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. 2017 Aug;106(8):2053-2059.
doi: 10.1016/j.xphs.2017.04.049. Epub 2017 May 5.

Preparation of Calcium Phosphate/pDNA Nanoparticles for Exogenous Gene Delivery by Co-Precipitation Method: Optimization of Formulation Variables Using Box-Behnken Design

Wenpan Li  1 , Xirui Zhang  1 , Shasha Jing  1 , Xiu Xin  1 , Kang Chen  1 , Dawei Chen  1 , Haiyang Hu  2
Affiliations

Preparation of Calcium Phosphate/pDNA Nanoparticles for Exogenous Gene Delivery by Co-Precipitation Method: Optimization of Formulation Variables Using Box-Behnken Design

Wenpan Li et al. J Pharm Sci. 2017 Aug.

Abstract

This research focused on optimizing the preparations of pDNA-loaded calcium phosphate (CaP) nanoparticles by employing a 3-factor, 3-level Box-Behnken design. Results indicated that a Ca/P ratio of 189.56, pH of 7.82, and a stirring speed of 528.83 rpm were the optimum conditions for preparation of the nanoparticles. The size of the optimized CaP/pDNA nanoparticles was 61.3 ± 3.64 nm, with a polydispersity index of 0.341 and an encapsulation efficiency of up to 92.11%. The optimized CaP/pDNA nanoparticles had high transfection efficiency and demonstrated good biocompatibility in vitro. Therefore, the Box-Behnken design method was successful in providing desirable CaP nanoparticle pDNA delivery systems by optimizing the experimental factors.

Keywords: Box-Behnken design; CaP nanoparticles; pDNA; transfection and expression.

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