The rs5743836 polymorphism in TLR9 confers a population-based increased risk of non-Hodgkin lymphoma.

The rs5743836 polymorphism in TLR9 confers a population-based increased risk of non-Hodgkin lymphoma.
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DOI:
10.1038/gene.2011.59
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发表时间:
2012-02
期刊:
影响因子:
5
通讯作者:
Rodrigues, F.
Rodrigues, F.
中科院分区:
医学3区
文献类型:
--
作者:
Carvalho, A.;Cunha, C.;Almeida, A. J.;Osorio, N. S.;Saraiva, M.;Teixeira-Coelho, M.;Pedreiro, S.;Torrado, E.;Domingues, N.;Gomes-Alves, A. G.;Marques, A.;Lacerda, J. F.;da Silva, M. G.;Gomes, M.;Pinto, A. C.;Torres, F.;Rendeiro, P.;Tavares, P.;Di Ianni, M.;Medeiros, R.;Heutink, P.;Bracci, P. M.;Conde, L.;Ludovico, P.;Pedrosa, J.;Maciel, P.;Pitzurra, L.;Aversa, F.;Marques, H.;Paiva, A.;Skibola, C. F.;Romani, L.;Castro, A. G.;Rodrigues, F.

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非霍奇金淋巴瘤 (NHL) 与免疫缺陷、慢性炎症和自身免疫性疾病有关。鉴于免疫功能障碍与 NHL 之间的联系,Toll 样受体 (TLR) 的遗传变异被认为是 NHL 易感性的潜在预测因素。已知足够的抗肿瘤反应取决于 TLR9 功能,因此其合成配体的使用被作为一种治疗策略。我们在来自葡萄牙(1160 名对照,797 名患者)、意大利(468 名对照,494 名患者)和美国(972 名对照,868 名患者)的三项独立病例对照关联研究中,研究了 TLR9 启动子中的功能性 rs5743836 多态性与 B 细胞 NHL 及其主要亚型风险之间的关联。我们发现 rs5743836 多态性在葡萄牙语(比值比 (OR),1.85;P = 7.3E–9)和意大利语(OR,1.84;P = 6.0E–5)中显着过度传播,但在美国 NHL 患者队列中没有。此外,携带rs5743836的患者的单核细胞中TLR9转录活性的增加进一步支持了这种多态性以群体依赖性方式对NHL易感性的功能影响。
Non-Hodgkin lymphoma (NHL) has been associated with immunological defects, chronic inflammatory and autoimmune conditions. Given the link between immune dysfunction and NHL, genetic variants in toll-like receptors (TLRs) have been regarded as potential predictive factors of susceptibility to NHL. Adequate anti-tumoral responses are known to depend on TLR9 function, such that the use of its synthetic ligand is being targeted as a therapeutic strategy. We investigated the association between the functional rs5743836 polymorphism in the TLR9 promoter and risk for B-cell NHL and its major subtypes in three independent case–control association studies from Portugal (1160 controls, 797 patients), Italy (468 controls, 494 patients) and the US (972 controls, 868 patients). We found that the rs5743836 polymorphism was significantly overtransmitted in both Portuguese (odds ratio (OR), 1.85; P = 7.3E–9) and Italian (OR, 1.84; P = 6.0E–5) and not in the US cohort of NHL patients. Moreover, the increased transcriptional activity of TLR9 in mononuclear cells from patients harboring rs5743836 further supports a functional effect of this polymorphism on NHL susceptibility in a population-dependent manner.
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