Tuning the Flavin Core via Donor Appendage for Selective Subcellular Bioimaging and PDT Application

Area of Science:

• Chemical Biology
• Biomedical Imaging
• Photodynamic Therapy

Background:

• Lysosomes are crucial organelles involved in cellular degradation.
• Developing targeted imaging agents for lysosomes is essential for understanding cellular processes.
• Photodynamic therapy (PDT) offers a light-activated treatment modality for various diseases.

Purpose of the Study:

• To synthesize and characterize a novel flavin analogue for lysosome bioimaging.
• To evaluate the potential of this analogue as a photosensitizer for photodynamic therapy (PDT).

Main Methods:

• Chemical synthesis of a novel flavin analogue incorporating a methoxy naphthyl group.
• Assessment of photophysical properties, including photostability and aggregation-induced emission.
• Evaluation of lysosomal colocalization and reactive oxygen species (ROS) generation in cells.

Main Results:

• The synthesized flavin analogue demonstrated excellent photostability and selectivity.
• The compound exhibited aggregation-induced emission and efficient lysosomal colocalization.
• The flavin analogue effectively generated reactive oxygen species (ROS) upon light irradiation.

Conclusions:

• The novel flavin analogue is a promising single-component agent for lysosome bioimaging.
• Its photosensitizing properties make it a strong candidate for photodynamic therapy (PDT) applications.