Planar Cell Polarity
Planar Cell Polarity - Related Videos
07:07
Evaluation of Planar-Cell-Polarity Phenotypes in Ciliopathy Mouse Mutant Cochlea
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Cited by 8 •
2016
Primary cilia influence various signaling pathways. The mammalian cochlea is ideal for examining planar cell polarity (PCP) signaling. Cilia dysfunction affects cochlear outgrowth, cellular patterning and hair cell orientation, readouts of PCP. Our goal is to analyze PCP signaling in mouse cochlea via phenotypic analysis, immunohistochemistry and scanning electron microscopy.
09:25
An Endothelial Planar Cell Model for Imaging Immunological Synapse Dynamics
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Cited by 3 •
2015
Adaptive immunity is controlled by dynamic 'immunological synapses' formed between T cells and antigen presenting cells. This protocol describes methods for investigating endothelial cells both as understudied physiologic APCs and as a novel type of 'planar cellular APC model'.
03:37
Molecular Shape and Polarity
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2020
Dipole Moment of a Molecule Polar covalent bonds connect two atoms with differing electronegativities, leaving one atom with a partial positive charge (δ+) and the other atom with a partial negative charge (δ–), as the electrons are pulled toward the more electronegative atom. This separation of charge gives rise to a bond dipole moment. The magnitude of a bond dipole moment is represented by the Greek letter mu (µ) and is given by the formula shown here, where Q is the magnitude of the...
04:37
Generation of Human Induced Pluripotent Stem Cell-derived Planar Hair-bearing Skin Organoids Using an Air-Liquid Interface Culture System
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Cited by 1 •
2025
This protocol outlines a method for producing skin organoids containing hair follicles from human induced pluripotent stem cells using a planar, physiologically relevant air-liquid interface culture system to replicate skin architecture and function.
09:38
Analyzing the Function of Small GTPases by Microinjection of Plasmids into Polarized Epithelial Cells
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Cited by 5 •
2011
This article details the procedures involved in overexpression and analysis of small GTPases in polarized epithelial cells using microinjection technique.
FAQs
These core proteins become asymmetrically distributed across the sides of neighboring cells, creating coordinated molecular differences within the tissue plane. Their polarized arrangement allows cells to distinguish one direction from another rather than responding identically on all sides. This spatial organization helps align cytoskeletal behavior, cell shape, and movement with the larger pattern of the developing tissue.
Apical-basal polarity organizes a cell from its upper or apical surface to its lower or basal surface, whereas planar cell polarity coordinates orientation among cells within the same tissue layer. The two systems therefore describe different spatial axes. Studying both is important because tissues require vertical organization and coordinated in-plane alignment to form ordered multicellular structures.
Planar cell polarity signaling connects asymmetric protein distribution with cytoskeletal organization, changes in cell shape, and directional movement. These linked behaviors enable groups of cells to rearrange or orient together rather than acting independently. The resulting coordination is especially relevant when tissues extend, align repeated structures, or position sensory elements in a consistent directional pattern.
During convergent extension, planar cell polarity helps coordinate cellular rearrangements that shape developing tissue. Directional movement and controlled changes in cell shape allow a tissue to become narrower in one dimension while extending in another. This application shows why polarity is a tissue-level process: the outcome depends on coordinated behavior across many cells, not simply on isolated cellular orientation.
Planar cell polarity provides directional coordination for structures that must be arranged consistently across a tissue. In hair follicles, this signaling contributes to aligned orientation, while in sensory tissues it helps establish patterned placement of sensory structures. These examples demonstrate that the pathway can organize repeated multicellular features and preserve directional order across broad areas.
Neural tube development requires cells to coordinate their orientation and movement within the developing tissue. Planar cell polarity contributes to this organization by linking polarized protein distribution with cytoskeletal and shape changes. Disruption of that coordination can interfere with normal tissue patterning, making the system useful for investigating how directional cellular behaviors support nervous-system development.
Investigating planar cell polarity reveals how molecular asymmetry is translated into organized cell shape and tissue architecture. Because the system participates in developmental processes and organ patterning, altered signaling can help explain defects in structures such as the kidney. Research in this area connects cell-level polarity mechanisms with tissue-scale abnormalities and broader developmental disease context.