Cloning of genomic sequences of three crustacean hyperglycemic hormone superfamily genes and elucidation of their roles of regulating insulin-like androgenic gland hormone gene
文献类型: 外文期刊
第一作者: Li, Fajun
作者: Li, Fajun;Bai, Hongkun;Fu, Hongtuo;Jiang, Fengwei;Liang, Guoxia;Li, Fajun;Zhang, Wenyi;Fu, Hongtuo;Jin, Shubo;Sun, Shengming;Qiao, Hui
作者机构:
关键词: Macrobrachium nipponense;Gonad-inhibiting hormone;Molt-inhibiting hormone;Crustacean hyperglycemic hormone;Insulin-like androgenic gland hormone gene
期刊名称:GENE ( 影响因子:3.688; 五年影响因子:3.329 )
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收录情况: SCI
摘要: The insulin-like androgenic gland hormone (IAG) gene in crustaceans plays an important role in male sexual differentiation, metabolism, and growth. However, the upstream regulation of JAG signaling schemes remains poorly studied. In the present study, we cloned the 5' flanking sequence of JAG and full-length genomic sequences of gonad-inhibiting hormone (Mn-GIH), molt-inhibiting hormone (Mn-MIH) and crustacean hyperglycemic hormone (Mn-CHH) in Macro brachium nipponense. We identified the transcription factor-binding sites in the 5' flanking sequence of IAG and investigated the exon-intron patterns of the three CHH superfamily genes. Each CHH superfamily gene consisted of two introns separating three exons. Mn-GIH and Mn-MIH shared the same intron insertion sites, which differed from Mn-CHH. We provided DNA-level evidence for the type definition. We also identified two cAMP response elements in the 5' untranslated region. We further investigated the regulatory relationships between Mn-GIH, Mn-MIH, and Mn-CHH and JAG at the transcriptional level by injection of double-stranded RNA (dsRNA). JAG transcription levels were significantly increased to 6602%, 472.9%, and 112.4% of control levels in the Mn-GIH dsRNA, Mn-MIH dsRNA, and Mn-CHH dsRNA groups, respectively. The results clearly demonstrated that Mn-GIH and Mn-MIH, but not Mn-CHH, negatively regulate the expression of the JAG gene. (C) 2015 Elsevier B.V. All rights reserved.
分类号: R394
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