HLA G Antibody (87G) [Alexa Fluor® 700] Summary
721.221 cells transfected with full length HLA G cDNA with high surface HLA G Antibody (87G) expression. [UniProt# P17693]
Membrane bound HLA G1 and soluble HLA G5.
Protein G purified
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- Flow Cytometry
- Western Blot
The HLA G Antibody (87G) has been reported to work for Immunocytochemistry/Immunofluorescence and for blocking the interaction of HLA G with inhibitory receptors (see publications).
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Packaging, Storage & Formulations
Store at 4C in the dark.
50mM Sodium Borate
0.05% Sodium Azide
Protein G purified
Alexa Fluor (R) products are provided under an intellectual property license from Life Technologies Corporation. The purchase of this product conveys to the buyer the non-transferable right to use the purchased product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components, or any materials made using the product or its components, in any activity to generate revenue, which may include, but is not limited to use of the product or its components: (i) in manufacturing; (ii) to provide a service, information, or data in return for payment; (iii) for therapeutic, diagnostic or prophylactic purposes; or (iv) for resale, regardless of whether they are resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5791 Van Allen Way, Carlsbad, CA 92008 USA or email@example.com. This conjugate is made on demand. Actual recovery may vary from the stated volume of this product. The volume will be greater than or equal to the unit size stated on the datasheet.
Alternate Names for HLA G Antibody (87G) [Alexa Fluor® 700]
- b2 microglobulin
- HLA class I histocompatibility antigen, alpha chain G
- HLA class I molecule
- HLA G antigen
- HLA G
- HLA-G histocompatibility antigen, class I, G
- major histocompatibility complex, class I, G
- MHC Class I Antigen G
- MHC class Ib antigen
- mutant MHC class I antigen
- mutant MHC class Ib antigen
- Soluble HLA class I histocompatibility antigen, alpha chain G
Human leukocyte antigen (HLA)-G is a non-classical major histocompatibility complex (MHC) class I gene belonging to the HLA class I family. The HLA class I family is subdivided into the classical (HLA-Ia) antigens comprised of HLA-A, -B, and -C molecules and the nonclassical (HLA-Ib) group including the HLA-E, -F, and -G molecules. Seven different splice variants of HLA-G have been observed including four membrane isoforms (HLA-G1, HLA-G2, HLA-G3, and HLA-G4) and three soluble isoforms (HLA-G5, HLA-G6 and HLA-G7). Proteolytic processing of HLA-G1 by metalloproteinases (MMPs) such as MMP-2 produces the soluble isoform, shedding HLA-G1. The HLA-G1 and HLA-G5 isoforms share a similar confirmation to the classical MHC class I protein, consisting of three extracellular domains including alpha1, alpha2, and alpha3 associated with Beta-2-microglobulin (B2M). Other HLA-G variants are shorter, missing one or two of the globular domains and are not bound to B2M. HLA-G receptors include KIR2DL4 (CD158d), with the highest affinity for ILT2 (LILRB1, CD85j) and ILT4 (LILRB2, CD85d) (1,2).
Discovered in cytotrophoblasts, HLA-G is involved in fetal maternal immune tolerance and some studies have linked its downregulation with severe preeclampsia (3). HLA-G mediated immune suppression works by impeding cell proliferation, differentiation, cytotoxicity, cytokine secretion and chemotaxis; and activation of regulatory cells and MDSCs or M2 type macrophage. HLA-G is constitutively expressed in immune-privileged sites such as pancreatic islets, mesenchymal stem cells (MSCs) and the cornea. Upregulation of HLA-G occurs in pathological states including cancer, allo-transplantations, viral infections, autoimmune and inflammatory diseases (4). In cancer, HLA-G expression is induced by hypoxia and has been correlated with advanced tumor stage, tumor metastasis, and poor therapeutic response and survival. HLA-G is an attractive tumor associated-antigen (TAA) for immunotherapy and is considered a major immune checkpoint (ICP).
1. Loustau, M., Anna, F., Drean, R., Lecomte, M., Langlade-Demoyen, P., & Caumartin, J. (2020). HLA-G Neo-Expression on Tumors. Front Immunol, 11:1685. PMID: 32922387
2. Lin A, Yan WH. (2018) Heterogeneity of HLA-G Expression in Cancers: Facing the Challenges. Front Immunol. 9:2164. PMID: 30319626
3. Djurisic S, Hviid TV. (2014) HLA Class Ib Molecules and Immune Cells in Pregnancy and Preeclampsia. Front Immunol. 5:652. PMID: 25566263
4. Lila N, Rouas-Freiss N, Dausset J, Carpentier A, Carosella ED. (2001) Soluble HLA-G protein secreted by allo-specific CD4+ T cells suppresses the allo-proliferative response: a CD4+ T cell regulatory mechanism. Proc Natl Acad Sci U S A. 98(21):12150-12155. PMID: 11572934
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed
for 1 year from date of receipt.
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