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Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
Published on: September 29, 2016
The development of protein farnesyltransferase inhibitors as signaling-based anticancer agents
Junko Ohkanda1, Michelle A Blaskovich, Saïd M Sebti
1Drug Discovery Program, H. Lee Moffitt Cancer Center & Research Institute, Departments of Oncology and Biochemistry & Molecular Biology, University of South Florida, Tampa, FL, USA.
Abstract:
The presence of mutated Ras in more that 30% of human cancers has spurred interest in the identification of molecules that can block its uncontrolled signaling function. A particular focus in recent years has been a key posttranslational modification of Ras that places a farnesyl group on a cysteine residue near the C-terminus of the protein. In this chapter we describe recent progress in the design of inhibitors for the enzyme that catalyzes this step, protein farnesyltransferase, and show their potential for blocking oncogenic cell growth.
Insights
Researchers are developing new drugs to block the signaling of mutated Ras proteins, which are found in over 30% of human cancers. These inhibitors target protein farnesyltransferase, showing promise in halting cancer cell growth.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Mutated Ras proteins are implicated in over 30% of human cancers, driving uncontrolled cell signaling.
- Ras protein function is regulated by posttranslational modifications, including farnesylation.
- Targeting Ras signaling is a key strategy in cancer therapy.
Purpose of the Study:
- To review recent advancements in the design of inhibitors for protein farnesyltransferase.
- To evaluate the potential of these inhibitors in blocking oncogenic Ras signaling and cell growth.
Main Methods:
- Focus on the development of small molecule inhibitors targeting protein farnesyltransferase.
- Analysis of the mechanism of Ras protein farnesylation.
- Assessment of inhibitor efficacy in preclinical models (implied).
Main Results:
- Progress has been made in designing effective inhibitors of protein farnesyltransferase.
- These inhibitors demonstrate potential in blocking the oncogenic signaling pathways mediated by Ras.
- The farnesylation step is a viable target for anti-cancer drug development.
Conclusions:
- Inhibitors of protein farnesyltransferase represent a promising therapeutic approach for cancers driven by mutated Ras.
- Further development of these inhibitors could lead to novel treatments for various human malignancies.
- Targeting protein posttranslational modifications offers a strategic avenue for cancer intervention.
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