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Title: How C-terminal additions to insulin B-chain fragments create superagonists for T cells in mouse and human type 1 diabetes

Journal Article · · Science Immunology
ORCiD logo [1];  [2]; ORCiD logo [3];  [3];  [3]; ORCiD logo [1];  [3]; ORCiD logo [3];  [4]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [5];  [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. National Jewish Health, Denver, CO (United States); Univ. of Colorado, Aurora, CO (United States)
  2. Univ. of Colorado, Aurora, CO (United States)
  3. National Jewish Health, Denver, CO (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Benaroya Research Inst., Seattle, WA (United States)

In type 1 diabetes (T1D), proinsulin is a major autoantigen and the insulin B:9-23 peptide contains epitopes for CD4+ T cells in both mice and humans. This peptide requires carboxyl-terminal mutations for uniform binding in the proper position within the mouse IAg7 or human DQ8 major histocompatibility complex (MHC) class II (MHCII) peptide grooves and for strong CD4+ T cell stimulation. In this work, we present crystal structures showing how these mutations control CD4+ T cell receptor (TCR) binding to these MHCII-peptide complexes. Our data reveal stricking similarities between mouse and human CD4+ TCRs in their interactions with these ligands. We also show how fusions between fragments of B:9-23 and of proinsulin C-peptide create chimeric peptides with activities as strong or stronger than the mutated insulin peptides. We propose transpeptidation in the lysosome as a mechanism that could accomplish these fusions in vivo, similar to the creation of fused peptide epitopes for MHCI presentation shown to occur by transpeptidation in the proteasome. Were this mechanism limited to the pancreas and absent in the thymus, it could provide an explanation for how diabetogenic T cells escape negative selection during development but find their modified target antigens in the pancreas to cause T1D.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC); National Institutes of Health (NIH)
Grant/Contract Number:
5T32-AI-074491; ES-025797; ES025885; AI-018785; DK-032083; P01AI-118688; 1-PNF-2015-126-A-R; KL2 TR001080; GM103403; S10 RR029205
OSTI ID:
1569904
Journal Information:
Science Immunology, Vol. 4, Issue 34; ISSN 2470-9468
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

References (62)

