Cited by 100Nanoparticle-Based Drug DeliveryGold and Silver Nanoparticles Synthesis and ApplicationsDendrimers and Hyperbranched Polymers

Mapping of Molecular Structure of the Nanoscale Surface in Bionanoparticles

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Herda, Luciana M., Hristov, Delyan R., Lo Giudice, Maria Cristina, Polo, Ester, Dawson, Kenneth A.·2017·Journal of the American Chemical Society

Abstract

Abstract Characterizing the orientation of covalently conjugated proteins on nanoparticles, produced for in vitro and in vivo targeting, though an important feature of such a system, has proved challenging. Although extensive physicochemical characterization of targeting nanoparticles can be addressed in detail, relevant biological characterization of the nanointerface is crucial in order to select suitable nanomaterials for further in vitro or in vivo experiments. In this work, we adopt a methodology using antibody fragments (Fab) conjugated to gold nanoparticles (immunogold) to map the available epitopes on a transferrin grafted silica particle (SiO2–PEG8–Tf) as a proxy methodology to predict nanoparticle biological function, and therefore cellular receptor engagement. Data from the adopted method suggest that, on average, only ∼3.5% of proteins grafted on the SiO2–PEG8–Tf nanoparticle surface have a favorable orientation for recognition by the cellular receptor.

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Crossref · 10.1021/jacs.6b12297

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26 of 26 references verified0 citation errors · 0 not checkable

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  • Covalent attachment of counterparts on particles significantly changes their conformations and particle surface properties, inducing potential detrimental interactions with external biomolecules rather than stabilizing them.

    “covalent attachment of their counterparts on particles significantly changes their conformations and particle surface properties (e.g., hydrophobicity and charge density), inducing potential detrimental interactions with external biomolecules, rather than stabilizing them13,19,37.”

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Authors
Herda, L. M., Hristov, D. R., Lo Giudice, M. C., Polo, E., & Dawson, K. A.
Affiliations
  • University College Dublin (IE)
  • University College Dublin , , Belfield, ,
Corresponding author
  • Polo, Ester
  • Dawson, Kenneth A.
Venue
Journal of the American Chemical Society
Published
2016-12-22
Volume
139
Issue
1
Pages
111-114
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2566100154
Cited by
100
References
26
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 8 · 2022: 13 · 2021: 8 · 2020: 16 · 2019: 13 · 2018: 17 · 2017: 17
FWCI
6.41
Type
journal article
Language
en
Open access
Locations
  • Journal of the American Chemical Society (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • Research Repository UCD (University College Dublin) (submittedVersion, cc-by-nc-nd)
  • Arrow@dit (Dublin Institute of Technology) (submittedVersion, cc-by-nc-nd)
Funders
  • Science Foundation Ireland (12/IA/1422)
  • Seventh Framework Programme (604602)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
  • Physical Sciences › Materials Science › Polymers and Plastics › Dendrimers and Hyperbranched Polymers
Keywords
bionanoparticles, antibody fragments, epitope mapping, transferrin, silica nanoparticles, PEGylation, targeted drug delivery
MeSH terms
Antibodies, Gold, Particle Size, Silicon Dioxide, Surface Properties, Molecular Structure, Metal Nanoparticles

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