HLAG antibody

Catalog No. ABIN2749037

Product Details anti-HLAG Antibody

Target: HLAG (HLA Class I Histocompatibility Antigen, alpha Chain G (HLAG))

Reactivity: Human

Host: Mouse

Clonality: Monoclonal

Conjugate: This HLAG antibody is un-conjugated

Application: ELISA, Flow Cytometry (FACS), Immunohistochemistry (Frozen Sections) (IHC (fro))

Specificity: The antibody 87G recognizes both membrane-bound and soluble forms of HLA-G (HLA-G1 and HLA-G5). HLA-G belongs to the MHC Class I molecules (MHC Class Ib, nonclassical) and it is expressed on the surface of trophoblast cells.

No Cross-Reactivity: Mouse, Rat

Cross-Reactivity (Details): Human

Purification: Purified by protein-A affinity chromatography.

Purity: > 95 % (by SDS-PAGE)

Endotoxin Level: Endotoxin level is less than 0.01 EU/µg of the protein, as determined by the LAL test.

Immunogen: HLA-B27 transgenic mice were imunized with H-2 identical murine cells transfected with and expressing genes encoding HLA-G and human beta2-microglobulin.

Clone: 87G

Isotype: IgG2a

Application Details

Application Notes: Flow cytometry: Extracellular and intracellular staining, recommended dilution: 2 μg/mL, positive control: JEG-3 human choriocarcinoma epithelial cell line. Immunohistochemistry (frozen sections): Recommended dilution: 10 μg/mL, incubation: 20 min at 25 °C, positive tissue: extravillous cytotrophoblast. ELISA: Recommended dilution: 1 μg/mL, positive control: JEG-3 human choriocarcinoma epithelial cell line. The antibody 87G has been tested as the capture antibody in a sandwich ELISA for analysis of human HLA-G in combination with antibody W6/32.

Restrictions: For Research Use only

Handling

Concentration: 1 mg/mL

Buffer: Phosphate buffered saline (PBS), pH 7.4

Preservative: Azide free

Storage: 4 °C

Storage Comment: Store at 2-8°C. Do not freeze.

References for anti-HLAG antibody (ABIN2749037)

LeMaoult, Caumartin, Daouya, Favier, Le Rond, Gonzalez, Carosella: "Immune regulation by pretenders: cell-to-cell transfers of HLA-G make effector T cells act as regulatory cells." in: Blood, Vol. 109, Issue 5, pp. 2040-8, (2007) (PubMed).

Shobu, Sageshima, Tokui, Omura, Saito, Nagatsuka, Nakanishi, Hayashi, Hatake, Ishitani: "The surface expression of HLA-F on decidual trophoblasts increases from mid to term gestation." in: Journal of reproductive immunology, Vol. 72, Issue 1-2, pp. 18-32, (2006) (PubMed).

Rouas-Freiss, Moreau, Ferrone, Carosella: "HLA-G proteins in cancer: do they provide tumor cells with an escape mechanism?" in: Cancer research, Vol. 65, Issue 22, pp. 10139-44, (2005) (PubMed).

Ishitani, Sageshima, Lee, Dorofeeva, Hatake, Marquardt, Geraghty: "Protein expression and peptide binding suggest unique and interacting functional roles for HLA-E, F, and G in maternal-placental immune recognition." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 171, Issue 3, pp. 1376-84, (2003) (PubMed).

Menier, Saez, Horejsi, Martinozzi, Krawice-Radanne, Bruel, Le Danff, Reboul, Hilgert, Rabreau, Larrad, Pla, Carosella, Rouas-Freiss: "Characterization of monoclonal antibodies recognizing HLA-G or HLA-E: new tools to analyze the expression of nonclassical HLA class I molecules." in: Human immunology, Vol. 64, Issue 3, pp. 315-26, (2003) (PubMed).

Poláková, Bandzuchová, Hofmeister, Weiss, Hutter, Russ: "Binding analysis of HLA-G specific antibodies to hematopoietic cells isolated from leukemia patients." in: Neoplasma, Vol. 50, Issue 5, pp. 331-8, (2003) (PubMed).

