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Chen H, Hu H, Tao C, Clauson RM, Moncion I, Luan X, Hwang S, Sough A, Sansanaphongpricha K, Liao J, Paholak HJ, Stevers NO, Wang G, Liu B, Sun D. Self-Assembled Au@Fe Core/Satellite Magnetic Nanoparticles for Versatile Biomolecule Functionalization. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23858-23869. [PMID: 31245984 DOI: 10.1021/acsami.9b05544] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Although the functionalization of magnetic nanoparticles (MNPs) with biomolecules has been widely explored for various biological applications, achieving efficient bioconjugations with a wide range of biomolecules through a single, universal, and versatile platform remains a challenge, which may significantly impact their applications' outcomes. Here, we report a novel MNP platform composed of Au@Fe core/satellite nanoparticles (CSNPs) for versatile and efficient bioconjugations. The engineering of the CSNPs is facilely formed through the self-assembly of ultrasmall gold nanoparticles (AuNPs, 2-3 nm in diameter) around MNPs with a polysiloxane-containing polymer coating. The formation of the hybrid magnetic nanostructure is revealed by absorption spectroscopy, dynamic light scattering (DLS), transmission electron microscopy (TEM), element analysis using atomic absorption spectroscopy, and vibrating sample magnetometer. The versatility of biomolecule loading to the CSNP is revealed through the bioconjugation of a wide range of relevant biomolecules, including streptavidin, antibodies, peptides, and oligonucleotides. Characterizations including DLS, TEM, lateral flow strip assay, fluorescence assay, giant magnetoresistive nanosensor array, high-performance liquid chromatography, and absorption spectrum are performed to further confirm the efficiency of various bioconjugations to the CSNP. In conclusion, this study demonstrates that the CSNP is a novel MNP-based platform that offers versatile and efficient surface functionalization with various biomolecules.
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Affiliation(s)
- Hongwei Chen
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Hongxiang Hu
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Chun Tao
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Ryan M Clauson
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Ila Moncion
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Xin Luan
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Sangyeul Hwang
- IMRA America, Inc. , 1044 Woodridge Avenue , Ann Arbor , Michigan 48105 , United States
| | - Ashley Sough
- IMRA America, Inc. , 1044 Woodridge Avenue , Ann Arbor , Michigan 48105 , United States
| | - Kanokwan Sansanaphongpricha
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Jinhui Liao
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Hayley J Paholak
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Nicholas O Stevers
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Guoping Wang
- IMRA America, Inc. , 1044 Woodridge Avenue , Ann Arbor , Michigan 48105 , United States
| | - Bing Liu
- IMRA America, Inc. , 1044 Woodridge Avenue , Ann Arbor , Michigan 48105 , United States
| | - Duxin Sun
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Michigan , Ann Arbor , Michigan 48109 , United States
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Clauson RM, Chen M, Scheetz LM, Berg B, Chertok B. Size-Controlled Iron Oxide Nanoplatforms with Lipidoid-Stabilized Shells for Efficient Magnetic Resonance Imaging-Trackable Lymph Node Targeting and High-Capacity Biomolecule Display. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20281-20295. [PMID: 29883088 DOI: 10.1021/acsami.8b02830] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoplatforms for biomolecule delivery to the lymph nodes have attracted considerable interest as vectors for immunotherapy. Core-shell iron oxide nanoparticles are particularly appealing because of their potential as theranostic magnetic resonance imaging (MRI)-trackable vehicles for biomolecule delivery. The key challenge for utilizing iron oxide nanoparticles in this capacity is control of their coating shells to produce particles with predictable size. Size determines both the carrier capacity for biomolecule display and the carrier ability to target the lymph nodes. In this study, we develop a novel coating method to produce core-shell iron oxide nanoparticles with controlled size. We utilize lipidlike molecules to stabilize self-assembled lipid shells on the surface of iron oxide nanocrystals, allowing the formation of consistent coatings on nanocrystals of varying size (10-40 nm). We further demonstrate the feasibility of leveraging the ensuing control of nanocarrier size for optimizing the carrier functionalities. Coated nanoparticles with 10 and 30 nm cores supported biomolecule display at 10-fold and 200-fold higher capacities than previously reported iron oxide nanoparticles, while preserving monodisperse sub-100 nm size populations. In addition, accumulation of the coated nanoparticles in the lymph nodes could be tracked by MRI and at 1 h post injection demonstrated significantly enhanced lymph node targeting. Notably, lymph node targeting was 9-40 folds higher than that for previously reported nanocarriers, likely due to the ability of these nanoparticles to robustly maintain their sub-100 nm size in vivo. This approach can be broadly applicable for rational design of theranostic nanoplatforms for image-monitored immunotherapy.
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