Related Experiment Video

Updated: Jun 7, 2026

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
07:23

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome

Published on: June 15, 2016

The role of Stat5 transcription factors as tumor suppressors or oncogenes

G Ferbeyre1, R Moriggl

  • 1Département de Biochimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada. g.ferbeyre@umontreal.ca

Biochimica Et Biophysica Acta
|October 26, 2010
PubMed

Insights

Signal transducer and activator of transcription 5 (Stat5) has dual roles in cancer, promoting proliferation and survival, yet also suppressing tumors by regulating differentiation and senescence. Context is key to Stat5

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Signal transducer and activator of transcription 5 (Stat5) is frequently activated in human cancers.
  • Aberrant Stat5 activity influences genes controlling cell proliferation and survival.
  • Stat5 activation can lead to mitochondrial dysfunction, reactive oxygen species, and DNA damage.

Purpose of the Study:

  • To explore the context-dependent roles of Stat5 in tumorigenesis.
  • To understand how Stat5 regulates cancer cell proliferation, survival, differentiation, and senescence.

Main Methods:

  • Utilized mouse models to investigate Stat5 oncogenic functions.
  • Examined Stat5's impact on mitochondrial function and DNA damage.
  • Analyzed Stat5's regulation of tumor suppressors like SOCS1, p53, and PML.

Main Results:

  • Stat5 can promote cancer by affecting proliferation and survival genes.
  • Stat5 exhibits tumor-suppressive functions, inhibiting progression in liver and fibroblasts.
  • Stat5 regulates cell differentiation and senescence, activating key tumor suppressors.

Conclusions:

  • Stat5 possesses context-dependent roles in cancer, acting as both an oncogene and a tumor suppressor.
  • Understanding Stat5's regulatory mechanisms is crucial for cancer therapy.
  • Stat5's influence on differentiation and senescence highlights its complex role in tumor suppression.

More Related Videos

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter11:32

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter

Published on: March 27, 2020

Related Concept Videos

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...
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...
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

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...
Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

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...