Ethanol-induced intracellular calcium mobilization rapidly alters gene expression in the mouse blastocyst.
Cell Calcium
; 22(6): 463-74, 1997 Dec.
Article
em En
| MEDLINE
| ID: mdl-9502196
ABSTRACT
The induction of intracellular Ca2+ release in pre-implantation mouse embryos accelerates their subsequent rate of development in vitro through a calmodulin-dependent mechanism [Stachecki J.J., Armant D.R. Transient release of calcium from inositol 1,4,5-trisphosphate-specific stores regulates mouse pre-implantation development. Development 1996; 122 2485-2496]. To examine the hypothesis that intracellular Ca2+ signaling alters embryonic gene expression, individual transcript levels were compared by mRNA differential display before and 1 h after intracellular Ca2+ mobilization with ethanol in mouse blastocysts. Ten up-regulated and four down-regulated genes were observed, representing 3.5% of approximately 400 transcripts that were resolved. After sequencing, most of the DNA fragments appeared to be novel; however, two amplicons that increased after Ca2+ mobilization were identified as arginase and ubiquitin conjugating enzyme (E2). The up-regulation of arginase mRNA (3.5-fold after 2 h) was confirmed by reverse transcription and the polymerase chain reaction using specific oligonucleotide primers derived from the deduced mouse embryo sequence. A corresponding 2.5-fold increase in arginase enzymatic activity peaked 9 h after ethanol exposure. Increased expression of arginase and other genes may mediate the onset of rapid cell proliferation and differentiation that is induced by Ca2+ signaling during pre-implantation development.
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Base de dados:
MEDLINE
Assunto principal:
Cálcio
/
Regulação da Expressão Gênica no Desenvolvimento
/
Etanol
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
1997
Tipo de documento:
Article