Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Article
  • Published:

Minocycline inhibits caspase-1 and caspase-3 expression and delays mortality in a transgenic mouse model of Huntington disease


Huntington disease is an autosomal dominant neurodegenerative disease with no effective treatment. Minocycline is a tetracycline derivative with proven safety. After ischemia, minocycline inhibits caspase-1 and inducible nitric oxide synthetase upregulation, and reduces infarction. As caspase-1 and nitric oxide seem to play a role in Huntington disease, we evaluated the therapeutic efficacy of minocycline in the R6/2 mouse model of Huntington disease. We report that minocycline delays disease progression, inhibits caspase-1 and caspase-3 mRNA upregulation, and decreases inducible nitric oxide synthetase activity. In addition, effective pharmacotherapy in R6/2 mice requires caspase-1 and caspase-3 inhibition. This is the first demonstration of caspase-1 and caspase-3 transcriptional regulation in a Huntington disease model.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1: Progression of disease in R6/2 mice is inhibited by minocycline.
Figure 2: Minocycline inhibits caspase-1 activation as well as endogenous huntingtin cleavage in R6/2 mice.
Figure 3: Activation of iNOS in human and mouse HD.
Figure 4: Minocycline inhibits caspase-1 and caspase-3 expression.
Figure 5: Caspase-1 and caspase-3 inhibition are required to delay mortality of R6/2 mice.

Similar content being viewed by others


  1. The Huntington's Disease Collaborative Research Group. A novel gene containing a trinucleotide repeat that is expanded and unstable on Huntington's disease chromosomes. Cell 72, 971–983 (1993).

  2. Alnemri, E.S. et al. Human ICE/CED-3 protease nomenclature. Cell 87, 171 (1996).

    Article  CAS  Google Scholar 

  3. Friedlander, R.M. & Yuan, J. ICE, neuronal apoptosis and neurodegeneration. Cell Death Differ. 5, 823–831 (1998).

    Article  CAS  Google Scholar 

  4. Ona, V.O. et al. Inhibition of caspase-1 slows disease progression in a mouse model of Huntington's disease. Nature 399, 263–267 (1999).

    Article  CAS  Google Scholar 

  5. Goldberg, Y.P. et al. Cleavage of huntingtin by apopain, a proapoptotic cysteine protease, is modulated by the polyglutamine tract. Nature Genet. 13, 442–449 ( 1996).

    Article  CAS  Google Scholar 

  6. Wellington, C.L. et al. Caspase cleavage of gene products associated with triplet expansion disorders generates truncated fragments containing the polyglutamine tract. J. Biol. Chem. 273, 9158– 9167 (1998).

    Article  CAS  Google Scholar 

  7. Aronson, A.L. Pharmacotherapeutics of the newer tetracyclines. J. Am. Vet. Med. Assoc. 176, 1061–1068 ( 1980).

    CAS  PubMed  Google Scholar 

  8. Yrjanheikki, J., Keinanen, R., Pellikka, M., Hokfelt, T. & Koistinaho, J. Tetracyclines inhibit microglial activation and are neuroprotective in global brain ischemia. Proc. Natl. Acad. Sci. USA 95, 15769–15774 (1998).

    Article  CAS  Google Scholar 

  9. Yrjanheikki, J. et al. A tetracycline derivative, minocycline, reduces inflammation and protects against focal cerebral ischemia with a wide therapeutic window . Proc. Natl. Acad. Sci. USA 96, 13496– 13500 (1999).

    Article  CAS  Google Scholar 

  10. Tabrizi, S.J. et al. Mitochondrial dysfunction and free radical damage in the Huntington R6/2 transgenic mouse. Ann. Neurol. 47, 80–86 (2000).

    Article  CAS  Google Scholar 

  11. Tabrizi, S.J. et al. Biochemical abnormalities and excitotoxicity in Huntington's disease brain. Ann. Neurol. 45, 25– 32 (1999).

    Article  CAS  Google Scholar 

  12. Mangiarini, L. et al. Exon 1 of the HD gene with an expanded CAG repeat is sufficient to cause a progressive neurological phenotype in transgenic mice. Cell 87, 493–506 ( 1996).

    Article  CAS  Google Scholar 

  13. Davies, S.W. et al. Formation of neuronal intranuclear inclusions underlies the neurological dysfunction in mice transgenic for the HD mutation. Cell 90, 537–548 ( 1997).

    Article  CAS  Google Scholar 

  14. Cha, J.H. et al. Altered brain neurotransmitter receptors in transgenic mice expressing a portion of an abnormal human huntington disease gene. Proc. Natl. Acad. Sci. USA 95, 6480–6485 (1998).

