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AB237720

Anti-LAG-3 抗体 [CAL77]

Anti-LAG-3 antibody [CAL77]

  • 20ul selling size
  • BOND RX™ Validated
  • RabMAb
  • Recombinant
  • 詳細を見る

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(2 Publications)

Rabbit Recombinant Monoclonal LAG-3 antibody. Suitable for Flow Cyt (Intra), IHC-P and reacts with Mouse, Human samples. Cited in 2 publications.

別名を表示する

CD223, FDC, LAG3, Lymphocyte activation gene 3 protein, LAG-3

6 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-LAG-3 antibody [CAL77] (AB237720)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-LAG-3 antibody [CAL77] (AB237720)

Immunohistochemical analysis of paraffin-embedded human tonsil tissue labeling LAG-3 with ab237720 at 1/900 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Positive staining on the human tonsil is observed. The section was incubated with ab237720 for 15 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with hematoxylin. Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP). Perform heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 30 mins.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-LAG-3 antibody [CAL77] (AB237720)
  • IHC-P

Lab

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-LAG-3 antibody [CAL77] (AB237720)

Immunohistochemical analysis of paraffin-embedded human tonsil tissue labeling LAG-3 with ab237720 at 1/900 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Positive staining on the human tonsil is observed. The section was incubated with ab237720 for 15 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with hematoxylin. Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP). Perform heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 30 mins.

Flow Cytometry (Intracellular) - Anti-LAG-3 antibody [CAL77] (AB237720)
  • Flow Cyt (Intra)

Lab

Flow Cytometry (Intracellular) - Anti-LAG-3 antibody [CAL77] (AB237720)

Flow cytometric analysis of 2% paraformaldehyde-fixed, 0.1% Tween-20 permeabilized human peripheral blood mononuclear cell (PBMC) treated with 10μg/ml PHA for 2 days, labeling LAG-3 with ab237720 at 1/500 (right panel) compared with a Rabbit monoclonal IgG (ab172730) (left panel). Goat anti rabbit IgG (Alexa Fluor® 488, ab150077), at 1/2000 dilution was used as the secondary antibody. Cells were surface stained with anti-CD3 conjugated to Alexa Fluor® 647. Then fixed with 2% PFA for 10min followed by intracellular staining with rabbit IgG (Left) and ab237720 (Right).

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-LAG-3 antibody [CAL77] (AB237720)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-LAG-3 antibody [CAL77] (AB237720)

Formalin-fixed, paraffin-embedded human tonsil tissue stained for LAG-3 with ab237720 at 0.25 μg/ml in immunohistochemical analysis.

Flow Cytometry (Intracellular) - Anti-LAG-3 antibody [CAL77] (AB237720)
  • Flow Cyt (Intra)

Lab

Flow Cytometry (Intracellular) - Anti-LAG-3 antibody [CAL77] (AB237720)

Flow cytometry staining of human peripheral blood mononuclear cells (PBMCs) (top) or PBMCs treated with 5 μg/ml phytohaemagglutinin (PHA) for 48 hours (bottom), with ab237720 (right) or Recombinant Rabbit IgG, monoclonal [EPR25A] - Isotype Control (left). Cells were fixed and permeabilised with BD Cytofix/Cytoperm™ for 20 min. PBMCs were incubated for 30 min on ice in 1x PBS containing 10 μg/ml human IgG and 10 % normal goat serum to block FC receptors and non-specific protein-protein interaction followed by the antibody ab237720 or Recombinant Rabbit IgG, monoclonal [EPR25A] - Isotype Control (1x 106in 100 μl at 0.2 μg/ml (1/12750)) for 30 min at 22°C . The cells were simultaneously stained with CD3.

The secondary antibody Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) preadsorbed was incubated at 1/4000 for 30min at 22°C

Acquisition of >30000 events were collected using a 50 mW Blue laser (488nm) and 525/40 bandpass filter. Events were gated on live cells.

Flow Cytometry (Intracellular) - Anti-LAG-3 antibody [CAL77] (AB237720)
  • Flow Cyt (Intra)

Lab

Flow Cytometry (Intracellular) - Anti-LAG-3 antibody [CAL77] (AB237720)

Intracellular flow cytometric analysis of 2% paraformaldehyde-fixed, 0.1%Tween-20 permeabilized mouse splenocytes treated with 2.5μg/ml Concanavalin A (ConA) for 3 days, labeling LAG-3 with ab237720 at 1/500 (right panel) compared with a Rabbit monoclonal IgG (ab172730) (left panel). Goat anti rabbit IgG (Alexa Fluor® 488, ab150077), at 1/2000 dilution was used as the secondary antibody. Cells were surface stained with anti-CD3 conjugated to Alexa Fluor® 647. Then fixed with 2% PFA for 10min followed by intracellular staining with rabbit IgG (Left) and ab237720 (Right).

関連する標識済み抗体及び組成の異なる製品 (4)

Key facts

宿主種

Rabbit

クローン性

Monoclonal

クローン番号

CAL77

アイソタイプ

IgG

キャリアフリー

No

交差種

Mouse, Human

アプリケーション

Flow Cyt (Intra), IHC-P

applications

免疫原

The exact immunogen used to generate this antibody is proprietary information.

