Cell-to-cell Contact
Cell-to-cell Contact - Related Videos
11:29
Development of an Insert Co-culture System of Two Cellular Types in the Absence of Cell-Cell Contact
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Cited by 31 •
2016
In multicellular organisms, secreted soluble factors elicit responses from different cell types as a result of paracrine signaling. Insert co-culture systems offer a simple way to assess the changes mediated by secreted soluble factors in the absence of cell-cell contact.
08:43
A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts
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Cited by 26 •
2018
This protocol describes a fluorescence fluctuation spectroscopy-based approach to investigate interactions among proteins mediating cell-cell interactions, i.e. proteins localized in cell junctions, directly in living cells. We provide detailed guidelines on instrument calibration, data acquisition and analysis, including corrections to possible artefact sources.
01:37
Contact-Dependent Cell Communication
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2026
Contact-dependent cell communication, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas plasmodesmata perform a similar function in plants.Juxtacrine SignalingJuxtacrine signaling...
13:48
Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
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Cited by 20 •
2012
Raman spectroscopy is a suitable technique for the non-contact, label-free analysis of living cells, tissue-engineered constructs and native tissues. Source-specific spectral fingerprints can be generated and analyzed using multivariate analysis.
03:42
Fluorescence Fluctuation Spectroscopy to Study Protein Interaction at Cell Contacts
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2025
This video demonstrates the use of fluorescence fluctuation spectroscopy to detect the interaction among cell surface proteins at cell-cell contacts. By expressing the transmembrane adhesion receptor of interest labeled with a fluorescent protein and mixing two different cell populations harboring two spectrally separated fluorescent labels, the trans-interaction between the receptors of two neighboring cells with different-colored fluorescence is assessed via cross-correlation in the...
FAQs
Each junction type supports a different tissue function. Cadherin-based adherens junctions connect neighboring cells to cytoskeletal networks, while tight junctions contribute to barrier function. Gap junctions permit ions and small molecules to pass between cells, and receptor-ligand interactions transmit information across adjoining membranes. Comparing these mechanisms helps explain how tissues combine physical organization with coordinated cellular activity.
Cadherin-based adherens junctions provide a physical link between neighboring cells and their cytoskeletal networks. This connection helps maintain tissue structure while allowing contact to influence cell polarity, migration, proliferation, and differentiation. Because the junction links membrane-associated adhesion to internal cellular organization, changes in its activity can affect both tissue architecture and cell behavior.
Tight junctions and gap junctions support distinct forms of coordination. Tight junctions help establish tissue barriers, whereas gap junctions create a route for ions and small molecules to move between cells. The first mechanism primarily supports separation and barrier integrity; the second supports direct exchange. Together, they allow neighboring cells to remain organized while communicating through different physical pathways.
Receptor-ligand interactions allow one cell to influence an adjacent cell through specific molecular recognition at their shared interface. Unlike contacts that primarily reinforce physical attachment or form barriers, these interactions provide a signaling mechanism that can coordinate cellular behavior. In biological tissues, that coordination is relevant to processes such as differentiation, proliferation, immune responses, and wound repair.
Researchers examine cell-to-cell contact to connect junctional mechanisms with tissue-level outcomes. In developmental biology, the focus can include how contact contributes to polarity, migration, proliferation, and differentiation. In tissue biology, studies can address structural maintenance and barrier function. This approach helps relate molecular interactions between neighboring cells to the formation and repair of organized tissues.
Direct contact provides a basis for neighboring cells to coordinate behavior during immune responses and wound repair. Adhesion mechanisms help maintain or reorganize tissue structure, while receptor-ligand interactions support information exchange between contacting cells. Examining these processes can clarify how cellular interactions contribute to tissue responses after injury and how coordinated behavior supports restoration of tissue organization.
Cell-to-cell contact is relevant to cancer metastasis because altered interactions between neighboring cells can be examined alongside changes in tissue organization and cell behavior. In tissue engineering and regenerative biology, the same principles guide interest in maintaining structure, coordinating cells, and supporting differentiation. These applications connect contact mechanisms with both disease analysis and efforts to develop or restore tissues.