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Updated: Aug 6, 2026

Inducible and Reversible Dominant-negative (DN) Protein Inhibition
Published on: January 7, 2019
Inhibition of ras oncogene: a novel approach to antineoplastic therapy
O G Scharovsky1, V R Rozados, S I Gervasoni
1Instituto de Genética Experimental, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Argentina. ogs@citynet.net.ar
Abstract:
The most frequently detected oncogene alterations, both in animal and human cancers, are the mutations in the ras oncogene family. These oncogenes are mutated or overexpressed in many human tumors, with a high incidence in tumors of the pancreas, thyroid, colon, lung and certain types of leukemia. Ras is a small guanine nucleotide binding protein that transduces biological information from the cell surface to cytoplasmic components within cells. The signal is transduced to the cell nucleus through second messengers, and it ultimately induces cell division. Oncogenic forms of p21(ras) lead to unregulated, sustained signaling through downstream effectors. The ras family of oncogenes is involved in the development of both primary tumors and metastases making it a good therapeutic target. Several therapeutic approaches to cancer have been developed pointing to reducing the altered gene product or to eliminating its biological function: (1) gene therapy with ribozymes, which are able to break down specific RNA sequences, or with antisense oligonucleotides, (2) immunotherapy through passive or active immunization protocols, and (3) inhibition of p21(ras) farnesylation either by inhibition of farnesyl transferase or synthesis inhibition of farnesyl moieties.
Insights
Ras oncogene mutations drive many cancers, including pancreatic, lung, and leukemia. Targeting these mutations offers promising therapeutic strategies for cancer treatment and metastasis prevention.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Ras oncogene family mutations are frequent in human and animal cancers.
- Ras proteins are key in cell signaling, regulating cell division.
- Altered Ras signaling contributes to tumor development and metastasis.
Purpose of the Study:
- To review the role of Ras oncogenes in cancer.
- To explore therapeutic strategies targeting Ras.
Main Methods:
- Review of literature on Ras oncogene alterations and cancer.
- Analysis of current and emerging therapeutic approaches.
Main Results:
- Ras mutations are highly prevalent in pancreatic, thyroid, colon, lung cancers, and leukemia.
- Oncogenic Ras leads to uncontrolled cell signaling and proliferation.
- Ras pathway is implicated in both primary tumor formation and metastasis.
Conclusions:
- The Ras oncogene family is a significant target for cancer therapy.
- Therapeutic strategies include gene therapy, immunotherapy, and farnesylation inhibition.
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