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Shalaby KS, Soliman ME, Bonacucina G, Cespi M, Palmieri GF, Sammour OA, El Shamy AA, Illum L, Casettari L. Nanoparticles Based on Linear and Star-Shaped Poly(Ethylene Glycol)-Poly(ε-Caprolactone) Copolymers for the Delivery of Antitubulin Drug. Pharm Res 2016; 33:2010-24. [PMID: 27177721 DOI: 10.1007/s11095-016-1939-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 04/29/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE Biodegradable polymeric nanoparticles of different architectures based on polyethylene glycol-co-poly(ε-caprolactone) block copolymers have been loaded with noscapine (NOS) to study their effect on its anticancer activity. It was intended to use solubility of NOS in an acidic environment and ability of the nanoparticles to passively target drugs into cancer tissue to modify the NOS pharmacokinetic properties and reduce the requirement for frequent injections. METHODS Linear and star-shaped copolymers were synthetized and used to formulate NOS loaded nanoparticles. Cytotoxicity was performed using a sulforhodamine B method on MCF-7 cells, while biocompatibility was determined on rats followed by hematological and histopathological investigations. RESULTS Formulae with the smallest particle sizes and adequate entrapment efficiency revealed that NOS loaded nanoparticles showed higher extent of release at pH 4.5. Colloidal stability suggested that nanoparticles would be stable in blood when injected into the systemic circulation. Loaded nanoparticles had IC50 values lower than free drug. Hematological and histopathological studies showed no difference between treated and control groups. Pharmacokinetic analysis revealed that formulation P1 had a prolonged half-life and better bioavailability compared to drug solution. CONCLUSIONS Formulation of NOS into biodegradable polymeric nanoparticles has increased its efficacy and residence on cancer cells while passively avoiding normal body tissues. Graphical Abstract ᅟ.
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Affiliation(s)
- Karim S Shalaby
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, 11566, Cairo, Egypt
| | - Mahmoud E Soliman
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, 11566, Cairo, Egypt
| | - Giulia Bonacucina
- School of Pharmacy, University of Camerino, Via S. Agostino 1, 62032, Camerino, MC, Italy
| | - Marco Cespi
- School of Pharmacy, University of Camerino, Via S. Agostino 1, 62032, Camerino, MC, Italy
| | - Giovanni F Palmieri
- School of Pharmacy, University of Camerino, Via S. Agostino 1, 62032, Camerino, MC, Italy
| | - Omaima A Sammour
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, 11566, Cairo, Egypt
| | - Abdelhameed A El Shamy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, 11566, Cairo, Egypt
| | - Lisbeth Illum
- IDentity, 19 Cavendish Crescent North, The Park, Nottingham, NG7 1BA, UK
| | - Luca Casettari
- Department of Biomolecular Sciences, School of Pharmacy, University of Urbino, Piazza Rinascimento, 6, 61029, Urbino, PU, Italy.
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Man DKW, Casettari L, Cespi M, Bonacucina G, Palmieri GF, Sze SCW, Leung GPH, Lam JKW, Kwok PCL. Oleanolic Acid Loaded PEGylated PLA and PLGA Nanoparticles with Enhanced Cytotoxic Activity against Cancer Cells. Mol Pharm 2015; 12:2112-25. [PMID: 25881668 DOI: 10.1021/acs.molpharmaceut.5b00085] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Oleanolic acid (OA) is a natural triterpenoid with anticancer properties, but its hydrophobic nature and poor aqueous solubility pose challenges in pharmaceutical formulation development. The present study aimed at developing OA-loaded mPEG-PLGA or mPEG-PLA nanoparticles (NPs) to improve the delivery of OA. The NPs were prepared by nanoprecipitation, and their physicochemical properties were characterized. The OA encapsulation efficiency of the NPs was between 40 and 75%. The size of the OA-loaded NPs was around 200-250 nm, which fell within the range required for tumor targeting by means of the enhanced permeability and retention (EPR) effect, and the negatively charged NPs remained physically stable for over 20 weeks with no aggregation observed. The OA-loaded NPs produced significant cytotoxic effects through apoptosis in cancer cell lines. Overall, the OA-loaded mPEG-PLGA NPs and mPEG-PLA NPs shared similar physicochemical properties. The former, especially the OA-loaded mPEG-P(D,L)LGA NPs, were more cytotoxic to cancer cells and therefore were more efficient for OA delivery.
