Further delineation of the sequences required for the expression and physiological regulation of the vasopressin gene in transgenic rat hypothalamic magnocellular neurones

被引：23

作者：

Davies, J

Waller, S

Zeng, Q

Wells, S

Murphy, D ^{[1
]}

机构：

[1] Univ Bristol, Bristol Royal Infirm, Res Ctr Neuroendocrinol, Mol Neuroendocrinol Res Grp, Bristol BS2 8HW, Avon, England

[2] Natl Univ Singapore, Inst Mol & Cell Biol, Singapore 117548, Singapore

来源：

JOURNAL OF NEUROENDOCRINOLOGY | 2003年 / 15卷 / 01期

关键词：

vasopressin; magnocellular neurones; transgenic rats; cell-specific expression; physiological regulation;

D O I：

10.1046/j.1365-2826.2003.00865.x

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

We have introduced transgenes into rats with a view to defining genomic regions that mediate the cell-specific and physiological regulation of the vasopressin gene. These transgenes consist of the rat vasopressin structural gene with a reporter inserted into exon III, flanked by different lengths of upstream and downstream sequences. 11-VCAT-3 is flanked by 11 kbp of upstream sequences and 3 kbp of downstream sequences. The previously described 5-VCAT-3 is flanked by 5 kbp of upstream and 3 kbp of downstream sequences. 3-VCAT-3 has 3 kbp of upstream and 3 kbp of downstream sequences, and 3-VCAT-0.2 is flanked by 3 kbp of upstream and 0.2 kbp of downstream sequences. All four transgenes elicit the same expression patterns; low basal expression is seen in the magnocellular supraoptic and paraventricular nuclei, and is negligible in the suprachiasmatic nucleus. Expression increases markedly in vasopressin magnocellular cells following dehydration. The sequences responsible for the cell-specific expression and physiological regulation of our transgenes thus reside within the confines of the smallest construct studied, 3-VCAT-0.2.

引用

页码：42 / 50

页数：9

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