Related Experiment Video
Updated: May 24, 2026
08:21
A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions
Published on: February 5, 2016
Tissue and cellular distribution of gold nanoparticles varies based on aggregation/agglomeration status
Athena M Keene1, David Peters, Rodney Rouse
1US FDA, Center for Drug Evaluation & Research, Office of Testing & Research, Division of Drug Safety Research, Building 64 Room 2086 HFD 910, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
Nanomedicine (London, England)
|February 21, 2012
Summary
Gold nanoparticle superstructures show different biological impacts than primary particles. Characterizing nanomaterial structures is crucial for safety assessment before in vivo administration.
Area of Science:
- Nanotechnology
- Biomedical Engineering
- Materials Science
Background:
- Nanoparticles can form larger superstructures like aggregates and agglomerates.
- The in vivo biological impact of these nanoparticle superstructures is largely unassessed.
- This knowledge gap is critical for the safety evaluation of therapeutic nanoparticles.
Purpose of the Study:
- To assess the in vivo biological impact of gold nanoparticle superstructures.
- To compare the distribution and effects of nanoparticle aggregates and agglomerates versus primary particles.
Main Methods:
- Intravenous administration of gold nanoparticle superstructures (aggregates and agglomerates) and primary particles into a mouse model.
- Analysis of organ and cellular distribution.
- Evaluation of blood serum chemistry data.
Main Results:
- Gold nanoparticle superstructures exhibited distinct organ and cellular distribution compared to primary particles.
- Different superstructure types (reversible agglomerates vs. irreversible aggregates) showed varied distribution patterns.
- Blood serum chemistry data differed significantly between the various gold nanoparticle structures.
Conclusions:
- Nanoparticle superstructures may possess different toxicity mechanisms compared to their primary building blocks.
- Complete characterization and stability assessment of nanomaterials are essential before in vivo administration.
- Findings highlight the importance of understanding nanoparticle superstructure behavior for safe therapeutic applications.
