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Published on: June 2, 2016
Potential Therapeutic Agents Against Par-4 Target for Cancer Treatment: Where Are We Going?
Renata Virgínia Cavalcanti Santos1, Wanessa Layssa Batista de Sena1, Flaviana Alves Dos Santos1
1Laboratory of Immunomodulation and New Therapeutical Approaches, Research Centre for Therapeutic Innovation Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, PE, Brazil.
Abstract:
One of the greatest challenges of cancer therapeutics nowadays is to find selective targets successfully. Prostate apoptosis response-4 (Par-4) is a selective tumor suppressor protein with an interesting therapeutic potential due to its specificity on inducing apoptosis in cancer cells. Par-4 activity and levels can be downregulated in several tumors and cancer cell types, indicating poor prognosis and treatment resistance. Efforts to increase Par-4 expression levels have been studied, including its use as a therapeutic protein by transfection with adenoviral vectors or plasmids. However, gene therapy is very complex and still presents many hurdles to be overcome. We decided to review molecules and drugs with the capacity to upregulate Par-4 and, thereby, be an alternative to reach this druggable target. In addition, Par-4 localization and function are reviewed in some cancers, clarifying how it can be used as a therapeutic target.
Insights
Prostate apoptosis response-4 (Par-4) is a tumor suppressor protein that induces cancer cell death. This review explores molecules that can increase Par-4 levels as a potential cancer therapy alternative.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Therapeutics
Background:
- Finding selective cancer therapeutic targets remains a significant challenge.
- Prostate apoptosis response-4 (Par-4) is a tumor suppressor protein selectively inducing apoptosis in cancer cells.
- Downregulation of Par-4 correlates with poor prognosis and treatment resistance in various cancers.
Purpose of the Study:
- To review molecules and drugs capable of upregulating Par-4.
- To explore Par-4 as a druggable target and therapeutic strategy.
- To clarify Par-4's role in cancer localization and function.
Main Methods:
- Literature review of studies on Par-4.
- Analysis of molecules and drugs affecting Par-4 expression.
- Review of Par-4's function and localization in cancer.
Main Results:
- Gene therapy approaches to increase Par-4 expression face complexity and hurdles.
- Several molecules and drugs show potential for upregulating Par-4.
- Par-4's specific role in cancer apoptosis is highlighted.
Conclusions:
- Upregulating Par-4 presents a viable therapeutic strategy.
- Molecules that enhance Par-4 levels offer an alternative to gene therapy.
- Further research into Par-4 targeted therapies is warranted.
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