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Affiliation(s)
| | - Luca Casettari
- ‡Department of Biomolecular Sciences, School of Pharmacy, University of Urbino, Piazza Rinascimento, 6, 61029 Urbino, Pesaro and Urbino, Italy
| | - Marco Cespi
- §School of Pharmacy, University of Camerino, via Sant'Agostino 1, 62032 Camerino, Macerata, Italy
| | - Giulia Bonacucina
- §School of Pharmacy, University of Camerino, via Sant'Agostino 1, 62032 Camerino, Macerata, Italy
| | | | - Stephen C W Sze
- ∥School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
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Perinelli DR, Bonacucina G, Cespi M, Naylor A, Whitaker M, Palmieri GF, Giorgioni G, Casettari L. Evaluation of P(L)LA-PEG-P(L)LA as processing aid for biodegradable particles from gas saturated solutions (PGSS) process. Int J Pharm 2014; 468:250-7. [PMID: 24746690 DOI: 10.1016/j.ijpharm.2014.04.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 12/01/2022]
Abstract
A series of biodegradable P(L)LA-PEG1.5 kDa-P(L)LA copolymers have been synthesized and compared as processing aid versus Poloxamer 407 (PEO-PPO-PEO), in the formulation of protein encapsulated microparticles, using supercritical carbon dioxide (scCO2). Bovine serum albumin (BSA) loaded microcarriers were prepared applying the particles from the gas saturated solutions (PGSS) technique using scCO2 and thus, avoiding the standard practice of organic solvent encapsulation. Four triblock copolymers were synthesized and characterized, particularly in terms of thermal properties and behaviour when exposed to scCO2. The effects of the inclusion of these copolymers in the formulation of poly(α-hydroxy acids) based microparticles - e.g. poly(D,L-lactic-co-glycolic acid) (PLGA) and poly(D,L-lactide) (PLA) - were analysed in terms of yield, particle size, morphology and drug release. The use of P(L)LA-PEG1.5 kDa-P(L)LA triblock copolymers were found to increase the yield of the PGSS-based process and to decrease the size of the microparticles produced, in comparison with the formulation containing the Poloxamer 407. Moreover the microparticles formulated with the triblock copolymers possessing the higher hydrophobic character were able to maintain a controlled drug release profile.
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Affiliation(s)
- D R Perinelli
- School of Pharmacy, University of Camerino, Via Sant'Agostino 1, Camerino, MC 62032, Italy
| | - G Bonacucina
- School of Pharmacy, University of Camerino, Via Sant'Agostino 1, Camerino, MC 62032, Italy
| | - M Cespi
- School of Pharmacy, University of Camerino, Via Sant'Agostino 1, Camerino, MC 62032, Italy
| | - A Naylor
- Critical Pharmaceuticals Limited BioCity, Pennyfoot Street, Nottingham NG1 1GF, United Kingdom
| | - M Whitaker
- Critical Pharmaceuticals Limited BioCity, Pennyfoot Street, Nottingham NG1 1GF, United Kingdom
| | - G F Palmieri
- School of Pharmacy, University of Camerino, Via Sant'Agostino 1, Camerino, MC 62032, Italy
| | - G Giorgioni
- School of Pharmacy, University of Camerino, Via Sant'Agostino 1, Camerino, MC 62032, Italy
| | - L Casettari
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, Urbino, PU 61029, Italy.
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