当前位置： SCI文献检索 > JOURNAL OF INORGANIC BIOCHEMISTRY期刊下所有文献 > Tuning the interactions of PEG-coated gold nanorods with BSA and model proteins through insertion of amino or carboxylate groups.

Tuning the interactions of PEG-coated gold nanorods with BSA and model proteins through insertion of amino or carboxylate groups.

Abstract：

:Gold nanorods (GNRs) are important platforms for biosensing and drug delivery. As for most nanomaterials, appropriate coatings such as polyethylene glycol (PEG) are needed to stabilize GNRs within biological fluids. We show here that the interactions of GNRs with proteins can be finely modulated through surface modification using PEG-containing chains bearing charged headgroups. Interestingly, introduction of amino or carboxylate groups produces relevant and differential changes in GNR interactions with three representative proteins: lysozyme, cytochrome c, and bovine serum albumin. These effects were explored through the direct monitoring of plasmonic bands of the GNRs and are supported by independent dynamic light scattering (DLS) and circular dichroism (CD) determinations. Notably, GNR-protein interactions observed for these charged GNRs can be almost completely reversed by salt addition. These observations demonstrate the importance of electrostatic effects in governing GNR-protein interactions, and provide a basis for new sensing and delivery platforms.

journal_name

J Inorg Biochem

journal_title

Journal of inorganic biochemistry

authors

Scaletti F,Feis A,Centi S,Pini R,Rotello VM,Messori L

doi

10.1016/j.jinorgbio.2015.04.016

subject

Has Abstract

pub_date

2015-09-01 00:00:00

pages

120-5

eissn

0162-0134

issn

1873-3344

pii

S0162-0134(15)00117-8

journal_volume

150

pub_type

杂志文章

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