Mouse Erythropoietin/EPO DuoSet ELISA

Name: Mouse Erythropoietin/EPO DuoSet ELISA
Brand: R&D Systems
SKU: DY959
Rating: 5 (2 reviews)

Catalog #: DY959
1 Citation 2 Reviews Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
DY959

Ancillary Products Available

DY008B: DuoSet ELISA Ancillary Reagent Kit 2

DY999B: Substrate Reagent Pack

DY999: Substrate Reagent Pack

Mouse Erythropoietin ELISA Standard Curve

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All Erythropoietin/EPO ELISAs

Product Details

Procedure

Citations (1)

FAQs

Supplemental Products

Reviews (2)

Summary Product Features Kit Content Other Reagents Required Data Examples Product Datasheets Preparation and Storage Background

Mouse Erythropoietin/EPO DuoSet ELISA Summary

Assay Type

Solid Phase Sandwich ELISA

Format

96-well strip plate

Sample Volume Required

100 µL

Assay Range

62.5 - 4,000 pg/mL

Sufficient Materials

For fifteen 96-well plates*

Specificity

Please see the product datasheet

* Provided that the recommended microplates, buffers, diluents, substrates and solutions are used, and the assay is run as summarized in the Assay Procedure provided.

This DuoSet ELISA Development kit contains the basic components required for the development of sandwich ELISAs to measure natural and recombinant mouse Erythropoietin. The suggested diluent is suitable for the analysis of most cell culture supernate samples. Diluents for complex matrices, such as serum and plasma, should be evaluated prior to use in this DuoSet.

Product Features

Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time
Development protocols are provided to guide further assay optimization
Assay can be customized to your specific needs
Economical alternative to complete kits

Kit Content

Capture Antibody
Detection Antibody
Recombinant Standard
Streptavidin conjugated to horseradish-peroxidase (Streptavidin-HRP)

Other Reagents Required

DuoSet Ancillary Reagent Kit 2 (5 plates): (Catalog # DY008) containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and Reagent Diluent Concentrate 2.

The components listed above may be purchased separately:

PBS: (Catalog # DY006), or 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na₂HPO₄, 1.5 mM KH₂PO₄, pH 7.2 - 7.4, 0.2 µm filtered

Wash Buffer: (Catalog # WA126), or 0.05% Tween^® 20 in PBS, pH 7.2-7.4

Reagent Diluent: (Catalog # DY995), or 1% BSA in PBS, pH 7.2-7.4, 0.2 µm filtered

Substrate Solution: 1:1 mixture of Color Reagent A (H₂O₂) and Color Reagent B (Tetramethylbenzidine) (Catalog # DY999)

Stop Solution: 2 N H₂SO₄ (Catalog # DY994)

Microplates: R&D Systems (Catalog # DY990)

Plate Sealers: ELISA Plate Sealers (Catalog # DY992)

Scientific Data

N/A

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Mouse Erythropoietin ELISA Standard Curve

Product Datasheets

Product Datasheet

COA

SDS

Preparation and Storage

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: Erythropoietin/EPO

Erythropoietin (Epo) is a 34-39 kDa secreted glycoprotein that is a member of the type I cytokine superfamily. The mouse Epo gene encodes a 192 amino acid (aa) residue precursor that contains a 26 aa signal peptide and a 166 aa mature protein containing three potential N-linked glycosylation sites (1-4). Mouse Epo lacks the O-linked glycosylation site found in human Epo. Although carbohydrate chains are not required for in vitro receptor binding, they are required for in vivo Epo bioactivity. Depending on the cell source, different Epo isoforms are produced that differ in their glycan compositions and sialic acid contents (5-8). Mature mouse and rat Epo share 94% aa sequence identity. They also share from 80%-82% aa identity with mature human, porcine, rhesus monkey and feline Epo (2, 3). Epo is primarily produced by cells in the kidney (interstitial peritubular renal fibroblasts) and liver (hepatocytes and Ito cells), where its production is up-regulated by hypoxia. Other tissues and cells, including neural tissues (astrocytes and neurons), testis (Sertoli cells), uterus, placenta, and erythroid progenitors, have also been shown to produce Epo (9-14).

