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Manning AN, Rowlands CE, Saindon H, Givens BE. Tuning the Emulsion Properties Influences the Size of Poly(Caprolactone) Particles for Drug Delivery Applications. AAPS J 2023; 25:100. [PMID: 37891411 DOI: 10.1208/s12248-023-00869-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Advances in drug delivery have been accelerated with the addition of polymeric drug carriers. Direct delivery to a target site is a promising step in developing effective drug and gene therapies to treat disease. The efficacy of these drug carriers heavily relies on cell uptake without compromising critical cellular processes that promote cell viability. Drug release from biodegradable polymers is mediated largely by polymer degradation, and therefore the rate of polymer degradation dictates the feasibility of drug delivery applications. Traditionally, poly(caprolactone) (PCL) has only been used in long-term biomedical applications because the degradation time is much slower than other polymers. However, the biocompatibility of this polymer and the potential for longer delivery windows renders it a promising polymer candidate for drug delivery. In this work, we outline sixteen emulsion solvent evaporation preparation methods for PCL nanoparticles and microparticles to develop particles between 300 nm and 1.7 μm and with zeta potentials of -1.8 mV. We further investigated particles in a size range suitable for systemic tumor delivery and inhaled aerosol delivery to determine cell biocompatibility with the polymer in lung adenocarcinoma, endometrial adenocarcinoma, and human embryonic kidney cells. We determined these particles aren't detrimental to cell viability below particle monolayer coverage atop cells and therefore these formulations hold promise for the next stage of development as sustained-release drug delivery carriers.
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Affiliation(s)
- Ashbey N Manning
- Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, 157 F. Paul Anderson Tower, 512 Administration Dr, Lexington, KY, 40506, USA
| | - Claire E Rowlands
- Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, 157 F. Paul Anderson Tower, 512 Administration Dr, Lexington, KY, 40506, USA
| | - Hope Saindon
- Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, 157 F. Paul Anderson Tower, 512 Administration Dr, Lexington, KY, 40506, USA
| | - Brittany E Givens
- Department of Chemical and Materials Engineering, College of Engineering, University of Kentucky, 157 F. Paul Anderson Tower, 512 Administration Dr, Lexington, KY, 40506, USA.
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Wiwatchaitawee K, Ebeid K, Quarterman JC, Naguib Y, Ali MY, Oliva C, Griguer C, Salem AK. Surface Modification of Nanoparticles Enhances Drug Delivery to the Brain and Improves Survival in a Glioblastoma Multiforme Murine Model. Bioconjug Chem 2022; 33:1957-1972. [PMID: 35041398 DOI: 10.1021/acs.bioconjchem.1c00479] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Glioblastoma multiforme (GBM) is the most malignant type of brain tumor and has an extremely poor prognosis. Current treatment protocols lack favorable outcomes, and alternative treatments with superior efficacy are needed. In this study, we demonstrate that loading paclitaxel (PTX) in a polymeric, nanoparticulate delivery system is capable of improving its brain accumulation and therapeutic activity. We independently incorporated two different positively charged surface modifiers, poly(amidoamine) (PAMAM) and poly(ethylenimine) (PEI), onto poly(lactic-co-glycolic acid) (PLGA)-polyethylene glycol (PEG), PLGA-PEG, nanoparticles (NPs) using a modified nanoprecipitation technique that assures the formation of nanosized particles while exposing the positively charged polymer on the surface. The prepared NPs underwent comprehensive analyses of their size, charge, in vitro permeability against a BBB cell line, and in vivo biodistribution. Our results demonstrated the successful fabrication of positively charged NPs using PAMAM or PEI. Importantly, significant improvement in brain accumulation (in vivo) was associated with NPs containing PAMAM compared to unmodified NPs or NPs containing PEI. Finally, the efficacy of PAMAM-modified NPs loaded with PTX was evaluated with orthotopic human GBM xenografts in a mouse model, and the data demonstrated improved survival and equivalent safety compared to soluble PTX. Our data substantiate the importance of surface chemistry on the magnitude of NP accumulation in the brain and pave the way for further in vivo evaluation of chemotherapeutic drugs against GBM that have previously been overlooked because of their limited ability to cross the BBB.
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Affiliation(s)
- Kanawat Wiwatchaitawee
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States
| | - Kareem Ebeid
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States.,Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia, Minia 61519, Egypt.,Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Manufacturing, Deraya University, New Minia City, Minia 61768, Egypt
| | - Juliana C Quarterman
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States
| | - Youssef Naguib
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States.,Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia, Minia 61519, Egypt.,Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Manufacturing, Deraya University, New Minia City, Minia 61768, Egypt
| | - Md Yousuf Ali
- Interdisciplinary Graduate Program in Human Toxicology, University of Iowa, Iowa City, Iowa 52242, United States.,Free Radical & Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa 52242, United States.,Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242, United States
| | - Claudia Oliva
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa 52242, United States.,Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242, United States
| | - Corinne Griguer
- Free Radical & Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa 52242, United States.,Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242, United States
| | - Aliasger K Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States.,Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa 52242, United States
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