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Title: Segmenting Growth of Endothelial Cells in 6-Well Plates on an Orbital Shaker for Mechanobiological Studies
Authors: Pang, Kuin T.
Ghim, Mean
Arshad, Mehwish
Wang, Xiaomeng
Weinberg, Peter D.
Keywords: Science::Medicine
Issue Date: 2021
Source: Pang, K. T., Ghim, M., Arshad, M., Wang, X. & Weinberg, P. D. (2021). Segmenting Growth of Endothelial Cells in 6-Well Plates on an Orbital Shaker for Mechanobiological Studies. Journal of Visualized Experiments (JoVE), 2021(172), 61817-.
Project: NMRC/OFLCG/001/2017 
Journal: Journal of Visualized Experiments (JoVE) 
Abstract: Shear stress imposed on the arterial wall by the flow of blood affects endothelial cell morphology and function. Low magnitude, oscillatory and multidirectional shear stresses have all been postulated to stimulate a pro-atherosclerotic phenotype in endothelial cells, whereas high magnitude and unidirectional or uniaxial shear are thought to promote endothelial homeostasis. These hypotheses require further investigation, but traditional in vitro techniques have limitations, and are particularly poor at imposing multidirectional shear stresses on cells. One method that is gaining increasing use is to culture endothelial cells in standard multi-well plates on the platform of an orbital shaker; in this simple, low-cost, high-throughput and chronic method, the swirling medium produces different patterns and magnitudes of shear, including multidirectional shear, in different parts of the well. However, it has a significant limitation: cells in one region, exposed to one type of flow, may release mediators into the medium that affect cells in other parts of the well, exposed to different flows, hence distorting the apparent relation between flow and phenotype. Here we present an easy and affordable modification of the method that allows cells to be exposed only to specific shear stress characteristics. Cell seeding is restricted to a defined region of the well by coating the region of interest with fibronectin, followed by passivation using passivating solution. Subsequently, the plates can be swirled on the shaker, resulting in exposure of cells to well-defined shear profiles such as low magnitude multidirectional shear or high magnitude uniaxial shear, depending on their location. As before, the use of standard cell-culture plasticware allows straightforward further analysis of the cells. The modification has already allowed the demonstration of soluble mediators, released from endothelium under defined shear stress characteristics, that affect cells located elsewhere in the well.
ISSN: 1940-087X
DOI: 10.3791/61817
Schools: Lee Kong Chian School of Medicine (LKCMedicine) 
Organisations: Institute of Molecular and Cell Biology, A*STAR
Singapore Eye Research Institute
Rights: © 2021 JoVE Journal of Visualized Experiments. All rights reserved. This paper was published in JoVE Journal of Visualized Experiments and is made available with permission of JoVE Journal of Visualized Experiments.
Fulltext Permission: embargo_20230610
Fulltext Availability: With Fulltext
Appears in Collections:LKCMedicine Journal Articles

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