T cell receptor (TCR) mimics offer a promising platform for tumor-specific targeting of peptide-MHC in cancer immunotherapy. Here, we designed a α-helical TCR mimic (TCRm) specific for the NY-ESO-1 peptide presented by HLA-A 02, achieving high on-target specificity with nanomolar affinity (K = 9.5 nM). The structure of the TCRm/pMHC complex at Å resolution revealed a rigid TCR-like docking mode with an unusual degree of focus on the up-facing NY-ESO-1 side chains, suggesting the potential for reduced off-target reactivity. Indeed, a structure-informed screen of 14,363 HLA-A 02 peptides correctly predicted two off-target peptides, yet our TCRm maintained a wide therapeutic window as a T cell engager. These results represent a path for precision targeting of tumor antigens with peptide-focused α-helical TCR mimics.
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| http://dx.doi.org/10.1101/2024.12.16.628822 | DOI Listing |
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T cell receptor (TCR) mimics offer a promising platform for tumor-specific targeting of peptide-MHC in cancer immunotherapy. Here, we designed a α-helical TCR mimic (TCRm) specific for the NY-ESO-1 peptide presented by HLA-A 02, achieving high on-target specificity with nanomolar affinity (K = 9.5 nM).
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Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong SAR, China; Shenzhen Research Institute, City University of Hong Kong, Shenzhen, China. Electronic address:
Background: Gut commensal microbiota has been identified as a potential environmental risk factor for multiple sclerosis (MS), and numerous studies have linked the commensal microorganism with the onset of MS. However, little is known about the mechanisms underlying the gut microbiome and host-immune system interaction.
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Alloy Therapeutics, 275 2nd Avenue, Waltham, MA 02451, USA.
Effectively targeting intracellular tumor-associated proteins presents a formidable challenge in oncology, as they are traditionally considered inaccessible to conventional antibody-based therapies and CAR-T cell therapies. However, recent advancements in antibody engineering have revolutionized this field, offering promising new strategies to combat cancer. This review focuses on the innovative use of T-cell receptor mimic (TCRm) antibodies within the therapeutic frameworks of T-cell engagers (TCE) and antibody-drug conjugates (ADCs).
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