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. 2017 Jun 26;7:4244. doi: 10.1038/s41598-017-03779-6

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Bright-field images of the disruption in the stable morphology with genetic alterations to the MCF-10A cells and morphologies of other breast tumor cell lines at the corners of the microgroove structures. Dotted lines represent the microgroove wall boundaries. (Scale bar, 20 μm) (b) Speed and (c) persistence length measurements of MCF-10A variants and other breast tumor cell lines on the flat surfaces and at the corners of the microgrooves. Numbers above the bars represent the quantitative effect of topography as the ratio between the groove and flat measurements. Error bars are SEM (N = 5 trials with 10–20 cells quantified per trial).