Fabrication of polymeric substrates with micro- and nanoscale topography bioimprinted at progressive cell morphologies

Type of content
Journal Article
Thesis discipline
Degree name
Publisher
A V S AMER INST PHYSICS
Journal Title
Journal ISSN
Volume Title
Language
English
Date
2012
Authors
Murray LM
Nock, Volker
Alkaisi, Maan
Lee JJM
Woodfield TBF
Abstract

This work introduces a novel process for the fabrication of polymer cell culture substrates containing physical topography based on timepoint specific cell phenotype replicas. Bioimprinting of human nasal chondrocyte at different cell adhesion time points was used to demonstrate the nanoscale replication process. Atomic force microscopy confirmed morphology progression at 1, 6, 12, and 24 h timepoints corresponding to dedifferentiation of the chondrocytes to fibroblast-like phenotype. Topographical analysis of the imprinted substrates yielded an inverse relationship between surface coverage, increasing from 11 to 87, and maximum average pattern depth, decreasing from 1.2 μm to 430 nm. Methacrylate bioimprint features were successively replicated into a transitional polydmethylsiloxane mold used as an intermediate for further replication into polystyrene by a high-throughput embossing method. Substrates fabricated with this process have applications in stem cell engineering, regenerative medicine, and implantable devices. © 2012 American Vacuum Society.

Description
Citation
Murray LM, Nock V, Alkaisi MM, Lee JJM, Woodfield TBF (2012). Fabrication of polymeric substrates with micro- and nanoscale topography bioimprinted at progressive cell morphologies. Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 30(6).
Keywords
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Field of Research::06 - Biological Sciences::0601 - Biochemistry and Cell Biology::060106 - Cellular Interactions (incl. Adhesion, Matrix, Cell Wall)
Fields of Research::31 - Biological sciences::3101 - Biochemistry and cell biology::310104 - Cell neurochemistry
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