Pitfalls and opportunities in quantitative fluorescence-based nanomedicine studies - A commentary

Area of Science:

• Nanomedicine
• Biophysical Chemistry
• Optical Imaging

Background:

• Fluorescence-based techniques are widely used for studying nanomedicine targeting to cells and tissues.
• Current fluorescence-based studies often lack quantitative rigor, hindering direct comparisons of nanomedicine performance across different research.
• This limits the reliable assessment of nanomedicine efficacy and accumulation in biological systems.

Purpose of the Study:

• To critically evaluate common pitfalls in quantitative fluorescence-based nanomedicine research.
• To propose guidelines for improving experimental design in fluorescence-based nanomedicine studies.
• To encourage more quantitative thinking in evaluating nanomedicine targeting and accumulation.

Main Methods:

• Analysis of literature concerning fluorescence-based nanomedicine studies.
• Identification of mechanisms affecting fluorescence signal accuracy, including solvent interactions and fluorophore dissociation.
• Development of proposed guidelines for experimental design in tissue accumulation and cell uptake studies.

Main Results:

• Identified key factors that compromise the quantitative interpretation of fluorescence signals from nanoparticles.
• Demonstrated how solvent interactions and fluorophore dissociation can lead to inaccurate assessments of nanomedicine targeting.
• Highlighted limitations in current fluorescence techniques like microscopy and flow cytometry for precise quantification.

Conclusions:

• Accurate quantitative assessment of nanomedicine performance requires careful consideration of experimental design.
• Guidelines are proposed to address pitfalls in fluorescence-based measurements for improved nanomedicine research.
• Implementing these guidelines can enable more reliable estimation of nanoparticle accumulation in cells and organs.