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Mu Q, Lin G, Stephen ZR, Chung S, Wang H, Patton VK, Gebhart RN, Zhang M. In vivo Serum Enabled Production of Ultrafine Nanotherapeutics for Cancer Treatment. MATERIALS TODAY (KIDLINGTON, ENGLAND) 2020; 38:10-23. [PMID: 33716549 PMCID: PMC7944405 DOI: 10.1016/j.mattod.2020.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Systemic delivery of hydrophobic anti-cancer drugs with nanocarriers, particularly for drug-resistant and metastatic cancer, remain a challenge because of the difficulty to achieve high drug loading, while maintaining a small hydrodynamic size and colloid stability in blood to ensure delivery of an efficacious amount of drug to tumor cells. Here we introduce a new approach to address this challenge. In this approach, nanofibers of larger size with good drug loading capacity are first constructed by a self-assembly process, and upon intravascular injection and interacting with serum proteins in vivo, these nanofibers break down into ultra-fine nanoparticles of smaller size that inherit the drug loading property from their parent nanofibers. We demonstrate the efficacy of this approach with a clinically available anti-cancer drug: paclitaxel (PTX). In vitro, the PTX-loaded nanoparticles enter cancer cells and induce cellular apoptosis. In vivo, they demonstrate prolonged circulation in blood, induce no systemic toxicity, and show high potency in inhibiting tumor growth and metastasis in both mouse models of aggressive, drug-resistant breast cancer and melanoma. This study points to a new strategy toward improved anti-cancer drug delivery and therapy.
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Affiliation(s)
- Qingxin Mu
- Department of Materials Science and Engineering, University
of Washington, Seattle, Washington, 98195, USA
| | - Guanyou Lin
- Department of Materials Science and Engineering, University
of Washington, Seattle, Washington, 98195, USA
| | - Zachary R. Stephen
- Department of Materials Science and Engineering, University
of Washington, Seattle, Washington, 98195, USA
| | - Steve Chung
- Department of Materials Science and Engineering, University
of Washington, Seattle, Washington, 98195, USA
| | - Hui Wang
- Department of Materials Science and Engineering, University
of Washington, Seattle, Washington, 98195, USA
| | - Victoria K. Patton
- Department of Chemical Engineering, University of
Washington, Seattle, Washington, 98195, USA
| | - Rachel N. Gebhart
- Department of Chemistry, University of Washington, Seattle,
Washington, 98195, USA
| | - Miqin Zhang
- Department of Materials Science and Engineering, University
of Washington, Seattle, Washington, 98195, USA
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Street STG, He Y, Jin XH, Hodgson L, Verkade P, Manners I. Cellular uptake and targeting of low dispersity, dual emissive, segmented block copolymer nanofibers. Chem Sci 2020; 11:8394-8408. [PMID: 34094184 PMCID: PMC8162143 DOI: 10.1039/d0sc02593c] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/03/2020] [Indexed: 11/21/2022] Open
Abstract
Polymer-based nanoparticles show substantial promise in the treatment and diagnosis of cancer and other diseases. Herein we report an exploration of the cellular uptake of tailored, low dispersity segmented 1D nanoparticles which were prepared from an amphiphilic block copolymer, poly(dihexylfluorene)-b-poly(ethyleneglycol) (PDHF13-b-PEG227), with a crystallizable PDHF core-forming block and a 'stealth' PEG corona-forming block with different end-group functionalities. Segmented C-B-A-B-C pentablock 1D nanofibers with varied spatially-defined coronal chemistries and a selected length (95 nm) were prepared using the living crystallization-driven self-assembly (CDSA) seeded-growth method. As the blue fluorescence of PDHF is often subject to environment-related quenching, a far-red BODIPY (BD) fluorophore was attached to the PEG end-group of the coronal B segments to provide additional tracking capability. Folic acid (FA) was also incorporated as a targeting group in the terminal C segments. These dual-emissive pentablock nanofibers exhibited uptake into >97% of folate receptor positive HeLa cells by flow cytometry. In the absence of FA, no significant uptake was detected and nanofibers with either FA or BD coronal groups showed no significant toxicity. Correlative light and electron microscopy (CLEM) studies revealed receptor-mediated endocytosis as an uptake pathway, with subsequent localization to the perinuclear region. A significant proportion of the nanofibers also appeared to interact with the cell membrane in an end-on fashion, which was coupled with fluorescence quenching of the PDHF core. These results provide new insights into the cellular uptake of polymer-based nanofibers and suggest their potential use in targeted therapies and diagnostics.
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Affiliation(s)
- Steven T G Street
- School of Chemistry, University of Bristol Bristol BS8 1TS UK
- Department of Chemistry, University of Victoria Victoria BC V8W 3V6 Canada
| | - Yunxiang He
- School of Chemistry, University of Bristol Bristol BS8 1TS UK
| | - Xu-Hui Jin
- School of Chemistry, University of Bristol Bristol BS8 1TS UK
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing China
| | - Lorna Hodgson
- School of Biochemistry, University of Bristol Bristol BS8 1TD UK
| | - Paul Verkade
- School of Biochemistry, University of Bristol Bristol BS8 1TD UK
| | - Ian Manners
- School of Chemistry, University of Bristol Bristol BS8 1TS UK
- Department of Chemistry, University of Victoria Victoria BC V8W 3V6 Canada
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Abstract
The systemic delivery of drugs to the body via circulation after oral administration is a preferred method of drug administration during cancer treatment given its ease of implementation. However, the physicochemical properties of many current anticancer drugs limit their effectiveness when delivered by systemic routes. The use of nanoparticles (NPs) has emerged as an effective means of overcoming the inherent limitations of systemic drug delivery. We provide herein an overview of various NP formulations that facilitate improvements in the efficacy of various anticancer drugs compared with the free drug. This review will be useful to the reader who is interested in the role NP technology is playing in shaping the future of chemotherapeutic drug delivery and disease treatment.
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Abriata JP, Turatti RC, Luiz MT, Raspantini GL, Tofani LB, do Amaral RLF, Swiech K, Marcato PD, Marchetti JM. Development, characterization and biological in vitro assays of paclitaxel-loaded PCL polymeric nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 96:347-355. [DOI: 10.1016/j.msec.2018.11.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 10/11/2018] [Accepted: 11/23/2018] [Indexed: 10/27/2022]
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Gao L, Gao L, Fan M, Li Q, Jin J, Wang J, Lu W, Yu L, Yan Z, Wang Y. Hydrotropic polymer-based paclitaxel-loaded self-assembled nanoparticles: preparation and biological evaluation. RSC Adv 2017. [DOI: 10.1039/c7ra04563h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hydrotropic polymer-based paclitaxel-loaded self-assembled nanoparticles: preparation and biological evaluation.
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