Related Experiment Video
Updated: Mar 7, 2026
Author Spotlight: Exploring Salidroside's Molecular Mechanisms in Breast Cancer Treatment
Published on: June 9, 2023
3'-hydroxy-4'-methoxy-β-methyl-β-nitrostyrene inhibits tumorigenesis in colorectal cancer cells through ROS-mediated
Chun-Hao Tsai1,2, Amos C Hung1, Yuan-Yin Chen1
1Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
Abstract:
The β-nitrostyrene family has been shown to suppress cell proliferation and induce apoptosis in types of various cancers. However, the mechanisms underlying the anticancer effects of β-nitrostyrenes in colorectal cancer remain poorly understood. In this study, we synthesized a β-nitrostyrene derivative, CYT-Rx20 (3'-hydroxy-4'-methoxy-β-methyl-β-nitrostyrene), and investigated its anticancer activities in human colorectal cancer cells both in vitro and in vivo. Our findings showed that treatment with CYT-Rx20 reduced cell viability and induced DNA damage in colorectal cancer cells. In addition, CYT-Rx20 induced cell cycle arrest of colorectal cancer cells at the G2/M phase and upregulated the protein expression of phospho-ERK, cyclin B1, phospho-cdc2 (Tyr15), aurora A, and aurora B, while it downregulated the expression of cdc25A and cdc25C. Furthermore, we found that CYT-Rx20 caused accumulation of intracellular reactive oxygen species (ROS) and reduction of mitochondrial membrane potential. The effects of CYT-Rx20 on cell viability, DNA damage, and mitochondrial membrane potential were reversed by pretreatment with the thiol antioxidant N-acetyl-L-cysteine (NAC), suggesting that ROS-mediated DNA damage and mitochondrial dysregulation play a critical role in these events. Finally, the nude mice xenograft study showed that CYT-Rx20 significantly reduced tumor growth of implanted colorectal cancer cells accompanied by elevated protein expression of aurora A, aurora B, γH2AX, phosphor-ERK, and MDA in the tumor tissues. Taken together, these results suggest that CYT-Rx20 may potentially be developed as a novel β-nitrostyrene-based anticancer agent for colorectal cancer.
Insights
A new compound, CYT-Rx20, effectively combats colorectal cancer by inducing cell death and DNA damage. This β-nitrostyrene derivative shows promise as a novel anticancer agent, with effects mediated by reactive oxygen species and mitochondrial dysfunction.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- β-nitrostyrene derivatives exhibit anticancer properties, but their mechanisms in colorectal cancer are unclear.
- Colorectal cancer remains a significant global health challenge requiring novel therapeutic strategies.
Purpose of the Study:
- To synthesize and evaluate the anticancer potential of a novel β-nitrostyrene derivative, CYT-Rx20, in human colorectal cancer cells.
- To elucidate the molecular mechanisms underlying CYT-Rx20's anticancer effects, including its impact on cell cycle, apoptosis, and oxidative stress.
Main Methods:
- In vitro studies using human colorectal cancer cell lines to assess cell viability, DNA damage, cell cycle progression, and protein expression.
- In vivo evaluation in a nude mice xenograft model to determine tumor growth inhibition.
- Measurement of intracellular reactive oxygen species (ROS) and mitochondrial membrane potential.
Main Results:
- CYT-Rx20 significantly reduced colorectal cancer cell viability and induced DNA damage.
- CYT-Rx20 caused G2/M phase cell cycle arrest and modulated key cell cycle regulatory proteins (e.g., cyclin B1, cdc2, aurora A/B, cdc25A/C).
- ROS accumulation and reduced mitochondrial membrane potential were observed, with effects reversed by N-acetyl-L-cysteine (NAC), indicating ROS-mediated mechanisms.
Conclusions:
- CYT-Rx20 demonstrates potent anticancer activity against colorectal cancer through ROS-mediated DNA damage and mitochondrial dysfunction.
- CYT-Rx20 exhibits significant tumor growth inhibition in vivo, suggesting its potential as a novel therapeutic agent for colorectal cancer.
More Related Videos
Related Concept Videos
01:25Mutagenicity and Carcinogenicity
01:11Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
01:46Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...