Unravelling drug delivery using in vitro Fluorescence Correlation Spectroscopy (FCS)

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Pharmacology

Background:

• Effective drug delivery requires therapeutic cargo to reach target sites intact and at sufficient concentrations.
• Nanocarriers are used to encapsulate drugs, improving solubility, stability, and transport.
• Biological environments present complex barriers that challenge nanocarrier function and fate prediction.

Purpose of the Study:

• To highlight Fluorescence Correlation Spectroscopy (FCS) as a tool for real-time tracking of nanocarrier-mediated drug delivery.
• To demonstrate FCS's capability in complex biological settings like living cells and blood.
• To showcase how FCS can provide insights for rational design of next-generation drug delivery vehicles.

Main Methods:

• Utilizing Fluorescence Correlation Spectroscopy (FCS) for high-resolution, real-time tracking.
• Investigating encapsulation, nanoparticle functionalization, and cargo/carrier degradation.
• Studying drug release kinetics in native biological environments, including living cells and full blood.

Main Results:

• FCS allows direct observation of the drug delivery process under native conditions.
• The technique provides detailed insights into nanocarrier behavior and cargo release.
• FCS facilitates understanding of molecular mechanisms underlying nanomedicine function.

Conclusions:

• FCS is a powerful and versatile tool for studying nanocarrier-mediated drug delivery.
• Insights from FCS are crucial for deciphering nanomedicine mechanisms.
• FCS data will drive the rational design of advanced drug delivery systems.