BAX is required for neuronal death after trophic factor deprivation and during development

Thomas L. Deckwerth, Jeffrey L. Elliott, C. Michael Knudson, Eugene M. Johnson, William D. Snider, Stanley J. Korsmeyer

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Abstract

Members of the BCL2-related family of proteins either promote or repress programmed cell death. BAX, a death-promoting member, heterodimerizes with multiple death-repressing molecules, suggesting that it could prove critical to cell death. We tested whether Bax is required for neuronal death by trophic factor deprivation and during development. Neonatal sympathetic neurons and facial motor neurons from Bax-deficient mice survived nerve growth factor deprivation and disconnection from their targets by axotomy, respectively. These salvaged neurons displayed remarkable soma atrophy and reduced elaboration of neurites; yet they responded to readdition of trophic factor with soma hypertrophy and enhanced neurite outgrowth. Bax-deficient superior cervical ganglia and facial nuclei possessed increased numbers of neurons. Our observations demonstrate that trophic factor deprivation- induced death of sympathetic and motor neurons depends on Bax.

Original languageEnglish (US)
Pages (from-to)401-411
Number of pages11
JournalNeuron
Volume17
Issue number3
DOIs
StatePublished - Sep 1996

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ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Deckwerth, T. L., Elliott, J. L., Knudson, C. M., Johnson, E. M., Snider, W. D., & Korsmeyer, S. J. (1996). BAX is required for neuronal death after trophic factor deprivation and during development. Neuron, 17(3), 401-411. https://doi.org/10.1016/S0896-6273(00)80173-7