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Updated: Nov 10, 2025

Examining BCL-2 Family Function with Large Unilamellar Vesicles
Published on: October 5, 2012
Targeting BCL-2 in Cancer: Advances, Challenges, and Perspectives
Shirin Hafezi1, Mohamed Rahmani1,2
1Research Institute of Medical & Health Sciences, University of Sharjah, P.O. Box 27272 Sharjah, United Arab Emirates.
Abstract:
The major form of cell death in normal as well as malignant cells is apoptosis, which is a programmed process highly regulated by the BCL-2 family of proteins. This includes the antiapoptotic proteins (BCL-2, BCL-XL, MCL-1, BCLW, and BFL-1) and the proapoptotic proteins, which can be divided into two groups: the effectors (BAX, BAK, and BOK) and the BH3-only proteins (BIM, BAD, NOXA, PUMA, BID, BIK, HRK). Notably, the BCL-2 antiapoptotic proteins are often overexpressed in malignant cells. While this offers survival advantages to malignant cells and strengthens their drug resistance capacity, it also offers opportunities for novel targeted therapies that selectively kill such cells. This review provides a comprehensive overview of the extensive preclinical and clinical studies targeting BCL-2 proteins with various BCL-2 proteins inhibitors with emphasis on venetoclax as a single agent, as well as in combination with other therapeutic agents. This review also discusses recent advances, challenges focusing on drug resistance, and future perspectives for effective targeting the Bcl-2 family of proteins in cancer.
Insights
Targeting BCL-2 proteins, crucial in cancer cell survival and drug resistance, offers new therapeutic strategies. This review details BCL-2 inhibitors, including venetoclax, and discusses future cancer treatment perspectives.
Area of Science:
- Molecular Biology
- Oncology
- Pharmacology
Background:
- Apoptosis, a programmed cell death, is regulated by the BCL-2 protein family.
- Overexpression of antiapoptotic BCL-2 proteins in cancer promotes cell survival and drug resistance.
Purpose of the Study:
- To provide a comprehensive overview of preclinical and clinical studies targeting BCL-2 proteins in cancer.
- To discuss the efficacy of BCL-2 inhibitors, particularly venetoclax, as single agents and in combination therapies.
Main Methods:
- Review of extensive preclinical and clinical studies on BCL-2 protein inhibitors.
- Analysis of venetoclax's role in targeted cancer therapy.
- Discussion of challenges and future directions in BCL-2 family targeting.
Main Results:
- BCL-2 inhibitors, including venetoclax, demonstrate potential in selectively killing cancer cells.
- Combination therapies involving venetoclax show promise for enhanced therapeutic outcomes.
- Drug resistance remains a significant challenge in BCL-2 targeted therapy.
Conclusions:
- Targeting the BCL-2 family offers a promising avenue for novel cancer therapies.
- Venetoclax and other inhibitors represent key advancements in this field.
- Further research is needed to overcome drug resistance and optimize BCL-2 targeted treatments.
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