Target-derived neurotrophic factors regulate the death of developing forebrain neurons after a change in their trophic requirements

R. Beau Lotto, Pundit Asavaritikrai, Leila Vali, David J. Price

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Many neurons die as the normal brain develops. How this is regulated and whether the mechanism involves neurotrophic molecules from target cells are unknown. We found that cultured neurons from a key forebrain structure, the dorsal thalamus, develop a need for survival factors including brain-derived neurotrophic factor (BDNF) from their major target, the cerebral cortex, at the age at which they innervate it. Experiments in vivo have shown that rates of dorsal thalamic cell death are reduced by increasing cortical levels of BDNF and are increased in mutant mice lacking functional BDNF receptors or thalamocortical projections; these experiments have also shown that an increase in the rates of dorsal thalamic cell death can be achieved by blocking BDNF in the cortex. We suggest that the onset of a requirement for cortex-derived neurotrophic factors initiates a competitive mechanism regulating programmed cell death among dorsal thalamic neurons.
LanguageEnglish
Pages3904-3910
Number of pages6
JournalJournal of Neuroscience
Volume21
Issue number11
Publication statusPublished - 2001

Fingerprint

Brain-Derived Neurotrophic Factor
Nerve Growth Factors
Prosencephalon
Cell Death
Neurons
trkB Receptor
Thalamus
Cerebral Cortex
Brain

Keywords

  • brain-derived neurotrophic factor
  • cerebral cortex
  • programmed cell death
  • small eye mice
  • thalamus
  • Trk receptors

Cite this

Beau Lotto, R. ; Asavaritikrai, Pundit ; Vali, Leila ; Price, David J. / Target-derived neurotrophic factors regulate the death of developing forebrain neurons after a change in their trophic requirements. In: Journal of Neuroscience. 2001 ; Vol. 21, No. 11. pp. 3904-3910.
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Target-derived neurotrophic factors regulate the death of developing forebrain neurons after a change in their trophic requirements. / Beau Lotto, R.; Asavaritikrai, Pundit; Vali, Leila; Price, David J.

In: Journal of Neuroscience, Vol. 21, No. 11, 2001, p. 3904-3910.

Research output: Contribution to journalArticle

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AU - Asavaritikrai, Pundit

AU - Vali, Leila

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AB - Many neurons die as the normal brain develops. How this is regulated and whether the mechanism involves neurotrophic molecules from target cells are unknown. We found that cultured neurons from a key forebrain structure, the dorsal thalamus, develop a need for survival factors including brain-derived neurotrophic factor (BDNF) from their major target, the cerebral cortex, at the age at which they innervate it. Experiments in vivo have shown that rates of dorsal thalamic cell death are reduced by increasing cortical levels of BDNF and are increased in mutant mice lacking functional BDNF receptors or thalamocortical projections; these experiments have also shown that an increase in the rates of dorsal thalamic cell death can be achieved by blocking BDNF in the cortex. We suggest that the onset of a requirement for cortex-derived neurotrophic factors initiates a competitive mechanism regulating programmed cell death among dorsal thalamic neurons.

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KW - small eye mice

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