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Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
Published on: June 23, 2019
Design, synthesis, and biological activities of 1-aryl-(3-(2-styryl)phenyl)prop-2-en-1-ones
Soon Young Shin1, Junho Lee2, Jihyun Park2
1Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea.
Abstract:
A moderate elevation in reactive oxygen species (ROS) levels can generally be controlled in normal cells, but may lead to death of cancer cells as the ROS level in cancer cells is already elevated. Therefore, a ROS-generating compound can act as a selective chemotherapeutic agent for cancer cells that does not affect normal cells. In our previous study, a compound containing a Michael acceptor was selectively cytotoxic to cancer cells without affecting normal cells; therefore, we designed and synthesized 26 compounds containing a Michael acceptor. Their cytotoxicities against HCT116 human colon cancer cell lines were measured by using a clonogenic long-term survival assay. To derive the structural conditions required to obtain stronger cytotoxicity against cancer cells, the relationships between the half-maximal cell growth inhibitory concentration values of the synthesized compounds and their physicochemical properties were evaluated by Comparative Molecular Field Analysis and Comparative Molecular Similarity Indices Analysis. It was confirmed that the compound with the best half-maximal cell growth inhibitory concentration triggered apoptosis through ROS generation, which then led to stimulation of the caspase pathway.
Insights
New chemotherapeutic agents selectively kill cancer cells by generating reactive oxygen species (ROS). This study designed novel compounds that induce cancer cell death via ROS generation and apoptosis, sparing normal cells.
Area of Science:
- Oncology
- Medicinal Chemistry
- Biochemistry
Background:
- Cancer cells exhibit elevated reactive oxygen species (ROS) levels compared to normal cells.
- Targeting ROS can lead to selective cancer cell death without harming healthy cells.
- Previous research identified Michael acceptor compounds with selective cytotoxicity against cancer cells.
Purpose of the Study:
- To design and synthesize novel compounds containing a Michael acceptor.
- To evaluate the cytotoxic effects of these compounds on HCT116 human colon cancer cell lines.
- To determine the structure-activity relationships for enhanced anticancer efficacy.
Main Methods:
- Synthesis of 26 novel compounds featuring a Michael acceptor moiety.
- Assessment of compound cytotoxicity using a clonogenic long-term survival assay.
- Quantitative structure-activity relationship analysis using Comparative Molecular Field Analysis and Comparative Molecular Similarity Indices Analysis.
Main Results:
- Cytotoxicity of synthesized compounds against HCT116 cells was evaluated.
- Structure-activity relationships were established to identify key features for enhanced cytotoxicity.
- The most potent compound induced apoptosis via ROS generation, activating the caspase pathway.
Conclusions:
- Novel Michael acceptor compounds demonstrate selective cytotoxicity towards colon cancer cells.
- ROS generation and subsequent caspase pathway activation are key mechanisms of action.
- These findings support the development of ROS-generating agents as targeted cancer chemotherapeutics.
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