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Effect of magnetic nanoparticles on apoptosis and cell cycle induced by wogonin in Raji cells

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Author(s): Wang L | Zhang HJ | Chen BA | Xia GH | Wang S | Cheng J | Shao Z | Gao C | Bao W | Tian L | Ren YY | Xu PP | Cai XH | Liu R | Wang XM

Journal: International Journal of Nanomedicine
ISSN 1176-9114

Volume: 2012;
Issue: default;
Start page: 789;
Date: 2012;
Original page

ABSTRACT
Lei Wang1,2,*, Haijun Zhang1,2,*, Baoan Chen1,2, Guohua Xia1,2, Shuai Wang1,2, Jian Cheng1,2, Zeye Shao1,2, Chong Gao1,2, Wen Bao1,2, Liang Tian1,2, Yanyan Ren1,2, Peipei Xu1,2, Xiaohui Cai1,2, Ran Liu1,2, Xuemei Wang3 1Department of Hematology and Oncology, Zhongda Hospital, Medical School, 2Faculty of Oncology, Medical School, 3State Key Laboratory of Bioelectronics (Chien-Shiung Wu Laboratory), Southeast University, Nanjing, China*These authors contributed equally to this workAbstract: Traditional Chinese medicine is gradually becoming a new source of anticancer drugs. One such example is wogonin, which is cytotoxic to various cancer cell lines in vitro. However, due to its low water solubility, wogonin is restricted to clinical administration. Recently, the application of drug-coated magnetic nanoparticles (MNPs) to increase water solubility of the drug and to enhance its chemotherapeutic efficiency has attracted much attention. In this study, wogonin was conjugated with the drug delivery system of MNPs by mechanical absorption polymerization to fabricate wogonin-loaded MNPs. It was demonstrated that MNPs could strengthen wogonin-induced cell inhibition, apoptosis, and cell cycle arrest in Raji cells by methylthiazol tetrazolium assay, flow cytometer assay, and nuclear 4',6-diamidino-2-phenylindole staining. Furthermore, the molecular mechanisms of these phenomena were explored by western blot, in which the protein levels of caspase 8 and caspase 3 were increased significantly while those of survivin and cyclin E were decreased significantly in wogonin-MNPs group. These findings suggest that the combination of wogonin and MNPs provides a promising strategy for lymphoma therapy.Keywords: wogonin, magnetic nanoparticles, Raji cell, apoptosis, cell cycle, caspase 8, caspase 3, survivin, cyclin E
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