Transgenic mice expressing the intracellular domain of the p75 neurotrophin receptor undergo neuronal apoptosis

Marta Majdan, Christian Lachance, Andrew Gloster, Raquel Aloyz, Christine Zeindler, Shernaz Bamji, Asha Bhakar, Daniel Belliveau, James Fawcett, Freda D. Miller, Philip A. Barker

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184 Citas (Scopus)

Resumen

We have asked whether p75(NTR) may play a role in neuronal apoptosis by producing transgenic mice that express the p75(NTR) intracellular domain within peripheral and central neurons. These animals showed profound reductions in numbers of sympathetic and peripheral sensory neurons as well as cell loss in the neocortex, where there is normally little or no p75(NTR) expression. Developmental loss of facial motor neurons was not observed, but induced expression of the p75(NTR) intracellular domain within adult animals led to increased motor neuron death after axotomy. Biochemical analyses suggest that these effects were not attributable to a p75(NTR)-dependent reduction in trk activation but instead indicate that the p75(NTR) intracellular domain may act as a constitutive activator of signaling cascades that regulate apoptosis in both peripheral and central neurons.

Idioma originalEnglish
Páginas (desde-hasta)6988-6998
Número de páginas11
PublicaciónJournal of Neuroscience
Volumen17
N.º18
DOI
EstadoPublished - 1997
Publicado de forma externa

ASJC Scopus Subject Areas

  • General Neuroscience

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