Glial cell line-derived neurotrophic factor is essential for postnatal survival of midbrain dopamine neurons

Ann Charlotte Granholm, Mary Reyland, David Albeck, Linda Sanders, Greg Gerhardt, George Hoernig, Liya Shen, Heiner Westphal, Barry Hoffer

Research output: Contribution to journalArticlepeer-review

126 Scopus citations

Abstract

Glial cell line-derived neurotrophic factor (GDNF) is one of the most potent trophic factors that have been identified for midbrain dopamine (DA) neurons. Null mutations for trophic factor genes have been used frequently for studies of the role of these important proteins in brain development. One problem with these studies has been that often only prenatal development can be studied because many of the knockout strains, such as those with GDNF null mutations, will die shortly after birth. In this study, we looked at the continued fate of specific neuronal phenotypes from trophic factor knockout mice beyond the time that these animals die. By transplanting fetal neural tissues from GDNF -/-, GDNF +/-, and wild-type (WT) mice into the brain of adult wild-type mice, we demonstrate that the continued postnatal development of ventral midbrain dopamine neurons is severely disturbed as a result of the GDNF null mutation. Ventral midbrain grafts from -/- fetuses have markedly reduced DA neuron numbers and fiber outgrowth. Moreover, DA neurons in such transplants can be 'rescued' by immersion in GDNF before grafting. These findings suggest that postnatal survival and/or phenotypic expression of ventral mesencephalic DA neurons is dependent on GDNE. In addition, we present here a strategy for studies of maturation and even aging of tissues from trophic factor and other knockout animals that do not survive past birth.

Original languageEnglish
Pages (from-to)3182-3190
Number of pages9
JournalJournal of Neuroscience
Volume20
Issue number9
DOIs
StatePublished - May 1 2000

Keywords

  • DA neurons
  • GDNF
  • Neural development
  • Neurodegeneration
  • Substantia nigra
  • Transplantation
  • Trophic factors

ASJC Scopus subject areas

  • Neuroscience (all)

Fingerprint

Dive into the research topics of 'Glial cell line-derived neurotrophic factor is essential for postnatal survival of midbrain dopamine neurons'. Together they form a unique fingerprint.

Cite this