Poláková, Krcová, Kuba, Russ: "Analysis of HLA-G expression in malignant hematopoetic cells from leukemia patients." in: Leukemia research, Vol. 27, Issue 7, pp. 643-8, (2003) (PubMed).

Sageshima, Ishitani, Omura, Akasaki, Umekage, Katabuchi, Okamura, Hatake: "Necrotic feature of the trophoblasts lacking HLA-G expression in normal and pre-eclamptic placentas." in: American journal of reproductive immunology (New York, N.Y. : 1989), Vol. 49, Issue 3, pp. 174-82, (2003) (PubMed).

Wiendl, Mitsdoerffer, Hofmeister, Wischhusen, Weiss, Dichgans, Lochmuller, Hohlfeld, Melms, Weller: "The non-classical MHC molecule HLA-G protects human muscle cells from immune-mediated lysis: implications for myoblast transplantation and gene therapy." in: Brain : a journal of neurology, Vol. 126, Issue Pt 1, pp. 176-85, (2002) (PubMed).

Riteau, Menier, Khalil-Daher, Martinozzi, Pla, Dausset, Carosella, Rouas-Freiss: "HLA-G1 co-expression boosts the HLA class I-mediated NK lysis inhibition." in: International immunology, Vol. 13, Issue 2, pp. 193-201, (2001) (PubMed).

Target Details for HLAG

Target: HLAG (HLA Class I Histocompatibility Antigen, alpha Chain G (HLAG))

Alternative Name: HLA-G (HLAG Products)

Synonyms: MHC-G antibody, B-F antibody, B-F-S04 antibody, B-F-S05 antibody, B-F-S06 antibody, B-F-S07 antibody, B-FI antibody, B-FIV antibody, BF2 antibody, BFa2 antibody, BFw-03 antibody, BFw-05 antibody, BFz-01 antibody, major histocompatibility complex, class I, G antibody, MHC BF1 class I antibody, HLA-G antibody, BF1 antibody

Background: Major histocompatibility complex, class I, G,Human leukocyte antigen G (HLA-G), belonging to MHC class I glycoproteins, plays important roles in both physiological and pathological immunotolerance. It gives an inhibitory signal to cytotoxic T cells, NK cells, monocytes, and some other immune cells. It also induces regulatory T cells and anti-inflammatory macrophages. HLA-G is important e.g. for maternal tolerance to the fetus, and for immunomodulation in particular adult tissues, such as in cornea, pancreatic islets, thymus and other. On the other hand, it is expressed in many solid and hematologic malignancies, where it contributes to evasion of the immune surveillance. HLA-G expression pattern in cancer is an important prognostic factor regarding a poor clinical outcome. Unlike most other MHC glycoproteins, HLA-G acts as an immune checkpoint molecule rather than as an antigen presenting molecule. It concerns both transmembrane and soluble HLA-G isoforms. Among other, HLA-G can promote Th2 immunological response and downregulate Th1 immunological response. For its benefits regarding allograft tolerance, including embryo implantation, soluble HLA-G (sHLA-G) can be used as a marker of developmental potential of embryos during the process of in vitro fertilization. Similarly, sHLA-G concentrations in maternal serum are decreased in preeclampsia. Transplanted patients with increased sHLA-G serum levels have improved allograft acceptance. On the other hand, increased sHLA-G can also indicate presence of malignant (sometimes also of benign) tumor cells. Another important topic is induction of HLA-G expression (sometimes associated with shedding of HLA-G from the cell surface) by some anti-cancer or anti-viral therapies, which can weaken the therapy effect. Monitoring of HLA-G in patients thus has a wide usage.

Gene ID: 3135

UniProt: P17693

Pathways: Regulation of Leukocyte Mediated Immunity, Positive Regulation of Immune Effector Process, Cancer Immune Checkpoints, Human Leukocyte Antigen (HLA) in Adaptive Immune Response