کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2196715 1098847 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Krüppel-like factor 4 controls biosynthesis of thyrotropin-releasing hormone during hypothalamus development
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
The Krüppel-like factor 4 controls biosynthesis of thyrotropin-releasing hormone during hypothalamus development
چکیده انگلیسی

Embryonic neurogenesis is controlled by the activation of specific genetic programs. In the hypothalamus, neuronal thyrotropin-releasing hormone (TRH) populations control important physiological process, including energy homeostasis and autonomic function; however, the genetic program leading to the TRH expression is poorly understood. Here, we show that the Klf4 gene, encoding the transcription factor Krüppel-like factor 4 (Klf4), was expressed in the rat hypothalamus during development and regulated Trh expression. In rat fetal hypothalamic cells Klf4 regulated Trh promoter activity through CACCC and GC motifs present on the Trh gene promoter. Accordingly, hypothalamic Trh expression was down-regulated at embryonic day 15 in the Klf4−/− mice resulting in diminished bioactive peptide levels. Although at the neonatal stage the Trh transcript levels of the Klf4−/− mice were normal, the reduction in peptide levels persisted. Thus, our data indicate that Klf4 plays a key role in the maturation of TRH expression in hypothalamic neurons.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular and Cellular Endocrinology - Volume 333, Issue 2, 20 February 2011, Pages 127–133
نویسندگان
, , , , , , , , ,