Cell Polarity Establishment
Cell Polarity Establishment - Related Videos
12:09
Establishing a Liquid-covered Culture of Polarized Human Airway Epithelial Calu-3 Cells to Study Host Cell Response to Respiratory Pathogens In vitro
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Cited by 25 •
2013
The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention.
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.
04:05
Differentiation and Polarization of Monocyte-Derived Cells into Macrophage-Like Cells
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2025
In this video, we demonstrate a procedure to induce the differentiation and polarization of peripheral blood-derived monocytes into M1 or M2 macrophages. Incubation with granulocyte-macrophage colony-stimulating factor, lipopolysaccharide, and interferon‐gamma yields pro-inflammatory M1 macrophages, while incubation with macrophage colony-stimulating factor and interleukin-4 induces anti-inflammatory M2 macrophage production.
01:01
Group Polarization
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2020
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition. The phenomenon of group polarization explains many actions taken by groups that would not...
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.
FAQs
Cell polarity establishment starts when extracellular or intracellular cues activate signaling in a restricted region of the cell. Those localized signals reposition polarity proteins, creating spatially distinct molecular domains rather than a uniform distribution. This initial asymmetry provides an organizing cue for later cytoskeletal remodeling and targeted membrane trafficking, linking the original signal to directional cellular behavior.
Polarity proteins organize the cell’s spatial information, while actin and microtubule cytoskeletons translate that information into physical organization. Membrane trafficking then directs cellular materials toward specific regions. Because these systems operate together, a localized signal can influence the placement of components and activities across the cell, supporting coordinated growth, movement, signaling, or division.
Coordination prevents localized signals from remaining isolated events. Repositioned polarity proteins, cytoskeletal changes, and directed trafficking reinforce one another to maintain distinct cellular regions and organize activity around them. This integrated mechanism allows cells to act directionally instead of responding uniformly throughout their surface, which is essential when growth, movement, signaling, or division must occur in a controlled spatial pattern.
In epithelial biology, spatial organization within individual cells helps coordinate how cells form organized tissues. Polarity-related signaling, cytoskeletal arrangement, and membrane trafficking establish distinct cellular regions that can support consistent tissue architecture. Studying these events therefore connects molecular asymmetry inside single cells with the larger-scale organization required for epithelial tissue formation.
Neuronal development and cell migration require cells to organize activities directionally. Cell polarity establishment supplies the spatial coordination needed for such behavior by positioning regulatory proteins, restructuring actin and microtubules, and directing membrane delivery to selected regions. These mechanisms help explain how cells develop organized forms or move in a defined direction within biological systems.
Investigating cell polarity establishment can reveal how failures in spatial regulation affect biological organization. Because polarity supports tissue formation, neuronal development, migration, and asymmetric cell division, defects in its control may disrupt these processes. Such findings help connect altered molecular organization with developmental abnormalities and disease, providing context for understanding how cellular regulation influences organismal biology.