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Cytotoxic Effect of Palladium Nanoparticles Synthesized From Syzygium aromaticum Aqueous Extracts and Induction of Apoptosis in Cervical Carcinoma

Cytotoxic Effect of Palladium Nanoparticles Synthesized From Syzygium aromaticum Aqueous Extracts... Among the various nanoparticles explored for diverse biological applications, palladium nanoparticles still remain far too behind in the field of cancer therapeutics. Nanoparticles synthesized by chemical methods aggregate in physiological conditions hindering their biomedical applications. Therefore, in the present study, a plant mediated green synthesis approach for palladium nanoparticle preparation from Syzygium aromaticum was reported and the biocompatibility and anticancer activity of the eco-friendly synthesized palladium nanoparticles against human cervical carcinoma was evaluated. The as-synthesized palladium nanoparticles were characterized by various analytical techniques such as, UV–vis spectroscopy, transmission electron microscope, dynamic light scattering, zeta potential, energy dispersive X-ray spectroscopy, X-ray diffraction and fourier transform infrared spectroscopy. The biocompatibility of palladium nanoparticles were verified by incubating with RBCs and cytotoxic studies revealed a dose dependent cytotoxic effect with half maximal inhibitory concentration values of 15 ± 0.5 µg/mL against HeLa cells at 48 h incubation. Further, the induction of apoptosis was evidenced by fluorescence microscopic study. Semi-quantitative RT-PCR analysis evidenced the activation of cytochrome c and caspase 3 and down regulation of Bcl-2 and Bcl-xL. In vivo antitumor studies showed significant suppression of tumor growth against HeLa tumor xenograft models. The results suggest that palladium nanoparticles can be synthesized using clove buds; they are biocompatible possessing significant anticancer activity against human cervical carcinoma, indicating the great potential of palladium nanoparticles in relevant biomedical applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings of the National Academy of Sciences, India Section B: Biological Sciences Springer Journals

Cytotoxic Effect of Palladium Nanoparticles Synthesized From Syzygium aromaticum Aqueous Extracts and Induction of Apoptosis in Cervical Carcinoma

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References (43)

Publisher
Springer Journals
Copyright
Copyright © 2015 by The National Academy of Sciences, India
Subject
Life Sciences; Life Sciences, general; Behavioral Sciences; Plant Biochemistry; Nucleic Acid Chemistry
ISSN
0369-8211
eISSN
2250-1746
DOI
10.1007/s40011-015-0678-7
Publisher site
See Article on Publisher Site

Abstract

Among the various nanoparticles explored for diverse biological applications, palladium nanoparticles still remain far too behind in the field of cancer therapeutics. Nanoparticles synthesized by chemical methods aggregate in physiological conditions hindering their biomedical applications. Therefore, in the present study, a plant mediated green synthesis approach for palladium nanoparticle preparation from Syzygium aromaticum was reported and the biocompatibility and anticancer activity of the eco-friendly synthesized palladium nanoparticles against human cervical carcinoma was evaluated. The as-synthesized palladium nanoparticles were characterized by various analytical techniques such as, UV–vis spectroscopy, transmission electron microscope, dynamic light scattering, zeta potential, energy dispersive X-ray spectroscopy, X-ray diffraction and fourier transform infrared spectroscopy. The biocompatibility of palladium nanoparticles were verified by incubating with RBCs and cytotoxic studies revealed a dose dependent cytotoxic effect with half maximal inhibitory concentration values of 15 ± 0.5 µg/mL against HeLa cells at 48 h incubation. Further, the induction of apoptosis was evidenced by fluorescence microscopic study. Semi-quantitative RT-PCR analysis evidenced the activation of cytochrome c and caspase 3 and down regulation of Bcl-2 and Bcl-xL. In vivo antitumor studies showed significant suppression of tumor growth against HeLa tumor xenograft models. The results suggest that palladium nanoparticles can be synthesized using clove buds; they are biocompatible possessing significant anticancer activity against human cervical carcinoma, indicating the great potential of palladium nanoparticles in relevant biomedical applications.

Journal

Proceedings of the National Academy of Sciences, India Section B: Biological SciencesSpringer Journals

Published: Dec 17, 2015

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