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Updated: May 4, 2026

Integration of Bioinformatics Approaches and Experimental Validations to Understand the Role of Notch Signaling in Ovarian Cancer
Published on: January 12, 2020
Role of Notch signalling pathway in cancer and its association with DNA methylation
Madhuri G S Aithal1, Narayanappa Rajeswari
1Department of Biotechnology, Dayananda Sagar College of Engineering, Bangalore 560 078, India. nraja7@gmail.com.
Abstract:
The Notch signalling pathway is an evolutionarily conserved cell signalling pathway involved in the development of organisms as diverse as humans and fruit flies. It plays a pivotal role in cell fate determination. Dysregulated Notch signalling is oncogenic, inhibits apoptosis and promotes cell survival. Abnormal Notch signalling is seen in many cancers like T-cell acute lymphoblastic leukaemia, acute myeloid leukaemia and cancers of the breast, cervix, colon, pancreas, skin and brain. Inhibition of Notch signalling leads to growth arrest and differentiation in those cells in which Notch pathway is activated and this represents a new target for cancer therapy. Cancer develops from genome defects, including both genetic and epigenetic alterations. Epigenetics deals with heritable changes in gene function that occur without a change in the DNA sequence. Among various epigenetic alterations such as acetylation, phosphorylation, ubiquitylation and sumoylation, promoter region methylation is considered as an important component in cancer development. Epigenetic alterations can be used as biomarkers in screening, detection, diagnosis, staging and risk stratification of various cancers. DNA methylation can be therapeutically reversed and demethylating drugs have proven to be promising in cancer treatment. This review focusses on the methylation status of genes in Notch signalling pathway from various cancers and how this epigenetic alteration can be used as a biomarker for cancer diagnosis and subsequent treatment.
Insights
Notch signalling pathway dysregulation drives cancer by affecting cell fate and survival. Promoter methylation of Notch genes acts as a cancer biomarker and potential therapeutic target.
Area of Science:
- Cellular biology
- Molecular oncology
- Epigenetics
Background:
- The Notch signalling pathway is crucial for cell fate determination and organism development.
- Dysregulation of Notch signalling is implicated in various cancers, promoting oncogenesis and cell survival.
- Epigenetic alterations, particularly DNA methylation, are key drivers of cancer development.
Purpose of the Study:
- To review the methylation status of Notch signalling pathway genes across diverse cancers.
- To explore the potential of Notch gene methylation as a biomarker for cancer diagnosis and risk stratification.
- To highlight the therapeutic implications of targeting epigenetic modifications in Notch-driven cancers.
Main Methods:
- Literature review focusing on methylation patterns in Notch pathway genes.
- Analysis of studies linking epigenetic alterations to cancer development and progression.
- Examination of the role of DNA methylation in Notch signalling and cancer biology.
Main Results:
- Promoter region methylation is a significant epigenetic alteration in Notch signalling pathway genes in various cancers.
- Aberrant methylation patterns correlate with cancer development and can serve as diagnostic and prognostic biomarkers.
- Targeting DNA methylation offers a promising therapeutic strategy for Notch-related malignancies.
Conclusions:
- Methylation status of Notch signalling pathway genes is a critical epigenetic factor in cancer.
- Notch gene methylation serves as a valuable biomarker for early cancer detection and patient stratification.
- Reversing aberrant DNA methylation presents a viable therapeutic avenue for cancers involving the Notch pathway.
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