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Measuring Nitrite and Nitrate, Metabolites in the Nitric Oxide Pathway, in Biological Materials using the Chemiluminescence Method
Published on: December 25, 2016
Novel anticancer paeonol derivatives possessing a nitric oxide donor moiety as TrxR inhibitors: design, synthesis,
Ce Shi1, Weisen Zhong2, Guowei Qiang2
1Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, 223800, China.
Abstract:
The tumor microenvironment (TME) plays a pivotal role in determining tumor progression and treatment response. Within the TME, redox processes mediated by reactive oxygen species (ROS) and nitric oxide (NO) are critically involved in regulating intercellular and intracellular signaling. In this study, we hypothesized that conjugating an NO-releasing moiety to paeonol derivatives and introducing a chalcone structure to enhance thioredoxin reductase (TrxR) targeting would yield compounds with potent anticancer activity. Accordingly, a series of mono- and di-substituted nitrate derivatives were synthesized. The inhibitory activities of all synthesized compounds were evaluated against BGC823, HCT116, Hep G2, and MCF-7 cell lines using the CCK-8 assay. Among the paeonol chalcone derivatives, compound 11f exhibited significant antiproliferative activity across the tested cancer cell panel. It was identified as a promising candidate with potent TrxR inhibitory activity (IC50 = 0.26 ± 0.17 μM in vitro; IC50 = 0.33 μM in vivo). Furthermore, compound 11f induced S-phase arrest and promoted apoptosis in MCF-7 cells. These findings underscore the enhanced anticancer potential of paeonol chalcone derivatives, attributable to the synergistic effects of NO and ROS.
Insights
Novel paeonol chalcone derivatives were synthesized to release nitric oxide (NO) and target thioredoxin reductase (TrxR). Compound 11f demonstrated significant anticancer activity by inducing apoptosis and cell cycle arrest.
Area of Science:
- Oncology
- Medicinal Chemistry
- Biochemistry
Background:
- The tumor microenvironment (TME) influences cancer progression and treatment outcomes.
- Redox processes involving reactive oxygen species (ROS) and nitric oxide (NO) regulate cell signaling within the TME.
Purpose of the Study:
- To synthesize novel paeonol chalcone derivatives with enhanced anticancer activity.
- To investigate the potential of these compounds to release NO and target thioredoxin reductase (TrxR).
Main Methods:
- Synthesis of mono- and di-substituted nitrate derivatives of paeonol chalcones.
- Antiproliferative activity evaluation using the CCK-8 assay across multiple cancer cell lines (BGC823, HCT116, Hep G2, MCF-7).
- Assessment of TrxR inhibitory activity, induction of S-phase arrest, and apoptosis in cancer cells.
Main Results:
- Compound 11f exhibited significant antiproliferative effects across tested cancer cell lines.
- Compound 11f demonstrated potent in vitro and in vivo thioredoxin reductase inhibition.
- Compound 11f induced S-phase arrest and promoted apoptosis in MCF-7 cells.
Conclusions:
- Paeonol chalcone derivatives show enhanced anticancer potential.
- The synergistic effects of NO release and TrxR inhibition contribute to the observed anticancer activity.
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