Oestradiol upregulates the expression of Cyp19a1a and the feminization ratio in Schizothorax prenanti

Cai, Yueping; He, Zhi; Zhang, Qian; Wang, Xiongyan; Zhang, Songpei; He, Liang; Yang, Deying; Zhang, Mingwang; Yan, Taiming

doi:10.1016/j.aqrep.2022.101138

Cited by 1 publication

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“…Gonadal development and sexual activity are not only determined by the interactions of multiple genes but also by environmental factors, such as temperature or hormone exposure [ 46 , 47 ], and exposure to exogenous hormones during gonadal differentiation can alter the population gender ratio [ 48 , 49 ]. Steroid hormones are natural and induce sex change processes [ 50 ], among which E2 is one of the most potent estrogens impacting sex differentiation [ 51 ] and MT is one of the most potent androgens impacting sex differentiation [ 52 ].…”

Section: Discussionmentioning

confidence: 99%

Expression and Characterization of the Spats1 Gene and Its Response to E2/MT Treatment in the Chinese Soft-Shelled Turtle (Pelodiscus sinensis)

Luo

Zhu

Chen

et al. 2022

Animals

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Spats1 (spermatogenesis-associated, serinerich 1) has been characterized as a male-biased gene which acts an important role in the germ cell differentiation of mammals. Nevertheless, the function of Spats1 in the Chinese soft-shelled turtle (P. sinensis) has not yet been reported. To initially explore the expression of Spats1 in P. sinensis and its response to sex steroid treatment, we cloned the CDS of Spats1 for the first time and analyzed its expression profile in different tissues, including the testes in different seasons. The Spats1 cDNA fragment is 1201 base pairs (bp) in length and contains an open reading frame (ORF) of 849 bp, which codes for 283 amino acids. Spats1 mRNA was highly expressed in the testes (p < 0.01) and barely detectable in other tissues. In P. sinensis, the relative expression of Spats1 also responsive to seasonal changes in testis development. In summer (July) and autumn (October), Spats1 gene expression was significantly higher in the testes than in other seasons (p < 0.05). Spats1 mRNA was found to be specifically expressed in germ cells by chemical in situ hybridization (CISH), and it was mainly located in primary spermatocytes (Sc1), secondary spermatocytes (Sc2) and spermatozoa (St). Spats1 expression in embryos was not significantly changed after 17α-methyltestosterone (MT)and 17β-estradiol (E2) treatment. In adults, MT significantly induced Spats1 expression in male P. sinensis. However, the expression of Spats1 in testes was not responsive to E2 treatment. In addition, the expression of Spats1 in females was not affected by either MT or E2 treatment. These results imply that Spats1 is a male-specific expressed gene that is mainly regulated by MT and is closely linked to spermatogenesis and release in P. sinensis.

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