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Fabricating Multi-Component Lipid Nanotube Networks Using the Gliding Kinesin Motility Assay
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Freely drawn single lipid nanotube patterns.
Kaori Sugihara1, Amin Rustom, Joachim P Spatz
1Max Planck Institute for Intelligent Systems, Dept. New Materials and Biosystems & University of Heidelberg, Institute for Physical Chemistry, Dept. Biophysical Chemistry, Heisenbergstr. 3, 70569 Stuttgart, Germany. kaori.sugihara@unige.ch.
Soft Matter
|January 29, 2015
Summary
Researchers developed a simple method to draw single lipid nanotubes (LNTs) on surfaces. This technique uses 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) lipids and enables patterned LNTs for potential applications.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Surface Chemistry
Background:
- Lipid nanotubes (LNTs) are self-assembled 3D structures with potential applications.
- Current methods for patterning LNTs on substrates are complex and inefficient.
- A facile technique for LNT patterning is crucial for advancing their use.
Purpose of the Study:
- To develop an easy method for patterning single lipid nanotubes (LNTs) on surfaces.
- To demonstrate the utility of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) lipids in LNT patterning.
- To investigate the stability and functional capabilities of patterned LNTs.
Main Methods:
- Utilized pre-self-assembled LNTs or HII phase lipid blocks as a lipid reservoir.
- Employed a micromanipulator to apply a point load, enabling free-drawing of LNT patterns.
- Adjusted surface properties using polyelectrolyte multilayers for LNT adhesion.
- Demonstrated vesicle fusion with LNTs for molecular transport.
Main Results:
- Successfully demonstrated a simple free-drawing technique for single LNT patterns of any shape.
- Showcased the use of DOPE lipids, which favor the HII phase, for LNT fabrication.
- Achieved stable adhesion of patterned LNTs on surfaces for over a week.
- Confirmed successful fusion of vesicles with LNTs, facilitating molecular transport.
Conclusions:
- The developed technique offers a straightforward approach to pattern LNTs, overcoming a key bottleneck in their application.
- DOPE lipids and the HII phase are key to this simplified LNT patterning method.
- Patterned LNTs exhibit stability and functionality, including vesicle fusion and molecular transport, opening avenues for nanotechnology and drug delivery.
