Ptpn22 and Cd2 Variations Are Associated with Altered Protein Expression and Susceptibility to Type 1 Diabetes in Nonobese Diabetic Mice
| العنوان: | Ptpn22 and Cd2 Variations Are Associated with Altered Protein Expression and Susceptibility to Type 1 Diabetes in Nonobese Diabetic Mice |
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| المؤلفون: | Fraser, Heather I, Howlett, Sarah, Clark, Jan, Rainbow, Daniel B, Stanford, Stephanie M, Wu, Dennis J, Hsieh, Yi-Wen, Maine, Christian J, Christensen, Mikkel, Kuchroo, Vijay, Sherman, Linda A, Podolin, Patricia L, Todd, John A, Steward, Charles A, Peterson, Laurence B, Bottini, Nunzio, Wicker, Linda S |
| المساهمون: | Apollo - University of Cambridge Repository |
| المصدر: | The Journal of Immunology Author Choice |
| بيانات النشر: | AAI, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | B-Lymphocytes, T-Lymphocytes, Molecular Sequence Data, CD2 Antigens, Mice, Transgenic, Protein Tyrosine Phosphatase, Non-Receptor Type 22, Chromosomes, Mammalian, Polymorphism, Single Nucleotide, Mice, Diabetes Mellitus, Type 1, Gene Expression Regulation, Genetic Loci, Mice, Inbred NOD, Immunogenetics, Animals, Humans, Genetic Predisposition to Disease, Alleles, Signal Transduction |
| الوصف: | By congenic strain mapping using autoimmune NOD.C57BL/6J congenic mice, we demonstrated previously that the type 1 diabetes (T1D) protection associated with the insulin-dependent diabetes (Idd)10 locus on chromosome 3, originally identified by linkage analysis, was in fact due to three closely linked Idd loci: Idd10, Idd18.1, and Idd18.3. In this study, we define two additional Idd loci--Idd18.2 and Idd18.4--within the boundaries of this cluster of disease-associated genes. Idd18.2 is 1.31 Mb and contains 18 genes, including Ptpn22, which encodes a phosphatase that negatively regulates T and B cell signaling. The human ortholog of Ptpn22, PTPN22, is associated with numerous autoimmune diseases, including T1D. We, therefore, assessed Ptpn22 as a candidate for Idd18.2; resequencing of the NOD Ptpn22 allele revealed 183 single nucleotide polymorphisms with the C57BL/6J (B6) allele--6 exonic and 177 intronic. Functional studies showed higher expression of full-length Ptpn22 RNA and protein, and decreased TCR signaling in congenic strains with B6-derived Idd18.2 susceptibility alleles. The 953-kb Idd18.4 locus contains eight genes, including the candidate Cd2. The CD2 pathway is associated with the human autoimmune disease, multiple sclerosis, and mice with NOD-derived susceptibility alleles at Idd18.4 have lower CD2 expression on B cells. Furthermore, we observed that susceptibility alleles at Idd18.2 can mask the protection provided by Idd10/Cd101 or Idd18.1/Vav3 and Idd18.3. In summary, we describe two new T1D loci, Idd18.2 and Idd18.4, candidate genes within each region, and demonstrate the complex nature of genetic interactions underlying the development of T1D in the NOD mouse model. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1550-6606 0022-1767 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::f1ce70e8dd4328b04d2c610dbd40194cTest http://europepmc.org/articles/PMC4635565Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.pmid.dedup....f1ce70e8dd4328b04d2c610dbd40194c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15506606 00221767 |
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