Panyam, J., Dali, M.M., Sahoo, S.K., Ma, W., Chakravarthi, S.S., Amidon, G.L., Levy, R.J. and Labhasetwar, V. (2003) Polymer degradation and in vitro release of a model protein from poly(d,l-lactide-co-glycolide) nanoand microparticles. Journal of Controlled Release, 19, 173-187. doi:10.1016/S0168-3659(03)00328-6

has been cited by the following article:

• TITLE: Controlled release of cisplatin and cancer cell apoptosis with cisplatin encapsulated poly(lactic-co-glycolic acid) nanoparticles

  AUTHORS: A. Champa Jayasuriya, Anthony J. Darr

  KEYWORDS: Nanoparticles, Cisplatin; Poly(Lactic-co-Glycolic Acid); Controlled Release; Cancer; Apopotosis

  JOURNAL NAME: Journal of Biomedical Science and Engineering, Vol.6 No.5, May 27, 2013

  ABSTRACT: The goal of the present study is to utilize cis-diamminedichloroplatinum (cisplatin) loaded polymer nanoparticles (NPs) to give a controlled, extended, and local drug therapy for the treatment of cancer. We have used biodegradable and biocompatible poly(lactic-co-glycolic acid) (PLGA) to prepare the NPs by adjusting the double emulsion technique using poly(vinylalcohol) as a surface active agent. The PLGA NPs were characterized for particle size and shape, controlled release of cisplatin, and degradation. Cisplatin solubility in deionized water was increased up to 4 mg/mL by simply changing the solution parameters. Cisplatin encapsulated NPs were incubated in phosphate buffered saline (PBS) at 37?C to study the release kinetics of cisplatin. Cisplatin was released in a sustained manner with less than 20% release during a 3-day period followed by 50% release during a 21-day period. A degradation study of PLGA NPs demonstrated the loss of spherical shape during a 21-day period. We also examined the cisplatin sensitive A2780 cell apoptosis when cells were incubated with cisplatin encapsulated PLGA NPs. A large number of cell apoptosis occurred as a result of cisplatin release from the PLGA NPs. These results suggest that cisplatin encapsulated PLGA NPs can be used to treat the cancer cells by injecting them into a localized site minimizing the side effects.