Arrays for the combinatorial exploration of cell adhesion

Area of Science:

• Biomaterials Science
• Surface Chemistry
• Cell Biology

Background:

• Fabricating patterned surfaces is crucial for studying cell adhesion.
• Combinatorial assays require precise control over surface chemistry.
• Existing methods may lack the specificity needed for complex cell interactions.

Purpose of the Study:

• To develop a novel method for fabricating arrays of self-assembled monolayers (SAMs) on gold surfaces.
• To create surfaces that enable combinatorial assays for cell adhesion.
• To investigate differential cell binding and proliferation on engineered surfaces.

Main Methods:

• Fabrication of alkane thiol (AT) self-assembled monolayer (SAM) arrays on gold.
• Utilizing a fluorous SAM as a cytophobic and solvophobic background.
• Employing an assembly-after-conjugation strategy enabled by the solvophobic background.
• Generating SAMs with mixtures of ATs and peptide-terminated ATs.

Main Results:

• Successfully fabricated arrays of SAMs with distinct chemical features.
• Demonstrated differential and specific binding of multiple cell types to the patterned surfaces.
• Confirmed proliferation of pluripotent human embryonic stem cells on the fabricated surfaces.

Conclusions:

• The new method provides a versatile platform for creating complex surface chemistries.
• The patterned surfaces effectively modulate cell adhesion and proliferation.
• This approach has significant implications for stem cell research and tissue engineering.