Genetic Dissection Reveals Diabetes Loci Proximal to the Gimap5 Lymphopenia Gene.
Authors:
Fuller, JM Bogdani, M Tupling, TD Jensen, RA Pefley, R Manavi, S Cort, L Blankenhorn, EP Mordes, JP Lernmark, A Kwitek, AE
Citation:
Fuller JM, etal., Physiol Genomics. 2009 Apr 7.
RGD ID:
2306526
Pubmed:
PMID:19351909 (View Abstract at PubMed)
PMCID:
PMC2696149 (View Article at PubMed Central)
DOI:
DOI:10.1152/physiolgenomics.00015.2009 (Journal Full-text)
Congenic DRF.(f/f) rats are protected from type 1 diabetes (T1D) by 34 Mb of F344 DNA introgressed proximal to the Gimap5 lymphopenia gene. To dissect the genetic factor(s) that confer protection from T1D in the DRF.(f/f) rat line, DRF.(f/f) rats were crossed to inbred BBDR or DR.(lyp/lyp) rats to generate congenic sublines that were genotyped, monitored for T1D and positional candidate genes sequenced. All (100%) DR.(lyp/lyp) rats developed T1D by 83 days of age. Reduction of the DRF.(f/f) F344 DNA fragment by 26 Mb (42.52 Mb-68.51 Mb) retained complete T1D protection. Further dissection revealed that a 2 Mb interval of F344 DNA (67.41-70.17 Mb) (Region 1) resulted in 47% protection and significantly delayed onset (p<0.001 compared to DR.(lyp/lyp)). Retaining <1 Mb of F344 DNA at the distal end (76.49-76.83 Mb) (Region 2) resulted in 28% protection and also delayed onset (p<0.001 compared to DR.(lyp/lyp)). Comparative analysis of diabetes frequency in the DRF.(f/f) congenic sublines further refined the RNO4 Region 1 interval to approximately 670 Kb and Region 2 to the 340 Kb proximal to Gimap5. All congenic DRF.(f/f) sublines were prone to low-grade pancreatic mononuclear cell infiltration around ducts and vessels but less than 20% of islets in non-diabetic rats showed islet infiltration. Coding sequence analysis revealed TCR Vbeta 8E, 12 and 13 as candidate genes in Region 1 and Znf467 and Atp6v0e2 as candidate genes in Region 2. Our results show that spontaneous T1D is controlled by at least two genetic loci 7 Mb apart on rat chromosome 4. Key words: Type 1 diabetes, BB rat, T cell receptor, autoimmune.
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BBDR.BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat lymphopenia IAGP compared to BBDR/Rhw RGD BBDR.F344-(D4Arb11-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat lymphopenia IAGP compared to BBDR.F344-(D4Rat153-D4Rhw8) and BBDP-(D4Rhw6-D4Rat62)/Rhw RGD BBDR.F344-(D4Got33-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Got59-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat102-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat lymphopenia IAGP compared to BBDR.F344-(D4Rat153-D4Rhw8) and BBDP-(D4Rhw6-D4Rat62)/Rhw RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/1Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/2Rhw Rat lymphopenia IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/3Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat153-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat lymphopenia IAGP compared to BBDR.F344-(D4Rat153-D4Rhw8) and BBDP-(D4Rhw6-D4Rat62)/Rhw RGD BBDR.F344-(D4Rat153-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat253-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat lymphopenia IAGP compared to BBDR.F344-(D4Rat153-D4Rhw8) and BBDP-(D4Rhw6-D4Rat62)/Rhw RGD BBDR.F344-(D4Rat253-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat26-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat lymphopenia IAGP RGD BBDR.F344-(D4Rat27-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat lymphopenia IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDP/Rhw Rat type 1 diabetes mellitus MODEL: spontaneous IAGP RGD BBDR.BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat type 1 diabetes mellitus susceptibility IAGP compared to BBDR/Rhw RGD BBDR.F344-(D4Arb11-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Got59-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat102-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/3Rhw Rat type 1 diabetes mellitus susceptibility IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat153-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat253-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat26-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD BBDR.F344-(D4Rat27-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat type 1 diabetes mellitus penetrance IAGP compared to BBDR.BBDP-(D4Rhw11-D4Rhw10)/Rhw RGD Iddm38 Rat type 1 diabetes mellitus resistance IDA RGD Iddm39 Rat type 1 diabetes mellitus resistance IDA RGD
Mammalian Phenotype
BBDR.F344-(D4Rat253-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased lymphocyte cell number IAGP RGD BBDR.F344-(D4Arb11-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Got33-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP RGD BBDR.F344-(D4Got59-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP as compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat102-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP as compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/1Rhw Rat decreased susceptibility to autoimmune diabetes IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/2Rhw Rat decreased susceptibility to autoimmune diabetes IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/3Rhw Rat decreased susceptibility to autoimmune diabetes IAGP as compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat153-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP as compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat153-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat253-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP as compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat253-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP RGD BBDR.F344-(D4Rat26-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP RGD BBDR.F344-(D4Rat27-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP as compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR/Rhw Rat decreased susceptibility to autoimmune diabetes IAGP compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD Iddm38 Rat decreased susceptibility to autoimmune diabetes IDA RGD Iddm39 Rat decreased susceptibility to autoimmune diabetes IDA RGD BBDR.BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased T cell number IAGP compared to BBDR/Rhw RGD BBDR.F344-(D4Arb11-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Got33-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Got59-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat102-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/1Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/2Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/3Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat153-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat153-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased T cell number IAGP compared to BBDR.BBDP-D4Rhw11-D4Rhw10/Rhw RGD BBDR.F344-(D4Rat253-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat26-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased T cell number IAGP RGD BBDR.F344-(D4Rat27-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat decreased T cell number IAGP RGD BBDR.BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat increased susceptibility to autoimmune diabetes IAGP compared to BBDR/Rhw RGD BBDR.BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat insulitis susceptibility IAGP RGD Iddm38 Rat insulitis resistance IDA RGD Iddm39 Rat insulitis resistance IDA RGD BBDR.BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Arb11-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Got33-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Got59-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat102-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/1Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/2Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat102-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/3Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat153-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat153-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat253-D4Rat27 ),BBDP-(D4Rhw11-D4Rhw10 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat253-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat26-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Rat27-D4Rhw8 ),BBDP-(D4Rhw6-D4Rat62 )/Rhw Rat periinsulitis susceptibility IAGP RGD BBDR.F344-(D4Mgh24-D4Rhw6),BBDP-(D4Rhw6-D4Rhw10)/Rhw Rat periinsulitis susceptibility IAGP RGD