Cyclooxygenases of ovoviviparous black rockfish (Sebastes schlegelii): Cloning, tissue distribution and potential role in mating and parturition

Prostaglandins are a series of unsaturated fatty acids that play critical roles in regulating reproductive events. The prostaglandins endoperoxide H synthases-1/2 (PGHS-1/2; also named cyclooxygenases-1/2, COX-1/2) catalyse the commitment step in prostaglandin synthesis. However, the of the cox gene...

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Veröffentlicht in:Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 2022-01, Vol.257, p.110677-110677, Article 110677
Hauptverfasser: Lyu, Likang, Wang, Ru, Wen, Haishen, Li, Yun, Li, Jianshuang, Wang, Xiaojie, Yao, Yijia, Li, Jifang, Qi, Xin
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Sprache:eng
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Zusammenfassung:Prostaglandins are a series of unsaturated fatty acids that play critical roles in regulating reproductive events. The prostaglandins endoperoxide H synthases-1/2 (PGHS-1/2; also named cyclooxygenases-1/2, COX-1/2) catalyse the commitment step in prostaglandin synthesis. However, the of the cox genes in teleosts, especially ovoviviparous teleosts, is still unclear. The aim of the present study was to determine the potential role of cox genes in mating and parturition behaviour using black rockfish (Sebastes schlegelii) as a model species. Two transcripts, cox1 and cox2, were cloned. The phylogenetic analysis results revealed that both cox genes were closely related to mammalian coxs. qPCR analyses of their tissue distribution showed that cox1 was mainly expressed in the heart in both sexes, while cox2 was mainly expressed in the testis and ovary. Detection of cox expression in samples from reproductive-related stages further showed that both cox genes may play important roles in mating and parturition processes. In situ hybridization further detected positive cox mRNA signals in the testis and ovary, where they are known to be involved in mating and parturition behaviour. These data suggest that cox1 and cox2 are crucial in inducing mating, gonad regeneration and parturition behaviour. [Display omitted] •Two coxs cDNA were cloned in ovoviviparity teleost black rockfish.•Different expression of both coxs were determined.•The expression pattern of coxs in gonad were involved in different developing stages.•Black rockfish coxs were located in specific cells in testis and ovary.
ISSN:1096-4959
1879-1107
DOI:10.1016/j.cbpb.2021.110677