KEGG   PATHWAY: zca04940
Entry
zca04940                    Pathway                                
Name
Type I diabetes mellitus - Zalophus californianus (California sea lion)
Description
Type I diabetes mellitus is a disease that results from autoimmune destruction of the insulin-producing beta-cells. Certain beta-cell proteins act as autoantigens after being processed by antigen-presenting cell (APC), such as macrophages and dendritic cells, and presented in a complex with MHC-II molecules on the surface of the APC. Then immunogenic signals from APC activate CD4+ T cells, predominantly of the Th1 subset. Antigen-activated Th1 cells produce IL-2 and IFNgamma. They activate macrophages and cytotoxic CD8+ T cells, and these effector cells may kill islet beta-cells by one or both of two types of mechanisms: (1) direct interactions of antigen-specific cytotoxic T cells with a beta-cell autoantigen-MHC-I complex on the beta-cell, and (2) non-specific inflammatory mediators, such as free radicals/oxidants and cytokines (IL-1, TNFalpha, TNFbeta, IFNgamma).
Type I diabetes is a polygenic disease. One of the principle determining genetic factors in diabetes incidence is the inheritance of mutant MHC-II alleles. Another plausible candidate gene is the insulin gene.
Class
Human Diseases; Endocrine and metabolic disease
Pathway map
zca04940  Type I diabetes mellitus
zca04940

Organism
Zalophus californianus (California sea lion) [GN:zca]
Gene
113914580  INS; insulin [KO:K04526]
113923008  GAD2; glutamate decarboxylase 2 [KO:K01580] [EC:4.1.1.15]
113919900  GAD1; glutamate decarboxylase 1 [KO:K01580] [EC:4.1.1.15]
113911589  PTPRN2; receptor-type tyrosine-protein phosphatase N2 isoform X3 [KO:K07817] [EC:3.1.3.48]
113920048  PTPRN; receptor-type tyrosine-protein phosphatase-like N isoform X1 [KO:K07817] [EC:3.1.3.48]
113925330  CPE; carboxypeptidase E [KO:K01294] [EC:3.4.17.10]
113920960  HSPD1; 60 kDa heat shock protein, mitochondrial [KO:K04077] [EC:5.6.1.7]
113935353  60 kDa heat shock protein, mitochondrial-like [KO:K04077] [EC:5.6.1.7]
113911602  ICA1; islet cell autoantigen 1 isoform X1 [KO:K19863]
113926580  HLA class II histocompatibility antigen, DQ beta 1 chain isoform X1 [KO:K06752]
113926581  HLA class II histocompatibility antigen, DQ alpha 2 chain [KO:K06752]
113926803  DLA class II histocompatibility antigen, DR-1 beta chain [KO:K06752]
113927163  HLA class II histocompatibility antigen, DO beta chain isoform X1 [KO:K06752]
113927388  HLA class II histocompatibility antigen, DM beta chain [KO:K06752]
113926241  HLA class II histocompatibility antigen, DO alpha chain [KO:K06752]
113927833  HLA class II histocompatibility antigen, DM alpha chain [KO:K06752]
113927977  LOW QUALITY PROTEIN: HLA class II histocompatibility antigen, DP beta 1 chain [KO:K06752]
113927976  LOW QUALITY PROTEIN: HLA class II histocompatibility antigen, DP alpha 1 chain [KO:K06752]
113927972  DLA class II histocompatibility antigen, DR-1 beta chain-like [KO:K06752]
113928077  HLA class II histocompatibility antigen, DR alpha chain [KO:K06752]
113928060  HLA class II histocompatibility antigen, DR alpha chain [KO:K06752]
113916214  CD80; T-lymphocyte activation antigen CD80 [KO:K05412]
113918869  CD86; T-lymphocyte activation antigen CD86 isoform X1 [KO:K05413]
113920789  CD28; LOW QUALITY PROTEIN: T-cell-specific surface glycoprotein CD28 [KO:K06470]
113916510  IL12A; interleukin-12 subunit alpha isoform X1 [KO:K05406]
113929340  IL12B; interleukin-12 subunit beta [KO:K05425]
113925933  IL2; interleukin-2 [KO:K05429]
113922097  IFNG; interferon gamma isoform X1 [KO:K04687]
113926316  HLA class I histocompatibility antigen, A alpha chain [KO:K06751]
113927768  HLA class I histocompatibility antigen, alpha chain G-like [KO:K06751]
113927989  translation initiation factor IF-2 [KO:K06751]
113926585  HLA class I histocompatibility antigen, alpha chain G-like isoform X1 [KO:K06751]
113915714  patr class I histocompatibility antigen, B-2 alpha chain-like [KO:K06751]
113915700  DLA class I histocompatibility antigen, A9/A9 alpha chain-like [KO:K06751]
113915741  patr class I histocompatibility antigen, A-126 alpha chain-like [KO:K06751]
118357226  DLA class I histocompatibility antigen, A9/A9 alpha chain-like [KO:K06751]
113931754  FASLG; tumor necrosis factor ligand superfamily member 6 [KO:K04389]
113921804  FAS; tumor necrosis factor receptor superfamily member 6 [KO:K04390]
113921679  PRF1; perforin-1 [KO:K07818]
113909272  duodenase-1-like [KO:K01353] [EC:3.4.21.79]
113910204  granzyme B-like [KO:K01353] [EC:3.4.21.79]
113927753  LTA; lymphotoxin-alpha [KO:K05468]
113927740  TNF; tumor necrosis factor [KO:K03156]
113938273  IL1A; interleukin-1 alpha isoform X1 [KO:K04383]
113937839  IL1B; interleukin-1 beta [KO:K04519]
Compound
C00027  Hydrogen peroxide
C00533  Nitric oxide
C00704  Superoxide
Reference
PMID:9719467
  Authors
Rabinovitch A, Suarez-Pinzon WL.
