Size- and coating-dependent uptake of polymer-coated gold nanoparticles in primary human dermal microvascular endothelial cells

interaction with cells
[button href="http://doi.org/10.1021/bm300248u" color="lime_green" target="_blank" id=""]PDF[/button]

Christian Freese, Matthew I. Gibso, Harm-Anton Klok, Ronald E. Unger, C. James Kirkpatrick

Biomacromolecules, 13 (5), pp 1533–1543 (2012)

A library-orientated approach is used to gain understanding of the interactions of well-defined nanoparticles with primary human endothelial cells, which are a key component of the vasculature. Fifteen sequentially modified gold nanoparticles (AuNPs) based on three different core sizes (18, 35, 65 nm) and five polymeric coatings were prepared. The synthetic methodology ensured homogeneity across each series of particles to allow sequential investigation of the chemical features on cellular interactions. The toxicity of these nanoparticles, their uptake behavior in primary human dermal microvascular endothelial cells (HDMECs), and quantification of uptake were all investigated. The results of our studies indicated that high concentrations of gold nanoparticles (250 μg/mL) were nontoxic and that the number of internalized nanoparticles was related to nanoparticle size and surface chemistry. In summary, the positive-charged ethanediamine-coated AuNPs were internalized to a greater extent than the negative- or neutral-charged AuNPs. Moreover, differences in the amounts of internalized AuNPs could be shown for the three neutral-charged AuNPs, whereas the uptake of hydroxypropylamine-coated particles was preferred compared with glucosamine-coated or PEGylated AuNPs. Hydroxypropylamine-coated AuNPs were found to be the most efficient neutral-charged particles in overcoming the endothelial cell barrier and entering the cell.

[people_short
name=”James Kirkpatrick”
photo=”https://softmat.net/wp-content/uploads/2012/06/Kirfpatrick16022012.jpg”
url=”https://softmat.net/Kirkpatrick/”
]
Share This Post

Customer Reviews

5
0%
4
0%
3
0%
2
0%
1
0%
0
0%

    Leave a Reply

    Your email address will not be published. Required fields are marked *

    * Copy This Password *

    * Type Or Paste Password Here *

    3,259 Spam Comments Blocked so far by Spam Free Wordpress

    You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

    Thanks for submitting your comment!