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Updated: Dec 7, 2025

Integration of Bioinformatics Approaches and Experimental Validations to Understand the Role of Notch Signaling in Ovarian Cancer
Published on: January 12, 2020
Targeting Notch Trafficking and Processing in Cancers
Luca Pagliaro1, Claudia Sorrentino1, Giovanni Roti1
1Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy.
Abstract:
The Notch family comprises a group of four ligand-dependent receptors that control evolutionarily conserved developmental and homeostatic processes and transmit signals to the microenvironment. NOTCH undergoes remodeling, maturation, and trafficking in a series of post-translational events, including glycosylation, ubiquitination, and endocytosis. The regulatory modifications occurring in the endoplasmic reticulum/Golgi precede the intramembrane γ-secretase proteolysis and the transfer of active NOTCH to the nucleus. Hence, NOTCH proteins coexist in different subcellular compartments and undergo continuous relocation. Various factors, including ion concentration, enzymatic activity, and co-regulatory elements control Notch trafficking. Interfering with these regulatory mechanisms represents an innovative therapeutic way to bar oncogenic Notch signaling. In this review, we briefly summarize the role of Notch signaling in cancer and describe the protein modifications required for NOTCH to relocate across different subcellular compartments. We focus on the functional relationship between these modifications and the corresponding therapeutic options, and our findings could support the development of trafficking modulators as a potential alternative to the well-known γ-secretase inhibitors.
Insights
This review explores how Notch protein modifications regulate its movement within cells. Understanding these trafficking mechanisms offers new therapeutic strategies for cancer, potentially complementing existing treatments.
Area of Science:
- Cellular Biology
- Molecular Biology
- Cancer Research
Background:
- The Notch signaling pathway is crucial for development and homeostasis, involving four ligand-dependent receptors.
- Notch proteins undergo extensive post-translational modifications (glycosylation, ubiquitination, endocytosis) and trafficking.
- These modifications occur in the endoplasmic reticulum/Golgi, preceding proteolysis and nuclear translocation.
Purpose of the Study:
- To review the role of Notch signaling in cancer.
- To describe Notch protein modifications essential for subcellular relocation.
- To explore the therapeutic potential of targeting Notch trafficking.
Main Methods:
- Literature review focusing on Notch signaling pathways.
- Analysis of post-translational modifications and their impact on Notch protein trafficking.
- Examination of therapeutic strategies targeting Notch signaling.
Main Results:
- Notch protein trafficking is a complex process involving multiple subcellular compartments.
- Specific modifications dictate Notch protein movement and localization.
- Interfering with Notch trafficking presents a novel therapeutic avenue.
Conclusions:
- Notch protein modifications are critical for its signaling functions and cellular localization.
- Targeting Notch trafficking pathways offers a promising alternative to traditional therapies like gamma-secretase inhibitors.
- Further research into trafficking modulators could lead to innovative cancer treatments.
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