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…
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…
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…
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 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 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…
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…
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.
IP1, a downstream metabolite of IP3, accumulates in cells following Gq recepetor activation and is stable in the presence of LiCl making it an ideal GPCR (Gq) functional assay. Cisbio developed and patented a highly accurate HTRF assay for measuring IP1 in 96-, 384- and 1536-well formats providing for a HTS compatible assay.
Cyclic GMP (Guanosine 3',5'-cyclic monophosphate) is a major second messenger that mediates cell activities by activating protein effectors such as protein kinase G (PKG), cGMP-regulated phosphodiesterases (PDEs), and cGMP-gated channels. Cellular cGMP is synthesized by soluble Guanylyl Cyclases and particulate Guanylyl cyclase, triggered by nitric oxide and atrial natriuretic peptide (ANP) binding respectively. Key processes…
An acetyl-biotinylated substrate recognized by a Eu3+ anti-acetyl MAb and SA-XL665, which is used in activator screening or to test an High Throughput SIRT1 inhibitor. The level of enzymatic activity is inversely proportional to the amount of signal produced in the system. For more information please visit Cisbio Bioassays website.
In order to provide you with the most advanced tools for GPCR cell-based assays HTRF Technology now incorporates Lumi4®-Tb chemistry. Lumi4®-Tb is the first and only TR-FRET terbium cryptate, and is fully compatible with all existing HTRF readers. Therefore IP-One Tb offers new levels of sensitivity and performance in cell-based assays.
Cisbio Bioassays'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. Features: Simple and rapid assay protocol Small quantity of membrane required per assay Signal to background ratio…
Cisbio Bioassays has developed Cellul'erk, a highly accurate HTRF assay for measuring phosphorylated ERK1/2 in 96-, 384- and 1536-well formats providing for an HTS compatible assay. Features: • Simple assay protocols designed for research studies (96-well plates) for HTS (384-small vol. plates) • Cell-based functional assay • Antibody-based detection • Direct detection Applications: • Gi, Gs, or Gq coupled receptor activatio…
G-Protein Coupled Receptors (GPCRs) are common drug targets. Previously, most studies were based on the monomeric model, but this perception of GPCRs is now evolving towards homodimeric , heterodimeric and oligomeric models. To facilitate research into GPCR dimers, CisBio Bioassays has applied the Tag-lite® technology to GPCR interaction assays. Based on HTRF® technology, plasmids have been designed to express either the SNA…
Cisbio Bioassays offer a comprehensive cellular platform to develop HTRF® ligand binding assays.Features: • Single technology and cellular platform for all GPCR assays • Unique non-radioactive ligand binding assays • Miniaturization down to < 10µl • Peptidic and non-peptidic fluorescent ligands • High Specific Binding • Low Non-Specific Binding with HTRF technology Tag-lite fluorescent ligands available for (Feb10): Vasopre…
Tag-lite® cell-lines and reagents, a multimodal environment streamlined for GPCR studies. Cellular trans-membrane receptors are high potential therapeutic targets in pharmacological research, among them G-Protein Coupled Receptors (GPCRs). To reach a better physiological understanding, their study is deepening and is now focusing on structural assessments (ligand binding, dimerisation) and also on multiple signal pathway assa…