  Title
Cytokines and their roles in pancreatic islet beta-cell destruction and insulin-dependent diabetes mellitus.
  Journal
Biochem Pharmacol 55:1139-49 (1998)
DOI:10.1016/S0006-2952(97)00492-9
Reference
  Authors
Cox NJ, Wapelhorst B, Morrison VA, Johnson L, Pinchuk L, Spielman RS, Todd JA, Concannon P
  Title
Seven regions of the genome show evidence of linkage to type 1 diabetes in a consensus analysis of 767 multiplex families.
  Journal
Am J Hum Genet 69:820-30 (2001)
DOI:10.1086/323501
Reference
PMID:8072542
  Authors
Davies JL, Kawaguchi Y, Bennett ST, Copeman JB, Cordell HJ, Pritchard LE, Reed PW, Gough SC, Jenkins SC, Palmer SM, et al.
  Title
A genome-wide search for human type 1 diabetes susceptibility genes.
  Journal
Nature 371:130-6 (1994)
DOI:10.1038/371130a0
Reference
PMID:8786033
  Authors
Fujisawa T, Ikegami H, Kawaguchi Y, Yamato E, Takekawa K, Nakagawa Y, Hamada Y, Ueda H, Shima K, Ogihara T.
  Title
Class I HLA is associated with age-at-onset of IDDM, while class II HLA confers susceptibility to IDDM.
  Journal
Diabetologia 38:1493-5 (1995)
DOI:10.1007/BF00400620
Reference
  Authors
Jaeckel E, Klein L, Martin-Orozco N, von Boehmer H.
  Title
Normal incidence of diabetes in NOD mice tolerant to glutamic acid decarboxylase.
  Journal
J Exp Med 197:1635-44 (2003)
DOI:10.1084/jem.20030215
Reference
  Authors
Nakayama M, Abiru N, Moriyama H, Babaya N, Liu E, Miao D, Yu L, Wegmann DR, Hutton JC, Elliott JF, Eisenbarth GS.
  Title
Prime role for an insulin epitope in the development of type 1 diabetes in NOD mice.
  Journal
Nature 435:220-3 (2005)
DOI:10.1038/nature03523
Reference
  Authors
Kent SC, Chen Y, Bregoli L, Clemmings SM, Kenyon NS, Ricordi C, Hering BJ, Hafler DA.
  Title
Expanded T cells from pancreatic lymph nodes of type 1 diabetic subjects recognize an insulin epitope.
  Journal
Nature 435:224-8 (2005)
DOI:10.1038/nature03625
Reference
  Authors
Lieberman SM, DiLorenzo TP.
  Title
A comprehensive guide to antibody and T-cell responses in type 1 diabetes.
  Journal
Tissue Antigens 62:359-77 (2003)
DOI:10.1034/j.1399-0039.2003.00152.x
Reference
  Authors
Lord SJ, Rajotte RV, Korbutt GS, Bleackley RC.
  Title
Granzyme B: a natural born killer.
  Journal
Immunol Rev 193:31-8 (2003)
DOI:10.1034/j.1600-065X.2003.00044.x
Related
pathway
zca04210  Apoptosis
zca04660  T cell receptor signaling pathway
KO pathway
ko04940   
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