Role of caspase-1 subfamily in cytotoxic cytokine-induced oligodendrocyte cell death

S. Hisahara, R. Takano, S. Shoji, Hideyuki Okano, M. Miura

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Oligodendrocytes are myelin forming cells in mammalian central nervous system. About 50% of oligodendrocytes (OLGs) undergo cell death in normal development. In addition, OLG cell deaths have been observed in demyelinating diseases including multiple sclerosis (MS). Clinical observations and in vitro cell culture studies have suggested that cytokines mediate OLG cell damage in multiple sclerosis (MS). Among the cytokines, tumor necrosis factor (TNF) is thought to be one of the mediators responsible for the damage of OLGs in MS. The administration of TNF-α to primary cultures of OLGs induced DNA fragmentation, and significantly decreased the number of live OLGs. Chemical inhibitors Ac-YVAD-CHO (a specific inhibitor of caspase-1 (ICE)-like proteases) enhanced the survival of TNF-α treated OLGs better than Ac-DEVD-CHO (a specific inhibitor of caspase-3 (CPP32)-like proteases). These results indicate that caspase-1-mediated cell-death pathway are activated in TNF-induced OLG cell death. Caspase-11 is involved in activation of caspase-1. Oligodendrocytes from caspase-11-deficient mice are partially resistant to TNF-induced OLG cell death. Our results suggest that the inhibition of caspase-1 sufamily may be a novel therapeutic approach to treat MS.

Original languageEnglish
Pages (from-to)135-142
Number of pages8
JournalJournal of Neural Transmission, Supplement
Issue number58
Publication statusPublished - 2000
Externally publishedYes

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Caspase 1
Oligodendroglia
Cell Death
Cytokines
Tumor Necrosis Factor-alpha
Multiple Sclerosis
Peptide Hydrolases
Demyelinating Diseases
DNA Fragmentation
Myelin Sheath
Caspases
Caspase 3
Central Nervous System
Cell Culture Techniques

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Role of caspase-1 subfamily in cytotoxic cytokine-induced oligodendrocyte cell death. / Hisahara, S.; Takano, R.; Shoji, S.; Okano, Hideyuki; Miura, M.

In: Journal of Neural Transmission, Supplement, No. 58, 2000, p. 135-142.

Research output: Contribution to journalArticle

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AU - Shoji, S.

AU - Okano, Hideyuki

AU - Miura, M.

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