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产品介绍 Janus kinase (JAK) is a family of intracellular, nonreceptor tyrosine kinases that play an important role in cytokine-mediated signaling. This family includes four protein kinases; Jak1, Jak2, Jak3 and Tyk2. Various studies have suggested that regulation of Jak activity should be a promising approach to combat numerous diseases such as immune deficiencies and cancers. The TYK2 (Tyrosine Kinase 2) Assay Kit is designed to measure TYK2 activity for screening and profiling applications using Kinase-Glo® MAX as a detection reagent. The TYK2 (Tyrosine Kinase 2) Assay Kit comes in a convenient 96-well format, with enough purified recombinant TYK2 enzyme, TYK2 substrate peptide (IRS-1tide), ATP and kinase assay buffer for 100 enzyme reactions.
询价产品介绍 Phosphodiesterases (PDEs) play an important role in the dynamic regulation of cAMP and cGMP signaling. PDE4B has 3',5'-cyclic-AMP phosphodiesterase activity and degrades cAMP. Inhibition of PDE4B activity by its inhibitors leads to an elevated intracellular level of cAMP. The PDE4B gene encodes at least 4 different isoforms, and has been linked to inflammation in monocytes by its regulation of the toll-receptor pathway. It is also highly expressed in the central nervous system, and has been targeted as a potential treatment for autism, depression, schizophrenia, and other conditions. The PDE4B cell-based activity assay kit is designed for screening inhibitors of PDE4B1 in cultured cells. The assay is based on transfecting cells with the CRE luciferase reporter. CRE reporter contains the firefly luciferase gene under the control of cAMP response element (CRE). Elevation of intracellular cAMP activates CRE binding protein (CREB) to bind CRE and induce the expression of luciferase. Forskolin is commonly used to raise the intracellular level of cAMP in cell physiology studies. When cells transiently transfected with CRE reporter are activated by forskolin, the intracellular level of cAMP is upregulated, which induces the expression of CRE luciferase reporter. However, when cells are co-transfected with PDE4B1 expression vector and CRE reporter, the level of forskolin-induced cAMP is reduced, resulting in lower expression level of luciferase. When cells are treated with PDE4B inhibitor to inhibit PDE4B1 activity, cAMP level is restored, resulting in higher luciferase activity. The kit includes CRE luciferase reporter (premixed with constitutively-expressing Renilla (sea pansy) luciferase vector that serves as an internal control for transfection efficiency), PDE4B1 expression vector, and forskolin.
询价产品介绍 Cell signaling through the PD-1 receptor upon binding the PD-L1 ligand attenuates immune responses and is exploited by both tumors and viruses. The PD-1[Biotinylated]: PD-L1 Inhibitor Screening Assay Kit is designed for screening and profiling inhibitors of this signaling. This kit comes in a convenient 384-well format with biotin-labeled PD-1, purified PD-L1, streptavidin-labeled HRP, and assay buffer for 400 binding reactions. The key to this kit is the high sensitivity of detection of biotin-labeled PD-1 by streptavidin-HRP. Only a few simple steps on a microtiter plate are required for the assay. First, PD-L1 is coated on a 384-well plate. Next, PD-1 is incubated with PD-L1 on the plate. Finally, the plate is treated with streptavidin-HRP followed by addition of an HRP substrate to produce chemiluminescence, which can then be measured using a chemiluminescence reader.
询价产品介绍 Janus kinase (JAK) is a family of intracellular, nonreceptor tyrosine kinases that play an important role in cytokine-mediated signaling. This family includes four protein kinases; Jak1, Jak2, Jak3 and Tyk2. Various studies have suggested that regulation of Jak activity should be a promising approach to combat numerous diseases such as immune deficiencies and cancers. The JAK3 (Janus Kinase 3) Assay Kit is designed to measure JAK3 activity for screening and profiling applications using Kinase-Glo® MAX as a detection reagent. The JAK3 (Janus Kinase 3) Assay Kit comes in a convenient 96-well format, with enough purified recombinant JAK3 enzyme, JAK3 substrate peptide (Poly(Glu;Tyr, 4:1)), ATP and kinase assay buffer for 100 enzyme reactions.
