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| Content Provider | PubMed Central |
|---|---|
| Author | Linden, Jennifer R. Yinghua, Ma Zhao, Baohua Harris, Jason Michael Rashid, Rumah Kareem Nicole, Schaeren-wiemers Vartanian, Timothy |
| Copyright Year | 2015 |
| Abstract | Clostridium perfringens epsilon toxin (ε-toxin) is responsible for a devastating multifocal central nervous system (CNS) white matter disease in ruminant animals. The mechanism by which ε-toxin causes white matter damage is poorly understood. In this study, we sought to determine the molecular and cellular mechanisms by which ε-toxin causes pathological changes to white matter. In primary CNS cultures, ε-toxin binds to and kills oligodendrocytes but not astrocytes, microglia, or neurons. In cerebellar organotypic culture, ε-toxin induces demyelination, which occurs in a time- and dose-dependent manner, while preserving neurons, astrocytes, and microglia. ε-Toxin specificity for oligodendrocytes was confirmed using enriched glial culture. Sensitivity to ε-toxin is developmentally regulated, as only mature oligodendrocytes are susceptible to ε-toxin; oligodendrocyte progenitor cells are not. ε-Toxin sensitivity is also dependent on oligodendrocyte expression of the proteolipid myelin and lymphocyte protein (MAL), as MAL-deficient oligodendrocytes are insensitive to ε-toxin. In addition, ε-toxin binding to white matter follows the spatial and temporal pattern of MAL expression. A neutralizing antibody against ε-toxin inhibits oligodendrocyte death and demyelination. This study provides several novel insights into the action of ε-toxin in the CNS. (i) ε-Toxin causes selective oligodendrocyte death while preserving all other neural elements. (ii) ε-Toxin-mediated oligodendrocyte death is a cell autonomous effect. (iii) The effects of ε-toxin on the oligodendrocyte lineage are restricted to mature oligodendrocytes. (iv) Expression of the developmentally regulated proteolipid MAL is required for the cytotoxic effects. (v) The cytotoxic effects of ε-toxin can be abrogated by an ε-toxin neutralizing antibody. |
| Related Links | http://dx.doi.org/10.1128/mBio.02513-14 |
| Ending Page | 14 |
| Starting Page | 2513 |
| File Format | |
| ISSN | 21507511 |
| e-ISSN | 21507511 |
| Journal | mBio |
| Issue Number | 3 |
| Volume Number | 6 |
| Language | English |
| Publisher | American Society of Microbiology |
| Publisher Date | 2015-06-16 |
| Access Restriction | Open |
| Rights Holder | American Society of Microbiology |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Virology Microbiology |
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