Techniques for measuring cell-mediated cytotoxicity
Measuring Cell Viability / Cytotoxicity
... Therefore, cell death assays based on lactate dehydrogenase (LDH) activity are more reliable than other enzyme-based cell death ...viable cell to determine cell viability with a colorimetric ...
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Measuring Cell Viability/Cytotoxicity: Cell Counting Kit-F
... The Cell Counting Kit-F is a fluorometic assay for the determination of viable cell ...the cell membrane and is hydrolized by the esterase in the cell to be converted to calcein, a ...
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In vitro cell mediated cytotoxicity in primary biliary cirrhosis and chronic hepatitis Dysfunction of spontaneous cell mediated cytotoxicity in primary biliary cirrhosis
... target cell specificity of peripheral blood lymphocytes from selected patients with primary biliary cirrhosis and hepatitis B surface antigen-negative chronic hepatitis were investigated using 51Cr-labeled human ...
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Inhibition of NK cell-mediated Cytotoxicity by Tubular Epithelial Cell Expression of Clr Proteins
... increased cytotoxicity against TEC lacking Clr-b/-f expression, highlighting that change in signalling from a single inhibitory Clr protein is not sufficient to affect NK cell activation against ...NK ...
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Human Monocyte Antibody Dependent Cell Mediated Cytotoxicity to Tumor Cells
... competing nonspecific monomeric immunoglobulin and by the ability of monocytes in “innocent bystander” experiments to lyse antibody-coated targets but not nonantibody- coated target cells. Evidence that monocytes were ...
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Enhancement of antibody-dependent cell mediated cytotoxicity: a new era in cancer treatment
... Protein engineering focused on optimizing the capacity of the Fc region of the mAb to bind Fc γ Rs is another route to enhancing ADCC effector functions. By generating Fc variants with greater affinity to Fc γ Rs, ...
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In vitro enhancement of human natural cell-mediated cytotoxicity by purified influenza virus glycoproteins.
... Natural killer cells are responsible for the interferon production induced in human lymphocytes by tumor cell contact. Antiviral activity induced by culturing lymphocytes with tumor- der[r] ...
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Antibody-Dependent Cell-Mediated Cytotoxicity in Simian Immunodeficiency Virus-Infected Rhesus Monkeys
... We have shown that SIV Env gp130-coated target cells are more sensitive than VSVg Env-pseudotyped SIVmac239-in- fected or SIVmac251-infected target cells for detection of ADCC. This can be explained, at least in part, by ...
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In-vitro cytotoxicity of java tea mediated selenium nanoballs against L6 cell lines
... Biogenic synthesis of Se nanoparticles is frequently achieved by reduction of selenate/selenite in presence of bacterial proteins or plant extracts containing phenols, flavonoids amines, alcohols, proteins and aldehydes. ...
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HER2-specific immunoligands engaging NKp30 or NKp80 trigger NK-cell-mediated lysis of tumor cells and enhance antibody- dependent cell-mediated cytotoxicity
... natural cytotoxicity were significantly lower than surface amounts of FcγRIIIa, which upon engagement by an antibody produced the strongest cytotoxic ...tumor cell binding and the low binding affinity to ...
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RB mutation and RAS overexpression induce resistance to NK cell-mediated cytotoxicity in glioma cells
... The mRNA expression of four other ligands for NKG2D cell receptors was also assessed (mult1, H60a, H60b, and H60c). These ligands are poorly expressed on most normal cells, but are upregulated on tumor cells, ...
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Cell-mediated cytotoxicity against targets bearing Sendai virus glycoproteins in the absence of viral infection.
... Ordinary P815 cells, P815 cells modified by the addition of glycoproteins, P815 cells infected with Sendai virus, and Yac-1 cells were used as targets.. After incubation at 37°C for 1 h,[r] ...
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The Granzyme B ELISPOT assay: an alternative to the 51Cr release assay for monitoring cell mediated cytotoxicity
... Conclusions In our laboratory, the GrB ELISPOT assay was shown to accurately measure stimulated GrB secretion by various CTL effector cells. The precursor frequency of antigen-spe- cific T-cells could be reliably ...
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Effector cell mediated cytotoxicity measured by intracellular Granzyme B release in HIV infected subjects
... T cell receptor will bind to the labeled tetramers and can be quantified by flow ...T cell responses, are thought to explain data correlating different HLA alleles with different rates of clinical ...
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Role of gamma-secretase in human umbilical-cord derived mesenchymal stem cell mediated suppression of NK cell cytotoxicity
... MSC-NK cell co- cultures and observed that blocking IL-1β indeed resulted in a decrease in COX-2 ...direct cell-cell contact a pre-requisite for attaining effective con- centrations for ...
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Cell proliferation and cytotoxicity assays
... ATP assay is based on monitoring of ATP levels via bio- luminescent detection. Added natural firefly enzyme lu- ciferase and luciferin react with cellular ATP and cause the production of certain level of light that is ...
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Evidence by reactivity with hybridoma antibodies for a probable myeloid origin of peripheral blood cells active in natural cytotoxicity and antibody dependent cell mediated cytotoxicity
... In this study, the relationship of cytotoxic effector cells to T cells was more precisely determined by isolating the FcR- bearing effector cells in both the erythrocyte rosetting E+ and[r] ...
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Comparison of Antibody-Dependent Cell-Mediated Cytotoxicity and Virus Neutralization by HIV-1 Env-Specific Monoclonal Antibodies
... relevant to blocking viral infectivity are exposed on the surfaces of cells infected with lab-adapted viruses that render them suscepti- ble to ADCC. The striking difference in the susceptibility of HIV-1 NL4-3 - ver- ...
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Identification of Dominant Antibody-Dependent Cell-Mediated Cytotoxicity Epitopes on the Hemagglutinin Antigen of Pandemic H1N1 Influenza Virus
... of cell, the amount of labeling, and activity ...or cell-based assays to detect dying or dead target cells by fluorometry or flow ...dying cell and intercalate with DNA, whereas the assays based on ...
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p53-Independent Endoplasmic Reticulum Stress-Mediated Cytotoxicity of a Newcastle Disease Virus Strain in Tumor Cell Lines
... human cell lines, determined their relative sensitivities to MTH-68/H, and tried to identify molecular events responsible for the cellular responses to MTH-68/H ...cancer cell has a fundamental effect on ...
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