PMID- 20303356 OWN - NLM STAT- MEDLINE DCOM- 20100804 LR - 20211020 IS - 1528-0012 (Electronic) IS - 0016-5085 (Print) IS - 0016-5085 (Linking) VI - 139 IP - 1 DP - 2010 Jul TI - Human risk allele HLA-DRB1*0405 predisposes class II transgenic Ab0 NOD mice to autoimmune pancreatitis. PG - 281-91 LID - 10.1053/j.gastro.2010.03.038 [doi] AB - BACKGROUND & AIMS: Autoimmune pancreatitis (AIP) underlies 5%-11% of cases of chronic pancreatitis. An association between AIP and the human leukocyte antigen (HLA)-DRB1*0405/DQB1*0401 haplotype has been reported, but linkage disequilibrium has precluded the identification of predisposing HLA gene(s). We studied the role of single HLA genes in the development of AIP in transgenic mice. METHODS: CD4(+) T-cell-negative I-Abeta chain(-/-) (Ab0) mice develop AIP spontaneously, likely due to dysregulation of CD8(+) T- cell responses. We generated Ab0 nonobese diabetic (NOD) mice transgenic for HLA-DR*0405, leading to rescue of CD4(+) T cells; we compared their susceptibility to AIP with HLA-DQ8 or HLA-DR*0401 (single) transgenic, or HLA-DR*0405/DQ8 (double) transgenic mice. RESULTS: CD4(+) T-cell-competent HLA-DR*0405 transgenic Ab0 NOD mice develop AIP with high prevalence after sublethal irradiation and adoptive transfer of CD90(+) T cells, leading to complete pancreatic atrophy. HLA-DR*0405 transgenic mice can also develop unprovoked AIP, whereas HLA-DR*0401, HLA-DQ8, and HLA-DR*0405/DQ8 transgenic Ab0 NOD controls all remained normal, even after irradiation and adoptive transfer of CD90(+) T cells. Pancreas histology in HLA-DR*0405 transgenic mice was characterized by destructive infiltration of the exocrine tissue with CD4(+) and CD8(+) T cells, B cells, and macrophages. Mice with complete pancreatic atrophy lost weight, developed fat stools, and had reduced levels of serum lipase activity. CONCLUSIONS: Because HLA-DR*0405 expression fails to protect mice from AIP, the HLA-DRB1*0405 allele appears to be an important risk factor for AIP on the HLA-DRB1*0405/DQB1*0401 haplotype. This humanized mouse model should be useful for studying immunopathogenesis, diagnostic markers, and therapy of human AIP. CI - Copyright 2010 AGA Institute. Published by Elsevier Inc. All rights reserved. FAU - Freitag, Tobias L AU - Freitag TL AD - Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA. tobias.freitag@helsinki.fi FAU - Cham, Candace AU - Cham C FAU - Sung, Hsiang-Hsuan AU - Sung HH FAU - Beilhack, Georg F AU - Beilhack GF FAU - Durinovic-Bello, Ivana AU - Durinovic-Bello I FAU - Patel, Salil D AU - Patel SD FAU - Bronson, Roderick T AU - Bronson RT FAU - Schuppan, Detlef AU - Schuppan D FAU - Sonderstrup, Grete AU - Sonderstrup G LA - eng GR - P01 DK055364-02/DK/NIDDK NIH HHS/United States GR - R01 DK072288-02/DK/NIDDK NIH HHS/United States GR - DK72288/DK/NIDDK NIH HHS/United States GR - R01 DK072288/DK/NIDDK NIH HHS/United States GR - DK55364/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20100318 PL - United States TA - Gastroenterology JT - Gastroenterology JID - 0374630 RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (HLA-DRB1*04:05 antigen) RN - EC 3.1.1.3 (Lipase) SB - IM MH - Adoptive Transfer MH - Animals MH - Atrophy MH - Autoimmune Diseases/*etiology/genetics/pathology MH - Female MH - *Genes, MHC Class II MH - HLA-DR Antigens/*genetics/physiology MH - HLA-DRB1 Chains MH - Humans MH - Lipase/blood MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred NOD MH - Mice, Transgenic MH - Pancreas/pathology MH - Pancreatitis, Chronic/*etiology/genetics/pathology MH - Risk PMC - PMC2902648 MID - NIHMS189785 EDAT- 2010/03/23 06:00 MHDA- 2010/08/05 06:00 PMCR- 2011/07/01 CRDT- 2010/03/23 06:00 PHST- 2009/12/01 00:00 [received] PHST- 2010/02/22 00:00 [revised] PHST- 2010/03/10 00:00 [accepted] PHST- 2010/03/23 06:00 [entrez] PHST- 2010/03/23 06:00 [pubmed] PHST- 2010/08/05 06:00 [medline] PHST- 2011/07/01 00:00 [pmc-release] AID - S0016-5085(10)00393-8 [pii] AID - 10.1053/j.gastro.2010.03.038 [doi] PST - ppublish SO - Gastroenterology. 2010 Jul;139(1):281-91. doi: 10.1053/j.gastro.2010.03.038. Epub 2010 Mar 18.