Photopolymerizable Zwitterionic Polymer Patterns Control Cell Adhesion and Guide Neural Growth.

Photopolymerizable Zwitterionic Polymer Patterns Control Cell Adhesion and Guide Neural Growth.
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DOI:
10.1021/acs.biomac.7b00579
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发表时间:
2017-08-14
期刊:
影响因子:
6.2
通讯作者:
Guymon CA
Guymon CA
中科院分区:
化学2区
文献类型:
--
作者:
Leigh BL;Cheng E;Xu L;Andresen C;Hansen MR;Guymon CA

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Developing materials that reduce or eliminate fibrosis encapsulation of neural prosthetic implants could significantly enhance implant fidelity by improving the tissue/electrode array interface. Here, we report on the photografting and patterning of two zwitterionic materials, sulfobetaine methacrylate (SBMA) and carboxybetaine methacrylate (CBMA) for controlling the adhesion and directionality of cells relevant to neural prosthetics. CBMA and SBMA polymers were photopolymerized and grafted on glass surfaces then characterized by X-ray photoelectron spectroscopy, water contact angle, and protein adsorption. Micropatterned surfaces were fabricated with alternating zwitterionic and uncoated bands. Fibroblasts, cells prevalent in fibrotic tissue, almost exclusively migrate and grow on uncoated bands with little to no cells present on zwitterionic bands, especially for CBMA-coated surfaces. Astrocytes and Schwann cells showed similarly low levels of cell adhesion and morphology changes when cultured on zwitterionic surfaces. Additionally, Schwann cells and inner ear spiral ganglion neuron neurites aligned well to zwitterionic patterns.
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