Gradient lithography of engineered proteins to fabricate 2D and 3D cell culture microenvironments
Journal Article
·
· Biomedical Microdevices
- Univ. of California, Berkeley, CA (United States). NSF Nanoscale Science and Engineering Center (NSEC); Univ. of California, Berkeley, CA (United States). Applied Science and Technology Graduate Program; OSTI
- Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
- Univ. of California, Berkeley, CA (United States). NSF Nanoscale Science and Engineering Center (NSEC)
- Stanford Univ., CA (United States). Dept. of Materials Science and Engineering; Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology
- Univ. of California, Berkeley, CA (United States). NSF Nanoscale Science and Engineering Center (NSEC); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Spatial patterning of proteins is a valuable technique for many biological applications and is the prevailing tool for defining microenvironments for cells in culture, a required procedure in developmental biology and tissue engineering research. However, it is still challenging to achieve protein patterns that closely mimic native microenvironments, such as gradient protein distributions with desirable mechanical properties. By combining projection dynamic mask lithography and protein engineering with non-canonical photosensitive amino acids, we demonstrate a simple, scalable strategy to fabricate any user-defined 2D or 3D stable gradient pattern with complex geometries from an artificial extracellular matrix (aECM) protein. We show that the elastic modulus and chemical nature of the gradient profile are biocompatible and allow useful applications in cell biological research.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Institutes of Health (NIH); National Science Foundation (NSF); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1816134
- Journal Information:
- Biomedical Microdevices, Journal Name: Biomedical Microdevices Journal Issue: 5 Vol. 11; ISSN 1387-2176
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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