| Structural highlights
Function
HAVR2_HUMAN Regulates macrophage activation. Inhibits T-helper type 1 lymphocyte (Th1)-mediated auto- and alloimmune responses and promotes immunological tolerance. May be also involved in T-cell homing. Receptor for LGALS9.[1] [2]
Publication Abstract from PubMed
T-cell immunoglobulin and mucin domain-containing molecule 3 (TIM-3; HAVCR2) has emerged as an attractive immune checkpoint target for cancer immunotherapy. TIM-3 is a negative regulator of the systemic immune response to cancer and is expressed on several dysfunctional, or exhausted, immune cell subsets. Upregulation of TIM-3 is associated with tumor progression, poor survival rates, and acquired resistance to antibody-based immunotherapies in the clinic. Despite the potential advantages of small-molecule inhibitors over antibodies, the discovery of small-molecule inhibitors has lagged behind that of antibody therapeutics. Here, we describe the discovery of high-affinity small-molecule ligands for TIM-3 through an NMR-based fragment screen and structure-based lead optimization. These compounds represent useful tools to further study the biology of TIM-3 immune modulation in cancer and serve as a potentially useful starting point toward the discovery of TIM-3-targeted therapeutics.
Fragment-Based Discovery of Small Molecules Bound to T-Cell Immunoglobulin and Mucin Domain-Containing Molecule 3 (TIM-3).,Rietz TA, Teuscher KB, Mills JJ, Gogliotti RD, Lepovitz LT, Scaggs WR, Yoshida K, Luong K, Lee T, Fesik SW J Med Chem. 2021 Oct 1. doi: 10.1021/acs.jmedchem.1c01336. PMID:34597046[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Sanchez-Fueyo A, Tian J, Picarella D, Domenig C, Zheng XX, Sabatos CA, Manlongat N, Bender O, Kamradt T, Kuchroo VK, Gutierrez-Ramos JC, Coyle AJ, Strom TB. Tim-3 inhibits T helper type 1-mediated auto- and alloimmune responses and promotes immunological tolerance. Nat Immunol. 2003 Nov;4(11):1093-101. Epub 2003 Oct 12. PMID:14556005 doi:http://dx.doi.org/10.1038/ni987
- ↑ Zhu C, Anderson AC, Schubart A, Xiong H, Imitola J, Khoury SJ, Zheng XX, Strom TB, Kuchroo VK. The Tim-3 ligand galectin-9 negatively regulates T helper type 1 immunity. Nat Immunol. 2005 Dec;6(12):1245-52. Epub 2005 Nov 13. PMID:16286920 doi:http://dx.doi.org/10.1038/ni1271
- ↑ Rietz TA, Teuscher KB, Mills JJ, Gogliotti RD, Lepovitz LT, Scaggs WR, Yoshida K, Luong K, Lee T, Fesik SW. Fragment-Based Discovery of Small Molecules Bound to T-Cell Immunoglobulin and Mucin Domain-Containing Molecule 3 (TIM-3). J Med Chem. 2021 Oct 1. doi: 10.1021/acs.jmedchem.1c01336. PMID:34597046 doi:http://dx.doi.org/10.1021/acs.jmedchem.1c01336
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