Related Experiment Video

Updated: May 21, 2026

Induction and Analysis of Epithelial to Mesenchymal Transition
10:37

Induction and Analysis of Epithelial to Mesenchymal Transition

Published on: August 27, 2013

PTEN regulation of ERK1/2 signaling in cancer

Mahandranauth A Chetram1, Cimona V Hinton

  • 1Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA, USA.

Journal of Receptor and Signal Transduction Research
|June 29, 2012
PubMed

Insights

The tumor suppressor PTEN (phosphatase and tensin homolog) regulates the ERK1/2 pathway, crucial in cancer progression. This review explores PTEN

Area of Science:

  • Molecular Biology
  • Cancer Biology
  • Cell Signaling

Background:

  • The tumor suppressor PTEN (phosphatase and tensin homolog) has diverse functions, primarily via its lipid phosphatase activity, but also through phosphatase-independent roles.
  • PTEN is known to regulate key signaling pathways like PI3K/AKT, JAK/STAT, and FAK, which are implicated in cancer development.
  • While PTEN's regulation of most pathways is understood, its precise role in controlling the extracellular signal-regulated kinase (ERK)1/2 pathway remains unclear, despite observed inverse correlations in malignancies.

Purpose of the Study:

  • To review the current understanding of how PTEN (phosphatase and tensin homolog) regulates the ERK1/2 pathway.
  • To elucidate the molecular mechanisms underlying PTEN's control over ERK1/2 signaling.
  • To discuss the potential cross-talk between PTEN-regulated pathways, specifically PI3K/AKT and ERK1/2.

Main Methods:

  • Literature review of studies investigating PTEN and ERK1/2 signaling.
  • Analysis of molecular mechanisms linking PTEN to ERK1/2 activation.
  • Examination of evidence for cross-talk between PTEN-regulated cascades.

Main Results:

  • Accumulating evidence suggests an inverse correlation between PTEN expression and ERK1/2 activity in various cancers.
  • PTEN appears to regulate ERK1/2 by directly targeting components of the shc/Raf/MEK cascade.
  • PTEN also influences the PI3K/AKT pathway, which may indirectly affect ERK1/2 signaling.

Conclusions:

  • PTEN plays a significant role in modulating ERK1/2 pathway activity, a critical factor in cancer.
  • The precise molecular mechanisms of PTEN's regulation of ERK1/2 are still being uncovered.
  • Further research into the interplay between PTEN, PI3K/AKT, and ERK1/2 pathways is warranted for a comprehensive understanding of cancer biology.

More Related Videos

An Immunofluorescent Method for Characterization of Barrett’s Esophagus Cells08:54

An Immunofluorescent Method for Characterization of Barrett’s Esophagus Cells

Published on: July 20, 2014

Related Concept Videos

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...
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...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
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...
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...