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Polyethylenimine-functionalized silver nanoparticle-based co-delivery of paclitaxel to induce HepG2 cell apoptosis

Authors Li Y, Guo M, Lin Z, Zhao M, Xiao M, Wang C, Xu T, Chen T, Zhu B

Received 18 September 2016

Accepted for publication 16 November 2016

Published 8 December 2016 Volume 2016:11 Pages 6693—6702


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Dr Linlin Sun

Yinghua Li,1,* Min Guo,1,* Zhengfang Lin,1 Mingqi Zhao,1 Misi Xiao,1 Changbing Wang,1 Tiantian Xu,1 Tianfeng Chen,2 Bing Zhu1

1Center Laboratory, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, 2Department of Chemistry, Jinan University, Guangzhou, People’s Republic of China

*These authors contributed equally to this work

Hepatocarcinoma is the third leading cause of cancer-related deaths around the world. Recently, a novel emerging nanosystem as anticancer therapeutic agents with intrinsic therapeutic properties has been widely used in various medical applications. In this study, surface decoration of functionalized silver nanoparticles (AgNPs) by polyethylenimine (PEI) and paclitaxel (PTX) was synthesized. The purpose of this study was to evaluate the effect of Ag@PEI@PTX on cytotoxic and anticancer mechanism on HepG2 cells. The transmission electron microscope image and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay showed that Ag@PEI@PTX had satisfactory size distribution and high stability and selectivity between cancer and normal cells. Ag@PEI@PTX-induced HepG2 cell apoptosis was confirmed by accumulation of the sub-G1 cells population, translocation of phosphatidylserine, depletion of mitochondrial membrane potential, DNA fragmentation, caspase-3 activation, and poly(ADP-ribose) polymerase cleavage. Furthermore, Ag@PEI@PTX enhanced cytotoxic effects on HepG2 cells and triggered intracellular reactive oxygen species; the signaling pathways of AKT, p53, and MAPK were activated to advance cell apoptosis. In conclusion, the results reveal that Ag@PEI@PTX may provide useful information on Ag@PEI@PTX-induced HepG2 cell apoptosis and as appropriate candidate for chemotherapy of cancer.

Keywords: silver nanoparticles, polyethylenimine, paclitaxel, reactive oxygen species, apoptosis

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