Abstract
Osteosarcoma is a high-class malignant bone cancer with a less than 20% five-year survival rate due to its early metastasis potential. There is an urgent need to develop a versatile and innoxious drug to treat metastatic osteosarcoma. Curcumin (Cur) has shown its potential for the treatment of many cancers; however, the clinical implication of native curcumin is severely hindered by its intrinsic property. In this study, a mixed system of monomethoxy (polyethylene glycol)-poly(d, l-lactide-co-glycolide)/poly(ε-caprolactone) (mPEG-PLGA/PCL) was used to build a formulation of curcumin-encapsulated nanoparticles (Cur-NPs), which significantly improved the solubility, stability and cellular uptake of curcumin. Moreover, the Cur-NPs were superior to free curcumin in the matter of inhibition on the proliferation, migration and invasion of osteosarcoma 143B cells. It was found that both free curcumin and Cur-NPs could decrease the expressions of c-Myc and MMP7 in the level of mRNA and protein, which explained why free curcumin and Cur-NPs could inhibit the proliferation and invasion of metastatic osteosarcoma 143B cells. The Cur-NPs provided a promising strategy for metastatic osteosarcoma treatment.
摘要
骨肉瘤是一种高转移性的恶性肿瘤, 5年生存率不到20%.姜黄素(Cur)具有治疗癌症的潜在功效, 但其自身水溶性和稳定性差等性质限制了其临床使用. 本文用聚乙二醇-聚(D, L-丙交酷-乙交酷)/聚(ε-已内酷)负载姜黄素形成纳米粒子, 可以改善姜黄素的水溶性、 稳定性和细胞内吞. 与非负载的姜黄素相比, 姜黄素纳米粒子在抑制骨肉瘤细胞增殖和迁移方面显示出明显的优势. 研究结果表明, 姜黄素和其纳米粒子均可降低c-Myc和MMP7表达, 这可以很好地解释姜黄素纳米粒子抑制骨肉瘤细胞的机制.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (51520105004, 51673189, 51390484, 51403204, 51673185, 51473029 and 51503202), Science and Technology Service Network Initiative (KFJ-SW-STS-166), and the Chinese Academy of Sciences Youth Innovation Promotion Association.
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Guanyi Wang was born in 1990, a PhD candidate in Jilin university. Currently she is a joint PhD student in Professor Zhaohui Tang and Xuesi Chen’s group. She is majoring in biochemistry and molecular biology. Her research interests mainly focus on anti-tumor therapeutics.
Zhaohui Tang was born in 1976. Currently he is a professor at the Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. His research interests include fabrication of nano-medicine, anti-tumor therapeutics and industrial development of biodegradable medical polymer materials.
Xueqi Fu was born in 1960. Currently he is a professor at Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University. His research interests focus on the cell signal transduction and anti-tumor drug screening.
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Wang, G., Song, W., Shen, N. et al. Curcumin-encapsulated polymeric nanoparticles for metastatic osteosarcoma cells treatment. Sci. China Mater. 60, 995–1007 (2017). https://doi.org/10.1007/s40843-017-9107-x
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DOI: https://doi.org/10.1007/s40843-017-9107-x