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Seo JW, Ang J, Mahakian LM, Tam S, Fite B, Ingham ES, Beyer J, Forsayeth J, Bankiewicz KS, Xu T, Ferrara KW. Self-assembled 20-nm (64)Cu-micelles enhance accumulation in rat glioblastoma. J Control Release 2015; 220:51-60. [PMID: 26437259 DOI: 10.1016/j.jconrel.2015.09.057] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Revised: 09/17/2015] [Accepted: 09/27/2015] [Indexed: 12/18/2022]
Abstract
There is an urgent need to develop nanocarriers for the treatment of glioblastoma multiforme (GBM). Using co-registered positron emission tomography (PET) and magnetic resonance (MR) images, here we performed systematic studies to investigate how a nanocarrier's size affects the pharmacokinetics and biodistribution in rodents with a GBM xenograft. In particular, highly stable, long-circulating three-helix micelles (3HM), based on a coiled-coil protein tertiary structure, were evaluated as an alternative to larger nanocarriers. While the circulation half-life of the 3HM was similar to 110-nm PEGylated liposomes (t1/2=15.5 and 16.5h, respectively), the 20-nm micelles greatly enhanced accumulation within a U87MG xenograft in nu/nu rats after intravenous injection. After accounting for tumor blood volume, the extravasated nanoparticles were quantified from the PET images, yielding ~0.77%ID/cm(3) for the micelles and 0.45%ID/cm(3) for the liposomes. For GBM lesions with a volume greater than 100mm(3), 3HM accumulation was enhanced both within the detectable tumor and in the surrounding brain parenchyma. Further, the nanoparticle accumulation was shown to extend to the margins of the GBM xenograft. In summary, 3HM provides an attractive nanovehicle for carrying treatment to GBM.
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Affiliation(s)
- Jai Woong Seo
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - JooChuan Ang
- Department of Materials Science & Engineering, University of California, Berkeley, Berkeley, CA, United States
| | - Lisa M Mahakian
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Sarah Tam
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Brett Fite
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Elizabeth S Ingham
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Janine Beyer
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, United States
| | - John Forsayeth
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Krystof S Bankiewicz
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Ting Xu
- Department of Materials Science & Engineering, University of California, Berkeley, Berkeley, CA, United States
| | - Katherine W Ferrara
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States.
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