Improving Low Expressed Antigen Detection in Immunofluorescence Applications

We are excited to introduce to you a silica nanoparticle technology from our partners AcZon. AcZon designed these silica nanoparticles with hopes of addressing the following challenges in Immunofluorescence:

• Molecular fluorophores, such as FITC and RPE, show a rapid decay under stressing conditions
• Often, the time needed by the operator to focus the samples and take pictures results in the bleaching of the fluorescent molecules and consequent signal intensity loss
• For multiple tandem dyes, the drawback lies in the high instability of the acceptor molecules (usually cyanines)

AcZon’s silica nanoparticle provide a protective core/shell structure, protecting the sensitive fluorescent molecules increasing the fluorophores stability.

Key features:

• The sensitive fluorescent molecules are covalently bound inside the silica matrix, providing shield effects
• The external PEGylated shell allows water solubility and the anchoring of targeting biomolecules such as antibodies/peptides
• The silica-nanoparticles entrap a higher number of fluorescent molecules, resulting in a higher signal

These features cause the fluorescence signal to be brighter and to last much longer than traditionally used molecular fluorochromes

Here we demonstrate the increased stability of nanoparticles-based fluorochromes (NTB575 and NTB530) with respect to traditionally used molecular fluorochromes (RPE and FITC):

Please reach out to us for a copy of the application note with full details.