Leading science, pioneering therapies
CRM Publications

Rescuing impairment of long-term potentiation in fyn-deficient mice by introducing Fyn transgene.

TitleRescuing impairment of long-term potentiation in fyn-deficient mice by introducing Fyn transgene.
Publication TypeJournal Article
Year of Publication1997
AuthorsKojima N, Wang J, Mansuy IM, Grant SG, Mayford M, Kandel ER
JournalProc Natl Acad Sci U S A
Volume94
Issue9
Pagination4761-5
Date Published1997 Apr 29
ISSN0027-8424
KeywordsAge Factors, Animals, Hippocampus, Long-Term Potentiation, Mice, Mice, Transgenic, Neurons, Protein-Tyrosine Kinases, Proto-Oncogene Proteins, Proto-Oncogene Proteins c-fyn, Proto-Oncogene Proteins pp60(c-src)
Abstract

To examine the physiological role of the Fyn tyrosine kinase in neurons, we generated transgenic mice that expressed a fyn cDNA under the control of the calcium/calmodulin-dependent protein kinase IIalpha promoter. With this promoter, we detected only low expression of Fyn in the neonatal brain. In contrast, there was strong expression of the fyn-transgene in neurons of the adult forebrain. To determine whether the impairment of long-term potentiation (LTP) observed in adult fyn-deficient mice was caused directly by the lack of Fyn in adult hippocampal neurons or indirectly by an impairment in neuronal development, we generated fyn-rescue mice by introducing the wild-type fyn-transgene into mice carrying a targeted deletion in the endogenous fyn gene. In fyn-rescue mice, Schaffer collateral LTP was restored, even though the morphological abnormalities characteristic of fyn-deficient mice were still present. These results suggest that Fyn contributes, at least in part, to the molecular mechanisms of LTP induction.

Alternate JournalProc. Natl. Acad. Sci. U.S.A.
PubMed ID9114065
PubMed Central IDPMC20798