Tuesday, June 21, 2016

PLCL from PolySciTech used as part of nanoparticle carrier for SN-38 and investigated for chemotherapy

PolySciTech division of Akina, Inc. (www.polyscitech.com) provides a wide array of biodegradable polymers including poly(lactide-co-caprolactone) PLCL. Recently, PLCL from Akina, Inc. (PolyVivo AP103) was used to generate a poloxamer-PLCL nanoparticle which was loaded with the novel antineoplastic drug SN-38 which acts to prevent cancer from growing new cells. These nanoparticles were then investigated to determine their applicability to biological systems. This research holds promise for development of novel chemotherapeutic strategies to treat cancer. Read more: Koliqi, Rozafa, Simona Dimchevska, Nikola Geskovski, Gjorgji PetruĆĄevski, Marina Chacorovska, Biljana Pejova, Delyan R Hristov, Sonja Ugarkovic, and Katerina Goracinova. "PEO-PPO-PEO/Poly (DL-lactide-co-caprolactone) Nanoparticles as Carriers for SN-38: Design, Optimization and Nano-Bio Interface Interactions." Current drug delivery 13, no. 3 (2016): 339-352. http://www.ingentaconnect.com/contentone/ben/cdd/2016/00000013/00000003/art00008

“Abstract: Encapsulation of extremely hydrophobic substances such as SN-38 into nanoparticles, is a promising approach to solve the solubility issue and enable drug administration. Moreover, nanocarriers’ tumor homing behavior, targeted and controlled release at the site of action will optimize therapeutic potency and decrease toxicity of the incorporated drug substance. However, the enormous drug hydrophobicity might limit the capacity for encapsulation as the premature drug precipitation will contribute to fast free drug crystal growth, low drug incorporation and huge waste of the active material. In this article we defined the optimal region for manufacturing of SN-38 loaded PEO-PPO-PEO/P(DL)LCL nanoparticles (NPs) with high efficacy of encapsulation, suitable particle size and different surface properties, using D-optimal design and nanoprecipitation as production method. Further we made an approach to investigate the interactions with macromolecules at the nano-bio interface which are predetermined by the physico-chemical and surface properties of the NPs, and are important determinants for the biological identity of the nanoparticles, the potential for evasion of the physiological barriers and the efficacy of localization at the site of action. Here we present in depth analysis of the behavior of two types of nanoparticles with different surface properties through structured protein interaction and bioreactivity experiments in order to presuppose NP performance and toxicological profile in biological environment. Keywords: D-optimal design; P(DL)LCL; PEO-PPO-PEO; Polymeric nanoparticles; SN-38; nano-bio interface; protein corona” 
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