Related Experiment Video

Updated: Dec 22, 2025

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

8.2K

A connection in life and death: The BCL-2 family coordinates mitochondrial network dynamics and stem cell fate

Megan L Rasmussen1, Vivian Gama2

  • 1Department of Cell & Developmental Biology, Vanderbilt University, Nashville, TN, United States.

International Review of Cell and Molecular Biology
|May 9, 2020
PubMed

Insights

The BCL-2 protein family regulates apoptosis and cellular homeostasis. Emerging research explores their role in stem cell development and differentiation, revealing new insights into mitochondrial regulation.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Developmental Biology

Background:

  • The BCL-2 protein family is crucial for regulating the intrinsic apoptosis pathway.
  • These proteins control mitochondrial outer membrane permeabilization (MOMP) through direct binding interactions.
  • Beyond apoptosis, the BCL-2 family's role in cellular homeostasis is an expanding research frontier.

Purpose of the Study:

  • To investigate the BCL-2 protein family's regulatory mechanisms in cellular homeostasis.
  • To explore the function of the BCL-2 family in the development and differentiation of pluripotent stem cells.
  • To elucidate how BCL-2 proteins mediate mitochondrial homeostasis in both cell death and survival contexts.

Main Methods:

  • The study focuses on understanding the molecular interactions within the BCL-2 protein family.
  • Pluripotent stem cells are utilized as a model system to study developmental regulation.
  • Research involves analyzing the BCL-2 family's role in mitochondrial homeostasis.

Main Results:

  • The BCL-2 family directly binds to regulate MOMP following apoptotic stimuli.
  • Emerging evidence indicates BCL-2 proteins coordinate cellular homeostasis through mechanisms beyond apoptosis initiation.
  • The BCL-2 family's involvement in pluripotent stem cell regulation is a key area of ongoing investigation.

Conclusions:

  • Understanding BCL-2 family functions in apoptosis and homeostasis is critical.
  • Further research into BCL-2 mediated mitochondrial regulation in stem cells will yield significant insights.
  • This knowledge could uncover novel aspects of stem cell maintenance and differentiation potential.
Keywords:
ApoptosisBCL-2 familyMitochondriaMitochondrial dynamicsPluripotencyStem cells

More Related Videos

Improving the Accuracy of Flow Cytometric Assessment of Mitochondrial Membrane Potential in Hematopoietic Stem and Progenitor Cells Through the Inhibition of Efflux Pumps07:17

Improving the Accuracy of Flow Cytometric Assessment of Mitochondrial Membrane Potential in Hematopoietic Stem and Progenitor Cells Through the Inhibition of Efflux Pumps

Published on: July 30, 2019

8.2K
Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs08:15

Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs

Published on: August 15, 2025

908

Related Concept Videos

Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
16.4K
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...
8.0K
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
3.9K
The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
4.3K
Molecular Factors Affecting Cell Division01:27

Molecular Factors Affecting Cell Division

Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
3.8K
Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
5.3K