The mouse monoclonal antibody 5A6G7 was generated to a peptide corresponding to C-intron 4-encoded sequence. This antibody does not crossreact with the full-length HLA-G1 isoform and thus allows to distinguish between secreted HLA-G5 and HLA-G6 isoforms from shedded HLA-G1.
Réactivité croisée (Details)
Human
Purification
Purified by protein-A affinity chromatography.
Pureté
> 95 % (by SDS-PAGE)
Immunogène
C-terminal amino acid sequence (22-mer) of soluble HLA-G5 and HLA-G6 proteins coupled to ovalbumin.
Flow cytometry: Recommended dilution: 1-4 μg/mL. Intracellular staining. Immunohistochemistry (frozen sections): Recommended dilution: 10 μg/mL, positive tissue: placenta. Immunohistochemistry (paraffin sections): Recommended dilution: 10 μg/mL, positive tissue: placenta. ELISA: Positive control: HeLa/HLA-G5 transfectants cell lysate, HeLa/HLA-G5 cell supernatant, negative control: HeLa cell lysate. The antibody 5A6G7 has been tested as the capture antibody in a sandwich ELISA for analysis of soluble HLA-G in combination with antibody W6/32 (cat. no. 1B-422-C100). Western blotting: Positive control: JEG-3 cell lysate, reducing conditions, 12 % AA SDS-PAGE.
Restrictions
For Research Use only
Concentration
1 mg/mL
Buffer
Phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide
Agent conservateur
Sodium azide
Précaution d'utilisation
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Conseil sur la manipulation
Do not freeze.
Stock
4 °C
Stockage commentaire
Store at 2-8°C. Do not freeze.
Poláková, Železníková, Russ: "HLA-G5 in the blood of leukemia patients and healthy individuals." dans: Leukemia research, Vol. 37, Issue 2, pp. 139-45, (2013) (PubMed).
Favier, Howangyin, Wu, Caumartin, Daouya, Horuzsko, Carosella, Lemaoult: "Tolerogenic Function of Dimeric Forms of HLA-G Recombinant Proteins: A Comparative Study In Vivo." dans: PLoS ONE, Vol. 6, Issue 7, pp. e21011, (2011) (PubMed).
Platonova, Cherfils-Vicini, Damotte, Crozet, Vieillard, Validire, André, Dieu-Nosjean, Alifano, Régnard, Fridman, Sautès-Fridman, Cremer: "Profound coordinated alterations of intratumoral NK cell phenotype and function in lung carcinoma." dans: Cancer research, Vol. 71, Issue 16, pp. 5412-22, (2011) (PubMed).
Gonzalez, Alegre, Torres, Duiaz-Lagares, Lorite, Palomeque, Arroyo: "Evaluation of HLA-G5 Plasmatic Levels During Pregnancy and Relationship with the 14-bp Polymorphism." dans: American journal of reproductive immunology (New York, N.Y. : 1989), (2010) (PubMed).
Lafon, Prehaud, Megret, Lafage, Mouillot, Roa, Moreau, Rouas-Freiss, Carosella: "Modulation of HLA-G expression in human neural cells after neurotropic viral infections." dans: Journal of virology, Vol. 79, Issue 24, pp. 15226-37, (2005) (PubMed).
Le Rond, Gonzalez, Gonzalez, Carosella, Rouas-Freiss: "Indoleamine 2,3 dioxygenase and human leucocyte antigen-G inhibit the T-cell alloproliferative response through two independent pathways." dans: Immunology, Vol. 116, Issue 3, pp. 297-307, (2005) (PubMed).
Rebmann, Lemaoult, Rouas-Freiss, Carosella, Grosse-Wilde: "Report of the Wet Workshop for Quantification of Soluble HLA-G in Essen, 2004." dans: Human immunology, Vol. 66, Issue 8, pp. 853-63, (2005) (PubMed).
Le Rond, Le Maoult, Créput, Menier, Deschamps, Le Friec, Amiot, Durrbach, Dausset, Carosella, Rouas-Freiss: "Alloreactive CD4+ and CD8+ T cells express the immunotolerant HLA-G molecule in mixed lymphocyte reactions: in vivo implications in transplanted patients." dans: European journal of immunology, Vol. 34, Issue 3, pp. 649-60, (2004) (PubMed).
Antigène
HLAG
(HLA Class I Histocompatibility Antigen, alpha Chain G (HLAG))
anticorps MHC-G, anticorps B-F, anticorps B-F-S04, anticorps B-F-S05, anticorps B-F-S06, anticorps B-F-S07, anticorps B-FI, anticorps B-FIV, anticorps BF2, anticorps BFa2, anticorps BFw-03, anticorps BFw-05, anticorps BFz-01, anticorps major histocompatibility complex, class I, G, anticorps MHC BF1 class I, anticorps HLA-G, anticorps BF1
Sujet
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.