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ELISA Kit Natural Killer Cell Differentiation

Also showing ELISA Kit ELISA Natural Killer Cell Differentiation

$489
96 assays
1 Kit
CST’s PathScan® Phospho-Stat5 (Tyr694) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of Stat5a when phosphorylated at Tyr694 and Stat5b at Tyr699. A Phospho-Stat5 Mouse Antibody has been coated onto the microwells. After incubation with cell lysates, phospho-Stat5a (Tyr694) and phospho-Stat5b (Tyr699) proteins are captured by the coated antibody. Following extensive washing, a Stat5 Rabbit Detection Antibody is added to detect the captured phospho-Stat5a and phospho-Stat5b protein. Anti-rabbit IgG, HRP-linked antibody is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of absorbance for this developed color is proportional to the quantity of Stat5a phosphorylated at Tyr694 and Stat5b phosphorylated at Tyr699.Antibodies in kit are custom formulations specific to kit.
REACTIVITY
Human

Background: Stat5 is activated in response to a wide variety of ligands including IL-2, GM-CSF, growth hormone and prolactin. Phosphorylation at Tyr694 is obligatory for Stat5 activation (1,2). This phosphorylation is mediated by Src upon erythropoietin stimulation (3). Stat5 is constitutively active in some leukemic cell types (4). Phosphorylated Stat5 is found in some endothelial cells treated with IL-3, which suggests its involvement in angiogenesis and cell motility (5). Stat5a and Stat5b are independently regulated and activated in various cell types. For instance, interferon treatment predominantly activates Stat5a in U-937 cells and Stat5b in HeLa cells (6).

$489
96 assays
1 Kit
The PathScan® Total Axl Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of total Axl protein. An Axl mouse antibody has been coated on the microwells. After incubation with cell lysates, Axl protein (phospho and nonphospho) is captured by the coated antibody. Following extensive washing, an Axl rabbit antibody is added to detect captured Axl protein. Anti-rabbit IgG, HRP-linked antibody is then used to recognize the bound detection antibody. HRP substrate TMB is added to develop color. The magnitude of the absorbance for this developed color is proportional to the quantity of total Axl protein.Antibodies in kit are custom formulations specific to kit.
REACTIVITY
Human

Background: Axl, Sky, and Mer are three members of a receptor tyrosine kinase (RTK) family that share a conserved intracellular tyrosine kinase domain and an extracellular domain similar to those seen in cell adhesion molecules. These RTKs bind the vitamin K-dependent protein growth-arrest-specific 6 (Gas6), which is structurally related to the protein S anticoagulation factor (1). Upon binding to its receptor, Gas6 activates phosphatidylinositol 3-kinase (PI3K) and its downstream targets Akt and S6K, as well as NF-κB (2,3). A large body of evidence supports a role for Gas6/Axl signaling in cell growth and survival in normal and cancer cells (4).

$489
96 assays
1 Kit
PathScan® Total Tyro3 Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of Tyro3 protein. A Tyro3 Rabbit mAb has been coated onto the microwells. After incubation with cell lysates, Tyro3 protein (phospho and nonphospho) is captured by the coated antibody. Following extensive washing, a Tyro3 Mouse Detection mAb is added to detect the captured Tyro3 proteins. Anti-mouse IgG, HRP-linked antibody is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of optical density for this developed color is proportional to the quantity of total tyro3 protein.Antibodies in kit are custom formulations specific to kit.
REACTIVITY
Human

Background: Tyro3 is a receptor tyrosine kinase belonging to the TAM subfamily (Tyro3, Axl and Mer). All three members have similar domain structure composed of an extracellular region with 2 Ig-like domains, followed by 2 FNII-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase domain (1). The natural ligand for Tyro3, as well as Axl and Mer, is Gas6 (growth arrest-specific gene 6) (1,2). Expression pattern and target knockout data indicate an important role of Tyro3 in apoptotic cell phagocytosis of dendritic cells and macrophages (3), NK cell differentiation (4), reproductive neuron survival and migration (5), osteoclast stimulation (6,7), as well as cortical and hippocampal neuron function (8). Both MAPK and PI3K pathways have been suggested as downstream targets of Tyro3 activation (7,8). Tyro3 has also been shown to be correlated to melanoma tumorigenesis, likely through its reglulatory role in the expression of oncogenic microphthalmia-associated transcription factor (MITF) (9).

$489
96 assays
1 Kit
PathScan® Phospho-Tyro3 (panTyr) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of tyrosine-phosphorylated Mer protein. A Tyro3 Rabbit mAb has been coated onto the microwells. After incubation with cell lysates, Tyro3 protein (phospho and nonphospho) is captured by the coated antibody. Following extensive washing, a Phospho-Tyrosine Mouse Detection mAb is added to detect the captured phospho-Tyro3 proteins. Anti-mouse IgG, HRP-linked antibody is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of optical density for this developed color is proportional to the quantity of Tyro3 protein phosphorylated on tyrosine residues.Antibodies in kit are custom formulations specific to kit.
REACTIVITY
Human

Background: Tyro3 is a receptor tyrosine kinase belonging to the TAM subfamily (Tyro3, Axl and Mer). All three members have similar domain structure composed of an extracellular region with 2 Ig-like domains, followed by 2 FNII-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase domain (1). The natural ligand for Tyro3, as well as Axl and Mer, is Gas6 (growth arrest-specific gene 6) (1,2). Expression pattern and target knockout data indicate an important role of Tyro3 in apoptotic cell phagocytosis of dendritic cells and macrophages (3), NK cell differentiation (4), reproductive neuron survival and migration (5), osteoclast stimulation (6,7), as well as cortical and hippocampal neuron function (8). Both MAPK and PI3K pathways have been suggested as downstream targets of Tyro3 activation (7,8). Tyro3 has also been shown to be correlated to melanoma tumorigenesis, likely through its reglulatory role in the expression of oncogenic microphthalmia-associated transcription factor (MITF) (9).

$489
96 assays
1 Kit
PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of tyrosine-phosphorylated Mer protein. A Mer Rabbit mAb has been coated onto the microwells. After incubation with cell lysates, Mer protein (phospho and nonphospho) is captured by the coated antibody. Following extensive washing, a Phospho-Tyrosine Mouse Detection mAb is added to detect the captured phospho-Mer proteins. Anti-mouse IgG, HRP-linked antibody is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of optical density for this developed color is proportional to the quantity of Mer protein phosphorylated on tyrosine residues.Antibodies in kit are custom formulations specific to kit.
REACTIVITY
Human

Background: Mer tyrosine kinase belongs to a receptor tyrosine kinase family with Axl and Tyro3. This family is characterized by a common NCAM (neural adhesion molecule)-related extracellular domain and a common ligand, GAS6 (growth arrest-specific protein 6). Mer protein has an apparent molecular weight of 170-210 kDa due to different glycosylation patterns generated in different cell types. Mer can be activated by dimerization and autophosphorylation through ligand binding or homophilic cell-cell interaction mediated by its NCAM-like motif (1). The downstream signaling components of activated Mer include PI3 kinase, PLCγ, and MAP kinase (2). Family members are prone to transcriptional regulation and carry out diverse functions including the regulation of cell adhesion, migration, phagocytosis, and survival (3). Mer regulates macrophage activation, promotes apoptotic cell engulfment, and supports platelet aggregation and clot stability in vivo (4). Investigators have found that overexpression of Mer may play a cooperative role in leukemogenesis and may be an effective target for biologically based leukemia/lymphoma therapy (5).