Cloning and differential expression of FOXL2 during ovarian development and recrudescence of the catfish, Clarias gariepinus

Sridevi, Parikipandla; Senthilkumaran, B.

doi:10.1016/j.ygcen.2011.08.015

Cited by 41 publications

(23 citation statements)

References 38 publications

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“…This cytoplasmic localization of Foxl2a protein was unexpected but was previously observed for Foxl2a gene and/or protein in some fish species such as catfish, medaka and willow minnow (Nakamura et al, 2009;Sridevi and Senthilkumaran, 2011;Ashida et al, 2013). Regarding cellular localization, Foxl2a gene and protein expression in the follicular layer cells surrounding the oocytes is now well demonstrated in numerous fish species (Table III).…”

supporting

confidence: 66%

“…In various teleost species including zebrafish, two paralogs of foxl2 named foxl2a and foxl2b (also known as foxl2 and foxl3), have been described or predicted and considered as fish-specific duplicates (Baron et al, 2005;Jiang et al, 2011;Crespo et al, 2013). Moreover, foxl2a and cyp19a1a and/or cyp19a1b transcripts levels are positively correlated in catfish (Sridevi and Senthilkumaran, 2011;Sridevi et al, 2012), in rainbow trout (Baron et al, 2004;Vizziano et al, 2007), in medaka (Nakamoto et al, 2006) and in tilapia . Foxl2a has been shown to regulate the transcription of cyp19a1 genes either directly or indirectly by interacting with Ad4 binding protein/steroidogenic factor 1 (Ad4BP/SF-1) or fushi tarazu factor 1 (FTZ-F1) Yamaguchi et al, 2007;Sridevi et al, 2012).…”

Section: Accepted Manuscriptmentioning

confidence: 90%

“…4 Yamaguchi et al, 2007;Ijiri et al, 2008;Dong et al, 2011;Sridevi and Senthilkumaran, 2011;Hattori et al, 2012). In various teleost species including zebrafish, two paralogs of foxl2 named foxl2a and foxl2b (also known as foxl2 and foxl3), have been described or predicted and considered as fish-specific duplicates (Baron et al, 2005;Jiang et al, 2011;Crespo et al, 2013).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Altogether, these data suggest that Foxl2 might be able to regulate the entire steroidogenic process. In fishes, foxl2a displays a clear dimorphic expression in the gonads with higher expression in ovary as compared to testis (Baron et al, 2004;Ijiri et al, 2008;Jiang et al, 2011;Sridevi and Senthilkumaran, 2011;Hattori et al, 2012;Crespo et al, 2013), and seems to be mainly expressed in follicular cells surrounding previtellogenic and vitellogenic oocytes (Nakamoto et al, 2006;Nakamura et al, 2009;Kobayashi et al, 2010b;Herpin et al, 2013).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…In zebrafish testis we localized a low expression of Foxl2a in the nucleus of interstitial Leydig cells and in germ cells (Table II). In some species such as Catfish, Rare minnow, Honeycomb grouper, Rainbow trout and Tilapia, a low but significant expression of foxl2a gene has been detected in the testis by RT-PCR (Baron et al, 2004;Vizziano et al, 2007;Alam et al, 2008;Jiang et al, 2011;Sridevi and Senthilkumaran, 2011), but not by ISH . More recently, foxl2a mRNA has been found by RTq-PCR in the protogynous wrasse testis, and Foxl2a protein was localized in the interstitial Leydig cells by immunofluorescence indicating that the gene was translated into proteins (Kobayashi et al, 2010b).…”

Section: Localization and Expression Of Foxl2amentioning

confidence: 99%

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Localization of steroidogenic enzymes and Foxl2a in the gonads of mature zebrafish ( Danio rerio )

