Microscale plasma-initiated patterning of electrospun polymer scaffolds

Area of Science:

• Biomaterials engineering
• Surface science
• Cellular biology

Background:

• Microscale plasma-initiated patterning (microPIP) is a novel technique for creating biomolecular micropatterns on polymer surfaces.
• The method utilizes a polydimethylsiloxane (PDMS) stamp for selective plasma treatment, generating distinct hydrophobic and hydrophilic regions.

Purpose of the Study:

• To investigate the application of microPIP for patterning biomolecules on textured nanofibrillar scaffolds.
• To assess the influence of these patterned surfaces on neural precursor cell adhesion and organization.

Main Methods:

• Utilized microPIP with a PDMS stamp to create patterned surfaces on an electrospun polyamide nanofibrillar matrix.
• Applied laminin-1 to the patterned substrate.
• Cultured radial glial clones (neural precursors) on the patterned matrices.

Main Results:

• Laminin-1 selectively adsorbed onto the patterned regions of the nanofibrillar matrix.
• Radial glial clones exhibited selective adhesion, aligning with the protein contours on the surface.
• Demonstrated successful micropatterning of textured scaffolds for guiding cell organization.

Conclusions:

• Micropatterned textured surfaces can provide external chemical cues for directed cellular organization.
• microPIP is a viable method for creating complex biomolecular patterns on nanofibrillar scaffolds.
• This approach holds potential for engineering cellular microenvironments for regenerative medicine applications.