Variegated expression of a mouse steroid 21-hydroxylase/β-galactosidase transgene suggests centripetal migration of adrenocortical cells

Steven D. Morley, Isabelle Viard, Bon Chu Chung, Yayoi Ikeda, Keith L. Parker, John J. Mullins

研究成果: Contribution to journalArticle査読

94 被引用数 (Scopus)

抄録

5'-Flanking sequences (6.4 kb) of the mouse steroid 21-hydroxylase (21- OHase) A gene linked to a LacZ reporter gene directed appropriate cell- specific expression in cultured Y1 adrenocortical tumor cells and in the adrenal cortex of transgenic mice. The transgene expression initiated at the same stage of adrenal development as the endogenous 21-OHase gene (embryonic day 11.5). Although the endogenous 21-OHase gene is expressed throughout the adrenal cortex, the 21-OHase/β-gal transgene showed a strikingly variegated pattern of adrenocortical expression in all 10 transgene-expressing mouse lines examined. This presents as radial stripes of β-gal staining transcending the classical zonal structure of the adrenal cortex but paralleling the columnar arrangement of cells of the zona fasciculata and the centripetal organization of the adrenocortical blood supply. To the extent that the variegated pattern of 21-OHase/β-gal transgene expression depicts adrenocortical cell lineage, these results suggest that all cells within an individual stripe have a common clonal origin; the radial pattern of clonally derived cells argues that cellular migration maintains the adult adrenocortical cell population. Adrenal glands of developing embryos also exhibited a variegated pattern of 21-OHase/β-gal transgene expression. However, this presented as islands of β-gal reporter staining within the developing gland, suggesting that the rapid embryonic adrenal growth phase, which precedes the establishment of the classic adrenocortical zonal structure, may be governed by cellular mechanisms distinct from those responsible for maintenance of the adult adrenocortical cell population.

本文言語英語
ページ(範囲)585-598
ページ数14
ジャーナルMolecular Endocrinology
10
5
DOI
出版ステータス出版済み - 1996

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Endocrinology

フィンガープリント 「Variegated expression of a mouse steroid 21-hydroxylase/β-galactosidase transgene suggests centripetal migration of adrenocortical cells」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル