Cutting edge: CD4 T cells reactive to an islet amyloid polypeptide peptide accumulate in the pancreas and contribute to disease pathogenesis in nonobese diabetic mice.
Cutting edge: CD4 T cells reactive to an islet amyloid polypeptide peptide accumulate in the pancreas and contribute to disease pathogenesis in nonobese diabetic mice.
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DOI:
10.4049/jimmunol.1301480
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发表时间:
2013-10-15
期刊:
影响因子:
--
通讯作者:
Haskins K
中科院分区:
文献类型:
--
作者:
Baker RL;Delong T;Barbour G;Bradley B;Nakayama M;Haskins K
We previously reported a peptide KS20 from islet amyloid polypeptide (IAPP) to be the target antigen for a highly diabetogenic CD4 T cell clone BDC-5.2.9. In order to track IAPP-reactive T cells in NOD mice and determine how they contribute to the pathogenesis of type 1 diabetes (T1D), we designed a new I-Ag7 tetramer with high affinity for BDC-5.2.9 that contains the peptide KS20. We found that significant numbers of KS20 tetramer-positive CD4 T cells can be detected in the pancreas of pre-diabetic and diabetic NOD mice. To verify pathogenicity of IAPP-reactive cells, KS20 tetramer-positive cells were sorted and cloned from uncloned T cell lines isolated from spleen and lymph nodes of diabetic mice. We isolated a new KS20-reactive Th1 CD4 T cell clone that rapidly transfers diabetes. Our results suggest that IAPP triggers a broad autoimmune response by CD4 T cells in NOD mice.
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影响因子:
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作者:
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DOI:
10.1073/pnas.0705894104
发表时间:
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影响因子:
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作者:
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