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- W2896034978 endingPage "1198" @default.
- W2896034978 startingPage "1186" @default.
- W2896034978 abstract "Background: The tissue‐specific transcriptional programs during normal development require tight control by distal cis‐ regulatory elements, such as enhancers, with specific DNA sequences recognized by transcription factors, coactivators, and chromatin remodeling enzymes. Gata3 is a sequence‐specific DNA‐binding transcription factor that regulates formation of multiple tissues and organs, including inner ear, lens, mammary gland, T‐cells, urogenital system, and thyroid gland. In the eye, Gata3 has a highly restricted expression domain in the posterior part of the lens vesicle; however, the underlying regulatory mechanisms are unknown. Results : Here we describe the identification of a novel bipartite Gata3 lens‐specific enhancer located ∼18 kb upstream from its transcriptional start site. We also found that a 5‐kb Gata3 promoter possesses low activity in the lens. The bipartite enhancer contains arrays of AP‐1, Ets‐, and Smad1/5‐binding sites as well as binding sites for lens‐associated DNA‐binding factors. Transient transfection studies of the promoter with the bipartite enhancer showed enhanced activation by BMP4 and FGF2. Conclusions : These studies identify a novel distal enhancer of Gata3 with high activity in lens and indicate that BMP and FGF signaling can up‐regulate expression of Gata3 in differentiating lens fiber cells through the identified Gata3 enhancer and promoter elements. Developmental Dynamics 247:1186–1198, 2018. © 2018 The Authors. Developmental Dynamics published by Wiley Periodicals, Inc. on behalf of American Association of Anatomists" @default.
- W2896034978 created "2018-10-26" @default.
- W2896034978 creator A5010737512 @default.
- W2896034978 creator A5064794855 @default.
- W2896034978 creator A5071984892 @default.
- W2896034978 creator A5072789051 @default.
- W2896034978 date "2018-11-01" @default.
- W2896034978 modified "2023-10-18" @default.
- W2896034978 title "Identification of Novel Gata3 Distal Enhancers Active in Mouse Embryonic Lens" @default.
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- W2896034978 doi "https://doi.org/10.1002/dvdy.24677" @default.