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Preclinical Assessment of the Bioactivity of the Anticancer Coumarin OT48 by Spheroids, Colony Formation Assays, and Zebrafish Xenografts
Published on: June 26, 2018
Nano-Encapsulated Coumarin Derivative, CS-QM2 Inhibits Neoplasm Growth: Experimented in Zebrafish Model
S Madesh1, Raghul Murugan2, Avra Sau1
1Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
Abstract:
Cancer remains a significant global health challenge with limited therapeutic success, prompting the need for innovative treatment strategies. This study investigates the anticancer potential of nano-encapsulated metal derivatives (CS-QM2) using a zebrafish model with chemically induced cellular neoplasia. Characterization of CS-QM2 nanoparticles revealed successful synthesis with a high entrapment efficiency and enhanced drug release under acidic conditions. Zebrafish embryos exposed to 7,12-Dimethylbenz[a]anthracene (DMBA) exhibited significant malformations, macrophage accumulation, and abnormal tissue growth, which were markedly reduced by CS-QM2 treatment. CS-QM2 significantly increases intracellular ROS, resulting in higher LPO and induces apoptosis in neoplasm tissues. Furthermore, CS-QM2 treatment alters the tumor microenvironment, reducing macrophage accumulation by decreasing neutral lipid droplets, disrupting TAM metabolic support and limiting their protumorigenic activities. Biochemical assays demonstrated restored activities of antioxidant enzymes SOD, CAT, and GSH. Gene expression analysis showed upregulation of apoptosis and tumor suppressor genes (cas3, p53) and downregulation of inflammatory genes (cox-2, nf-kb). Histological assessment and SEM analysis confirmed reduced neoplasm occurrence and tissue abnormalities. These findings suggest that CS-QM2 nanoparticles effectively inhibit neoplasm growth and modulate the tumor microenvironment through oxidative stress induction and gene expression regulation.
Insights
Nano-encapsulated metal derivatives (CS-QM2) show promise as an innovative cancer therapy. This study demonstrates CS-QM2 effectively reduces neoplasia in a zebrafish model by inducing oxidative stress and regulating gene expression.
Area of Science:
- Nanotechnology
- Oncology
- Zebrafish models
Background:
- Cancer presents a significant global health challenge with limited treatment options.
- Innovative therapeutic strategies are crucial for effective cancer management.
- Nanoparticle-based drug delivery offers potential for enhanced cancer treatment.
Purpose of the Study:
- To investigate the anticancer potential of novel nano-encapsulated metal derivatives (CS-QM2).
- To evaluate the efficacy of CS-QM2 in a zebrafish model of chemically induced neoplasia.
- To elucidate the mechanisms underlying CS-QM2's anti-neoplastic effects.
Main Methods:
- Characterization of CS-QM2 nanoparticles for synthesis, entrapment efficiency, and drug release kinetics.
- Induction of neoplasia in zebrafish embryos using 7,12-Dimethylbenz[a]anthracene (DMBA).
- Assessment of CS-QM2 treatment effects on zebrafish, including histological analysis, biochemical assays, and gene expression profiling.
Main Results:
- CS-QM2 nanoparticles were successfully synthesized with high entrapment efficiency and pH-dependent drug release.
- CS-QM2 treatment significantly reduced DMBA-induced malformations, macrophage accumulation, and abnormal tissue growth in zebrafish.
- CS-QM2 induced intracellular reactive oxygen species (ROS) and lipid peroxidation (LPO), promoting apoptosis in neoplasm tissues.
- CS-QM2 modulated the tumor microenvironment by reducing macrophage infiltration and disrupting tumor-associated macrophage (TAM) metabolic support.
- Biochemical assays revealed restoration of antioxidant enzyme activities (SOD, CAT, GSH) and altered gene expression (upregulation of apoptosis/tumor suppressor genes, downregulation of inflammatory genes).
Conclusions:
- CS-QM2 nanoparticles demonstrate significant anticancer potential by inhibiting neoplasm growth.
- CS-QM2 effectively modulates the tumor microenvironment, reducing protumorigenic macrophage activities.
- The therapeutic effects of CS-QM2 are mediated through oxidative stress induction and regulation of key apoptosis and inflammatory genes.
