Human MICA Antibody

(6 citations)   
  • Species Reactivity
    Human
  • Specificity
    Detects human MICA in direct ELISAs and Western blots. In Western blots, approximately 40% cross-reactivity with recombinant human MICB is observed.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant human MICA
    Ala23-Gln308
    Accession # NP_001170990
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.1 µg/mL
    Recombinant Human MICA Fc Chimera (Catalog # 1300-MA)
  • Immunohistochemistry
    5-15 µg/mL
    See below
  • Blockade of Receptor-ligand Interaction
    In a functional ELISA, 0.4-1.2 µg/mL of this antibody will block 50% of the binding of 50 ng/mL of biotinylated Recombinant Human MICA Fc Chimera to immobilized Recombinant Human NKG2D Fc Chimera (Catalog # 1299‑NK) coated at 2 µg/mL (100 µL/well). At 5 μg/mL, this antibody will block >90% of the binding.
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Immunohistochemistry
MICA in Human Breast Cancer Tissue. MICA was detected in immersion fixed paraffin-embedded sections of human breast cancer tissue using Goat Anti-Human MICA Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1300) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of immersion fixed paraffin-embedded Tissue Sections.
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: MICA

MICA (MHC class I chain-related gene A) is a transmembrane glycoprotein that functions as a ligand for human NKG2D. A closely related protein, MICB, shares 85% amino acid identity with MICA. These proteins are distantly related to the MHC class I proteins. They possess three extracellular Ig-like domains, but they have no capacity to bind peptide or interact with beta 2-microglobulin. The genes encoding these proteins are found within the Major Histocompatibility Complex on human chromosome 6. The MICA locus is highly polymorphic with more than 50 recognized human alleles. MICA is absent from most cells but is frequently expressed in epithelial tumors and can be induced by bacterial and viral infections. MICA is a ligand for human NKG2D, an activating receptor expressed on NK cells, NKT cells, gamma δ T cells, and CD8+  alpha beta  T cells. Recognition of MICA by NKG2D results in the activation of cytolytic activity and/or cytokine production by these effector cells. MICA recognition is involved in tumor surveillance, viral infections, and autoimmune diseases.

  • References:
    1. Groh, V. et al. (2001) Nature Immunol. 2:255.
    2. Stephens, H. (2001) Trends Immunol. 22:378.
    3. Bauer, S. et al. (1999) Science 285:727.
    4. Groh, V. et al. (2002) Nature 419:734.
    5. Steinle, A. et al. (2001) Immunogenetics 53:279.
    6. Pende, D. et al. (2002) Cancer Res. 62:6178.
    7. NKG2D and its Ligands (2002) http://www.RnDSystems.com
  • Long Name:
    MHC Class I-related Protein A
  • Entrez Gene IDs:
    100507436 (Human)
  • Alternate Names:
    FLJ60820; MGC111087; MICA; PERB11.1
Related Research Areas
Citations:

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.

6 Citations: Showing 1 - 6
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Species
Applications
Sample Type
  1. Homo-oligomerization of the activating natural killer cell receptor NKp30 ectodomain increases its binding affinity for cellular ligands.
    Authors: Herrmann, Julia, Berberich, Hannah, Hartmann, Jessica, Beyer, Steffen, Davies, Karen, Koch, Joachim
    J Biol Chem, 2014;289(2):765-77.
    Species: Moth - Trichoplusia ni (Cabbage Looper)
    Sample Type: Cell Culture Supernates
    Application: ELISA Development
  2. Compartmental localization and clinical relevance of MICA antibodies after renal transplantation.
    Authors: Li L, Chen A, Chaudhuri A, Kambham N, Sigdel T, Chen R, Sarwal MM
    Transplantation, 2010;89(3):312-9.
    Species: Human
    Sample Type: Whole Tissue
    Application: IHC Paraffin-embedded
  3. Interferon-gamma down-regulates NKG2D ligand expression and impairs the NKG2D-mediated cytolysis of MHC class I-deficient melanoma by natural killer cells.
    Authors: Schwinn N, Vokhminova D, Sucker A, Textor S, Striegel S, Moll I, Nausch N, Tuettenberg J, Steinle A, Cerwenka A, Schadendorf D, Paschen A
    Int. J. Cancer, 2009;124(7):1594-604.
    Species: Human
    Sample Type: Cell Lysates
    Application: WB
  4. An unusual CD56(bright) CD16(low) NK cell subset dominates the early posttransplant period following HLA-matched hematopoietic stem cell transplantation.
    Authors: Dulphy N, Haas P, Busson M, Belhadj S, Peffault de Latour R, Robin M, Carmagnat M, Loiseau P, Tamouza R, Scieux C, Rabian C, Di Santo JP, Charron D, Janin A, Socie G, Toubert A
    J. Immunol., 2008;181(3):2227-37.
    Species: Human
    Sample Type: Whole Tissue
    Application: IHC Frozen
  5. NK cells recognize and lyse Ewing sarcoma cells through NKG2D and DNAM-1 receptor dependent pathways.
    Authors: Verhoeven DH, de Hooge AS, Mooiman EC, Santos SJ, ten Dam MM, Gelderblom H, Melief CJ, Hogendoorn PC, Egeler RM, van Tol MJ, Schilham MW, Lankester AC
    Mol. Immunol., 2008;45(15):3917-25.
    Species: Human
    Sample Type: Whole Tissue
    Application: IHC Paraffin-embedded
  6. Human tumor-derived exosomes selectively impair lymphocyte responses to interleukin-2.
    Authors: Clayton A, Mitchell JP, Court J, Mason MD, Tabi Z
    Cancer Res., 2007;67(15):7458-66.
    Species: Human
    Sample Type: Cell Lysates
    Application: WB
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