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Idd-linked genetic ...
Idd-linked genetic regulation of TACIhigh expressing B cells in NOD mice
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- Sundström, Mia, 1980- (author)
- Umeå universitet,Immunologi/immunkemi,Kristina Lejon
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- Lejon, Kristina (author)
- Umeå universitet,Immunologi/immunkemi,Kristina Lejon
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(creator_code:org_t)
- Elsevier BV, 2007
- 2007
- English.
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In: Journal of Autoimmunity. - : Elsevier BV. - 0896-8411 .- 1095-9157. ; 29:2-3, s. 116-124
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- In NOD mice, B cells play a key role in the initiation of type 1 diabetes pathogenesis. We have identified a novel NOD-specific B cell-related trait, i.e. the increased percentage of TACI(high)-expressing splenic B cells, by comparing NOD mice with non-autoimmune C57BL/6 mice. Using athymic NOD mice, we determined that this trait was T cell independent. We mapped the loci contributing to the increased proportion of TACI(high) expressing splenic B cells and found that the control of TACI expression was strongly linked to chromosome 1, in a region which includes the insulin-dependent diabetes (Idd) 5 loci. Moreover, another locus potentially involved was detected in the vicinity of Idd22 on chromosome 8. Interestingly, when analyzing age-dependent contribution to the obtained LOD scores we observed that the linkage to chromosome 8 was explained solely by mice > or =61 days of age, suggesting a temporal genetic regulation of TACI expression. In addition, analysis of genetic interaction between chromosome 1 and chromosome 8 indicated that the two loci acted in an additive fashion. Our findings corroborate the notion that B cell deviations contribute to type 1 diabetes development, and suggest a temporal regulation of TACI(high) expression, possibly influenced by the ongoing autoimmune process.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
Keyword
- B cell; Genetics; NOD mouse; Temporal genetic regulation; TACI
Publication and Content Type
- ref (subject category)
- art (subject category)
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