Isolation of CYP17 I,3β-HSD and AR Genes from Spotted Sea Bass(Lateolabrax maculatus)Testis and Their Responses to Hormones and Salinity Stimulations-中国期刊网

摘要 Inthisstudy,threecDNAsequencescorrespondingtocytochromeP450C17(CYP17I),3β-hydroxysteroiddehydrogenase(3β-HSD)andandrogenreceptor(AR)wereisolatedfromspottedseabass(Lateolabraxmaculatus).ThemRNAabundancesofCYP17Iand3β-HSDincreasedfromstageⅡtostageⅤwithasignificantincreaseatstageⅤ,andthehighestabundanceofARmRNAwasdetectedatstageⅢintesticulardevelopmentcycle.CYP17I,3β-HSDandARtranscriptswereobviouslyabundantinsteroidogenesistissuessuchastestis,brain,headkidneyamongothers.StrongandpositivesignalswereobservedmainlyininterstitialcellregionsofL.maculatustestisasweremeasuredwithinsituhybridizationmethod.SignificantincreasesofCYP17Iand3β-HSDtranscriptsweredetectedafter12–48hhCG(humanchorionicgonadotropin)andGnRHa(gonadotropin-releasinghormoneanalogue)treatments.However,anoppositerelationshipwasfoundforARintestisatthesametime.Inaddition,decreasingtrendsofCYP17Iand3β-HSDmRNAwereobservedintestisofL.maculatusinfreshwatergroup(FW)fromday2today6,andmRNAabundanceofARincreasedinbrackishwater(BW)groupfromday4today8.Thesefindingsrevealedthatthesethreesteroidsynthesisgenesareimportfortesticulardevelopment,hormoneandsalinitytreatment,andprovidedalsoaninsightintothemechanismofreproductiveendocrineofL.maculatus.

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Isolation of CYP17 I,3β-HSD and AR Genes from Spotted Sea Bass(Lateolabrax maculatus)Testis and Their Responses to Hormones and Salinity Stimulations

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Isolation of CYP17 I,3β-HSD and AR Genes from Spotted Sea Bass(Lateolabrax maculatus)Testis and Their Responses to Hormones and Salinity Stimulations

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