特異性

IHC-P is only recommended for human samples. We obtained negative staining results with mouse.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"}, "FlowCytIntra" : {"fullname" : "Flow Cytometry (Intracellular)", "shortname":"Flow Cyt (Intra)"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "notRecommended", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "WB-species-checked": "notRecommended", "WB-species-dilution-info": "", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "testedAndGuaranteed", "FlowCytIntra-species-dilution-info": "1/500", "FlowCytIntra-species-notes": "<p></p>", "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/900", "IHCP-species-notes": "<p></p> Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol." }, "Mouse": { "IP-species-checked": "notRecommended", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "WB-species-checked": "notRecommended", "WB-species-dilution-info": "", "WB-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "testedAndGuaranteed", "FlowCytIntra-species-dilution-info": "1/500", "FlowCytIntra-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p> Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol." } } }

出荷温度及び保存条件

製品の状態
Liquid
精製方法
Affinity purification Protein A
精製に関する特記事項
Purity is greater than 99%.
バッファー組成
pH: 7.2 - 7.4 Preservative: 0.05% Sodium azide Constituents: PBS
出荷温度
Blue Ice
短期保存期間
1-2 weeks
短期保存温度
+4°C
長期保存温度
-20°C
分注に関する情報
Upon delivery aliquot
保管に関する情報
Avoid freeze / thaw cycle

補足情報

This supplementary information is collated from multiple sources and compiled automatically.

LAG-3 also known as CD223 is a transmembrane protein with a mass of approximately 70 kDa. It acts as a checkpoint molecule similar to CTLA-4 and PD-1 in the immune system. LAG-3 is expressed on activated T cells natural killer cells and some dendritic cells. It interacts with its ligand MHC class II leading to inhibition of cellular proliferation and cytokine secretion an important part of immune response regulation.
Biological function summary

LAG-3 is involved in maintaining immune homeostasis and preventing autoimmunity. It is not part of a complex but works in synergy with other immune checkpoint molecules. When interacting with MHC class II LAG-3 transmits inhibitory signals that attenuate immune cell responses. Its role in immune regulation helps to balance immune activation and tolerance which is essential for preventing tissue damage while protecting against pathogens.

Pathways

The inhibitory role of LAG-3 integrates into the T cell receptor (TCR) signaling pathway and is also linked to the PD-1 signaling pathway. In TCR signaling LAG-3 negatively regulates T cell activation. LAG-3 is functionally related to proteins like PD-1 and CTLA-4 sharing similar roles in immune checkpoint pathways that are critical for maintaining immune balance.

LAG-3 has links to cancer and autoimmune diseases. In cancer LAG-3 expression on tumor-infiltrating lymphocytes correlates with immune evasion by tumors. This relationship appears in various cancers including melanoma and renal cell carcinoma. In autoimmune diseases LAG-3's expression on regulatory T cells helps control conditions such as multiple sclerosis. It collaborates with CTLA-4 in modulating immune responses that prevent excessive immune activation and tissue damage associated with autoimmunity.

製品プロトコール

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ターゲットの情報

Lymphocyte activation gene 3 protein. Inhibitory receptor on antigen activated T-cells (PubMed : 20421648, PubMed : 35761082, PubMed : 7805750, PubMed : 8647185). Delivers inhibitory signals upon binding to ligands, such as MHC class II, its main ligand present at the surface of antigen-presenting cells (APCs), and FGL1, which is secreted by hepatocytes and certain types of tumor cells (PubMed : 30580966, PubMed : 32920841, PubMed : 35761082, PubMed : 39671469, PubMed : 7589152, PubMed : 8647185, PubMed : 9159144). Ligand-binding initiates a signaling that inhibits the T-cell receptor (TCR) in the immunological synapse, preventing T-cell activation (PubMed : 40101708). Mechanistically, ligand-binding promotes (1) ubiquitination of the KIEELE motif, unleashing the RRFSALE motif from the membrane and (2) leading to the formation of condensates with the TCR component CD3E, thereby disrupting the association between CD3E and LCK and preventing TCR activation (PubMed : 40101708, PubMed : 40592325). May inhibit antigen-specific T-cell activation in synergy with PDCD1/PD-1 (By similarity). Negatively regulates the proliferation, activation, effector function and homeostasis of both CD8(+) and CD4(+) T-cells (PubMed : 20421648, PubMed : 7805750, PubMed : 8647185). Also mediates immune tolerance : constitutively expressed on a subset of regulatory T-cells (Tregs) and contributes to their suppressive function (By similarity). Also acts as a negative regulator of plasmacytoid dendritic cell (pDCs) activation (By similarity).. The LAG3-mediated inhibitory pathway is exploited by tumors to attenuate anti-tumor immunity and escape destruction by the immune system, thereby facilitating tumor survival (PubMed : 35981087, PubMed : 40101708). The blockage of the LAG3- and PDCD1-mediated pathways results in the reversal of the exhausted T-cell phenotype and the normalization of the anti-tumor response, providing a rationale for cancer immunotherapy (PubMed : 35981087, PubMed : 40101708).. Secreted lymphocyte activation gene 3 protein. May function as a ligand for MHC class II (MHC-II) on antigen-presenting cells (APC), promoting APC activation/maturation and driving Th1 immune response.
See full target information LAG3

文献 (2)

Recent publications for all applications. Explore the full list and refine your search

Frontiers in immunology 16:1537520 PubMed40061944

2025

infection may increase the degrees of malignancy in lung adenocarcinoma.

Applications

Unspecified application

Species

Unspecified reactive species

Shanshan Li,Mengru Feng,Fenghua Wang,Dongxu Liu,Mingyan Li,Jinlong Dai,Yan Yang,Yinghui Chai,Wen Chen

Nature communications 15:1909 PubMed38429294

2024

synNotch-programmed iPSC-derived NK cells usurp TIGIT and CD73 activities for glioblastoma therapy.

Applications

Unspecified application

Species

Unspecified reactive species

Kyle B Lupo,Xue Yao,Shambhavi Borde,Jiao Wang,Sandra Torregrosa-Allen,Bennett D Elzey,Sagar Utturkar,Nadia A Lanman,MacKenzie McIntosh,Sandro Matosevic
View all publications

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