Genetic variants of RANTES are associated with serum RANTES level and protection for type 1 diabetes.
RANTES (regulated on activation, normal T-cell expressed and secreted) is a T-helper type 1 (Th1) chemokine that promotes T-cell activation and proliferation. RANTES is genetically associated with asthma, sarcoidosis and multiple sclerosis. The concentration of RANTES is increased at inflammation sites in different autoimmune diseases. Type 1 diabetes (T1D) is a Th1-mediated disease with complex genetic predisposition. We tested RANTES as a candidate gene for association with T1D using three single-nucleotide polymorphism (SNP) variants (rs4251719, rs2306630 and rs2107538) to capture haplotype information. The minor alleles of all SNPs were transmitted less frequently to T1D offspring (transmission rates 37.3% (P=0.002), 38.7% (P=0.007) and 41.0% (P=0.01)) and were less frequently present in patients compared to controls (P=0.009, 0.03 and 0.04, respectively). A similar protective effect was observed for the haplotype carrying three minor alleles (transmission disequilibrium test (TDT): P=0.003; odds ratio (OR)=0.55; confidence interval (CI): 0.37-0.83; case/control: P=0.03; OR=0.74; CI: 0.55-0.98). Both patients and controls carrying the protective haplotype express significantly lower serum levels of RANTES compared to non-carriers. Subsequently, we tested a cohort of 310 celiac disease patients, but failed to detect association. RANTES SNPs are significantly associated with RANTES serum concentration and development of T1D. The rs4251719*A-rs2306630*A-rs2107538*A haplotype associated with low RANTES production confers protection from T1D. Our data imply that RANTES is associated with T1D both genetically and functionally, and contributes to diabetes-prone Th1 cytokine profile.
Zhernakova
A
A
Department of Medical Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands.
Alizadeh
B Z
BZ
Eerligh
P
P
Hanifi-Moghaddam
P
P
Schloot
N C
NC
Diosdado
B
B
Wijmenga
C
C
Roep
B O
BO
Koeleman
B P C
BP
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D016022:Case-Control Studies; D002446:Celiac Disease / Q000235:genetics / Q000276:immunology; D018946:Chemokine CCL5 / Q000097:blood* / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D003922:Diabetes Mellitus, Type 1 / Q000235:genetics* / Q000276:immunology*; D005260:Female; D005787:Gene Frequency; D014644:Genetic Variation; D006239:Haplotypes; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide
D018946:Chemokine CCL5