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Anti-BSLF2/BMLF1 T cell receptor (AS01), pCDTCR1 (TCR-YC0141)

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All products and services are For Research Use Only and CANNOT be used in the treatment or diagnosis of disease.

The archetypal AS01 TCR is likely to be one of the most common and numerically frequent αβ TCRs in humans. This is based on the following considerations: (i) the HLA-A*0201 allele is arguably the most common and widespread MHC-I allele in humans, with frequencies above 60% in certain regions; (ii) EBV is one of the most successfully disseminated human pathogens, persistently infecting more than 90% of individuals; (iii) the GLC-A2 antigen is one of the most immunodominant CD8+ T cell targets across the EBV proteome; (iv) GLC-specific CD8+ T cell responses are amongst the largest observed, both in the EBV system and in comparative terms with respect to other human pathogens studied thus far; and, (v) the GLC-specific response is dominated by CD8+ T cells that bear a public TRAV5/TRBV20-1 receptor.

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Details

  • Target
  • BSLF2/BMLF1
  • Target Species
  • EBV
  • Epitope
  • GLCTLVAML
  • Format
  • Non-Modified TCR
  • Allele
  • HLA-A
  • Vector Name
  • pCDTCR1
  • Vector Length
  • ~ 8 kb
  • Vector Type
  • Lentiviral vector
  • TCR Clone
  • AS01
  • Host Species
  • Human

Target

  • Introduction
  • Epstein-Barr virus (EBV), also called human herpesvirus 4 (HHV-4), is a genetically stable agent that has slowly co-evolved with our species and its antecedents for millions of years. EBV is typically transmitted orally during childhood, propagates in B cells and epithelia, and is shed for the lifetime of the host. More than 90% of the world's population is infected with EBV. This mutual coexistence is not without heavy resource cost for the host. Large populations of CD8+ αβ T lymphocytes are deployed for the purposes of EBV surveillance and suppression. These populations peak during asymptomatic primary infection, acute infectious mononucleosis (AIM) and old age. Across the entire EBV proteome, one of the most immunogenic CD8+ T cell targets is the HLA-A*0201-restricted GLCTLVAML peptide derived from the BMLF1 protein (residues 280–288; herein referred to as GLC-A2). During primary infection, up to 11% of the total peripheral CD8+ T cell pool can be specific for GLC-A2; this response contracts to 0.5–2.2% of the peripheral CD8+ T cell pool during persistent infection, but can swell again to 10% in old age. Given the high in vivo frequencies of this response and the ubiquity of both EBV infection and the HLA-A*0201 allele, it is unsurprising that GLC-A2 is one of the most studied HLA class-I target antigens. Interestingly, initial investigations into the clonotypic nature of the GLC-A2 response revealed that CD8+ T cells are deployed with a biased T cell receptor (TCR) repertoire that is stable over time.

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For research use only. Not intended for any clinical use. No products from Creative Biolabs may be resold, modified for resale or used to manufacture commercial products without prior written approval from Creative Biolabs.

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