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2014 ; 41
(4
): 657-69
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gab.com Text
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A minor subset of Batf3-dependent antigen-presenting cells in islets of
Langerhans is essential for the development of autoimmune diabetes
#MMPMID25367577
Ferris ST
; Carrero JA
; Mohan JF
; Calderon B
; Murphy KM
; Unanue ER
Immunity
2014[Oct]; 41
(4
): 657-69
PMID25367577
show ga
Autoimmune diabetes is characterized by inflammatory infiltration; however, the
initiating events are poorly understood. We found that the islets of Langerhans
in young nonobese diabetic (NOD) mice contained two antigen-presenting cell (APC)
populations: a major macrophage and a minor CD103(+) dendritic cell (DC)
population. By 4 weeks of age, CD4(+) T cells entered islets coincident with an
increase in CD103(+) DCs. In order to examine the role of the CD103(+) DCs in
diabetes, we examined Batf3-deficient NOD mice that lacked the CD103(+) DCs in
islets and pancreatic lymph nodes. This led to a lack of autoreactive T cells in
islets and, importantly, no incidence of diabetes. Additional examination
revealed that presentation of major histocompatibility complex (MHC) class I
epitopes in the pancreatic lymph nodes was absent with a partial impairment of
MHC class II presentation. Altogether, this study reveals that CD103(+) DCs are
essential for autoimmune diabetes development.