NDLI: Attachment and response of human fibroblast and breast cancer cells to three dimensional silicon microstructures of different geometries

Content Provider	Springer Nature Link
Author	Nikkhah, Mehdi Strobl, Jeannine S. Agah, Masoud
Copyright Year	2008
Abstract	The paper reports the development of three dimensional (3-D) silicon microstructures and the utilization of these microenvironments for discriminating between normal fibroblast (HS68) and breast cancer cells (MDA-MB-231). These devices consist of arrays of microchambers connected with channels and were fabricated using a single-mask, single-isotropic-etch process. The behavior and response of normal fibroblast and breast cancer cells, two key cell types in human breast tumor microenvironments, were explored in terms of adhesion and growth in these artificial 3-D microenvironments having curved sidewalls. Breast cancer cells formed stable adhesions with the curved sidewalls however fibroblasts stretched and elongated their cytoskeleton and actin filaments inside the microchambers. Statistical analysis revealed that fibroblast cells grew on both flat silicon surfaces and inside the microchambers regardless of microchamber depth. However, the localization of breast cancer cells in these same substrates was dependent on the microchamber depth. After 72 h in culture, the ratio of the number of breast cancer cells on flat surfaces compared to breast cancer cells inside the microchambers was significantly decreased within the deeper microchambers; for microchambers having depths 88 μm less than 5% of the breast cancer cells grew on the flat surfaces. This behavior was sustained for 120 h, the longest time point examined. The results suggest that certain 3-D silicon microstructures have potential application as a tool to detect breast cancer cells and also as a platform for separating normal fibroblasts from breast cancer cells for cancer diagnosis applications.
Starting Page	429
Ending Page	441
Page Count	13
File Format	PDF
ISSN	13872176
Journal	Biomedical Microdevices
Volume Number	11
Issue Number	2
e-ISSN	15728781
Language	English
Publisher	Springer US
Publisher Date	2008-12-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MEMS Single mask Isotropic microchambers Cellular behavior Breast cancer Engineering Fluid Dynamics Nanotechnology Biophysics/Biomedical Physics Biomedical Engineering
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Molecular Biology Biomedical Engineering

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