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Author Spotlight: Exploring Salidroside's Molecular Mechanisms in Breast Cancer Treatment
Published on: June 9, 2023
Entinostat for the treatment of breast cancer
Dario Trapani1, Angela Esposito1, Carmen Criscitiello1
1a Division of Early Drug Development , European Institute of Oncology , Milan , Italy.
Introduction:
Breast cancer accounts for 29% of malignant tumors. It is an heterogenous disease covering a spectrum of different molecular subtypes. Epigenetic aberrations may affect gene expression through DNA and histone proteins modifications thus promoting tumor progression and resistance to anti- tumor treatment. Area covered: This article explores the potential role of entinostat in the treatment of breast cancer. The clinical trials evaluating entinostat are discussed, highlighting preclinical data and early-phase clinical studies results. The emerging activity of entinostat in several clinical settings is evaluated by focusing on endocrine-resistant, HER2 positive and triple-negative breast cancer with promising activity in boosting the immune-system. Expert opinion: Entinostat, a synthetic benzamide derivative class I histone deacetylases (HDACs) inhibitor, inhibits cell proliferation and promotes apoptosis in breast cancer. Several results from clinical trials demonstrate that the addition of an epigenetic therapy to antiestrogen therapy may be an effective approach to targeting resistance pathways in breast cancer, particularly in hormone-positive disease. Agents such as entinostat may have a role in immunogenic modulation. Genetic and pharmacological inhibition studies identified HDAC as a key determinant in the reversal of carcinoma immune escape. This offers the rationale for combining HDAC inhibitors with immunotherapy, including therapeutic cancer vaccines.
Insights
Entinostat, a histone deacetylase inhibitor, shows promise in treating various breast cancer subtypes, including resistant forms. It may also enhance immunotherapy effectiveness by modulating the tumor immune microenvironment.
Area of Science:
- Oncology
- Epigenetics
- Pharmacology
Background:
- Breast cancer is a heterogeneous disease with diverse molecular subtypes.
- Epigenetic alterations, including DNA and histone modifications, drive tumor progression and treatment resistance.
- Histone deacetylases (HDACs) play a critical role in regulating gene expression and cellular processes in cancer.
Purpose of the Study:
- To explore the therapeutic potential of entinostat in breast cancer treatment.
- To review clinical trial data evaluating entinostat's efficacy across different breast cancer subtypes.
- To assess entinostat's role in overcoming endocrine resistance and enhancing anti-tumor immunity.
Main Methods:
- Review of preclinical data and early-phase clinical studies on entinostat.
- Analysis of clinical trials investigating entinostat in endocrine-resistant, HER2-positive, and triple-negative breast cancer.
- Evaluation of entinostat's impact on immune modulation and its combination potential with immunotherapy.
Main Results:
- Entinostat, a class I HDAC inhibitor, demonstrates anti-proliferative and pro-apoptotic effects in breast cancer cells.
- Clinical trials suggest entinostat combined with antiestrogen therapy can overcome resistance pathways, particularly in hormone-positive breast cancer.
- Entinostat exhibits potential in modulating the immune system, offering a rationale for combination with immunotherapy.
Conclusions:
- Epigenetic therapy with entinostat represents a promising strategy for managing breast cancer, especially in resistant cases.
- Entinostat may enhance the efficacy of current therapies by targeting resistance mechanisms and boosting anti-tumor immunity.
- Combining entinostat with immunotherapy, such as cancer vaccines, warrants further investigation for improved treatment outcomes.
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