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XB-ART-50363
Mol Med 2015 Feb 23;21:26-37. doi: 10.2119/molmed.2014.00219.
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A Coding Variant of ANO10, Affecting Volume Regulation of Macrophages, Is Associated with Borrelia Seropositivity.

Hammer C , Wanitchakool P , Sirianant L , Papiol S , Monnheimer M , Faria D , Ousingsawat J , Schramek N , Schmitt C , Margos G , Michel A , Kraiczy P , Pawlita M , Schreiber R , Schulz TF , Fingerle V , Tumani H , Ehrenreich H , Kunzelmann K .


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In a first genome-wide association study (GWAS) approach to anti-Borrelia seropositivity, we identified two significant single nucleotide polymorphisms (SNPs) (rs17850869, P = 4.17E-09; rs41289586, P = 7.18E-08). Both markers, located on chromosomes 16 and 3, respectively, are within or close to genes previously connected to spinocerebellar ataxia. The risk SNP rs41289586 represents a missense variant (R263H) of anoctamin 10 (ANO10), a member of a protein family encoding Cl(-) channels and phospholipid scramblases. ANO10 augments volume-regulated Cl(-) currents (IHypo) in Xenopus oocytes, HEK293 cells, lymphocytes and macrophages and controls volume regulation by enhancing regulatory volume decrease (RVD). ANO10 supports migration of macrophages and phagocytosis of spirochetes. The R263H variant is inhibitory on IHypo, RVD and intracellular Ca(2+) signals, which may delay spirochete clearance, thereby sensitizing adaptive immunity. Our data demonstrate for the first time that ANO10 has a central role in innate immune defense against Borrelia infection.

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Species referenced: Xenopus
Genes referenced: ano10

References [+] :
Abecasis, An integrated map of genetic variation from 1,092 human genomes. 2012, Pubmed