FoxH1 Represses the Promoter Activity of <i<cyp19a1a</i< in the Ricefield Eel (<i<Monopterus albus</i<)
Forkhead box H1 (FoxH1) is a sexually dimorphic gene in <i<Oreochromis niloticus</i<, <i<Oplegnathus fasciatus</i<, and <i<Acanthopagrus latus</i<, indicating that it is essential for gonadal development. In the present study, the molecular characteristics and potential function of FoxH1 and the activation of the <i<cyp19a1a</i< promoter in vitro were evaluated in <i<Monopterus albus</i<. The levels of <i<foxh1</i< in the ovaries were three times higher than those in the testes and were regulated by gonadotropins (Follicle-Stimulating Hormone and Human Chorionic Gonadotropin). FoxH1 colocalized with Cyp19a1a in the oocytes and granulosa cells of middle and late vitellogenic follicles. In addition, three FoxH1 binding sites were identified in the proximal promoter of <i<cyp19a1a</i<, namely, FH1 (−871/−860), FH2 (−535/−524), and FH3 (−218/−207). FoxH1 overexpression significantly attenuated the activity of the <i<cyp19a1a</i< promoter in CHO cells, and FH1/2 mutation increased promoter activity. Taken together, these results suggest that FoxH1 may act as an important regulator in the ovarian development of <i<M. albus</i< by repressing <i<cyp19a1a</i< promoter activity, which provides a foundation for the study of FoxH1 function in bony fish reproductive processes..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:24 |
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| Enthalten in: |
International Journal of Molecular Sciences - 24(2023), 13712, p 13712 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhi He [VerfasserIn] |
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| Links: |
doi.org [kostenfrei] |
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| Themen: |
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| doi: |
10.3390/ijms241813712 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
DOAJ093392028 |
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| 520 | |a Forkhead box H1 (FoxH1) is a sexually dimorphic gene in <i<Oreochromis niloticus</i<, <i<Oplegnathus fasciatus</i<, and <i<Acanthopagrus latus</i<, indicating that it is essential for gonadal development. In the present study, the molecular characteristics and potential function of FoxH1 and the activation of the <i<cyp19a1a</i< promoter in vitro were evaluated in <i<Monopterus albus</i<. The levels of <i<foxh1</i< in the ovaries were three times higher than those in the testes and were regulated by gonadotropins (Follicle-Stimulating Hormone and Human Chorionic Gonadotropin). FoxH1 colocalized with Cyp19a1a in the oocytes and granulosa cells of middle and late vitellogenic follicles. In addition, three FoxH1 binding sites were identified in the proximal promoter of <i<cyp19a1a</i<, namely, FH1 (−871/−860), FH2 (−535/−524), and FH3 (−218/−207). FoxH1 overexpression significantly attenuated the activity of the <i<cyp19a1a</i< promoter in CHO cells, and FH1/2 mutation increased promoter activity. Taken together, these results suggest that FoxH1 may act as an important regulator in the ovarian development of <i<M. albus</i< by repressing <i<cyp19a1a</i< promoter activity, which provides a foundation for the study of FoxH1 function in bony fish reproductive processes. | ||
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