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Key Documents

MABF2657

Sigma-Aldrich

Anti-TIGIT Antibody, clone 1G9

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.74

biological source

mouse

Quality Level

conjugate

unconjugated

antibody form

purified antibody

antibody product type

primary antibodies

clone

1G9, monoclonal

mol wt

calculated mol wt 26.96 kDa
observed mol wt ~31 kDa

purified by

using protein G

species reactivity

mouse

packaging

antibody small pack of 100 μL

technique(s)

ELISA: suitable
flow cytometry: suitable
western blot: suitable

isotype

IgG1

epitope sequence

Unknown

UniProt accession no.

shipped in

dry ice

target post-translational modification

unmodified

Gene Information

General description

T-cell immunoreceptor with Ig and ITIM domains (UniProt: P86176; also known as V-set and immunoglobulin domain-containing protein 9, TIGIT) is encoded by the Tigit (also known as Vstm3) gene (Gene ID: 100043314) in murine species. TIGIT is a single-pass type I, homodimeric, membrane protein that is synthesized with a signal peptide (aa 1-28), which is subsequently cleaved off to generate the mature form that contains an extracellular domain (aa 29-148), a transmembrane domain (aa 149-169), and a cytoplasmic domain (aa 170-249). The cytoplasmic domain contains an immunoreceptor tyrosine-based inhibitor motif (ITIM; aa 234-239), which is involved in the modulation of its cellular responses. It serves as a coinhibitory receptors with CD226 and is expressed on NK cells, activated T cells, memory T cells, and a subset of regulatory T cells and blocks immune responses by affecting T cells and APCs. It is shown to bind to poliovirus receptor (PVR) with high affinity to form a heterotetrameric assembly of two TIGIT and two PVR molecules. This causes increased secretion of IL-10 and decreased secretion of IL-12B and suppresses T-cell activation by promoting the generation of mature immunoregulatory dendritic cells. TIGIT also serves as a functional ligand and induces dendritic cells to acquire a tolerogenic phenotype via ligation of PVR. TIGIT -/- mice, when challenged, develop severe experimental autoimmune encephalomyelitis compared to wild-type mice. Loss of TIGIT also in mice also results in hyperproliferative T cell responses and increased susceptibility to autoimmunity. (Ref.: Dixon, KO., et al. (2018). J. Immunol. 200(8); 3000-3007; Joller, N., et al. (2011). J. Immunol. 186(3); 1338-1342).

Specificity

Clone 1G9 is a mouse monoclonal antibody that detects murine T-cell immunoreceptor with Ig and ITIM domains (TIGIT).

Immunogen

TIGIT knockout mice immunized with recombinant mouse TIGIT tetramers.

Application

Quality Control Testing

Evaluated by Western Blotting in RAW264.7 cell lysate.

Western Blotting Analysis: A 1:1,000 dilution of this antibody detected T-cell immunoreceptor with Ig and ITIM domains (TIGIT) s in RAW264.7 cell lysate.

Tested Applications

Western Blotting Analysis: A 1:1,000 dilution from a representative lot detected TIGIT in mouse thymus tissue lysate.

ELISA Analysis: A representative lot detected TIGIT in ELISA applications (Joller, N., et al. (2011). J Immunol. 186(3):1388-42).

Flow Cytometry Analysis: A representative lot detected TIGIT in Flow Cytometry applications (Joller, N., et al. (2011). J Immunol. 186(3):1388-42).

Inhibition Assay: A representative lot of this antibody fully blocked CD155 binding to TIGIT. (Dixon, K.O., et al. (2018). J Immunol. 200(8):3000-3007).

Flow Cytometry Analysis: 1 μg from a representative lot detected TIGIT in one million Raw264.7 cells.

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user
Anti-TIGIT, clone 1G9, Cat. No. MABF2657, is a mouse monoclonal antibody that detects of T-cell immunoreceptor with Ig and ITIM domains (TIGIT) and is tested in ELISA, Flow Cytometry, Inhibition Assay, and Western Blotting.

Physical form

Purified mouse monoclonal antibody IgG1 in PBS without azide.

Storage and Stability

Store at -10°C to -25°C. Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class

12 - Non Combustible Liquids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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