询价产品介绍 Janus kinase (JAK) is a family of intracellular, nonreceptor tyrosine kinases that play an important role in cytokine-mediated signaling. This family includes four protein kinases; Jak1, Jak2, Jak3 and Tyk2. Various studies have suggested that regulation of Jak activity should be a promising approach to combat numerous diseases such as immune deficiencies and cancers. The JAK2 (Janus Kinase 2) Assay Kit is designed to measure JAK2 activity for screening and profiling applications using Kinase-Glo® MAX as a detection reagent. The JAK2 (Janus Kinase 2) Assay Kit comes in a convenient 96-well format, with enough purified recombinant JAK2 enzyme, JAK2 substrate peptide (Poly(Glu;Tyr, 4:1)), ATP and kinase assay buffer for 100 enzyme reactions.
询价产品介绍 Janus kinase (JAK) is a family of intracellular, nonreceptor tyrosine kinases that play an important role in cytokine-mediated signaling. This family includes four protein kinases; Jak1, Jak2, Jak3 and Tyk2. Various studies have suggested that regulation of Jak activity should be a promising approach to combat numerous diseases such as immune deficiencies and cancers. The JAK1 (Janus Kinase 1) Assay Kit is designed to measure JAK1 activity for screening and profiling applications using Kinase-Glo® MAX as a detection reagent. The JAK1 (Janus Kinase 1) Assay Kit comes in a convenient 96-well format, with enough purified recombinant JAK1 enzyme, JAK1 substrate peptide (IRS-1tide), ATP and kinase assay buffer for 100 enzyme reactions.
询价背景介绍 The activation of naÍve T cells requires two signals, the specific T cell receptor recognition of MHC/Antigen on the surface of the antigen-presenting cell (APC), and the binding of B7-1 (CD80) ligand on the APC with the CD28 receptor on the T cell surface. Conversely, binding of CTLA4 to B7-1 on the T-cell surface results in an inhibitory signal and prevents T-cell activation. CTLA4:B7-1 interaction is an important drug target for the regulation of the host's response to cancer. 产品介绍 The Mouse CTLA4[biotin]:B7-1 Inhibitor Screening Assay Kit is designed for screening and profiling inhibitors of mouse CTLA4:B7-1 signaling. This kit comes in a convenient 96-well format, with biotin-labeled mouse CTLA4, purified mouse B7-1, streptavidin-labeled HRP, and assay buffer for 100 binding reactions. The key to this kit is the high sensitivity of detection of biotin-labeled mouse CTLA4 by streptavidin-HRP. Only a few simple steps on a microtiter plate are required for the assay. First, B7-1 is coated on a 96-well plate. Next, CTLA4[biotin] is incubated with B7-1 on the plate. Finally, the plate is treated with streptavidin-HRP followed by addition of an HRP substrate to produce chemiluminescence, which can be measured using a chemiluminescence reader.
询价背景介绍 IDO1/2 and TDO overexpression in tumor cells promotes tryptophan depletion in the microenvironment, resulting in suppression of the T-cell mediated immune response. IDO1/2 and TDO catalyze the breakdown of tryptophan into kynurenine, and subsequently KYNU cleaves kynurenine into anthranilic acid, a precursor of tryptophan. High levels of KYNU have been found in lymphoma, breast, liver, pancreas, and urothelial cancers, and is thought to promote tumor aggressiveness and metastasis. KYNU levels are also elevated in many chronic inflammatory skin diseases such as psoriasis and atopic dermatitis inflammatory, making KYNU attractive as a potential therapeutic and prognostic target. 产品介绍 The Kynureninase (KYNU) Inhibitor Screening Assay Kit is designed to measure human KYNU enzyme inhibition. The kit comes in a convenient format, with enough reaction solution and enzyme to perform a total of 100 reactions. The KYNU Inhibitor Screening Assay Kit is simple to use. Inhibitor and enzyme are mixed and the reaction is initiated through addition of the substrate 3-hydroxy-DL-kynurenine (3-HK). After a room temperature incubation, activity is determined by measuring the fluorescence of the reaction product (ex. 315 nm, em. 415 nm).
询价产品介绍 The mouse CTLA4:B7-1 TR-FRET Assay is designed to measure the inhibition of mouse CTLA4 binding to mouse B7-1 in a homogeneous 384 reaction format. This FRET-based assay requires no time-consuming washing steps, making it especially suitable for high throughput screening applications. The assay procedure is straightforward and simple; a sample containing biotinylated mCTLA4, mB7-1 protein, anti-His Tb donor, dye-labeled acceptor, and an inhibitor is incubated for two hours. Then, the fluorescence intensity is measured using a fluorescence reader.
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