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PMID:7472523

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Citation

Sagot, Y, Dubois-Dauphin, M, Tan, SA, de Bilbao, F, Aebischer, P, Martinou, JC and Kato, AC (1995) Bcl-2 overexpression prevents motoneuron cell body loss but not axonal degeneration in a mouse model of a neurodegenerative disease. J. Neurosci. 15:7727-33

Abstract

Bcl-2 and its analogs protect different classes of neurons from apoptosis in several experimental situations. These proteins may therefore provide a means for treatment of neurodegenerative diseases. We examined the effects of Bcl-2 overexpression in a genetic mouse model with motor neuron disease (progressive motor neuronopathy/pmn). Pmn/pmn mice lose motoneurons and myelinated axons, and die at 6 weeks of age. When these mice were crossed with transgenic mice that overexpress human Bcl-2, there was a rescue of the facial motoneurons with a concomitant restoration of their normal soma size and expression of choline acetyltransferase. However, Bcl-2 overexpression did not prevent degeneration of myelinated axons in the facial and phrenic motor nerves and it did not increase the life span of the animals. Since Bcl-2 acts strictly on neuronal cell body survival without compensating for nerve degeneration in pmn/pmn/bcl-2 mice, this proto-oncogene would not in itself be sufficient for treatment of neurodegenerative diseases where axonal impairment is a major component.

Links

PubMed

Keywords

Animals; Axons/physiology; Cell Death; Facial Nerve/pathology; Humans; Immunohistochemistry; Mice; Mice, Transgenic; Motor Neuron Disease/metabolism; Motor Neuron Disease/pathology; Motor Neurons/pathology; Nerve Degeneration; Phrenic Nerve/pathology; Pons/pathology; Proto-Oncogene Proteins/genetics; Proto-Oncogene Proteins/metabolism; Proto-Oncogene Proteins c-bcl-2

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


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References

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