Movatterモバイル変換


[0]ホーム

URL:


Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
Thehttps:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

NIH NLM Logo
Log inShow account info
Access keysNCBI HomepageMyNCBI HomepageMain ContentMain Navigation
pubmed logo
Advanced Clipboard
User Guide

Full text links

Silverchair Information Systems full text link Silverchair Information Systems
Full text links

Actions

Share

.2002 Dec;103(6):613-21.
doi: 10.1042/cs1030613.

Retinoid receptors in the developing human lung

Affiliations

Retinoid receptors in the developing human lung

Yuichiro Kimura et al. Clin Sci (Lond).2002 Dec.

Abstract

Nuclear receptors and their ligands are known to play very important roles in lung development. Among these receptors, retinoid receptors, members of the steroid/thyroid hormone receptor superfamily, are classified into retinoic acid receptor (RAR) isoforms alpha, beta, and gamma and retinoid X receptor (RXR) isoforms alpha, beta, and gamma. In addition, isoforms I and II of the orphan receptor chicken ovalbumin upstream promoter-transcription factor (COUP-TF) have been shown to negatively regulate the activation of retinoid receptors. Both of these receptors have been shown to regulate lung development in the mouse. In the present study we utilized immunohistochemistry and real-time quantitative PCR to examine the expression of RAR-alpha, -beta and -gamma, RXR-alpha, -beta and -gamma and COUP-TFII in the human fetal lung at 13-16 gestational weeks, a very critical stage of human pulmonary development, in order to study possible roles in pulmonary morphogenesis by comparing these findings with those of the adult lung. RXR-gamma immunoreactivity was detected at both proximal (epithelia and mesenchyme of the trachea and bronchi associated with cartilage) and distal (epithelia and mesenchyme of smaller distal bronchi) sites in the fetal lung, but was markedly weaker in the adult lung. RAR-beta immunoreactivity was detected in distal mesenchymal cells of the fetal lung, but was not discernible in distal mesenchymal cells in the adult lung (bronchioles, alveolar ducts and alveolus). Relatively intense RAR-gamma immunoreactivity was detected in the chondrocytes of bronchial cells. COUP-TFII immunoreactivity was detected with a similar pattern to that of RAR-beta. Real-time quantitative PCR analyses revealed that mRNA levels of RXR-gamma at proximal and distal sites (ratio of fetal lung/adult lung: 3.4+/-0.05-fold and 3.1+/-0.03-fold respectively; P <0.01), RAR-beta at distal sites (2.4+/-0.01-fold; P <0.05) and RAR-gamma at proximal sites (2.2+/-0.11-fold; P <0.05) were significantly higher in the fetus than in the adult.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

Publication types

MeSH terms

Substances

Related information

LinkOut - more resources

Full text links
Silverchair Information Systems full text link Silverchair Information Systems
Cite
Send To

NCBI Literature Resources

MeSHPMCBookshelfDisclaimer

The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Unauthorized use of these marks is strictly prohibited.


[8]ページ先頭

©2009-2025 Movatter.jp