Engineering cell surfaces via liposome fusion

Area of Science:

• Biochemistry
• Materials Science
• Cell Biology

Background:

• Cell surface engineering is crucial for applications in diagnostics and therapeutics.
• Developing precise methods for cell functionalization and patterning remains a challenge.

Purpose of the Study:

• To develop a novel cell-surface engineering strategy using liposome fusion.
• To enable chemoselective ligation and patterning of cells via covalent oxime bond formation.

Main Methods:

• Liposome fusion with ketone and oxyamine functionalization.
• Characterization using MALDI-MS, light scattering, FRET, and TEM.
• Cell surface labeling with rhodamine dye and flow cytometry for quantification.

Main Results:

• Liposomes fused with cell membranes, presenting ketone and oxyamine molecules on cell surfaces.
• Successful chemoselective ligation of functionalized cells and surfaces via oxime linkage.
• Demonstrated cell patterning, adhesion, spreading, and proliferation in engineered regions.

Conclusions:

• Liposome-mediated cell surface functionalization provides a versatile platform for cell engineering.
• This method allows for precise spatial control and stable adhesion of cells.
• The developed strategy holds potential for advanced cell-based assays and tissue engineering.