ELISA/assay

Human sICAM-1 ELISA Kit

MBS8506085

1 x48 Wells

295 USD

ELISA Kit

Human sICAM-1 ELISA Kit

sICAM-1

sICAM-1, partial; Intercellular adhesion molecule 1; intercellular adhesion molecule 1; ICAM-1; cell surface glycoprotein P3.58; major group rhinovirus receptor; intercellular adhesion molecule 1 (CD54), human rhinovirus receptor; intercellular adhesion molecule 1; Major group rhinovirus receptor; CD_antigen: CD54

ICAM1; ICAM1; BB2; CD54; P3.58; ICAM-1

ICAM1_HUMAN

38

This assay recognizes both natural and recombinant human sICAM-1. The factors listed below were prepared at 50ng/ml in Standard /sample Diluent and assayed for cross-reactivity and no significant cross-reactivity or interference was observed.

Samples: Cell culture supernates, serum, and plasma. Assay Type: Sandwich. Sensitivity: 31pg/mL.

Immunology

Principle of the assay: This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal antibody specific for sICAM-1 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any sICAM-1 present is bound by the immobilized antibody. Following incubation unbound samples are removed during a wash step, and then a detection antibody specific for sICAM-1 is added to the wells and binds to the combination of capture antibody- sICAM-1 in sample. Following a wash to remove any unbound combination, and enzyme conjugate is added to the wells. Following incubation and wash steps a substrate is added. A coloured product is formed in proportion to the amount of sICAM-1 present in the sample. The reaction is terminated by addition of acid and absorbance is measured at 450nm. A standard curve is prepared from seven sICAM-1 standard dilutions and sICAM-1 sample concentration determined. Background: Intercellular Adhesion Molecule 1 (ICAM-1), also known as CD54, is a nearly ubiquitous transmembrane glycoprotein that plays a key role in leukocyte migration and activation (1, 2). Human ICAM-1 contains five Ig-like domains in its extracellular domain (ECD) and associates into non-covalently linked dimers (3, 4). Soluble forms of monomeric and dimeric ICAM-1 (sICAM-1) can be generated via proteolytic cleavage by cathepsin G, elastase, MMP-9, MMP-14/MT1-MMP, and TACE/ADAM17 (5 - 8). In the mouse, alternate splicing generates isoforms that lack particular Ig-like domains and are differentially sensitive to proteolysis (5). Within the ECD, human ICAM-1 shares 53% amino acid sequence identity with mouse and rat ICAM-1. The principal binding partners of ICAM-1 are the leukocyte integrins LFA-1 (CD11a/CD18) and Mac-1 (CD11b/CD18) (9 - 11). The multivalency of dimeric ICAM-1 increases its strength of interaction with LFA-1 (9, 10). ICAM-1 also binds several non-integrin ligands including CD43/sialophorin, fibrinogen, hyaluronan, rhinoviruses, and Plasmodium falciparum-infected erythrocytes (12 - 16). At sites of inflammation, ICAM-1 is upregulated on endothelial and epithelial cells where it mediates the adhesion and paracellular migration of leukocytes expressing activated LFA-1 and Mac-1 (17 - 20). ICAM-1 ligation prolongs antigen presentation by dendritic cells and promotes T cell proliferation and cytokine release (21 - 23). ICAM-1 activation also participates in angiogenesis, wound healing, and bone metabolism (24 - 26). Soluble ICAM-1 has been reported in serum, cerebrospinal fluid, urine, and bronchoalveolar lavage fluid (2, 27 - 31). Elevated levels of sICAM-1 in these fluids are associated with cardiovascular disease, type 2 diabetes, organ transplant dysfunction, oxidant stress, abdominal fat mass, hypertension, liver disease, and certain malignancies (32 - 40). sICAM-1 promotes angiogenesis and serves as an indicator of vascular endothelial cell activation or damage (41, 42). It also functions as an inhibitor of transmembrane ICAM-1 mediated activities such as monocyte adhesion to activated endothelial cells and sensitivity of tumor cells to NK cell-mediated lysis (7, 8).

1836075

AAB46863.1

57,825 Da

Adaptive Immune System Pathway (366160); African Trypanosomiasis Pathway (194384); African Trypanosomiasis Pathway (194323); Cell Adhesion Molecules (CAMs) Pathway (83069); Cell Adhesion Molecules (CAMs) Pathway (480); Cytokine Signaling In Immune System Pathway (366171); Epstein-Barr Virus Infection Pathway (585562); Epstein-Barr Virus Infection Pathway (587115); Extracellular Matrix Organization Pathway (576262); Glucocorticoid Receptor Regulatory Network Pathway (138014)

This gene encodes a cell surface glycoprotein which is typically expressed on endothelial cells and cells of the immune system. It binds to integrins of type CD11a / CD18, or CD11b / CD18 and is also exploited by Rhinovirus as a receptor. [provided by RefSeq, Jul 2008]

ICAM1: a type I membrane protein of the immunoglobulin superfamily. Is a ligand for the leukocyte adhesion LFA-1 protein (Integrin alpha-L/beta-2) and a Rhinovirus receptor. Typically expressed on endothelial cells and cells of the immune system. ICAM1 binds to integrins of type CD11a / CD18, or CD11b / CD18. Its expression is activated by p53 in an NF-kappaB-independent manner. Induced by TNFalpha in a process that involves IKKbeta. Protein type: Cell adhesion; Membrane protein, integral; Immunoglobulin superfamily. Chromosomal Location of Human Ortholog: 19p13.3-p13.2. Cellular Component: extracellular space; cell surface; focal adhesion; membrane; integral to plasma membrane; plasma membrane; immunological synapse; external side of plasma membrane. Molecular Function: integrin binding; viral receptor activity; protein binding; transmembrane receptor activity; receptor activity. Biological Process: entry of virus into host cell; extracellular matrix organization and biogenesis; positive regulation of nitric oxide biosynthetic process; T cell antigen processing and presentation; response to organic cyclic substance; activation of NF-kappaB transcription factor; positive regulation of cellular extravasation; regulation of cell shape; cellular response to nutrient levels; leukocyte adhesion; sensory perception of sound; ovarian follicle development; T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell; membrane to membrane docking; response to sulfur dioxide; cell adhesion; regulation of leukocyte mediated cytotoxicity; acute inflammatory response to antigenic stimulus; response to drug; regulation of cell adhesion; virion attachment, binding of host cell surface receptor; negative regulation of calcium ion transport; regulation of immune response; cytokine and chemokine mediated signaling pathway; response to amphetamine; cell aging; response to amino acid stimulus; heterophilic cell adhesion; positive regulation of peptidyl-tyrosine phosphorylation; response to ethanol; positive regulation of actin filament polymerization; response to copper ion; positive regulation of vasoconstriction; adhesion to host; cell adhesion mediated by integrin; response to ionizing radiation; leukocyte migration. Disease: Malaria, Susceptibility To

1 x48 Wells

295 USD

1x96 Wells

355