Street, New Brunswick, NJ, 08903, USA.
Abstract:
As a hallmark of tumor cells, metabolic alterations play a critical role in tumor development and could be targeted for tumor therapy. Tumor suppressor p53 plays a central role in tumor prevention. As a transcription factor, p53 mainly exerts its function in tumor suppression through its transcriptional regulation of its target genes to initiate various cellular responses. Cell cycle arrest, apoptosis and senescence are most well-understood functions of p53, and are traditionally accepted as the major mechanisms for p53 in tumor suppression. Recent studies have revealed a novel function of p53 in regulation of cellular metabolism. p53 regulates mitochondrial oxidative phosphorylation, glycolysis, glutamine metabolism, lipid metabolism, and antioxidant defense. Through the regulation of these metabolic processes, p53 maintains the homeostasis of cellular metabolism and redox balance in cells, which contributes significantly to the role of p53 as a tumor suppressor. Further understanding of the role and molecular mechanism of p53 in cellular metabolism could lead to the identification of novel targets and development of novel strategies for tumor therapy.
Insights
The tumor suppressor p53 protein regulates cellular metabolism, impacting tumor development and offering new therapeutic targets. Understanding p53
Area of Science:
- Oncology
- Molecular Biology
- Metabolic Research
Background:
- Metabolic alterations are a hallmark of cancer, crucial for tumor development and potential therapeutic targets.
- The tumor suppressor p53 protein is vital for preventing tumors, primarily through regulating target genes.
- Established roles of p53 include cell cycle arrest, apoptosis, and senescence.
Purpose of the Study:
- To explore the novel function of p53 in regulating cellular metabolism.
- To elucidate the molecular mechanisms by which p53 influences metabolic pathways.
- To identify new therapeutic strategies for cancer based on p53's metabolic roles.
Main Methods:
- Literature review of recent studies on p53 and cellular metabolism.
- Analysis of p53's regulatory roles in key metabolic pathways.
- Investigation of p53's influence on metabolic homeostasis and redox balance.
Main Results:
- p53 regulates mitochondrial oxidative phosphorylation, glycolysis, glutamine metabolism, and lipid metabolism.
- p53 is involved in antioxidant defense mechanisms.
- p53 maintains cellular metabolism and redox balance, contributing to tumor suppression.
Conclusions:
- p53 has a significant, previously underappreciated role in regulating cellular metabolism.
- p53's metabolic functions are critical for its tumor suppressor activity.
- Further research into p53's metabolic roles may reveal novel cancer therapeutic targets and strategies.
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