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Analysis of Organelle Positioning Using Patterned Microdevices.
Current Protocols in Cell Biology 2018 November 16
The consequences of alterations in the distribution of intracellular organelles, observed in many diseases, are often not clear. Intracellular organelles alter their morphology and positioning to regulate cell homeostasis and function. We outline how organelle positioning can be studied employing a density-based analysis of 3D images applied to cells that show similar cellular geometries. Quantification is facilitated by the use of single cells seeded on micropatterned substrates that provide cues for controlled cell spreading. This minimal system mimics the reproducible distribution of organelles typically observed in tissues, simplifying image analysis and minimizing the number of cells required for the observation of robust phenotypes. Here we provide guidelines for how the majority of organelles can be efficiently analyzed in cells seeded on adhesive micropatterns. We exemplify how alterations in the positioning of different organelles as a result of the perturbation of the cytoskeleton or associated motor proteins can be efficiently quantified. © 2018 by John Wiley & Sons, Inc.
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