Céline M. Laumont

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For decades, the global impact of genomic polymorphisms on the repertoire of peptides presented by major histocompatibility complex (MHC) has remained a matter of speculation. Here we present a novel approach that enables high-throughput discovery of polymorphic MHC class I-associated peptides (MIPs), which play a major role in allorecognition. On the basis(More)
MHC I-associated peptides (MIPs) play an essential role in normal homeostasis and diverse pathologic conditions. MIPs derive mainly from defective ribosomal products (DRiPs), a subset of nascent proteins that fail to achieve a proper conformation and the physical nature of which remains elusive. In the present study, we used high-throughput proteomic and(More)
In view of recent reports documenting pervasive translation outside of canonical protein-coding sequences, we wished to determine the proportion of major histocompatibility complex (MHC) class I-associated peptides (MAPs) derived from non-canonical reading frames. Here we perform proteogenomic analyses of MAPs eluted from human B cells using high-throughput(More)
In a context where injection of antigen (Ag)-specific T cells probably represents the future of leukemia immunotherapy, identification of optimal target Ags is crucial. We therefore sought to discover a reliable marker for selection of the most potent Ags. To this end, (1) we immunized mice against 8 individual Ags: 4 minor histocompatibility Ags (miHAs)(More)
T-cell development and function are regulated by MHC-associated self peptides, collectively referred to as the immunopeptidome. Large-scale mass spectrometry studies have highlighted three key features of the immunopeptidome. First, it is not a mirror of the proteome or the transcriptome, and its content cannot be predicted with currently available(More)
MEK Mitogen-activated protein kinase MHC Major histocompatibility complex NK Natural killer NKT Natural killer T PD-1 Programmed cell death protein-1 PD-L Programmed death ligand RAS RAS-type GTPase family RGMb Repulsive guidance molecule b RNF43 Ring finger protein 43 TAC T cell antigen coupler TEX Tumor-derived exosomes TIL Tumor-infiltrating lymphocytes(More)
Cryptic MHC I-associated peptides (MAPs) are produced via two mechanisms: translation of protein-coding genes in non-canonical reading frames and translation of allegedly non-coding sequences. In general, cryptic MAPs are coded by relatively short open reading frames whose translation can be regulated at the level of initiation, elongation or termination.(More)
Graduate students and postdoctoral fellows at the Institute for Research in Immunology and Cancer (IRIC) organized the 9th IRIC International Symposium on 14-15 May, 2015. The symposium was held at the IRIC, an ultra-modern research hub and training center located on the hilltop of the Université de Montréal campus in Montreal, Canada. This year's title was(More)
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