Related Experiment Video

Updated: Aug 30, 2026

Examining BCL-2 Family Function with Large Unilamellar Vesicles
08:35

Examining BCL-2 Family Function with Large Unilamellar Vesicles

Published on: October 5, 2012

The Bcl-2 family: roles in cell survival and oncogenesis

Suzanne Cory1, David C S Huang, Jerry M Adams

  • 1The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville 3050, Victoria, Australia. cory@wehi.edu.au

Oncogene
|November 25, 2003
PubMed

Insights

Apoptosis, or programmed cell death, is vital for tissue health. The Bcl-2 protein family regulates this process, and their dysfunction is linked to cancer development and potential therapeutic targets.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Apoptosis is a crucial cellular process for tissue homeostasis.
  • Dysregulation of apoptosis is implicated in tumorigenesis.
  • The Bcl-2 protein family acts as key regulators of apoptosis.

Purpose of the Study:

  • To review the mechanisms by which Bcl-2 family proteins sense stress.
  • To summarize their interactions, organelle perturbation, and caspase activation pathways.
  • To explore their role in cell-cycle entry and tumor development.

Main Methods:

  • Literature review of current research on Bcl-2 family proteins.
  • Analysis of stress sensing, protein interactions, and organelle involvement.
  • Examination of evidence linking Bcl-2 family members to cancer.

Main Results:

  • Bcl-2 proteins integrate stress signals to control caspase activation.
  • These proteins interact with each other and affect mitochondria and endoplasmic reticulum.
  • Evidence supports their dual role as oncoproteins and tumor suppressors in cancer.

Conclusions:

  • Bcl-2 family proteins are central to apoptosis regulation and cellular fate.
  • Their dysregulation contributes to cancer, highlighting their potential as therapeutic targets.
  • Targeting these regulators offers promise for novel anticancer strategies.

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

Silencing of BRCA2 to Identify Novel BRCA2-regulated Biological Functions in Cultured Human Cells09:24

Silencing of BRCA2 to Identify Novel BRCA2-regulated Biological Functions in Cultured Human Cells

Published on: August 12, 2015

Related Concept Videos

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...
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.
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

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.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
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...