Epo is best known for its role in red blood cell formation. While Epo is not a lineage commitment factor, it inhibits apoptosis and induces burst forming unit-erythroid (BFU-E) differentiation into colony forming unit-erythroid (CFU-E), and the subsequent proliferation and maturation of CFU-E into early normoblasts (10, 15, 16). Apart from its role in erythropoiesis, Epo also acts on various non-hematopoietic cells to function as a viability and proliferation factor. Epo can stimulate myoblast proliferation while suppressing its differentiation, resulting in the expansion of the progenitor cell population (17). Epo is a tissueprotective factor that protects against ischemic and toxic injuries to neuronal, cardiovascular and renal tissues (18, 19). Epo has also been shown to promote angiogenesis in various physiologic and pathologic conditions (20, 21).

Epo binds and signals via the high-affinity preformed homodimeric Epo receptor (Epo R) that is composed of two Epo R subunits. Each Epo R subunit is a type I transmembrane glycoprotein that belongs to the type I cytokine receptor superfamily (18, 22-24). Its extracellular domain contains the characteristic two fibronectin type III domains and a WSxWS motif near the plasma membrane (24, 25). Binding of Epo to the Epo R homodimer results in conformational change and phosphorylation and activation of the non-receptor protein kinase JAK2, which activates the downstream signaling cascade (26). An alternative Epo heteromeric receptor complex that transduces cell-protective signals and containing the beta common receptor ( beta CR) subunit in addition to the Epo R subunit has been described. beta CR also belongs to the type I cytokine receptor superfamily and is a subunit that is shared by the heteromeric IL-3, IL-5 and GM-CSF receptor complexes. Epo binds with lower affinity to the heteromeric receptor consisting of a Epo R subunit and a beta CR homodimer (18).

Entrez Gene IDs:

2056 (Human); 13856 (Mouse); 24335 (Rat)

Alternate Names:

ECYT5; EP; EPO; epoetin; Erythropoietin; MGC138142; MVCD2

Assay Procedure

GENERAL ELISA PROTOCOL

Plate Preparation

Dilute the Capture Antibody to the working concentration in PBS without carrier protein. Immediately coat a 96-well microplate with 100 μL per well of the diluted Capture Antibody. Seal the plate and incubate overnight at room temperature.
Aspirate each well and wash with Wash Buffer, repeating the process two times for a total of three washes. Wash by filling each well with Wash Buffer (400 μL) using a squirt bottle, manifold dispenser, or autowasher. Complete removal of liquid at each step is essential for good performance. After the last wash, remove any remaining Wash Buffer by aspirating or by inverting the plate and blotting it against clean paper towels.
Block plates by adding 300 μL Reagent Diluent to each well. Incubate at room temperature for a minimum of 1 hour.
Repeat the aspiration/wash as in step 2. The plates are now ready for sample addition.

Assay Procedure

Add 100 μL of sample or standards in Reagent Diluent, or an appropriate diluent, per well. Cover with an adhesive strip and incubate 2 hours at room temperature.
Repeat the aspiration/wash as in step 2 of Plate Preparation.
Add 100 μL of the Detection Antibody, diluted in Reagent Diluent, to each well. Cover with a new adhesive strip and incubate 2 hours at room temperature.
Repeat the aspiration/wash as in step 2 of Plate Preparation.
Add 100 μL of the working dilution of Streptavidin-HRP to each well. Cover the plate and incubate for 20 minutes at room temperature. Avoid placing the plate in direct light.
Repeat the aspiration/wash as in step 2.
Add 100 μL of Substrate Solution to each well. Incubate for 20 minutes at room temperature. Avoid placing the plate in direct light.
Add 50 μL of Stop Solution to each well. Gently tap the plate to ensure thorough mixing.
Determine the optical density of each well immediately, using a microplate reader set to 450 nm. If wavelength correction is available, set to 540 nm or 570 nm. If wavelength correction is not available, subtract readings at 540 nm or 570 nm from the readings at 450 nm. This subtraction will correct for optical imperfections in the plate. Readings made directly at 450 nm without correction may be higher and less accurate.

Citation for Mouse Erythropoietin/EPO DuoSet ELISA

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

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