[Some regularities of dimer II formation in BODIPY-FL-labeled lipids]

Area of Science:

• Biophysical chemistry
• Lipidomics
• Fluorescent probe technology

Context:

• Investigating the self-assembly properties of lipid probes is crucial for understanding membrane organization.
• BODIPY-FL is a commonly used fluorescent dye for labeling biomolecules, including lipids.
• Gangliosides and triglycerides are important classes of lipids with distinct headgroup and tail structures.

Purpose:

• To define regularities in dimer II formation of BODIPY-FL-labeled lipid probes.
• To compare the dimer formation propensity of BODIPY-FL-labeled gangliosides versus triglycerides.
• To elucidate the influence of label position on dimer II formation.

Summary:

• Regularities of dimer II formation were defined using mono-, bis-, and tris-BODIPY-FL derivatives of gangliosides G(M1) and G(D1a), and mono- and bis-BODIPY-FL derivatives of triglycerides.
• BODIPY-FL-labeled glycolipids exhibited a greater tendency for dimer II formation in phospholipid layers compared to BODIPY-FL-labeled glycerides.
• Dimer II formation was dependent on the label position, with probes labeled in the polar head area being more prone to dimerization than those labeled in the apolar part.

Impact:

• Provides insights into the molecular interactions governing the self-assembly of fluorescent lipid probes.
• Informs the design of novel lipid probes with controlled aggregation properties for advanced imaging applications.
• Contributes to a better understanding of lipid organization and dynamics within biological membranes.