Optical Detection of Intracellular Quantities Using Nanoscale Technologies.

Area of Science:

• Multidisciplinary research at the intersection of physical sciences, life sciences, and medicine.
• Development of advanced optical probes for subcellular measurements.

Background:

• Subcellular resolution measurements offer new insights into intertwined physical, chemical, and biological processes.
• Existing optical probes face challenges in sensitivity, specificity, and practical application.

Purpose of the Study:

• To provide an overview of optical probes for measuring key subcellular parameters.
• To highlight the potential and challenges of nanoparticle-based probes.
• To emphasize the need for multidisciplinary collaboration.

Main Methods:

• Overview of luminescent probes (molecular dyes and nanoparticle platforms) for temperature, pH, and oxygen.
• Discussion of probes for inorganic ions, free radicals, genetic material (DNA/RNA), and biomarkers.
• Consideration of probe properties like photostability, biocompatibility, and targeting.

Main Results:

• Luminescent probes offer versatile options for monitoring intracellular conditions.
• Nanoparticle probes show promise for enhanced functionality and measurement quality.
• Detection of free radicals, DNA, and biomarkers at low levels has significant biomedical potential.

Conclusions:

• Optical probes are crucial tools for understanding cellular processes and disease.
• Further multidisciplinary research is required to validate and optimize probe performance.
• Multifunctional and compatible platforms will accelerate research and clinical applications.