Human CD22 ELISA Kit

Sensitivity

4.6 pg/mL

Range

125-8000 pg/mL

Reactivity

Human

Cat no : KE00131

Synonyms

B cell receptor CD22, BL CAM, CD22, CD22 molecule, FLJ22814, SIGLEC 2, SIGLEC2, T cell surface antigen Leu 14



Product Information

KE00131 is a solid phase sandwich Enzyme Linked-Immuno-Sorbent Assay (Sandwich ELISA). The CD22 ELISA kit is to be used to detect and quantify protein levels of endogenous CD22. The assay recognizes human CD22. An antibody specific for CD22 has been pre-coated onto the microwells. The CD22 protein in samples is captured by the coated antibody after incubation. Following extensive washing, another antibody of biotinylated specific for human CD22 is added to detect the captured human CD22 protein. For signal development, Streptavidin-HRP is added, followed by Tetramethyl-benzidine (TMB) reagent. Solution containing sulfuric acid is used to stop color development and the color intensity which is proportional to the quantity of bound protein is measurable at 450 nm with the correction wavelength set at 630 nm.

Product name Human CD22 ELISA Kit
Tests 1 X 96 well plate
Sample type Serum, Plasma, Cell culture supernatants, Cell lysates
Assay type Sandwich
Sensitivity 4.6 pg/mL
Range 125-8000 pg/mL
Reactivity Human
Tested applications Sandwich ELISA

Recovery

Sample TypeAverageRange
Human serum97%72%-125%
Cell culture supernatants87%75%-103%
Cell lysates90%71%-112%

IntraAssay

Samplenmean ( pg/mL)SDCV%
1203,996.4339.28.5
220991.278.37.9
320224.012.35.5

InterAssay

Samplenmean ( pg/mL)SDCV%
1243,493.8362.810.4
224993.095.49.6
324244.425.210.3

Background Information

CD22, also known as Siglec-2 (sialic acid binding Ig-like lectin 2) or BL-CAM (B-lymphocyte cell adhesion molecule), is a 130-140 kDa, B-cell restricted, type I transmembrane glycoprotein belonging to the immunoglobulin gene superfamily. The expression of CD22 is developmentally regulated. It is expressed at low levels in the cytoplasm of pro-B and pre-B cells and present on the cell surface only at mature stages of B-cell differentiation. Cell surface expression is lost during terminal differentiation into plasma cell and after B-cell activation. CD22 is an inhibitory receptor for B-cell receptor (BCR) signalling, preferentially binds to alpha-2,6-linked sialic acid and mediates B-cell B-cell interactions. It plays a crucial role in activation and differentiation of the B-cell. Soluble form of CD22 (sCD22) has been found in human serum and may be useful as a tumor marker for hairy cell leukemia.

Properties

Storage Instructions All the reagents are stored at 2-8℃ for 6 months or -20℃ for 12 months. Refer to the protocol for further storage instructions.
Synonyms B cell receptor CD22, BL CAM, CD22, CD22 molecule, FLJ22814, SIGLEC 2, SIGLEC2, T cell surface antigen Leu 14