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Lithographic patterning of photoreactive cell-adhesive proteins

  • Isaac S. Carrico
  • , Stacey A. Maskarinec
  • , Sarah C. Heilshorn
  • , Marissa L. Mock
  • , Julie C. Liu
  • , Paul J. Nowatzki
  • , Christian Franck
  • , Guruswami Ravichandran
  • , David A. Tirrell
  • California Institute of Technology

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

We describe a novel, simple method for the photolithographic patterning of cell-adhesive proteins. Intrinsically photoreactive proteins are synthesized in Escherichia coli through incorporation of the non-canonical, photosensitive amino acid para-azidophenylalanine. Upon ultraviolet irradiation at 365 nm, proteins form cross-linked films with elastic moduli that can be tuned by varying the concentration of photoreactive amino acid in the expression medium. Films of these proteins can be directly patterned using standard photolithographic techniques. We demonstrate the utility of this method of protein patterning by creating stable arrays of fibroblast cells on an engineered protein "photoresist".

Original languageEnglish
Pages (from-to)4874-4875
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number16
DOIs
StatePublished - Apr 25 2007

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