LDS 698: A highly sensitive probe for tracking mitochondrial membrane potential in live cells

Area of Science:

• Cell Biology
• Biophysics

Background:

• Mitochondrial function is vital for cellular processes like energy production and is implicated in diseases such as cancer and neurodegeneration.
• Existing methods for monitoring mitochondrial membrane potential in live cells have limitations in sensitivity and dynamic tracking.

Purpose of the Study:

• To introduce LDS 698, a novel hemicyanine dye, for sensitive and specific staining of functional mitochondria based on membrane potential.
• To evaluate LDS 698's utility in live-cell imaging and various analytical techniques for studying mitochondrial dynamics.

Main Methods:

• Utilized LDS 698, a hemicyanine laser dye, for mitochondrial membrane potential staining.
• Applied fluorescence microscopy, flow cytometry, and plate reader assays to assess dye performance.
• Conducted prolonged live-cell imaging to evaluate photostability and non-toxicity.

Main Results:

• LDS 698 demonstrated high sensitivity and specificity in detecting subtle changes in mitochondrial membrane potential.
• The dye enabled robust, photostable, and non-toxic prolonged live-cell imaging.
• Quantification of mitochondrial morphology and membrane potential was achieved.

Conclusions:

• LDS 698 is a versatile and effective tool for monitoring mitochondrial membrane potential in live cells.
• This novel application provides new avenues for studying mitochondrial homeostasis and disease mechanisms.
• The dye's properties support diverse analytical techniques for biological research.