Caulier¹,

Brion²,

Chadili³

et al. 2015

Comparative Biochemistry and Physiology Part A: Molecular &

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In zebrafish, the identification of the cells expressing steroidogenic enzymes and their regulators is far from completely fulfilled though it could provide crucial information on the elucidation of the role of these enzymes. The aim of this study was to better characterize the expression pattern of steroidogenic enzymes involved in estrogen and androgen production (Cyp17-I, Cyp11c1, Cyp19a1a and Cyp19a1b) and one of their regulators (Foxl2a) in zebrafish gonads. By using immunohistochemistry, we localized the steroid-producing cells in mature zebrafish gonads and determined different expression patterns between males and females. All these steroidogenic enzymes and Foxl2a were detected both in the testis and ovary. In the testis, they were all localized both in Leydig and germ cells except Cyp19a1b which was only detected in germ cells. In the ovary, Cyp17-I, Cyp19a1a and Foxl2a were immunolocalized in both somatic and germ cells while Cyp19a1b was only detected in germ cells and Cyp11c1 in somatic cells. Moreover, Cyp19a1a and Foxl2a did not display exactly the same patterns of spatial localization but their expressions were correlated suggesting a possible regulation of cyp19a1a gene by Foxl2a in zebrafish. Comparative analysis revealed a dimorphic expression of Cyp11c1, Cyp19a1a, Cyp19a1b and Foxl2a between males and females. Overall, our study provides a detailed description of the expression of proteins involved in the biosynthesis of steroidal hormones at the cellular scale within gonads, which is critical to further elucidating the intimate roles of the enzymes and the use of the zebrafish as a model in the field of endocrinology.

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supporting

confidence: 66%

Section: Accepted Manuscriptmentioning

confidence: 90%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Localization and Expression Of Foxl2amentioning

confidence: 99%

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Localization of steroidogenic enzymes and Foxl2a in the gonads of mature zebrafish ( Danio rerio )

Caulier¹,

Brion²,

Chadili³

et al. 2015

Comparative Biochemistry and Physiology Part A: Molecular &

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Environmental Sex Determination and Sex Differentiation in Teleosts – How Sex Is Established

Shen

Wang

2018

Sex Control in Aquaculture

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Germ Cell Migration, Proliferation and Differentiation during Gonadal Morphogenesis in All‐Female Japanese Flounder (Paralichthys Olivaceus)

Yang

Liu

Xiao

et al. 2018

The Anatomical Record

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In this study, all genetic female (XX) broods of Japanese flounder were produced artificially by mating the females with sex-reversed males. The proliferation and migration of primordial germ cells (PGCs), formation of ovary and oogenesis were described in detail. After hatching, around 20 individual PGCs migrated from the lateral to the dorsal of trunk region. At 15 days posthatching (dph), a part of PGCs were covered by a single layer somatic cells and formed the genital ridge. By 22 dph, the elongated gonadal primordia appeared under the ventral kidney, where the PGCs were totally enclosed by somatic cells. During the process of migration, PGCs were presumed to be mitotically inactive. From 63 to 73 dph, somatic cells rearrangement resulted in the formation of a narrow crevice, which became deeper and formed ovarian lumen. However, at 52 dph, dramatic mitotic proliferation of germ cell occurred and germline nest formed before the appearance of ovarian lumen. The onset of intensive germ cell proliferation and appearance of cell nests could be accepted as a criterion of initial ovarian differentiation. Then germ cells and somatic epithelial cells were gradually delimited by basement membrane and formed the germinal epithelium. In this period, results from in situ hybridization revealed that the early forkhead box L2 (pofoxl2) was expressed in somatic cells and oocytes in primary growth, which indicated the prefollicle cells formed. Then oogonia or oocytes, follicle cells, basement membrane, and theca cells composed a follicle complex. Finally, oocytes underwent meiosis and developed into to mature eggs. Anat Rec, 301:727-741, 2018. © 2017 Wiley Periodicals, Inc.

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Cloning and differential expression of FOXL2 during ovarian development and recrudescence of the catfish, Clarias gariepinus

Cited by 41 publications

References 38 publications

Localization of steroidogenic enzymes and Foxl2a in the gonads of mature zebrafish ( Danio rerio )

Localization of steroidogenic enzymes and Foxl2a in the gonads of mature zebrafish ( Danio rerio )

Environmental Sex Determination and Sex Differentiation in Teleosts – How Sex Is Established

Germ Cell Migration, Proliferation and Differentiation during Gonadal Morphogenesis in All‐Female Japanese Flounder (Paralichthys Olivaceus)

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