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Published on: January 29, 2019
RAS: target for cancer therapy
Nandita Saxena1, Sitanshu Sekhar Lahiri, Shashank Hambarde
1Department of Radiation Biology and Radioprotectors, Institute of Nuclear Medicine and Allied Sciences, Delhi, India.
Abstract:
The RAS protein controls signaling pathway are major player in cell growth, its regulation and malignant transformation. Any activation in RAS brings alteration in upstream or downstream signaling component. Activating mutation in RAS is found in approximately 30% of human cancer. RAS plays essential role in tumor maintenance and is therefore an appropriate target for anticancer therapy. Among the anti-RAS strategies that are under evaluation in the clinic are pharmacologic inhibitors designed to prevent: (1) association with the plasma membrane (prenylation and post prenylation inhibitors). (2) Downstream signaling (kinase inhibitor), (3) upstream pathway (kinase inhibitor and monoclonal antibody), (4) Expression of RAS or other component of pathway (siRNA and antisense oligonucleotide). Several of these new therapeutic agents are showing promising result in the clinic and many more are on the way. Here, we review the current status and new hopes for targeting RAS as an anticancer drug.
Insights
RAS proteins are crucial for cell growth and cancer development. Targeting RAS through various inhibitors shows promise as an effective anticancer therapy, with several agents progressing in clinical trials.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- RAS proteins are key regulators of cell signaling pathways involved in cell growth, proliferation, and differentiation.
- Aberrant RAS signaling, often due to activating mutations found in ~30% of human cancers, drives malignant transformation and tumor maintenance.
- RAS proteins are therefore considered a critical target for novel anticancer therapies.
Purpose of the Study:
- To review the current therapeutic strategies targeting RAS proteins for cancer treatment.
- To discuss the different classes of anti-RAS agents currently under clinical evaluation.
- To highlight the potential and future directions for RAS-targeted anticancer drug development.
Main Methods:
- Review of existing literature on RAS signaling and targeted therapies.
- Analysis of pharmacologic inhibitors targeting different aspects of RAS pathway.
- Evaluation of clinical trial data for anti-RAS agents.
Main Results:
- Activating RAS mutations are prevalent in human cancers, underscoring RAS as a viable therapeutic target.
- Multiple anti-RAS strategies are in clinical development, including inhibitors of membrane association, downstream signaling, upstream pathways, and RAS expression.
- Several novel therapeutic agents targeting RAS are demonstrating promising clinical outcomes.
Conclusions:
- Targeting RAS represents a significant and evolving strategy in cancer therapy.
- The diverse range of anti-RAS agents offers multiple avenues for intervention in various cancer types.
- Continued research and clinical evaluation of these agents hold substantial hope for improved cancer treatment outcomes.
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