Nanoscale structure-activity relationships, mode of action, and biocompatibility of gold nanoparticle antibiotics.

@article{Bresee2014NanoscaleSR,
  title={Nanoscale structure-activity relationships, mode of action, and biocompatibility of gold nanoparticle antibiotics.},
  author={Jamee Bresee and Constance Marie Bond and Roberta J. Worthington and Candice A Smith and Jennifer C. Gifford and Carrie A. Simpson and Carly J. Carter and Guankui Wang and Jesse G. N. Hartman and Niki A. Osbaugh and Richard K Shoemaker and Christian Melander and Daniel L. Feldheim},
  journal={Journal of the American Chemical Society},
  year={2014},
  volume={136 14},
  pages={
          5295-300
        }
}
The emergence of resistance to multiple antimicrobial agents by pathogenic bacteria has become a significant global public health threat. Multi-drug-resistant (MDR) Gram-negative bacteria have become particularly problematic, as no new classes of small-molecule antibiotics for Gram-negative bacteria have emerged in over two decades. We have developed a combinatorial screening process for identifying mixed ligand monolayer/gold nanoparticle conjugates (2.4 nm diameter) with antibiotic activity… 

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References

SHOWING 1-10 OF 19 REFERENCES
Small molecule-capped gold nanoparticles as potent antibacterial agents that target Gram-negative bacteria.
TLDR
A new strategy in designing antibacterial agents is illustrated--a series of commercially available compounds, amino-substituted pyrimidines, when presented on gold nanoparticles (NPs), show antibacterial activities against multidrug-resistant clinical isolates, without external sources of energy such as IR.
Small molecule suppression of carbapenem resistance in NDM-1 producing Klebsiella pneumoniae.
TLDR
A 2-aminoimidazole derived small molecule is identified that acts as an antibiotic adjuvant and is able to suppress resistance of a NDM-1 producing strain of K. pneumoniae, able to lower carbapenem minimum inhibitory concentrations by up to 16-fold while exhibiting little bactericidal activity itself.
Gastrointestinal bioavailability of 2.0 nm diameter gold nanoparticles.
TLDR
It is shown that GI absorption of gold nanoparticles modified with the small molecules tested was undetectable, but the absorption of PEGs depended upon PEG length, with the shortest PEG studied yielding gold nanoparticle absorptions that are orders-of-magnitude larger than observed previously.
Identification of antibiotics using small molecule variable ligand display on gold nanoparticles.
TLDR
Using simple 1-pot thiol exchange reactions to generate a library of mixed ligand-coated gold nanoparticles that was screened for antibiotic activity and antibiotic activity toward E. coli was determined and found to depend upon the combination of thiols assembled onto the nanoparticles.
Inhibition of HIV fusion with multivalent gold nanoparticles.
TLDR
A fragment of the potent HIV inhibitor TAK-779 was synthesized and conjugated to 2.0 nm diameter gold nanoparticles, and the (SDC-1721)-gold nanoparticle conjugates displayed activity comparable to that of Tak-779, suggesting that multivalent presentation of small molecules on gold nanoparticle surfaces can convert inactive drugs into potent therapeutics.
Unexpected toxicity of monolayer protected gold clusters eliminated by PEG-thiol place exchange reactions.
TLDR
An unexpected toxicity is associated with the tiopronin monolayer protected cluster (TMPC), making it incompatible for potential in vivo applications, and the incorporation of poly ethylene glycol (PEG) by a simple place-exchange reaction eliminates this toxicity.
Drugs for bad bugs: confronting the challenges of antibacterial discovery
TLDR
The experience of evaluating more than 300 genes and 70 high-throughput screening campaigns over a period of 7 years is shared, and what is learned is looked at and how that has influenced GlaxoSmithKline's antibacterials strategy going forward.
Biomimetic interactions of proteins with functionalized nanoparticles: a thermodynamic study.
TLDR
Gold nanoparticles functionalized with L-amino acid-terminated monolayers provide an effective platform for the recognition of protein surfaces and indicate an excellent linear correlation between DeltaH and TDeltaS with a slope (alpha) of 1.07 and an intercept (TDeltaS0) of 35.2 kJ mol(-1).
Ligand symmetry-equivalence on thiolate protected gold nanoclusters determined by NMR spectroscopy.
TLDR
It is shown that (1)H NMR spectroscopy can provide a detailed view of ligand-layer equivalence for thiolate protected gold nanoclusters and it is suggested that this analysis may be extended to other structurally obscure Nanoclusters, such as a ∼59 kDa compound for which the authors observe up to four symmetry environments.
...
1
2
...