Preproenkephalin promoter "cassette" confers brain expression and synaptic regulation in transgenic mice.

TitlePreproenkephalin promoter "cassette" confers brain expression and synaptic regulation in transgenic mice.
Publication TypeJournal Article
Year of Publication1992
JournalProceedings of the National Academy of Sciences of the United States of America
Date Published1992

The preproenkephalin A gene is a neurotransmitter gene whose expression can be modulated "trans-synaptically" by changes in neuronal activity. DNA sequences lying within 200 base pairs of this gene's transcription start site resemble consensus binding sites for several transcription factor families. In nonneuronal cell cultures, this promoter region is sufficient to mediate gene responses to depolarization, phorbol esters, adenylate cyclase, and calcium fluxes. To assess the role that these cis-acting elements could play in preproenkephalin expression and regulation in vivo, the expression of a construct containing this 200-base-pair region fused to the chloramphenicol acetyltransferase gene was examined in transgenic mice. This promoter confers modest expression in brain, adrenal, and small intestine, with substantially higher levels in testis. These elements confer trans-synaptic regulation in two well-studied models of trans-synaptic preproenkephalin upregulation but not in a third system, underscoring the specificity of the regulatory sequence elements implicated in the synaptic regulation of neuronal genes.

Short TitleProc Natl Acad Sci U S A
Enter your linkblue username.
Enter your linkblue password.
Secure Login

This login is SSL protected