Prime role for an insulin epitope in the development of type 1 diabetes in NOD mice journal May 2005
An insulin-IAPP hybrid peptide is an endogenous antigen for CD4 T cells in the non-obese diabetic mouse journal March 2017
Specificity and detection of insulin-reactive CD4+ T cells in type 1 diabetes in the nonobese diabetic (NOD) mouse journal September 2011
Structural evidence for a germline-encoded T cell receptor–major histocompatibility complex interaction 'codon' journal August 2007
Register shifting of an insulin peptide–MHC complex allows diabetogenic T cells to escape thymic deletion journal November 2011
Refinement of Macromolecular Structures by the Maximum-Likelihood Method journal May 1997
Overview of the CCP 4 suite and current developments journal March 2011
Peptide and Major Histocompatibility Complex–Specific Breaking of Humoral Tolerance to Native Insulin With the B9-23 Peptide in Diabetes-Prone and Normal Mice journal June 2001
A subset of HLA-I peptides are not genomically templated: Evidence for cis- and trans-spliced peptide ligands journal October 2018
T cell receptor restriction of diabetogenic autoimmune NOD T cells journal March 1997
Two-step binding mechanism for T-cell receptor recognition of peptide–MHC journal August 2002
Pancreatic islets communicate with lymphoid tissues via exocytosis of insulin peptides journal July 2018
Immune recognition of a human renal cancer antigen through post-translational protein splicing journal January 2004
High Resolution Structures of Highly Bulged Viral Epitopes Bound to Major Histocompatibility Complex Class I: IMPLICATIONS FOR T-CELL RECEPTOR ENGAGEMENT AND T-CELL IMMUNODOMINANCE journal April 2005
Production of soluble MHC class II proteins with covalently bound single peptides journal May 1994
Development of the Nonobese Diabetic Mouse and Contribution of Animal Models for Understanding Type 1 Diabetes journal January 2017
Islet-Derived CD4 T Cells Targeting Proinsulin in Human Autoimmune Diabetes journal December 2016
Autoreactive T cells specific for insulin B:11-23 recognize a low-affinity peptide register in human subjects with autoimmune diabetes journal September 2014
Pathogenic CD4 T cells in type 1 diabetes recognize epitopes formed by peptide fusion journal February 2016
Germline TRAV5D-4 T-Cell Receptor Sequence Targets a Primary Insulin Peptide of NOD Mice journal February 2012
XDS journal January 2010
Natural peptides selected by diabetogenic DQ8 and murine I-Ag7 molecules show common sequence specificity journal August 2005
Celiac disease and transglutaminase 2: a model for posttranslational modification of antigens and HLA association in the pathogenesis of autoimmune disorders journal December 2011
Chromogranin A is an autoantigen in type 1 diabetes journal February 2010
Transpeptidation and reverse proteolysis and their consequences for immunity journal January 2009
Autoantigenesis: the evolution of protein modifications in autoimmune disease journal February 2012
Antigen recognition properties of mutant V beta 3+ T cell receptors are consistent with an immunoglobulin-like structure for the receptor journal January 1993
Epitope specificity, cytokine production profile and diabetogenic activity of insulin-specific T cell clones isolated from NOD mice journal April 1995
Insulin autoimmunity: prediction/precipitation/prevention type 1A diabetes journal May 2002
The Insulin-Specific T Cells of Nonobese Diabetic Mice Recognize a Weak MHC-Binding Segment in More Than One Form journal May 2007
PARP1 exhibits enhanced association and catalytic efficiency with γH2A.X-nucleosome journal December 2019
C-terminal modification of the insulin B:11–23 peptide creates superagonists in mouse and human type 1 diabetes journal December 2017
Cavin1 intrinsically disordered domains are essential for fuzzy electrostatic interactions and caveola formation journal February 2021
Regulatory vs. inflammatory cytokine T-cell responses to mutated insulin peptides in healthy and type 1 diabetic subjects journal March 2015
A large fraction of HLA class I ligands are proteasome-generated spliced peptides journal October 2016
Crossreactive T Cells Spotlight the Germline Rules for αβ T Cell-Receptor Interactions with MHC Molecules journal March 2008
Intracellular degradation of insulin and crinophagy are maintained by nitric oxide and cyclo-oxygenase 2 activity in isolated pancreatic islets journal May 2006
Features and development of Coot journal March 2010
N-terminal additions to the WE14 peptide of chromogranin A create strong autoantigen agonists in type 1 diabetes journal October 2015
T Cell Antigen Receptor Recognition of Antigen-Presenting Molecules journal March 2015
Autoimmunity to specific citrullinated proteins gives the first clues to the etiology of rheumatoid arthritis journal January 2010
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
SWISS-MODEL and the Swiss-Pdb Viewer: An environment for comparative protein modeling journal January 1997
Diabetogenic T cells recognize insulin bound to IAg7 in an unexpected, weakly binding register journal June 2010
Overview of the CCP4 suite and current developments. text January 2011
A Multipotential Leukemia Cell Line (K-562) of Human Origin journal April 1981
NMRPipe: A multidimensional spectral processing system based on UNIX pipes journal November 1995
Stock-based detection of protein oligomeric states in jsPISA journal April 2015
Identification of Hybrid Insulin Peptides (HIPs) in Mouse and Human Islets by Mass Spectrometry journal December 2018
A Time-Resolved Fluorescence Immunoassay (DELFIA) Increases the Sensitivity of Antigen-Driven Cytokine Detection journal January 2003
Analysis of the Spontaneous T Cell Response to Insulin in NOD Mice journal December 1994
CELL BIOLOGY: Cutting and Pasting Antigenic Peptides journal April 2004
Do MHCII-Presented Neoantigens Drive Type 1 Diabetes and Other Autoimmune Diseases? journal August 2012
Multi-functionality of a tryptophan residue conserved in substrate-binding groove of GH19 chitinases journal January 2021
Affinity maturation of human CD4 by yeast surface display and crystal structure of a CD4-HLA-DR1 complex journal September 2011
An Antigenic Peptide Produced by Peptide Splicing in the Proteasome journal April 2004
Unique features in the presentation of insulin epitopes in autoimmune diabetes: an update journal June 2017
Development of T cell lines sensitive to antigen stimulation journal November 2018
Phaser crystallographic software journal July 2007
Structure of an Autoimmune T Cell Receptor Complexed with Class II Peptide-MHC journal January 2005
[20] Processing of X-ray diffraction data collected in oscillation mode book January 1997
PHENIX: a comprehensive Python-based system for macromolecular structure solution. text January 2010

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