Galectin-9 Antibody (1005401) [Alexa Fluor® 700]

• Reactivity: Hu
• Applications: IHC
• Clone: 1005401
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Alexa Fluor 700

Galectin-9 Antibody (1005401) [Alexa Fluor® 700] Summary

• Immunogen: E. coli-derived human Galectin-9
  Ala2-Thr323
  Accession # O00182
• Specificity: Detects human Galectin-9 in direct ELISAs.
• Isotype: IgG2b
• Clonality: Monoclonal
• Host: Mouse
• Purity Statement: Protein A or G purified

Applications/Dilutions

• Dilutions:
  • Immunohistochemistry

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Galectin-9 Antibody (1005401) [Alexa Fluor® 700]

• Ecalectin
• GAL9
• gal-9
• galectin 9
• Galectin9
• Galectin-9
• HUAT
• lectin, galactoside-binding, soluble, 9
• LGALS9
• LGALS9A
• MGC117375
• MGC125973
• MGC125974
• Tumor antigen HOM-HD-21
• urate transporter/channel protein

Background

Galectins comprise a family of multifunctional carbohydrate-binding proteins with specificity for N‑acetyl-lactosamine-containing glycoproteins. At least 14 mammalian Galectins share structural similarities in their carbohydrate recognition domains (CRD), forming three groups: prototype (one CRD), tandem-repeat (two CRDs), and chimeric (one CRD, unique N‑terminus) (1, 2). Full length Galectin-9 is a widely expressed 39 kDa tandem-repeat Galectin that contains two CRDs connected by a linker region (3). Progressive deletion within the linker region generates a 36 kDa isoform, also known as Ecalectin or UAT, as well as a 35 kDa isoform (4). This recombinant protein corresponds to the Ecalectin isoform of human Galectin-9 and shares 70% and 73% aa sequence identity with the corresponding regions of mouse and rat Galectin-9, respectively. Galectin-9 exhibits a wide range of activities. All three isoforms function as eosinophil chemoattractants (5, 6). This activity is destroyed by thrombin-mediated cleavage within the linker region of the long isoform, although the Ecalectin isoform is resistant to thrombin (7). Galectin-9 binds to carbohydrate moieties of IgE, thereby preventing immune complex formation, mast cell degranulation, and asthmatic and cutaneous anaphylaxis reactions (8). Independent of its lectin properties, Galectin-9 induces the maturation of dendritic cells which promote Th1 polarization (9). Galectin-9 induces cellular apoptosis in part by direct binding to TIM-3 (10, 11). Its interaction with TIM-3 inhibits Th1 cell and CD8⁺ cytotoxic T cell responses and also promotes regulatory T cell differentiation and activity (11, 12). Galectin-9 suppresses tumor cell metastasis by interfering with the associations between hyaluronic acid and CD44 and between VCAM-1 and Integrin alpha 4 beta 1 (13). The Ecalectin isoform (UAT; urate transporter) can also be expressed as an integral membrane protein and mediate the cellular efflux of urate (14).

Limitations

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.