Intercellular Contact
Mostrando 1-12 de 92 artigos, teses e dissertações.
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1. Intercellular contact-dependent survival of human A549, NCI-H596 and NCI-H520 non-small cell lung carcinoma cell lines
In the present study, we examined the relationship between cell phenotype and cell survival of three human non-small cell lung carcinoma cell lines (A549, NCI-H596 and NCI-H520). Cells in exponential growth at various densities were incubated for 24 h at 37ºC in a 5% CO2 humidified atmosphere and then exposed to UV radiation for 1 min (256 nm, 40 W, source-
Publicado em: 2010
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2. The in vitro cytopathology of a porcine and the simian (SA-11) strains of rotavirus
Rotaviruses have been implicated as the major causal agents of acute diarrhoea in mammals and fowls. Experimental rotavirus infection have been associated to a series of sub-cellular pathologic alterations leading to cell lysis which may represent key functions in the pathogenesis of the diarrhoeic disease. The current work describes the cytopathic changes i
Memórias do Instituto Oswaldo Cruz. Publicado em: 2004-05
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3. Root-shoot communication in contrasting Lycopersicon genotypes under stress caused by water deficit. / Sinalização entre os sistemas radiculares e caulinares em genótipos contrastantes de Lycopersicon sob estresse por deficiência hídrica.
Multicellular plants are complex organisms and their orderly development requires an extraordinary measure of coordination between cells. In order to coordinate their activities, cells must be able to communicate with each other, often at some distance. The principal means of intercellular communication are the hormones, chemical messengers that carry inform
Publicado em: 2004
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4. Intercellular contact-dependent survival of human A549, NCI-H596 and NCI-H520 non-small cell lung carcinoma cell lines
In the present study, we examined the relationship between cell phenotype and cell survival of three human non-small cell lung carcinoma cell lines (A549, NCI-H596 and NCI-H520). Cells in exponential growth at various densities were incubated for 24 h at 37ºC in a 5% CO2 humidified atmosphere and then exposed to UV radiation for 1 min (256 nm, 40 W, source-
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-08
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5. Intercellular Contact and Cell-Surface Galactosyl Transferase Activity
Evidence is presented suggesting the presence of galactosyl transferases and galactosyl acceptors on the outer surfaces of intact Balb/c 3T3 cells. In addition, the data indicate that these transferases may only be capable of transferring galactose from uridine diphosphate galactose to galactosyl acceptors on adjacent cells after intercellular contact is mad
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6. Junctional plasma membrane domains isolated from aggregating Dictyostelium discoideum amebae.
Regions of plasma membrane involved in Dictyostelium discoideum intercellular adhesion resist solubilization with the nonionic detergent Triton X-100. Electron microscopy shows that these regions of the plasma membrane adhere to each other, forming many bi- and multilamellar structures. NaDodSO4/polyacrylamide gels of these regions contain major polypeptides
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7. Monoclonal antibodies against contact sites A of Dictyostelium discoideum: detection of modifications of the glycoprotein in tunicamycin-treated cells
Tunicamycin acts on cell aggregation in Dictyostelium discoideum by changing cell movement and by inhibiting the EDTA-stable type of intercellular adhesion. Tunicamycin-treated cells show unco-ordinated pseudopodial activity such that pseudopods are simultaneously extended from all parts of the cell surface, and the cells are unable to move in straight paths
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8. Infiltrating CTLs in Human Glioblastoma Establish Immunological Synapses with Tumorigenic Cells
The immunological synapse between T cells and tumor cells is believed to be important for effective tumor clearance. However, the immunological synapse has never been imaged or analyzed in detail in human tissue. In this work, intercellular interactions between T cells and tumor cells were analyzed in detail in human glioblastoma. After characterization of t
American Society for Investigative Pathology.
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9. Visualization of cell-cell contact during conjugation in Streptococcus faecalis.
Conjugal transfer of an antibiotic resistance plasmid in Streptococcus faecalis was associated with direct intercellular connections between chains of streptococci in the absence of either pili or fimbriae.
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10. Modulation of intercellular adherens-type junctions and tyrosine phosphorylation of their components in RSV-transformed cultured chick lens cells.
Transformation of cultured chick lens epithelial cells with a temperature-sensitive mutant of Rous sarcoma virus (tsRSV) leads to radical changes in cell shape and interactions. When cultured at the restrictive temperature (42 degrees C), the transformed cells largely retained epithelial morphology and intercellular adherens junctions (AJ), whereas on switch
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11. Cell shape controls terminal differentiation of human epidermal keratinocytes.
Cultures of human epidermal keratinocytes provide a useful experimental model with which to study the factors that regulate cell proliferation and terminal differentiation. One situation that is known to trigger premature terminal differentiation is suspension culture, when keratinocytes are deprived of substratum and intercellular contact. We have now inves
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12. A cell surface desmosome-associated component: identification of tissue-specific cell adhesion molecule.
Autoantibodies in the serum of patients suffering the blistering skin disease pemphigus vulgaris recognize a 140-kDa glycoprotein (GP) present in enriched fractions of bovine tongue epidermal desmosomes. Immunofluorescence observations of cryostat sections of bovine tongue epidermis reveal that affinity-purified rabbit antibodies to the 140-kDa GP generate a