Related Experiment Video

Updated: Jan 29, 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

8.4K

BCL-2 and BCL-xL in Cancer: Regulation, Function, and Therapeutic Targeting

João P N Silva1, Bárbara Pinto1,2, Patrícia M A Silva1,3,4

  • 1UNIPRO-Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), 4585-116 Gandra, Portugal.

International Journal of Molecular Sciences
|January 28, 2026
PubMed

Insights

The BCL-2 family proteins BCL-2 and BCL-xL are key regulators of apoptosis and cancer progression. Inhibiting these antiapoptotic proteins shows promise in oncology, despite challenges.

Area of Science:

  • Molecular Biology
  • Cancer Biology
  • Biochemistry

Background:

  • The BCL-2 protein family regulates apoptosis, with BCL-2 and BCL-xL as major antiapoptotic members.
  • These proteins are crucial in preventing mitochondrial outer membrane permeabilization.

Purpose of the Study:

  • To review the molecular regulation of BCL-2 and BCL-xL genes and their structural-functional domains.
  • To explore the multifaceted roles of BCL-2 and BCL-xL in cancer development and drug resistance.
  • To discuss clinical strategies targeting BCL-2 and BCL-xL in oncology.

Main Methods:

  • Literature review focusing on molecular regulation, cancer biology, and clinical trials.
  • Analysis of structural domains and their impact on protein function.
  • Examination of non-apoptotic functions including metabolism and homeostasis.

Main Results:

  • BCL-2 and BCL-xL overexpression promotes cancer invasiveness, angiogenesis, and chemotherapy resistance.
  • These proteins have significant non-apoptotic functions impacting cellular metabolism and dynamics.
  • Targeted inhibition strategies, like BH3 mimetics, are under clinical investigation.

Conclusions:

  • BCL-2 and BCL-xL are critical regulators in cancer biology with diverse roles beyond apoptosis.
  • Targeting BCL-2 and BCL-xL offers therapeutic potential in oncology.
  • Further research is needed to optimize targeted inhibition strategies for improved efficacy and reduced resistance.
Keywords:
BCL-2BCL-xLBH3 mimeticsapoptosis regulationcancer progressiondrug resistancetherapeutic targeting

More Related Videos

Utilizing Functional Genomics Screening to Identify Potentially Novel Drug Targets in Cancer Cell Spheroid Cultures07:48

Utilizing Functional Genomics Screening to Identify Potentially Novel Drug Targets in Cancer Cell Spheroid Cultures

Published on: December 26, 2016

11.8K
Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells16:24

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells

Published on: February 21, 2014

20.7K

Related Concept Videos

Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
2.2K
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
8.9K
Regulated Protein Degradation02:58

Regulated Protein Degradation

It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.8K
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.8K
Positive Regulator Molecules01:45

Positive Regulator Molecules

To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
136.1K
GTPases and their Regulation02:14

GTPases and their Regulation

Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell signaling, vesicular transport, and the regulation of cell shape and motility. Mutation or dysfunction of these proteins can lead to disease. There are around 40,000 known G-proteins that can broadly be classified into two groups ‒  small G-proteins consisting of a single domain and large multi-domain G-proteins.
Large G-proteins,...
9.8K