Molecular Medicine

, Volume 21, Issue 1, pp 26–37 | Cite as

A Coding Variant of ANO10, Affecting Volume Regulation of Macrophages, Is Associated with Borrelia Seropositivity

  • Christian Hammer
  • Podchanart Wanitchakool
  • Lalida Sirianant
  • Sergi Papiol
  • Mathieu Monnheimer
  • Diana Faria
  • Jiraporn Ousingsawat
  • Natalie Schramek
  • Corinna Schmitt
  • Gabriele Margos
  • Angelika Michel
  • Peter Kraiczy
  • Michael Pawlita
  • Rainer Schreiber
  • Thomas F. Schulz
  • Volker Fingerle
  • Hayrettin Tumani
  • Hannelore Ehrenreich
  • Karl Kunzelmann
Research Article


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 Ca2+ 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.



This work was supported by the Max Planck Society and the Max Planck Förderstiftung, as well as by the DFGSFB699A12, DFG KU756/12-1, Volkswagenstiftung AZ 87499 and the Niedersachsen-Research Network on Neuroinfectiology (N-RENNT) of the Ministry of Science and Culture of Lower Saxony. This work was also supported by a Young Investigator Grant from the Brain & Behavior Research Foundation, as well as a postdoctoral scholarship from the Daimler and Benz Foundation, both awarded to C Hammer.

Supplementary material

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Authors and Affiliations

  • Christian Hammer
    • 1
  • Podchanart Wanitchakool
    • 2
  • Lalida Sirianant
    • 2
  • Sergi Papiol
    • 1
  • Mathieu Monnheimer
    • 1
  • Diana Faria
    • 2
  • Jiraporn Ousingsawat
    • 2
  • Natalie Schramek
    • 3
  • Corinna Schmitt
    • 4
  • Gabriele Margos
    • 5
  • Angelika Michel
    • 6
  • Peter Kraiczy
    • 7
  • Michael Pawlita
    • 6
  • Rainer Schreiber
    • 2
  • Thomas F. Schulz
    • 4
  • Volker Fingerle
    • 5
  • Hayrettin Tumani
    • 3
  • Hannelore Ehrenreich
    • 1
    • 8
  • Karl Kunzelmann
    • 2
  1. 1.Clinical NeuroscienceMax Planck Institute of Experimental MedicineGöttingenGermany
  2. 2.Institut für Physiologie, Department of PhysiologyUniversität RegensburgRegensburgGermany
  3. 3.Department of NeurologyUniversity of UlmUlmGermany
  4. 4.Hannover Medical SchoolInstitute of VirologyHannoverGermany
  5. 5.Bavarian Health and Food Safety AuthorityNational Reference Center for BorreliaMunichGermany
  6. 6.Division of Genome Modifications and Carcinogenesis, Infections and Cancer ProgramGerman Cancer Research CenterHeidelbergGermany
  7. 7.Institute of Medical Microbiology and Infection ControlUniversity Hospital of Frankfurt am MainFrankfurt/MainGermany
  8. 8.DFG Research Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB)GöttingenGermany

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