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Published on: July 21, 2018
Enzastaurin, a protein kinase Cbeta- selective inhibitor, and its potential application as an anticancer agent in
Roy S Herbst1, Yun Oh, Asavari Wagle
1M. D. Anderson Cancer Center, Houston, University of Texas, Houston, TX 77030-4009, USA. rherbst@mdanderson.org
Abstract:
Enzastaurin, an oral serine/threonine kinase inhibitor, suppresses signaling through protein kinase C (PKC)-beta and the phosphatidylinositol 3-kinase/AKT pathway to induce tumor cell apoptosis, reduce proliferation, and suppress tumor-induced angiogenesis. In contrast to previous PKC inhibitors, enzastaurin is very well tolerated with a favorable safety profile, allowing it to be dosed for extended durations. In the present review, we summarize the rationale for targeting PKC in cancer, the preclinical experience of enzastaurin, and the clinical findings of the current phase I and II studies. Based on the combined information, we present the rationale for its future assessment in the treatment of lung cancer.
Insights
Enzastaurin, a novel protein kinase C (PKC) inhibitor, shows promise in cancer treatment by inducing apoptosis and reducing tumor growth. Its favorable safety profile supports extended use, particularly for lung cancer.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Protein Kinase C (PKC) signaling pathways are implicated in cancer development.
- Targeting PKC offers a potential therapeutic strategy for various malignancies.
- Enzastaurin is an oral serine/threonine kinase inhibitor designed to target PKC-beta.
Purpose of the Study:
- To review the rationale for targeting PKC in cancer.
- To summarize preclinical data and clinical findings of enzastaurin.
- To present the case for enzastaurin's evaluation in lung cancer treatment.
Main Methods:
- Review of preclinical studies investigating enzastaurin's efficacy.
- Analysis of Phase I and II clinical trial data for safety and preliminary efficacy.
- Summary of enzastaurin's mechanism of action, including suppression of PKC-beta and PI3K/AKT pathways.
Main Results:
- Enzastaurin effectively suppresses tumor cell apoptosis, proliferation, and angiogenesis.
- Enzastaurin demonstrates a favorable safety profile, allowing for prolonged administration.
- Preclinical and early clinical data support enzastaurin's therapeutic potential.
Conclusions:
- Enzastaurin's mechanism of action and safety profile warrant further investigation.
- The drug's ability to target key cancer pathways makes it a candidate for lung cancer therapy.
- Future clinical trials are proposed to assess enzastaurin's efficacy in lung cancer patients.
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