The assay involves two monoclonal antibodies, one labeled with Cryptate and the other with XL665, that recognize distinct determinants. The assay is performed in a single step and requires only a short incubation period. Detection limit of the assay is 0.20 ng/mL and the linear range covers 0.3 to 10 ng/mL. The assay has been validated on various biological material including isolated perfused pancreas, plasma, and pancreatic…
This HTRF kit detects changes of cAMP accumulation in response to Gs coupled GPCR activation or inhibition.
Universal Assay for Serine/Threonine KinasesCisbio's line of HTRF® KinEASE™ STK kits are based on our patented HTRF® technology and can be used as a universal tool for assessing Serine/Threonine kinase activity. These assays use a proprietary antibody and a choice of three biotinylated substrates developed by Upstate to rapidly produce high quality kinase results. Our HTRF KinEASE™ STK kits have been validated on more than 107…
Cisbio offers a line of three ready-to-use assays for measuring cAMP using HTRF® technology. Each kit is optimized for detecting a specific range of cAMP concentrations to allow fine tuning of assay sensitivity. These kits enable high quality, cell-based assay screening in 96-, 384- or 1536-well formats.
Three kits to cover a wide range of cAMP concentrations.After the introduction of IP-One, the first HTS immunoassay that can easily detect inositol(1)phosphate (IP1), a stable second messenger which tightly correlates with Gq-coupled receptor activity, the optimization of cAMP assays with the new HTRF® acceptor d2 offers a complete GPCR platform.The upgraded cAMP dynamic 2 and cAMP femto 2 assays, along with the new cAMP HiRa…
The Human IgG kit is designed for the fast quantification of human IgG.
An easy way to assess tag accessibilityThe production of fusion proteins often raises the issues not only of their structural integrity after isolation, but also of the accessibility of the associated tag. In the case of GST or 6HIS tagged proteins, this verification can be achieved with HTRF® GST and 6HIS check kits. These two assays are competitive immunoassays in which the anti-GST or anti-6HIS Cryptate conjugates bind dire…
A rapid and sensitive homogeneous assay for cortisol assessmentThe HTRF® cortisol assay can be used for the quantification of cortisol in rodent serum, or directly on cells. This assay has also been validated for 11-beta HSD1 screening on whole cells or microsomes.The assay requires only 2 reagent additions, followed by an incubation period of 2 hours at room temperature. It has a detection limit of 70 pg/mL (e.g. 2 fmol/well…
A straightforward tool for biomolecular labeling with Europium cryptateThe Cryptate labeling kit includes all the necessary materials to allow rapid Cryptate labeling of various biomolecules and purification. The labeling reagent Eu3+-TBP-NHS Cryptate is suitable for labeling peptides, proteins, and oligonucleotides, as well as small molecules containing amino groups (N-terminus or lysine residues). The labeling procedure requ…
A range of HTRF® conjugates for assay developmentHTRF® toolbox assembles a panel of detecting reagents such as Streptavidin-XLlent!, anti-tag antibodies like Eu-Cryptate anti-GST, 6HIS, DNP and anti species conjugated antibodies offering many possibilities for the study of molecular mechanisms. All reagents are available as Cryptate-Europium or XL665 (the two HTRF tracers) conjugates, to allow easy assay development. These re…
A simple and straightforward procedure for measuring functional kinase activity.The Eu(K) labeled antibody and XL665 conjugate are added simultaneously after the enzymatic step. Results are available after a 2-hour incubation at room temperature. The two reagents are stable in solution, even in an excess of EDTA (0.5M), while the assay remains stable for >24 hours. An extended list of Eu3+-Cryptate labeled phospho-specific…
An homogeneous fluorescence assay for PGE2Prostaglandin E2 (PGE2) is a primary product of arachidonic metabolism in many cells. Under inflammatory stimuli, PGE2 is de novo synthesized by three enzymatic steps via the cyclooxygenase (COX) pathways. PGE2 production is commonly used in the detection of COX-1 and COX-2 activity. In the PGE2 HTRF® assay, free PGE2 from the sample competes with XL665 labeled PGE2 for binding to a Cr…
Streamlined single plate protocols including all stimulation and cytokine quantification.The HTRFâ cytokine kit line includes TNFa, IFNg, IL1b, IL6 and IL8 assays. These assays feature no separation steps, a high sensitivity and dynamics, and no use of isotopes. Procedures are performed on a single plate with simultaneous cell stimulation and cytokine detection. They can all be run under a similar experimental procedure stream…
