Gata-6 expression is decreased in diaphragmatic and pulmonary mesenchyme of fetal rats with nitrofen-induced congenital diaphragmatic hernia

Gata-6 expression is decreased in diaphragmatic and pulmonary mesenchyme of fetal rats with... Purpose Congenital diaphragmatic hernia (CDH) and associated pulmonary hypoplasia are thought to be caused by a malformation of the underlying diaphragmatic and airway mesenchyme. GATA binding protein 6 (Gata-6) is a zinc finger- containing transcription factor that plays a crucial role during diaphragm and lung development. In the primordial diaphragm, Gata-6 expression is restricted to mesenchymal compartments of the pleuroperitoneal folds (PPFs). In addition, Gata-6 is essential for airway branching morphogenesis through upregulation of mesenchymal signaling. Recently, mutations in Gata- 6 have been linked to human CDH. We hypothesized that diaphragmatic and pulmonary Gata-6 expression is decreased in the nitrofen-induced CDH model. Methods Time-mated rats were exposed to either nitrofen or vehicle on gestational day 9 (D9). Fetal diaphragms (n = 72) and lungs (n = 48) were microdissected on selected timepoints D13, D15 and D18, and divided into control and nitrofen- exposed specimens (n = 12 per sample, timepoint and experimental group, respectively). Diaphragmatic and pulmonary gene expression of Gata-6 was analyzed by qRT-PCR. Immunofluorescence-double staining for Gata-6 was combined with the diaphragmatic mesenchymal marker Gata-4 and the pulmonary mesenchymal marker Fgf-10 to evaluate protein expression and localization in fetal diaphragms and lungs. Results Relative mRNA expression levels http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pediatric Surgery International Springer Journals

Gata-6 expression is decreased in diaphragmatic and pulmonary mesenchyme of fetal rats with nitrofen-induced congenital diaphragmatic hernia

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Medicine & Public Health; Pediatrics; Surgery; Pediatric Surgery
ISSN
0179-0358
eISSN
1437-9813
D.O.I.
10.1007/s00383-017-4219-8
Publisher site
See Article on Publisher Site

Abstract

Purpose Congenital diaphragmatic hernia (CDH) and associated pulmonary hypoplasia are thought to be caused by a malformation of the underlying diaphragmatic and airway mesenchyme. GATA binding protein 6 (Gata-6) is a zinc finger- containing transcription factor that plays a crucial role during diaphragm and lung development. In the primordial diaphragm, Gata-6 expression is restricted to mesenchymal compartments of the pleuroperitoneal folds (PPFs). In addition, Gata-6 is essential for airway branching morphogenesis through upregulation of mesenchymal signaling. Recently, mutations in Gata- 6 have been linked to human CDH. We hypothesized that diaphragmatic and pulmonary Gata-6 expression is decreased in the nitrofen-induced CDH model. Methods Time-mated rats were exposed to either nitrofen or vehicle on gestational day 9 (D9). Fetal diaphragms (n = 72) and lungs (n = 48) were microdissected on selected timepoints D13, D15 and D18, and divided into control and nitrofen- exposed specimens (n = 12 per sample, timepoint and experimental group, respectively). Diaphragmatic and pulmonary gene expression of Gata-6 was analyzed by qRT-PCR. Immunofluorescence-double staining for Gata-6 was combined with the diaphragmatic mesenchymal marker Gata-4 and the pulmonary mesenchymal marker Fgf-10 to evaluate protein expression and localization in fetal diaphragms and lungs. Results Relative mRNA expression levels

Journal

Pediatric Surgery InternationalSpringer Journals

Published: Dec 2, 2017

References

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