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.

Cell & Bioscience
|February 8, 2013
PubMed

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.

Related Concept Videos

Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...