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Cyclic AMP XP® Chemiluminescent Assay Kit #8019

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  • ELISA
ELISA Image 1: Cyclic AMP XP® Chemiluminescent Assay Kit
Figure 1: cAMP Standard was diluted in 1X Cell Lysis Buffer #9803 and samples were assayed following the Cyclic AMP XP®Chemiluminescent Assay Kit protocol. This standard curve is for demonstration purposes only; users should generate a standard curve for each sample set in order to accurately determine cAMP concentration.

To Purchase # 8019

Cat. # Size Qty. Price
8019S 1 Kit
96 assays
$441
  • Product Includes
  • Related Products
Product IncludesSolution ColorQuantity (with Count)
cAMP Rabbit mAb Coated Microwells #507151 x 96 tests
cAMP-HRP Conjugate #55401Red1 x 5.5 ml
cAMP Standard (2.4 uM) #387201 x 0.5 ml
Luminol/Enhancer Solution #848501 x 3 ml
Stable Peroxide Buffer #425521 x 3 ml
Sealing Tape #545031 x 2 ea
ELISA Wash Buffer (20X) #98011 x 10 ml
Cell Lysis Buffer (10X) #98031 x 15 ml

Product Information

Protocol

Product Description

The Cyclic AMP XP® Chemiluminescent Assay Kit is a competition enzyme-linked immunoassay used to determine cAMP levels in cells or tissues of interest. In this assay, cAMP found in the test sample competes with a fixed amount of HRP-linked cAMP for binding to an anti-cAMP XP® Rabbit mAb immobilized onto a 96-well plate. Following washing to remove excess sample cAMP and HRP-linked cAMP, chemiluminescent reagent is added for signal development. Because of the competitive nature of this assay, the magnitude of light emission, measured in relative light units (RLU), is inversely proportional to the quantity of sample cAMP. Measurement of light emmision using the cAMP Standard allows calculating the absolute amount of cAMP in a sample of interest.

Specificity / Sensitivity

The immunoreactivity of this kit was tested against the following: ADP, AMP, ATP, cAMP, cGMP, cIMP, cTMP, CTP, GDP, GMP, and GTP. Relatively minor cross-reactivity was observed with cGMP and cIMP, with 10 fold higher sensitivity for cAMP compared to either cGMP or cIMP. No cross-reactivity was observed with any of the other factors tested. Kit sensitivity, as shown in Figure 1, demonstrates a dynamic range of 0.2 to 12 nM of cAMP. Changes in cellular cAMP levels following specific treatment with forskolin is shown in Figure 2 (CHO cells).

Species Reactivity:

All Species Expected

Background

Cyclic adenosine 3’,5’-monophosphate (cAMP) is an important second messenger involved in many signal transduction pathways in different cell types of numerous species (1-3). In mammalian cells, this important molecule is produced by adenylyl cyclases (AC). Extracellular stimuli such as neurotransmitters, hormones, chemokines, lipid mediators, and drugs can modulate AC activity to increase or decrease cAMP production by binding to a large number of transmembrane G protein-coupled receptors (4). The degradation of cAMP to AMP is catalyzed by phosphodiesterases that are regulated by intracellular nucleotide concentrations, phosphorylation, or binding of Ca2+/calmodulin and other regulatory proteins (5). A set of diverse molecules, including cAMP-dependent protein kinase (PKA), cyclic nucleotide-gated ion channels, and exchange proteins that are activated by cAMP (EPAC), mediate downstream cAMP signaling (6,7). cAMP modulates various biological processes including metabolism, differentiation, cardiac cell functions, neuronal signaling, cell adhesion, and immune functions (5-7).
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