A fluorogenic BODIPY molecular rotor as an apoptosis marker.

Area of Science:

• Biochemistry
• Cell Biology
• Molecular Probes

Background:

• Apoptosis, or programmed cell death, is a critical biological process.
• Early and late-stage detection of apoptosis is crucial for understanding various diseases.
• Existing methods for apoptosis detection may have limitations in sensitivity or specificity.

Purpose of the Study:

• To design and synthesize a novel fluorogenic probe for sensitive and selective detection of apoptosis.
• To investigate the probe's mechanism of action and its fluorescence properties in apoptotic cells.

Main Methods:

• Design and synthesis of a BODIPY molecular rotor coupled with a zinc-dipicolylamine receptor.
• Characterization of the probe's photophysical properties in solution.
• In vitro testing of the probe's selectivity and sensitivity in healthy and apoptotic cells.

Main Results:

• The designed probe exhibits poor fluorescence in solution and healthy cells.
• The probe selectively binds to phosphatidylserine, a marker exposed on the surface of early apoptotic cells.
• The probe is internalized into late apoptotic cells, leading to a significant increase in green fluorescence.

Conclusions:

• The developed fluorogenic probe is a promising tool for the sensitive and selective detection of both early and late stages of apoptosis.
• This probe offers a visual readout of apoptosis through green fluorescence, aiding in cellular studies and diagnostics.