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TIM-3 Antibody (F38-2E2) [FITC]

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Flow, CyTOF-ready
Clone
F38-2E2
Clonality
Monoclonal
Host
Mouse
Conjugate
FITC

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TIM-3 Antibody (F38-2E2) [FITC] Summary

Additional Information
Clone F38-2E2 was used by HLDA to establish CD designation.
Immunogen
This antibody was raised against recombinant human TIM-3. [Uniprot# Q8TDQ0]
Isotype
IgG1 Kappa
Clonality
Monoclonal
Host
Mouse
Gene
HAVCR2
Purity
Protein G purified
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Applications/Dilutions

Dilutions
  • CyTOF-ready
  • Flow (Cell Surface)
  • Flow Cytometry
Application Notes
Optimal dilution of this antibody should be experimentally determined.

Packaging, Storage & Formulations

Storage
Store at 4C in the dark.
Buffer
PBS
Preservative
0.05% Sodium Azide
Purity
Protein G purified

Notes

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 TIM-3 Antibody (F38-2E2) [FITC]

  • CD366
  • FLJ14428
  • HAVCR2
  • HAVcr-2
  • hepatitis A virus cellular receptor 2
  • kidney injury molecule-3
  • KIM-3
  • SPTCL
  • T cell immunoglobulin mucin 3
  • T cell immunoglobulin mucin-3
  • T-cell immunoglobulin and mucin domain-containing protein 3
  • TIM 3
  • TIM3 T-cell membrane protein 3
  • TIM3
  • TIM-3
  • TIMD3
  • TIMD-3
  • TIMD3KIM-3

Background

T cell immunoglobulin and mucin-domain containing 3 (TIM-3) is a type I transmembrane protein that functions in suppressing immune cell responses and is considered a checkpoint receptor (1,2). TIM-3 is an inhibitory receptor that was first identified as a cell marker for interferon-gamma (IFN-gamma)-producing CD4+ T helper (Th1) and CD8+ T cytotoxic (Tc1) cells (1,2). TIM-3 is also expressed on other immune cell types: regulatory T cells (Treg), natural killer (NK) cells, macrophages, and dendritic cells (DCs), as well as leukemia stem cells (LSCs) (1-3). Human TIM-3 protein is 301 amino acids (aa) in length with a theoretical molecular weight (MW) of 33.4 kDa and shares ~63% aa sequence identity with mouse TIM-3 (2,4). The TIM-3 protein has an extracellular IgV domain, a mucin and stalk domain with O- and N-glycosylation sites, a transmembrane domain, and an intracellular tail with conserved tyrosine residues (2,3). Ligands for TIM-3 include soluble galectin-9, high-mobility group protein B1 (HMGB1), phosphatidylserine (PtdSer), and carcinoembyronic antigen-related cell adhesion molecule-1 (CEACAM-1) (1-3,5). Each of these ligands interact with different regions of the TIM-3 IgV domain. In the absence of ligand binding, the unphosphorylated intracellular tyrosine residues of TIM-3 are associated with HLA-B associated transcript 3 (Bat3), which recruits Lck and this Bat3-Lck complex preserves T cell signaling (1-3,5). When TIM-3 is engaged, an intracellular signaling cascade is initiated to inhibit immune cell activation. (1-3,5). Specifically, the tyrosine residues of TIM-3 are phosphorylated, Bat3 is released, and this results in suppression of immune responses (1-3, 5). Persistent, sustained TIM-3 signaling eventually results in T cell exhaustion (1-3,5).

Dysregulation of TIM-3 expression is associated with autoimmune diseases as shown by studies where inhibition of TIM-3 using blocking antibodies worsened disease progression in experimental autoimmune encephalomyelitis (EAE) models of multiple sclerosis (MS) (2,3,5). Conversely, high levels of TIM-3 have been shown during viral infection as well as in many cancer types where its increased expression may be an indicator of poor prognosis (2,3,5). TIM-3 has emerged as a potential cancer immunotherapy target as preclinical studies blocking TIM-3 results in increased anti-tumor immunity and prevents tumor growth (3,5). Studies have suggested combination therapy of TIM-3 blockade with blockade of other checkpoint inhibitors such as programmed death 1 (PD-1) or lymphocyte activation gene 3 (LAG-3) is more effective than TIM-3 blockade alone (3,5).

References

1. Acharya N, Sabatos-Peyton C, Anderson AC. Tim-3 finds its place in the cancer immunotherapy landscape. J Immunother Cancer. 2020; 8(1):e000911. https://doi.org/10.1136/jitc-2020-000911

2. Das M, Zhu C, Kuchroo VK. Tim-3 and its role in regulating anti-tumor immunity. Immunol Rev. 2017; 276(1):97-111. https://doi.org/10.1111/imr.12520

3. Joller N, Kuchroo VK. Tim-3, Lag-3, and TIGIT. Curr Top Microbiol Immunol. 2017; 410:127-156. https://doi.org/10.1007/82_2017_62

4. Uniprot (Q8TDQ0)

5. Wolf Y, Anderson AC, Kuchroo VK. TIM3 comes of age as an inhibitory receptor. Nat Rev Immunol. 2020; 20(3):173-185. https://doi.org/10.1038/s41577-019-0224-6

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.

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Bioinformatics

Gene Symbol HAVCR2