Related Experiment Video

Updated: May 8, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

Non-canonical p53 signaling to promote invasion

Paul Dent1

  • 1Department of Neurosurgery; Massey Cancer Center; Virginia Commonwealth University; Richmond, VA USA.

Cancer Biology & Therapy
|September 13, 2013
PubMed

Insights

Mutated p53 proteins gain oncogenic functions, promoting cell transformation and invasion. These studies reveal increased c-Met activity as the mechanism driving invasiveness in transformed esophageal cells.

Area of Science:

  • Molecular Biology
  • Cancer Research

Background:

  • Mutated p53 proteins can acquire oncogenic functions, distinct from loss of normal p53 activity.
  • Expression of mutant p53 (R175H) and ERBB1 transforms esophageal cells, increasing migration.

Purpose of the Study:

  • To elucidate the mechanism by which p53-mutated esophageal cells become invasive.
  • To investigate the role of c-Met activity in cell invasion.

Main Methods:

  • Cell transformation assays.
  • Analysis of gene expression and protein activity.
  • Assessment of cell migratory and invasive capabilities.

Main Results:

  • Transduction of p53-null cells with mutant p53 can induce cell transformation.
  • Increased c-Met activity was identified as the key factor responsible for the invasiveness of transformed esophageal cells.

Conclusions:

  • Mutant p53 confers oncogenic functions, leading to cell transformation and invasion.
  • Elevated c-Met activity is a critical mediator of invasiveness in esophageal cells expressing mutant p53.
Keywords:
c-Metesophageal cancerp53 mutationtumor invasion

More Related Videos

Knockdown of FAM83A to Verify Its Role in Cervical Cancer Cell Growth and Cisplatin Sensitivity04:20

Knockdown of FAM83A to Verify Its Role in Cervical Cancer Cell Growth and Cisplatin Sensitivity

Published on: February 9, 2024

A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion06:36

A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion

Published on: April 24, 2015

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...
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...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
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.