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Anti-INS T cell receptor ((1E6)-7), pCDTCR1 (TCR-YC0559)

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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 1E6 T cell clone can recognize over 1 million different peptides with a potency comparable with, or better than, the cognate preproinsulin peptide ALWGPDPAAA. From this large functional scan, 7 different APLs were selected that activated the 1E6 T cell clone across a wide (4-log) functional range. Two of these peptides, MVWGPDPLYV and RQFGPDWIVA, are contained within the proteomes of the human pathogens Bacteroides fragilis/thetaiotaomicron and Clostridium asparagiforme, respectively. Competitive functional testing revealed that the preproinsulin-derived sequence ALWGPDPAAA was one of the least potent targets for 1E6, with only the MVWGPDPLYV and YLGGPDFPTI demonstrating a similar low-activity profile in MIP-1β secretion and target killing assays. The RQFGPDWIVA sequence activated the 1E6 T cell with around 1 log–greater potency compared with ALWGPDPAAA. At the other end of the spectrum, the RQFGPDFPTI peptide stimulated MIP-1β release and killing by 1E6 at an exogenous peptide concentration 2–3 logs lower compared with ALWGPDPAAA.

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Details

  • Target
  • INS
  • Target Species
  • Human
  • Epitope
  • YQFGPDFPIA
  • Format
  • Non-Modified TCR
  • Allele
  • HLA-A*02:01
  • Targeting Diseases
  • Insulin-dependent diabetes mellitus
  • Vector Name
  • pCDTCR1
  • Vector Length
  • ~ 8 kb
  • Vector Type
  • Lentiviral vector
  • TCR Clone
  • 1E6
  • Host Species
  • Human

Target

  • Introduction
  • After removal of the precursor signal peptide, proinsulin is post-translationally cleaved into three peptides: the B chain and A chain peptides, which are covalently linked via two disulfide bonds to form insulin, and C-peptide. Binding of insulin to the insulin receptor (INSR) stimulates glucose uptake. A multitude of mutant alleles with phenotypic effects have been identified. There is a read-through gene, INS-IGF2, which overlaps with this gene at the 5' region and with the IGF2 gene at the 3' region. Alternative splicing results in multiple transcript variants.

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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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