Title:Mechanistic Study on Thymoquinone Conjugated ZnO Nanoparticles Mediated
Cytotoxicity and Anticancer Activity in Triple-Negative Breast Cancer Cells
Volume: 22
Issue: 2
Author(s): Sampath K. Banupriya, Krishnamoorthy Kavithaa, Arumugam Poornima and Sundaravadivelu Sumathi*
Affiliation:
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education
for Women, Coimbatore, TN, India
Abstract: Background: In the current era, the development of molecular techniques involves nano techniques,
and the synthesis of nanoparticles is considered the preferred field in nanotechnology.
Objective: The aim of the present work is to analyze the anticancer activity of the thymoquinone conjugated ZnO
nanoparticles and understand its mechanism of action in triple-negative breast cancer cell lines MDA-MB-231.
Methods: Zinc Oxide (ZnO) nanoparticles have extensive applications, and it was synthesized using a chemical
precipitation method. Thymoquinone (TQ) is the major bioactive component of the seeds of Nigella sativa.
Synthesized nanoparticles were characterized using various spectroscopic techniques. Thymoquinone-coated
nanoparticles were checked for their efficiency. The cytotoxicity of ZnO, TQ, and TQ conjugated ZnO
nanoparticles against MDA-MB-231. Colony-forming and cell migration assays were performed to measure the
proliferative competence of the breast cancer cells on exposure to nanoparticles. The mechanism of apoptosis
was probed by assessing MMP, interplay between ER stress and ROS.
Results: The results of the characterization techniques confirmed that the particles synthesized were ZnO and
TQ-ZnO nanoparticles. pH dependent release of the compound was observed. The anti-proliferative effect that
impairs the formation of the colony was found to be enhanced in cells exposed to combined treatment with the
nanoconjugate.
Conclusion: Hence, the TQ conjugated ZnO nanoparticles can act as an efficient carrier for drug delivery at the
target site in TNBC cells.