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Aborig M, Malik PRV, Nambiar S, Chelle P, Darko J, Mutsaers A, Edginton AN, Fleck A, Osei E, Wettig S. Biodistribution and Physiologically-Based Pharmacokinetic Modeling of Gold Nanoparticles in Mice with Interspecies Extrapolation. Pharmaceutics 2019; 11:E179. [PMID: 31013763 PMCID: PMC6523871 DOI: 10.3390/pharmaceutics11040179] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/04/2019] [Accepted: 04/10/2019] [Indexed: 12/30/2022] Open
Abstract
Gold nanoparticles (AuNPs) are a focus of growing medical research applications due to their unique chemical, electrical and optical properties. Because of uncertain toxicity, "green" synthesis methods are emerging, using plant extracts to improve biological and environmental compatibility. Here we explore the biodistribution of green AuNPs in mice and prepare a physiologically-based pharmacokinetic (PBPK) model to guide interspecies extrapolation. Monodisperse AuNPs were synthesized and capped with epigallocatechin gallate (EGCG) and curcumin. 64 CD-1 mice received the AuNPs by intraperitoneal injection. To assess biodistribution, groups of six mice were sacrificed at 1, 7, 14, 28 and 56 days, and their organs were analyzed for gold content using inductively coupled plasma mass spectrometry (ICP-MS). A physiologically-based pharmacokinetic (PBPK) model was developed to describe the biodistribution data in mice. To assess the potential for interspecies extrapolation, organism-specific parameters in the model were adapted to represent rats, and the rat PBPK model was subsequently evaluated with PK data for citrate-capped AuNPs from literature. The liver and spleen displayed strong uptake, and the PBPK model suggested that extravasation and phagocytosis were key drivers. Organ predictions following interspecies extrapolation were successful for rats receiving citrate-capped AuNPs. This work lays the foundation for the pre-clinical extrapolation of the pharmacokinetics of AuNPs from mice to larger species.
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Affiliation(s)
- Mohamed Aborig
- School of Pharmacy, University of Waterloo, Kitchener, ON N2G 1C5, Canada.
| | - Paul R V Malik
- School of Pharmacy, University of Waterloo, Kitchener, ON N2G 1C5, Canada.
| | - Shruti Nambiar
- School of Pharmacy, University of Waterloo, Kitchener, ON N2G 1C5, Canada.
| | - Pierre Chelle
- School of Pharmacy, University of Waterloo, Kitchener, ON N2G 1C5, Canada.
| | - Johnson Darko
- Grand River Regional Cancer Centre, Grand River Hospital, Kitchener, ON N2G 1G3, Canada.
- Department of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Anthony Mutsaers
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Andrea N Edginton
- School of Pharmacy, University of Waterloo, Kitchener, ON N2G 1C5, Canada.
| | - Andre Fleck
- Grand River Regional Cancer Centre, Grand River Hospital, Kitchener, ON N2G 1G3, Canada.
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Ernest Osei
- Grand River Regional Cancer Centre, Grand River Hospital, Kitchener, ON N2G 1G3, Canada.
- Department of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - Shawn Wettig
- School of Pharmacy, University of Waterloo, Kitchener, ON N2G 1C5, Canada.
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Montfoort A, Boere WA, Griensven LJLDV. Changes in the cholesterol and phospholipid content of mouse spleen after Raucscher leukemia virus infection. Lipids 1976; 11:798-801. [PMID: 994750 DOI: 10.1007/bf02533406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The effect of Rauscher Leukemia Virus (MuLV-R) infection on the lipid composition of mouse spleen from BALB/c mice was investigated. Drastic changes in the lipid composition of the spleen as a result of tumor growth induced by the virus could be demonstrated at 21 days after infection. The molar ratio of cholesterol to phospholipids was found to be low, while a shift within the choline containing phospholipid classes resulted into a lower sphingomyelin and a higher phosphatidyl choline content of the MuLV-R infected spleen. The cholesterol ester content increased more than two-fold during tumor growth, and shifts in the fatty acid patterns of the lipids were demonstrated.
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