A homogeneous single plate assay for the sensitive quantification of histamine.Histamine is a small biogenic amine that plays an important role in several physiological and pathophysiological processes. The histamine HTRF® assay is based on the competition between sample histamine and XL665-labeled histamine for binding to a Cryptate-labeled antibody. The amount of histamine detected is inversely proportional to the specific f…
A streamlined assay for human monoclonal antibody screening.The human Fc check kit is a competitive immunoassay involving a Cryptate conjugated polyclonal antibody specific to human Fc IgGs and XL665 coupled human IgGs. This homogeneous assay enables a precise assessment of all human IgG isotypes within 3 hours at room temperature and is particularly adapted to human monoclonal antibody (MAb) screening. Like all other HTRF® as…
A new secondary messenger for Gq coupled receptor investigation.Cisbio’s IP-One assay, based on its proprietary HTRF® technology, is the first HTS immunoassay that can easily detect inositol(1)phosphate (IP1), a stable second messenger which tightly correlates with Gq-coupled receptor activity. This assay displays all the characteristic advantages of an HTRF® system: totally homogeneous, detection via fluorescence, signal stab…
A unique set of reagents for the investigation of ubiquitin.The HTRF® Ubiquitin toolbox assembles all the reagents for flexible assay development and HTS of each step of the ubiquitin system. Ubiquitin is directly labeled with the Eu3+-Cryptate. This conjugate is directly incorporated into the ubiquitin chain during the enzymatic step. Upon the addition of the XL665 conjugate, the HTRF® signal is proportional to the level of u…
A team of experts for outsourcing your assay developmentsOur Service Team at Cisbio international is highly trained in protein chemistry and fluorescent technology, and offers you its expertise in assay development to build HTRF® assays adapted to your specific targets or to convert existing assays to HTRF® technology.Assays may be developed using HTRF® toolbox reagents, custom labeled molecules or a combination of both. Most…
A fast and reliable process for biomolecule labelingIn many circumstances, assay development and HTS involve specific labeling of the various assay components. Cisbio international’s labeling service is an excellent alternative for the labeling of proteins, peptides, oligonucleotides, or other biomolecules either with Cryptate, XL665, biotin or DNP when you do not have the time or the facilities to label them yourself.Two type…
EPIgeneous™ Binding Domain Assay Kits for studying epigenetic readers. This biochemical assay platform enables a no-wash, sensitive, reliable detection of protein/protein interaction between epigenetic binding domains and histone sequences modified by epigenetic enzymes. Three assay kits (A, B and C) have already been validated and fully optimized on a selection of 28 key binding domains. For non-validated reader domains, a f…
Cisbio's HTRF® KinEASE™ platform has expanded to include a universal assay for tyrosine kinases. The HTRF KinEASE TK assay is based on our patented HTRF technology and uses a unique tyrosine peptide substrate in combination with a Europium-labeled monoclonal antibody. The HTRF KinEASE™ TK assay has been validated on 59 tyrosine kinases to-date including both receptor and cytoplasmic TKs. A proprietary substrate stabilizing buf…
IP-One ELISA assay kit from Cisbio Bioassays - Simple and highly accurate measurement of IP1 IP1, a downstream metabolite of IP3, accumulates in cells following activation of Phospholipase C (PLC) coupled receptors. Among them, the Gq coupled GPCRs represent the most important family of receptors which can activate the β subtype of the PLC family. Other receptor types, like protein tyrosine kinase receptors, antigen or immuno…
Do you - have trouble finding an assay that fits your needs perfectly or do you want to convert your ELISA into an homogeneous method? Through Assays on demand, Cisbio gives you a list of its latest developments for the Drug Discovery field. To discover the extent of our expertise and know-how, and find a solution to your specific needs, see our service offer.These assays on demand are sold frozen and available in 1,000 and 20…
ADP detection with HTRF® quality.The HTRF® Transcreener™ ADP assay is a homogeneous non-radioactive assay which measures the generation of ADP. This universal solution can be used to assess kinase and ATPase activity for High Throughput Screening and profiling applications. Enzyme-free detection allows for a low false positive rate. ADP is directly detected by a monoclonal antibody labeled with Eu3+ cryptate and correlates tig…
Cisbio's cAMP HiRange kit is designed to address either the use of cell-based and cellular membranes-assays in GPCR activation and Adenylate Cyclase activity screening. The cAMP HiRange assay is highly robust and produces quality results while eliminating the need for a continuous supply of living cells.
