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Roles of Gonadotropin Receptors in Sexual Development of Medaka
The gonadotropins, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), are secreted from the pituitary and bind to the FSH receptor (FSHR) and LH receptor (LHR) to regulate gonadal development in vertebrates. Previously, using fshr-knockout (KO) medaka (Oryzias latipes), we demonstrated...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8834109/ https://www.ncbi.nlm.nih.gov/pubmed/35159197 http://dx.doi.org/10.3390/cells11030387 |
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author | Kitano, Takeshi Takenaka, Tomoaki Takagi, Hisanori Yoshiura, Yasutoshi Kazeto, Yukinori Hirai, Toshiaki Mukai, Koki Nozu, Ryo |
author_facet | Kitano, Takeshi Takenaka, Tomoaki Takagi, Hisanori Yoshiura, Yasutoshi Kazeto, Yukinori Hirai, Toshiaki Mukai, Koki Nozu, Ryo |
author_sort | Kitano, Takeshi |
collection | PubMed |
description | The gonadotropins, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), are secreted from the pituitary and bind to the FSH receptor (FSHR) and LH receptor (LHR) to regulate gonadal development in vertebrates. Previously, using fshr-knockout (KO) medaka (Oryzias latipes), we demonstrated that FSH regulates ovarian development by elevating estrogen levels. However, the lhr-KO phenotype in medaka is poorly characterized. Here, we generated lhr-KO medaka using the transcription activator-like effector nuclease (TALEN) technique. We analyzed its phenotype and that of fshr-KO, lhr;fshr double-heterozygotes (double-hetero), and double-KO fish. All genetically male medaka displayed normal testes and were fertile, whereas fshr-KO and double-KO genetically female fish displayed small ovaries containing many early pre-vitellogenic oocytes and were infertile. Although lhr-KO genetically female fish had normal ovaries with full-grown oocytes, ovulation did not occur. Levels of 17α,20β-dihydroxy-4-pregnen-3-one, which is required for meiotic maturation of oocytes and sperm maturation in teleost fish, were significantly decreased in all KO female medaka ovaries except for double-heteros. Further, 17β-estradiol levels in fshr-KO and double-KO ovaries were significantly lower than those in double-heteros. These findings indicate that LH is necessary for oocyte maturation and FSH is necessary for follicle development, but that neither are essential for spermatogenesis in medaka. |
format | Online Article Text |
id | pubmed-8834109 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-88341092022-02-12 Roles of Gonadotropin Receptors in Sexual Development of Medaka Kitano, Takeshi Takenaka, Tomoaki Takagi, Hisanori Yoshiura, Yasutoshi Kazeto, Yukinori Hirai, Toshiaki Mukai, Koki Nozu, Ryo Cells Article The gonadotropins, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), are secreted from the pituitary and bind to the FSH receptor (FSHR) and LH receptor (LHR) to regulate gonadal development in vertebrates. Previously, using fshr-knockout (KO) medaka (Oryzias latipes), we demonstrated that FSH regulates ovarian development by elevating estrogen levels. However, the lhr-KO phenotype in medaka is poorly characterized. Here, we generated lhr-KO medaka using the transcription activator-like effector nuclease (TALEN) technique. We analyzed its phenotype and that of fshr-KO, lhr;fshr double-heterozygotes (double-hetero), and double-KO fish. All genetically male medaka displayed normal testes and were fertile, whereas fshr-KO and double-KO genetically female fish displayed small ovaries containing many early pre-vitellogenic oocytes and were infertile. Although lhr-KO genetically female fish had normal ovaries with full-grown oocytes, ovulation did not occur. Levels of 17α,20β-dihydroxy-4-pregnen-3-one, which is required for meiotic maturation of oocytes and sperm maturation in teleost fish, were significantly decreased in all KO female medaka ovaries except for double-heteros. Further, 17β-estradiol levels in fshr-KO and double-KO ovaries were significantly lower than those in double-heteros. These findings indicate that LH is necessary for oocyte maturation and FSH is necessary for follicle development, but that neither are essential for spermatogenesis in medaka. MDPI 2022-01-24 /pmc/articles/PMC8834109/ /pubmed/35159197 http://dx.doi.org/10.3390/cells11030387 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kitano, Takeshi Takenaka, Tomoaki Takagi, Hisanori Yoshiura, Yasutoshi Kazeto, Yukinori Hirai, Toshiaki Mukai, Koki Nozu, Ryo Roles of Gonadotropin Receptors in Sexual Development of Medaka |
title | Roles of Gonadotropin Receptors in Sexual Development of Medaka |
title_full | Roles of Gonadotropin Receptors in Sexual Development of Medaka |
title_fullStr | Roles of Gonadotropin Receptors in Sexual Development of Medaka |
title_full_unstemmed | Roles of Gonadotropin Receptors in Sexual Development of Medaka |
title_short | Roles of Gonadotropin Receptors in Sexual Development of Medaka |
title_sort | roles of gonadotropin receptors in sexual development of medaka |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8834109/ https://www.ncbi.nlm.nih.gov/pubmed/35159197 http://dx.doi.org/10.3390/cells11030387 |
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