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Author Spotlight: Reprogramming Cancer Cells to iPSCs to Study Disease Progression and Treatment Targets
Published on: February 2, 2024
Epigenetic reprogramming in cancer: From diagnosis to treatment
Pedro Mikael da Silva Costa1,2, Sarah Leyenne Alves Sales1,3, Daniel Pascoalino Pinheiro4
1Department of Physiology and Pharmacology, Drug Research and Development Center, Federal University of Ceará, Fortaleza, Ceará, Brazil.
Abstract:
Disruption of the epigenetic program of gene expression is a hallmark of cancer that initiates and propagates tumorigenesis. Altered DNA methylation, histone modifications and ncRNAs expression are a feature of cancer cells. The dynamic epigenetic changes during oncogenic transformation are related to tumor heterogeneity, unlimited self-renewal and multi-lineage differentiation. This stem cell-like state or the aberrant reprogramming of cancer stem cells is the major challenge in treatment and drug resistance. Given the reversible nature of epigenetic modifications, the ability to restore the cancer epigenome through the inhibition of the epigenetic modifiers is a promising therapy for cancer treatment, either as a monotherapy or in combination with other anticancer therapies, including immunotherapies. Herein, we highlighted the main epigenetic alterations, their potential as a biomarker for early diagnosis and the epigenetic therapies approved for cancer treatment.
Insights
Cancer epigenetics involves DNA methylation and histone changes, driving tumor growth and resistance. Epigenetic therapies offer a promising strategy to reverse these alterations for effective cancer treatment.
Area of Science:
- Oncology
- Epigenetics
- Molecular Biology
Background:
- Cancer is characterized by disruptions in the epigenetic program of gene expression.
- Altered DNA methylation, histone modifications, and non-coding RNA (ncRNA) expression are key features of cancer cells.
- Dynamic epigenetic changes contribute to tumor heterogeneity, self-renewal, and differentiation, leading to cancer stem cell phenotypes and treatment resistance.
Purpose of the Study:
- To highlight significant epigenetic alterations in cancer.
- To explore the potential of epigenetic modifications as biomarkers for early cancer diagnosis.
- To review approved epigenetic therapies for cancer treatment.
Main Methods:
- Review of existing literature on epigenetic alterations in cancer.
- Analysis of the role of epigenetic changes in tumorigenesis and cancer stem cell biology.
- Compilation of information on epigenetic therapies and their clinical applications.
Main Results:
- Epigenetic dysregulation, including DNA methylation and histone modifications, is central to cancer initiation and progression.
- Aberrant epigenetic reprogramming contributes to cancer stem cell characteristics, posing challenges in treatment and drug resistance.
- Epigenetic modifications show potential as biomarkers for early cancer detection.
Conclusions:
- Epigenetic alterations are fundamental to cancer development and progression.
- Targeting epigenetic modifiers offers a promising therapeutic avenue, with reversible modifications enabling potential restoration of the normal epigenome.
- Epigenetic therapies, used alone or in combination with other treatments like immunotherapy, represent a significant advancement in cancer treatment strategies.
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