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Gleason JM, Klass SH, Huang P, Ozawa T, Santos RA, Fogarty MM, Raleigh DR, Berger MS, Francis MB. Intrinsically Disordered Protein Micelles as Vehicles for Convection-Enhanced Drug Delivery to Glioblastoma Multiforme. ACS APPLIED BIO MATERIALS 2022; 5:3695-3702. [PMID: 35857070 DOI: 10.1021/acsabm.2c00215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Lipid and micelle-based nanocarriers have been explored for anticancer drug delivery to improve accumulation and uptake in tumor tissue. As an experimental opportunity in this area, our lab has developed a protein-based micelle nanocarrier consisting of a hydrophilic intrinsically disordered protein (IDP) domain bound to a hydrophobic tail, termed IDP-2Yx2A. This construct can be used to encapsulate hydrophobic chemotherapeutics that would otherwise be too insoluble in water to be administered. In this study, we evaluate the in vivo efficacy of IDP-2Yx2A by delivering a highly potent but water-insoluble cancer drug, SN38, into glioblastoma multiforme (GBM) tumors via convection-enhanced delivery (CED). The protein carriers alone are shown to elicit minimal toxicity effects in mice; furthermore, they can encapsulate and deliver concentrations of SN38 that would otherwise be lethal without the carriers. CED administration of these drug-loaded micelles into mice bearing U251-MG GBM xenografts resulted in slowed tumor growth and significant increases in median survival times compared to nonencapsulated SN38 and PBS controls.
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Affiliation(s)
- Jamie M Gleason
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Sarah H Klass
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Paul Huang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Tomoko Ozawa
- Department of Neurological Surgery, University of California, San Francisco, California 94158, United States
| | - Raquel A Santos
- Department of Neurological Surgery, University of California, San Francisco, California 94158, United States
| | - Miko M Fogarty
- Department of Neurological Surgery, University of California, San Francisco, California 94158, United States
| | - David R Raleigh
- Department of Neurological Surgery, University of California, San Francisco, California 94158, United States.,Department of Radiation Oncology, University of California, San Francisco, California 94518, United States
| | - Mitchel S Berger
- Department of Neurological Surgery, University of California, San Francisco, California 94158, United States
| | - Matthew B Francis
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratories, Berkeley, California 94720, United States
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