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Fabrication of Micro Patterned Fibronectin for Studying Adhesion and Alignment Behavior of Human Dermal Fibroblasts
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  • Fabrication of Micro Patterned Fibronectin for Studying Adhesion and Alignment Behavior of Human Dermal Fibroblasts
  • Fabrication of Micro Patterned Fibronectin for Studying Adhesion and Alignment Behavior of Human Dermal Fibroblasts
저자명
Lee. Seung-Jae,Son. Young-Sook,Kim. Chun-Ho,Choi. Man-Soo
간행물명
Macromolecular research
권/호정보
2007년|15권 4호|pp.348-356 (9 pages)
발행정보
한국고분자학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The aim of this study was to fabricate a submicro-and micro-patterned fibronectin coated wafer for a cell culture, which allows the positions and dimensions of the attached cells to be controlled. A replica molding was made into silicon via a photomask in quartz, using E-beam lithography, and then fabricated a polydimethylsiloxane stamp using the designed silicon mold. Hexadecanethiol $[HS(CH_2){_{15}}CH_3]$, adsorbed on the raised plateau of the surface of polydimethylsiloxane stamp, was contact-printed to form self-assembled monolayers (SAMs) of hexadecanethiolate on the surface of an Au-coated glass wafer. In order to form another SAM for control of the surface wafer properties, a hydrophilic hexa (ethylene glycol) terminated alkanethiol $[HS(CH_2){_{11}}(OCH_2CH_2){_6}OH]$ was also synthesized. The structural changes were confirmed using UV and $^1H-NMR$ spectroscopies. A SAM terminated in the hexa(ethylene glycol) groups was subsequently formed on the bare gold remaining on the surface of the Aucoated glass wafer. In order to aid the attachment of cells, fibronectin was adsorbed onto the resulting wafer, with the pattern formed on the gold-coated wafer confirmed using immunofluorescence staining against fibronectin. Fibronectin was adsorbed only onto the SAMs terminated in the methyl groups of the substrate. The hexa (ethylene glycol)-terminated regions resisted the adsorption of protein. Human dermal fibroblasts (P=4), obtained from newborn foreskin, only attached to the fibronectin-coated, methyl-terminated hydrophobic regions of the patterned SAMs. N-HDFs were more actively adhered, and spread in a pattern spacing below $14{mu}m$, rather than above $17{mu}m$, could easily migrate on the substrate containing spacing of $10{mu}m$ or less between the strip lines.