Related Experiment Video

Updated: Jun 3, 2026

Induction and Validation of Cellular Senescence in Primary Human Cells
08:18

Induction and Validation of Cellular Senescence in Primary Human Cells

Published on: June 20, 2018

Insights into 4E-BP1 and p53 mediated regulation of accelerated cell senescence

Suzan K Chao1, Susan Band Horwitz, Hayley M McDaid

  • 1Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.

Oncotarget
|March 15, 2011
PubMed

Insights

Accelerated cell senescence, a cancer growth arrest, can be reversed even with high p53. This study explores the novel role of 4E-BP1 in senescence and its crosstalk with p53.

Area of Science:

  • Oncology
  • Cell Biology
  • Molecular Biology

Background:

  • Senescence is a tumor suppressive mechanism.
  • Accelerated cell senescence is induced by anti-tumor drugs like doxorubicin.
  • Discodermolide induces senescence; resistance is linked to 4E-BP1 and p53 expression.

Purpose of the Study:

  • To address contradictory findings on senescence reversion with high p53.
  • To summarize research on senescence and mTORC1 signaling.
  • To investigate the novel role of 4E-BP1 in senescence and its crosstalk with p53.

Main Methods:

  • Literature review and synthesis of existing research.
  • Analysis of molecular mechanisms regulating senescence.
  • Exploration of the mTORC1 pathway's role in cell fate.

Main Results:

  • Senescence reversion can occur despite high p53 expression.
  • Reduced 4E-BP1 and increased p53 are associated with resistance to senescence.
  • A novel senescence-associated role for 4E-BP1 in crosstalk with p53 is implicated.

Conclusions:

  • The interplay between p53, 4E-BP1, and mTORC1 signaling is crucial in regulating senescence.
  • Further research is needed to fully understand senescence reversion mechanisms.
  • Targeting these pathways may offer new therapeutic strategies for cancer treatment.

More Related Videos

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence13:59

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence

Published on: August 12, 2018

SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs07:39

SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs

Published on: June 28, 2019

Related Concept Videos

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...
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...
Replicative Cell Senescence02:15

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
Replicative Cell Senescence02:15

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...