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Mathematical Modeling of Planar Cell Polarity to Understand Domineering Nonautonomy
Keith Amonlirdviman,1Narmada A. Khare,2David R. P. Tree,2Wei-Shen Chen,2Jeffrey D. Axelrod,2*Claire J. Tomlin1*
Planar cell polarity (PCP) signaling generates subcellular asymmetryalong an axis orthogonal to the epithelial apical-basal axis.Through a poorly understood mechanism, cell clones that havemutations in some PCP signaling components, including some,but not all, alleles of the receptor frizzled, cause polaritydisruptions of neighboring wild-type cells, a phenomenon referredto as domineering nonautonomy. Here, a contact-dependent signalinghypothesis, derived from experimental results, is shown by reaction-diffusion,partial differential equation modeling and simulation to fullyreproduce PCP phenotypes, including domineering nonautonomy,in the Drosophila wing. The sufficiency of this model and theexperimental validation of model predictions reveal how specificprotein-protein interactions produce autonomy or domineeringnonautonomy.
1 Department of Aeronautics and Astronautics, Stanford University, Stanford, CA 943054035, USA. 2 Department of Pathology, Stanford University School of Medicine, Stanford, CA 943055324, USA.
* These authors contributed equally to this work.
To whom correspondence should be addressed. E-mail: tomlin{at}stanford.edu (C.J.T.); jaxelrod{at}stanford.edu (J.D.A.)