Related Experiment Video

Updated: Jul 16, 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

Survivin Associates with VDAC2 and Bcl2-Family Proteins at the Mitochondrial Outer Membrane

Adesh D Vaidya1, Hilmi Arica1, Hana Abdelkabir1

  • 1School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK.

International Journal of Molecular Sciences
|July 15, 2026
PubMed

Insights

Survivin, a cancer protein, interacts with VDAC2, a mitochondrial protein. This suggests survivin may block cell death pathways upstream of caspases, offering new anti-cancer therapy targets.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cancer Research

Background:

  • Survivin is an inhibitor of apoptosis protein (IAP) implicated in cancer.
  • IAPs typically inhibit programmed cell death by binding caspases.
  • The precise mechanisms by which survivin inhibits apoptosis are not fully understood.

Purpose of the Study:

  • To investigate the interaction of survivin with other proteins.
  • To determine if survivin functions as a canonical IAP or utilizes alternative cell death suppression mechanisms.
  • To explore novel therapeutic strategies targeting survivin in cancer.

Main Methods:

  • Investigated survivin interactions using co-immunoprecipitation assays.
  • Utilized western blotting to detect protein interactions.
  • Analyzed the role of Bcl2-family members in mediating survivin interactions.

Main Results:

  • Identified a novel interaction between survivin and VDAC2 (voltage-dependent anion channel 2), a mitochondrial outer membrane protein.
  • Demonstrated that this interaction is indirect and potentially mediated by Bcl2-family proteins.
  • Showed that survivin can suppress mitochondrial apoptosis upstream of caspase activation.

Conclusions:

  • Survivin interacts with VDAC2, suggesting a role in regulating mitochondrial apoptosis.
  • This interaction provides a new mechanism for survivin-mediated cell death suppression.
  • Targeting the survivin-VDAC2 interaction may offer a novel anti-cancer therapeutic strategy.
Keywords:
BakBaxBcl-XLBcl2-familyVDACapoptosismitochondriaporinsurvivin

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