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Apoptosis in gliomas, and its role in their current and future treatment
Oliver Bögler1, Michael Weller
1William and Karen Davidson Laboratory of Brain Tumor Biology, Hermelin Brain Tumor Center, Department of Neurosurgery, Henry Ford Hospital, Detroit, MI 48202, USA. oliver@bogler.net
Abstract:
Apoptosis has recently entered the spotlight in the continuing search for new therapeutic approaches to cancer because it plays a twofold role in this disease. As stated by Lowe and Lin: "(M)ost cytotoxic anticancer agents induce apoptosis.(and so) the same mutations that suppress apoptosis during tumor development also reduce treatment sensitivity" (1). Therefore, any strategy aimed at increasing the propensity of glioma cells to undergo apoptosis could be therapeutic in its own right, but has the added potential of enhancing their sensitivity to other, established, treatments. As a corollary, understanding apoptotic mechanisms at the molecular level will not only help to explain why gliomas arise, but also identify points of intervention. This review will focus on these points, with emphasis on two families of apoptotic molecules, death ligands and their receptors, and BCL-2 family proteins. Near-term strategies of how apoptosis can be exploited therapeutically are discussed.
Insights
Targeting apoptosis, programmed cell death, offers new cancer therapies. Enhancing glioma cell apoptosis can treat cancer and improve sensitivity to existing treatments.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Apoptosis, or programmed cell death, plays a critical role in cancer development and treatment sensitivity.
- Mutations that inhibit apoptosis contribute to tumor formation and reduce the effectiveness of chemotherapy.
- Understanding apoptosis mechanisms is crucial for developing novel cancer therapies.
Purpose of the Study:
- To review the dual role of apoptosis in cancer, particularly gliomas.
- To highlight key molecular players in apoptosis, including death ligands, receptors, and BCL-2 family proteins.
- To discuss therapeutic strategies that exploit apoptosis for cancer treatment.
Main Methods:
- Review of existing literature on apoptosis in cancer.
- Focus on death ligand/receptor pathways and BCL-2 family proteins.
- Analysis of therapeutic strategies targeting apoptosis.
Main Results:
- Apoptosis is a critical target for cancer therapy due to its role in tumor suppression and chemosensitivity.
- Death ligands/receptors and BCL-2 proteins are key regulators of apoptosis with therapeutic potential.
- Strategies to induce or enhance apoptosis in glioma cells show promise for monotherapy and combination therapy.
Conclusions:
- Exploiting apoptosis offers a promising avenue for novel glioma treatments.
- Targeting specific apoptotic pathways can overcome treatment resistance.
- Further research into molecular mechanisms of apoptosis will identify new therapeutic interventions.