Mutant small heat-shock protein 27 causes axonal Charcot-Marie-Tooth disease and distal hereditary motor neuropathy (original) (raw)

Nature Genetics volume 36, pages 602–606 (2004)Cite this article

Abstract

Charcot-Marie-Tooth disease (CMT) is the most common inherited neuromuscular disease and is characterized by considerable clinical and genetic heterogeneity1. We previously reported a Russian family with autosomal dominant axonal CMT and assigned the locus underlying the disease (CMT2F; OMIM 606595) to chromosome 7q11–q21 (ref. 2). Here we report a missense mutation in the gene encoding 27-kDa small heat-shock protein B1 (HSPB1, also called HSP27) that segregates in the family with CMT2F. Screening for mutations in HSPB1 in 301 individuals with CMT and 115 individuals with distal hereditary motor neuropathies (distal HMNs) confirmed the previously observed mutation and identified four additional missense mutations. We observed the additional HSPB1 mutations in four families with distal HMN and in one individual with CMT neuropathy. Four mutations are located in the Hsp20–α-crystallin domain, and one mutation is in the C-terminal part of the HSP27 protein. Neuronal cells transfected with mutated HSPB1 were less viable than cells expressing the wild-type protein. Cotransfection of neurofilament light chain (NEFL) and mutant HSPB1 resulted in altered neurofilament assembly in cells devoid of cytoplasmic intermediate filaments.

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Acknowledgements

We thank the affected individuals and their relatives for participating in this research project; A. Jacobs, E. De Vriendt, V. Van Gerwen, D. Kiraly and M. Jug for technical assistance; and A. Stavljenic-Rukavina for referring one of the families and for institutional support to Z.M.. This research project was supported in part by the Association Française contre les Myopathies, the Association Belge contre les Maladies Neuromusculaires, the Muscular Dystrophy Association, the US National Institutes of Health, Columbia University, the Concerted Research Actions of the Universities of Ghent, Leuven and Antwerp, the Fund for Scientific Research-Flanders, the Medical Foundation Queen Elisabeth, the Belgian Federal Science Policy Office, the Austrian Science Fund and the Styrian government. I.D. and N.V. are PhD students supported by the Institute for Science and Technology, Belgium.

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Authors and Affiliations

  1. Department of Psychiatry, New York State Psychiatric Institute/Research Foundation for Mental Hygiene, Unit 28, 1051 Riverside Drive, New York, 10032, New York, USA
    Oleg V Evgrafov
  2. DNA-Diagnostics Laboratory, Research Center For Medical Genetics, Moscow, Russia
    Irena Mersiyanova, Olga Schagina, Elena Dadali, Natalia Vasserman, Svetlana Tverskaya & Alexander Polyakov
  3. Department of Molecular Genetics, Flanders Interuniversity Institute for Biotechnology, University of Antwerp, Antwerpen, Belgium
    Joy Irobi, Ines Dierick, Nathalie Verpoorten, Peter De Jonghe & Vincent Timmerman
  4. Department of Experimental Neurology, Laboratory for Neurobiology, University of Leuven, Leuven, Belgium
    Ludo Van Den Bosch & Wim Robberecht
  5. Department of Pathology, Columbia University, College of Physicians and Surgeons, New York, USA
    Conrad L Leung & Ronald K H Liem
  6. Department of Medical Protein Research, Flanders Interuniversity Institute for Biotechnology, Ghent University, Ghent, Belgium
    Katrien Van Impe & Jan Gettemans
  7. Genetic Counseling Department, Diagnostic Center, Voronezh, Russia
    Valeriy Fedotov
  8. Institute of Medical Biology and Human Genetics, Medical University, Graz, Austria
    Michaela Auer-Grumbach, Christian Windpassinger & Klaus Wagner
  9. Department of Neurology, Centre for Neuromuscular Diseases, Clinical Hospital Centre Zagreb, University School of Medicine, Zagreb, Croatia
    Zoran Mitrovic
  10. Department of Clinical Neurology, Radcliffe Infirmary, Oxford, UK
    David Hilton-Jones
  11. Department of Human Anatomy and Genetics, University of Oxford, UK
    Kevin Talbot
  12. Born-Bunge Foundation, University of Antwerp, Antwerpen, Belgium
    Jean-Jacques Martin
  13. Division of Neurology, University Hospital Antwerpen, Antwerpen, Belgium
    Peter De Jonghe

Authors

  1. Oleg V Evgrafov
  2. Irena Mersiyanova
  3. Joy Irobi
  4. Ludo Van Den Bosch
  5. Ines Dierick
  6. Conrad L Leung
  7. Olga Schagina
  8. Nathalie Verpoorten
  9. Katrien Van Impe
  10. Valeriy Fedotov
  11. Elena Dadali
  12. Michaela Auer-Grumbach
  13. Christian Windpassinger
  14. Klaus Wagner
  15. Zoran Mitrovic
  16. David Hilton-Jones
  17. Kevin Talbot
  18. Jean-Jacques Martin
  19. Natalia Vasserman
  20. Svetlana Tverskaya
  21. Alexander Polyakov
  22. Ronald K H Liem
  23. Jan Gettemans
  24. Wim Robberecht
  25. Peter De Jonghe
  26. Vincent Timmerman

Corresponding author

Correspondence toOleg V Evgrafov.

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The authors declare no competing financial interests.

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Evgrafov, O., Mersiyanova, I., Irobi, J. et al. Mutant small heat-shock protein 27 causes axonal Charcot-Marie-Tooth disease and distal hereditary motor neuropathy.Nat Genet 36, 602–606 (2004). https://doi.org/10.1038/ng1354

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