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CD209 (DC-SIGN) -336A>G promoter polymorphism and severe acute respiratory syndrome in Hong Kong Chinese.

Identifieur interne : 002574 ( Main/Exploration ); précédent : 002573; suivant : 002575

CD209 (DC-SIGN) -336A>G promoter polymorphism and severe acute respiratory syndrome in Hong Kong Chinese.

Auteurs : Kelvin Yuen Kwong Chan [République populaire de Chine] ; Mei-Shu Xu ; Johannes Chi Yun Ching ; Thomas Man Kit So ; Sik-To Lai ; Chung-Ming Chu ; Loretta Y C. Yam ; Andrew T Y. Wong ; Pui Hong Chung ; Vera Sau Fong Chan ; Chen Lung Steve Lin ; Pak Chung Sham ; Gabriel M. Leung ; Joseph S M. Peiris ; Ui-Soon Khoo

Source :

RBID : pubmed:20359516

Descripteurs français

English descriptors

Abstract

CD209 (DC-SIGN) is an important C-type lectin which acts a receptor of many pathogens. The single nucleotide polymorphism (SNP) -336A>G in the CD209 promoter has been demonstrated to regulate promoter activity and to be associated with several important infectious diseases, such as human immunodeficiency virus-1 (HIV-1), Mycobacterium tuberculosis, and Dengue fever. CD209 facilitates severe acute respiratory syndrome (SARS)-coronavirus spike protein-bearing pseudotype driven infection of permissive cells in vitro. In keeping with previously published findings, our in vitro studies confirmed that this SNP modulates gene promoter activity. Genetic association analysis of this SNP with clinico-pathologic outcomes in 824 serologic confirmed SARS patients showed that the -336AG/GG genotype SARS patients was associated with lower standardized lactate-dehydrogenase (LDH) levels compared with the -336AA patients (p = 0.014, odds ratio = 0.40). High LDH levels are known to be an independent predictor for poor clinical outcome, probably related to tissue destruction from immune hyperactivity. Hence, SARS patients with the CD209 -336 AA genotype carry a 60% chance of having a poorer prognosis. This association is in keeping with the role of CD209 in modulating immune response to viral infection. The relevance of these findings for other infectious diseases and inflammatory conditions would be worth investigating.

DOI: 10.1016/j.humimm.2010.03.006
PubMed: 20359516


Affiliations:


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Le document en format XML

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<term>Adult</term>
<term>Antigens, CD (genetics)</term>
<term>Asian Continental Ancestry Group (genetics)</term>
<term>Cell Adhesion Molecules (genetics)</term>
<term>Cell Adhesion Molecules (metabolism)</term>
<term>DNA (metabolism)</term>
<term>DNA Probes (genetics)</term>
<term>Electrophoretic Mobility Shift Assay</term>
<term>Female</term>
<term>Gene Frequency (genetics)</term>
<term>Genotype</term>
<term>HeLa Cells</term>
<term>Heterozygote</term>
<term>Homozygote</term>
<term>Hong Kong</term>
<term>Humans</term>
<term>L-Lactate Dehydrogenase (blood)</term>
<term>Lectins, C-Type (genetics)</term>
<term>Lectins, C-Type (metabolism)</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Nuclear Proteins (metabolism)</term>
<term>Polymorphism, Single Nucleotide (genetics)</term>
<term>Promoter Regions, Genetic (genetics)</term>
<term>Protein Binding (genetics)</term>
<term>Receptors, Cell Surface (genetics)</term>
<term>Receptors, Cell Surface (metabolism)</term>
<term>Severe Acute Respiratory Syndrome (blood)</term>
<term>Severe Acute Respiratory Syndrome (genetics)</term>
<term>Sp1 Transcription Factor (genetics)</term>
<term>Transcription Factor AP-2 (genetics)</term>
<term>Transfection</term>
</keywords>
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<term>Adulte</term>
<term>Adulte d'âge moyen</term>
<term>Antigènes CD (génétique)</term>
<term>Cellules HeLa</term>
<term>Facteur de transcription AP-2 (génétique)</term>
<term>Facteur de transcription Sp1 (génétique)</term>
<term>Femelle</term>
<term>Fréquence d'allèle (génétique)</term>
<term>Génotype</term>
<term>Homozygote</term>
<term>Hong Kong</term>
<term>Humains</term>
<term>Hétérozygote</term>
<term>L-Lactate dehydrogenase (sang)</term>
<term>Lectines de type C (génétique)</term>
<term>Lectines de type C (métabolisme)</term>
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<term>Molécules d'adhérence cellulaire (métabolisme)</term>
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<term>Polymorphisme de nucléotide simple (génétique)</term>
<term>Population d'origine asiatique (génétique)</term>
<term>Protéines nucléaires (métabolisme)</term>
<term>Récepteurs de surface cellulaire (génétique)</term>
<term>Récepteurs de surface cellulaire (métabolisme)</term>
<term>Régions promotrices (génétique) (génétique)</term>
<term>Sondes d'ADN (génétique)</term>
<term>Syndrome respiratoire aigu sévère (génétique)</term>
<term>Syndrome respiratoire aigu sévère (sang)</term>
<term>Test de retard de migration électrophorétique</term>
<term>Transfection</term>
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<term>L-Lactate Dehydrogenase</term>
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<term>Antigens, CD</term>
<term>Cell Adhesion Molecules</term>
<term>DNA Probes</term>
<term>Lectins, C-Type</term>
<term>Receptors, Cell Surface</term>
<term>Sp1 Transcription Factor</term>
<term>Transcription Factor AP-2</term>
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<term>Gene Frequency</term>
<term>Polymorphism, Single Nucleotide</term>
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<term>Protein Binding</term>
<term>Severe Acute Respiratory Syndrome</term>
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<term>Liaison aux protéines</term>
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<term>Protéines nucléaires</term>
<term>Récepteurs de surface cellulaire</term>
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<term>Adult</term>
<term>Electrophoretic Mobility Shift Assay</term>
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<term>Genotype</term>
<term>HeLa Cells</term>
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<term>Humans</term>
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<term>Transfection</term>
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<term>Génotype</term>
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<term>Hong Kong</term>
<term>Humains</term>
<term>Hétérozygote</term>
<term>Mâle</term>
<term>Test de retard de migration électrophorétique</term>
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<front>
<div type="abstract" xml:lang="en">CD209 (DC-SIGN) is an important C-type lectin which acts a receptor of many pathogens. The single nucleotide polymorphism (SNP) -336A>G in the CD209 promoter has been demonstrated to regulate promoter activity and to be associated with several important infectious diseases, such as human immunodeficiency virus-1 (HIV-1), Mycobacterium tuberculosis, and Dengue fever. CD209 facilitates severe acute respiratory syndrome (SARS)-coronavirus spike protein-bearing pseudotype driven infection of permissive cells in vitro. In keeping with previously published findings, our in vitro studies confirmed that this SNP modulates gene promoter activity. Genetic association analysis of this SNP with clinico-pathologic outcomes in 824 serologic confirmed SARS patients showed that the -336AG/GG genotype SARS patients was associated with lower standardized lactate-dehydrogenase (LDH) levels compared with the -336AA patients (p = 0.014, odds ratio = 0.40). High LDH levels are known to be an independent predictor for poor clinical outcome, probably related to tissue destruction from immune hyperactivity. Hence, SARS patients with the CD209 -336 AA genotype carry a 60% chance of having a poorer prognosis. This association is in keeping with the role of CD209 in modulating immune response to viral infection. The relevance of these findings for other infectious diseases and inflammatory conditions would be worth investigating.</div>
</front>
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