HLA G Antibody

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-16855

Novus Biologicals, part of Bio-Techne
Catalog #
Availability
Size / Price
Qty
NBP2-16855
Print Quote
Bulk Order
100% Guarantee

Key Product Details

Species Reactivity

Human

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit IgG

Concentration

Concentrations vary lot to lot. See vial label for concentration. If unlisted please contact technical services.

View all HLA-G Antibodies »

Product Specifications

Immunogen

Recombinant protein encompassing a sequence within the center region of human HLA G. The exact sequence is proprietary.

Localization

Membrane; Single-pass type I membrane protein

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Theoretical MW

38 kDa.
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.

Scientific Data Images for HLA G Antibody

Western Blot: HLA G Antibody [NBP2-16855]

Western Blot: HLA G Antibody [NBP2-16855]

Western Blot: HLA G Antibody [NBP2-16855] - Various whole cell extracts (30 ug) were separated by 10% SDS-PAGE, and the membrane was blotted with HLA-G antibody diluted at 1:500.
Immunohistochemistry-Paraffin: HLA G Antibody [NBP2-16855]

Immunohistochemistry-Paraffin: HLA G Antibody [NBP2-16855]

Immunohistochemistry-Paraffin: HLA G Antibody [NBP2-16855] - Human lung cancer. HLA-G antibody diluted at 1:500. Antigen Retrieval: Citrate buffer, pH 6.0, 15 min
Immunohistochemistry-Paraffin: HLA G Antibody [NBP2-16855]

Immunohistochemistry-Paraffin: HLA G Antibody [NBP2-16855]

Immunohistochemistry-Paraffin: HLA G Antibody [NBP2-16855] - Mahlarvu xenograft, using HLA-G antibody at 1:500 dilution. Antigen Retrieval: TrilogyTM (EDTA based) buffer, 15min
View 1 more images

Applications for HLA G Antibody

Application
Recommended Usage

Immunohistochemistry

1:100-1:1000

Immunohistochemistry-Paraffin

1:100-1:1000

Western Blot

1:500-1:3000

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Formulation

0.1M Tris-Glycine (pH7), 20% Glycerol

Preservative

0.01% Thimerosal

Concentration

Concentrations vary lot to lot. See vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Aliquot and store at -20C or -80C. Avoid freeze-thaw cycles.

Background: HLA-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).

References

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

Long Name

Major Histocompatibility Complex, Class I, G

Alternate Names

HLA G, HLA-6.0, HLAG, MHC Class I Antigen G, MHC-G

Gene Symbol

HLA-G

UniProt

P17693 (Human)

Additional HLA-G Products

Product Documents for HLA G Antibody

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Download SDS

Product Specific Notices for HLA G Antibody

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.

⚠ WARNING: This product can expose you to chemicals including mercury, which is known to the State of California to cause reproductive toxicity with developmental effects.  For more information go to www.P65Warnings.ca.gov.

Privacy and Cookie Policy
Site Map
© Copyright 2024 Bio-Techne. All Rights Reserved.