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- W4310484996 endingPage "15060" @default.
- W4310484996 startingPage "15060" @default.
- W4310484996 abstract "The peptide hormone insulin-like 3 (INSL3) is produced almost exclusively by Leydig cells of the male gonad. INSL3 has several functions such as fetal testis descent and bone metabolism in adults. Insl3 gene expression in Leydig cells is not hormonally regulated but rather is constitutively expressed. The regulatory region of the Insl3 gene has been described in various species; moreover, functional studies have revealed that the Insl3 promoter is regulated by various transcription factors that include the nuclear receptors AR, NUR77, COUP-TFII, LRH1, and SF1, as well as the Krüppel-like factor KLF6. However, these transcription factors are also found in several tissues that do not express Insl3, indicating that other, yet unidentified factors, must be involved to drive Insl3 expression specifically in Leydig cells. Through a fine functional promoter analysis, we have identified a 35-bp region that is responsible for conferring 70% of the activity of the mouse Insl3 promoter in Leydig cells. All tri- and dinucleotide mutations introduced dramatically reduced Insl3 promoter activity, indicating that the entire 35-bp sequence is required. Nuclear proteins from MA-10 Leydig cells bound specifically to the 35-bp region. The 35-bp sequence contains GC- and GA-rich motifs as well as potential binding elements for members of the CREB, C/EBP, AP1, AP2, and NF-κB families. The Insl3 promoter was indeed activated 2-fold by NF-κB p50 but not by other transcription factors tested. These results help to further define the regulation of Insl3 gene transcription in Leydig cells." @default.
- W4310484996 created "2022-12-11" @default.
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- W4310484996 creator A5061587214 @default.
- W4310484996 creator A5089185756 @default.
- W4310484996 date "2022-12-01" @default.
- W4310484996 modified "2023-09-27" @default.
- W4310484996 title "A 35-bp Conserved Region Is Crucial for Insl3 Promoter Activity in Mouse MA-10 Leydig Cells" @default.
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- W4310484996 doi "https://doi.org/10.3390/ijms232315060" @default.
- W4310484996 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36499388" @default.
- W4310484996 hasPublicationYear "2022" @default.
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