Human LAIR1 DuoSet ELISA

Catalog #: DY2664-05 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
DY2664-05

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

Human LAIR1 DuoSet ELISA Summary

Assay Type

Solid Phase Sandwich ELISA

Format

96-well strip plate

Assay Range

39.1 - 2,500 pg/mL

Sufficient Materials

For five 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 human LAIR1. The suggested diluent is suitable for the analysis of most cell culture supernate samples. Diluents for complex matrices, such as cell lysates, 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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Human LAIR1 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: LAIR1

LAIR proteins are related proteins that each contain one Ig-like domain and thus belong to the Ig superfamily. LAIR1 is a type I transmembrane protein with two cytoplasmic ITIM domains that functions as an inhibitory receptor on NK cells, T cells, B cells, monocytes, dendritic cells and most thymocytes. LAIR2 is a secreted protein with 83% amino acid identity to LAIR1 extracellular domain, but lacks the transmembrane and cytoplasmic domains. The function of LAIR2 is not known. Both LAIR1 and LAIR2 have alternately spliced isoforms.

Long Name:

Leukocyte-associated Ig-like Receptor 1

Entrez Gene IDs:

3903 (Human); 52855 (Mouse); 574531 (Rat); 102136964 (Cynomolgus Monkey)

Alternate Names:

CD305 antigen; CD305; CD305leukocyte-associated Ig-like receptor 1; HLAIR1; LAIR1; LAIR-1; leukocyte-associated immunoglobulin-like receptor 1

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.