About: BACKGROUND: The dendritic cell-specific intercellular adhesion molecule 3 grabbing non-integrin (DC-SIGN) is an important pathogen recognition receptor of the innate immune system. DC-SIGN promoter variants play important role in the susceptibility to various infectious diseases. Nasopharyngeal carcinoma (NPC) is a malignancy that is common in southern China and whether DC-SIGN promoter variants have effects on susceptibility to NPC is still unknown. The aim of this study is to ascertain the potential involvement of DC-SIGN promoter single nucleotide polymorphisms (SNPs) in NPC susceptibility. METHODS: We conducted a case control study based on Cantonese population including 444 NPC patients and 464 controls matched on age and sex. The 1041 bp of DC-SIGN promoter region was directly sequenced for all samples. Sequence alignment and SNP search were inspected using DNAStar analysis programs and haplotype frequencies were estimated in Haploview V 4.0. The associations between the SNPs and the risk of NPC were analyzed using chi-square test and non-conditional logistic regression analysis with SPSS 13.0 software. RESULTS: A total of six variants were observed in the DC-SIGN promoter region and DC-SIGN -139 GG and -939 AA were significantly associated with NPC risk with adjusted Odds Ratios (ORs) of 2.10 (95% confidence interval [CI] = 1.23-3.59; P = 0.006) and 2.52 (1.29-4.93; P = 0.007) respectively and subjects carrying the risk allele DC-SIGN -871 G had 1.47-fold (95% CI = 1.14-1.90) increased risks of developing NPC (P = 0.003). Haplotype analysis revealed that h1 'AAAG' was significantly associated with protection against NPC (OR = 0.69; P = 0.0002) and the association was still significant when using 1000 permutation test runs (P = 0.001). CONCLUSIONS: Our study indicated that DC-SIGN promoter variants appear to be involved in the susceptibility to NPC and the detailed mechanism of this effect need further studies.   Goto Sponge  NotDistinct  Permalink

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  • BACKGROUND: The dendritic cell-specific intercellular adhesion molecule 3 grabbing non-integrin (DC-SIGN) is an important pathogen recognition receptor of the innate immune system. DC-SIGN promoter variants play important role in the susceptibility to various infectious diseases. Nasopharyngeal carcinoma (NPC) is a malignancy that is common in southern China and whether DC-SIGN promoter variants have effects on susceptibility to NPC is still unknown. The aim of this study is to ascertain the potential involvement of DC-SIGN promoter single nucleotide polymorphisms (SNPs) in NPC susceptibility. METHODS: We conducted a case control study based on Cantonese population including 444 NPC patients and 464 controls matched on age and sex. The 1041 bp of DC-SIGN promoter region was directly sequenced for all samples. Sequence alignment and SNP search were inspected using DNAStar analysis programs and haplotype frequencies were estimated in Haploview V 4.0. The associations between the SNPs and the risk of NPC were analyzed using chi-square test and non-conditional logistic regression analysis with SPSS 13.0 software. RESULTS: A total of six variants were observed in the DC-SIGN promoter region and DC-SIGN -139 GG and -939 AA were significantly associated with NPC risk with adjusted Odds Ratios (ORs) of 2.10 (95% confidence interval [CI] = 1.23-3.59; P = 0.006) and 2.52 (1.29-4.93; P = 0.007) respectively and subjects carrying the risk allele DC-SIGN -871 G had 1.47-fold (95% CI = 1.14-1.90) increased risks of developing NPC (P = 0.003). Haplotype analysis revealed that h1 'AAAG' was significantly associated with protection against NPC (OR = 0.69; P = 0.0002) and the association was still significant when using 1000 permutation test runs (P = 0.001). CONCLUSIONS: Our study indicated that DC-SIGN promoter variants appear to be involved in the susceptibility to NPC and the detailed mechanism of this effect need further studies.
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  • C-type lectins
  • Transmembrane proteins
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