Polarized Epithelial Cells
Polarized Epithelial Cells - Related Videos
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.
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.
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
0 Views •
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...
11:46
Ex Vivo Culture of Primary Human Fallopian Tube Epithelial Cells
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Cited by 29 •
2011
The fallopian tube (FT) is emerging as an alternative site of origin for serous ovarian carcinoma (SOC). This protocol describes a novel method for the isolation and ex vivo culture of fallopian tube epithelial cells. This system recapitulates the in vivo epithelium and allows the study of SOC pathogenesis.
FAQs
Polarity is maintained through coordinated positioning of membrane proteins, cytoskeletal structures, and junctional complexes. These components establish distinct apical and basolateral domains, so epithelial cells can direct transport and communication according to surface. When their organization changes, barrier selectivity and tissue regulation can also change. This makes polarity a useful indicator of epithelial function in infection research.
Tight junctions separate apical from basolateral membrane domains while controlling paracellular transport, meaning movement between neighboring cells rather than through them. Their organization helps determine which substances can pass through the epithelial barrier. Studying tight junction behavior therefore connects cell polarity with barrier selectivity, tissue protection, and the ability of microbes to cross epithelial surfaces.
Membrane proteins and cytoskeletal structures help establish and preserve the unequal organization of epithelial cell surfaces. Their coordinated distribution supports the separation of apical and basolateral functions and works together with junctional complexes. If this organization is altered, epithelial transport, communication with surrounding environments, and overall tissue function may be affected.
Disruption of epithelial polarity can weaken the organized barrier that separates external from internal environments and can alter tissue function. These changes may affect how microbes cross epithelial surfaces and how cells communicate with immune processes. Because polarized epithelia also release inflammatory signals, polarity changes can influence both pathogen movement and the character of host responses.
Researchers use these cells to model mucosal barriers found in the intestine, airway, and kidney. Within such models, they can examine regulated nutrient or ion transport, barrier behavior, pathogen interactions, and inflammatory signaling. Comparing organized cells with cells showing altered polarity helps connect structural changes to microbial crossing, tissue dysfunction, and immune consequences.
Studies can show how epithelial organization supports selective transport, barrier control, pathogen detection, and communication with immune systems. They can also reveal whether altered polarity accompanies microbial passage or impaired tissue function. This information is relevant across intestinal, airway, and kidney contexts, where epithelial surfaces help regulate exchanges between external surroundings and internal tissues.