    Article  CAS  Google Scholar 

  15. Li, P. et al. Mice deficient in IL-1 beta-converting enzyme are defective in production of mature IL-1 beta and resistant to endotoxic shock. Cell 80, 401–411 ( 1995).

    Article  CAS  Google Scholar 

  16. Kuida, K. et al. Altered cytokine export and apoptosis in mice deficient in interleukin-1 beta converting enzyme. Science 267, 2000 –2003 (1995).

    Article  CAS  Google Scholar 

  17. Friedlander, R.M. et al. Expression of a dominant negative mutant of interleukin-1 beta converting enzyme in transgenic mice prevents neuronal cell death induced by trophic factor withdrawal and ischemic brain injury. J. Exp. Med. 185, 933–940 ( 1997).

    Article  CAS  Google Scholar 

  18. Hara, H. et al. Inhibition of interleukin 1beta converting enzyme family proteases reduces ischemic and excitotoxic neuronal damage. Proc. Natl. Acad. Sci. USA 94, 2007–2012 ( 1997).

    Article  CAS  Google Scholar 

  19. White, J.K. et al. Huntingtin is required for neurogenesis and is not impaired by the Huntington's disease CAG expansion. Nature Genet. 17, 404–410 (1997).

    Article  CAS  Google Scholar 

  20. DiFiglia, M. et al. Aggregation of huntingtin in neuronal intranuclear inclusions and dystrophic neurites in brain. Science 277, 1990–1993 (1997).

    Article  CAS  Google Scholar 

  21. Forss-Petter, S. et al. Transgenic mice expressing beta-galactosidase in mature neurons under neuron-specific enolase promoter control. Neuron 5, 187–197 (1990).

    Article  CAS  Google Scholar 

  22. Enari, M., Talanian, R.V., Wong, W.W. & Nagata, S. Sequential activation of ICE-like and CPP32-like proteases during Fas-mediated apoptosis. Nature 380, 723– 736 (1996).

    Article  CAS  Google Scholar 

  23. Li, M. et al. Functional role of caspase-1 and caspase-3 in an ALS transgenic mouse model. Science 288, 335– 339 (2000).

    Article  CAS  Google Scholar 

  24. Browne, S.E. et al. Oxidative damage and metabolic dysfunction in Huntington's disease: selective vulnerability of the basal ganglia. Ann. Neurol. 41, 646–653 ( 1997).

    Article  CAS  Google Scholar 

  25. Schapira, A.H. Mitochondrial dysfunction in neurodegenerative disorders. Biochim. Biophys. Acta. 1366, 225–233 (1998).

    Article  CAS  Google Scholar 

  26. Tewari, M. et al. Yama/CPP32 beta, a mammalian homolog of CED-3, is a CrmA-inhibitable protease that cleaves the death substrate poly(ADP-ribose) polymerase. Cell 81, 801–809 ( 1995).

    Article  CAS  Google Scholar 

  27. Goulden, V., Glass, D. & Cunliffe, W.J. Safety of long-term high-dose minocycline in the treatment of acne. Br. J. Dermatol. 134, 693– 695 (1996).

    Article  CAS  Google Scholar 

  28. Gottlieb, A. Safety of minocycline for acne. Lancet 349, 374 (1997).

    Article  CAS  Google Scholar 

  29. Bredt, D.S. & Snyder, S.H. Isolation of nitric oxide synthetase, a calmodulin-requiring enzyme. Proc. Natl. Acad. Sci. USA 87, 682–685 (1990).

    Article  CAS  Google Scholar 

  30. Yoshida, T., Waeber, C., Huang, Z. & Moskowitz, M.A. Induction of nitric oxide synthase activity in rodent brain following middle cerebral artery occlusion. Neurosci. Lett. 194, 214 –218 (1995).

    Article  CAS  Google Scholar 

  31. Ferrante, R.J. et al. Heterogeneous topographic and cellular distribution of huntingtin expression in the normal human neostriatum. J. Neurosci. 17, 3052–3063 (1997).

    Article  CAS  Google Scholar 

Download references


The authors thank E. Friedlander for editorial assistance. This work was supported by a grant from the Hereditary Disease Foundation (to R.M.F. and J.H.J.C), the Huntington Disease Society of America (to R.M.F. and J.H.J.C), the National Institutes of Health (to R.M.F., J.H.J.C, R.J.F and S.M.H) and the Veterans Administration (R.J.F.). R.M.F. is a member of the Cure Huntington's Disease Initiative of the Hereditary Disease Foundation and of the Coalition for the Cure from the Huntington's Disease Society of America.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Robert M. Friedlander.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chen, M., Ona, V., Li, M. et al. Minocycline inhibits caspase-1 and caspase-3 expression and delays mortality in a transgenic mouse model of Huntington disease. Nat Med 6, 797–801 (2000).

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI:

This article is cited by


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing