The cell fate of primordial germ cell(PGC)in zebrafish is pre-determined by maternally deposited germ plasm,which is packaged into ribonucleoprotein complex in oocytes and inherited into PGC-fated cells in embryos.How...The cell fate of primordial germ cell(PGC)in zebrafish is pre-determined by maternally deposited germ plasm,which is packaged into ribonucleoprotein complex in oocytes and inherited into PGC-fated cells in embryos.However,the maternal factors regulating the assembly of germ plasm and PGC development remain poorly understood.In this study,we report that the maternal transcription factor Znf706 regulates the assembly of germ plasm factors into a granule-like structure localized perinuclearly in PGC during migration.Maternal and zygotic mutants of znf706 exhibit deficient germ plasm scattering at the early embryonic stage,decreased PGC numbers with some mislocation during PGC migration,and a lower female ratio in adulthood.Notably,the implementation of Znf706 CUT&Tag and RNA-seq on immature oocytes uncovers that Znf706 in stage I oocytes may promote transcription of several mitochondrial genes in addition to other functions.Hence,we propose that Znf706 is implicated in germ plasm assembly and PGC development in zebrafish.展开更多
目的探讨磁共振成像(magnetic resonance imaging,MRI)联合血清γ-氨基丁酸受体相关蛋白2(GABA receptorassociated protein like 2,GABARAPL2)、锌指蛋白706(zinc finger protein 706,ZNF706)与BGCN同族体(within BGCNhomolog,WIBG)对...目的探讨磁共振成像(magnetic resonance imaging,MRI)联合血清γ-氨基丁酸受体相关蛋白2(GABA receptorassociated protein like 2,GABARAPL2)、锌指蛋白706(zinc finger protein 706,ZNF706)与BGCN同族体(within BGCNhomolog,WIBG)对早期类风湿关节炎(rheumatoid arthritis,RA)的诊断价值。方法选取2014年9月至2017年9月于本院就诊的260例RA患者为研究对象,根据病程将入选患者分为早期组(167例)和晚期组(93例),随机选取同期于本院体检的100例健康成人纳入对照组。分析RA患者的MRI征象,比较三组研究对象的血清GABARAPL2、ZNF706和WIBG水平,并采用受试者操作特征曲线的曲线下面积(receiver operating characteristic,AUC)评价其诊断价值。结果早期组和晚期组患者的骨质侵蚀、骨髓水肿和滑膜炎的发生率比较差异均无统计学意义(均P >0.05)。早期组患者血清GABARAPL2、WIBG和ZNF706水平均显著高于晚期组和对照组(均P <0.05);晚期组患者血清GABARAPL2、WIBG和ZNF706水平均显著高于对照组(均P <0.05)。在3个MRI征象中,骨髓水肿对早期RA的诊断价值最高,其次是滑膜炎与骨质侵蚀,三者的灵敏度较高,特异度较低,且三征象联合诊断的价值更高(Youden指数= 0.408)。血清WIBG水平对早期RA的诊断价值最高(AUC=0.708),其次是GABARAPL2(AUC=0.683)与ZNF706(AUC=0.662),三者的灵敏度较低,特异度较高,且三因子联合诊断的价值更高(Youden指数=0.495)。MRI联合血清GABARAPL2、ZNF706与WIBG对早期RA的诊断灵敏度、特异度分别为88.0%、68.9%,诊断价值最高(Youden指数=0.569)。结论 MRI联合血清GABARAPL2、ZNF706与WIBG能显著提高RA的早期诊断水平,值得临床推广应用。展开更多
基金supported by the National Natural Science Foundation of China(31988101 to A.M.)the National Key Research and Development Program of China(2023YFA1800300 to X.W.and 2018YFC1003304 to A.M.)the Yunnan Provincial Science and Technology Project at Southwest United Graduate School(202302A0370011 to A.M.).
文摘The cell fate of primordial germ cell(PGC)in zebrafish is pre-determined by maternally deposited germ plasm,which is packaged into ribonucleoprotein complex in oocytes and inherited into PGC-fated cells in embryos.However,the maternal factors regulating the assembly of germ plasm and PGC development remain poorly understood.In this study,we report that the maternal transcription factor Znf706 regulates the assembly of germ plasm factors into a granule-like structure localized perinuclearly in PGC during migration.Maternal and zygotic mutants of znf706 exhibit deficient germ plasm scattering at the early embryonic stage,decreased PGC numbers with some mislocation during PGC migration,and a lower female ratio in adulthood.Notably,the implementation of Znf706 CUT&Tag and RNA-seq on immature oocytes uncovers that Znf706 in stage I oocytes may promote transcription of several mitochondrial genes in addition to other functions.Hence,we propose that Znf706 is implicated in germ plasm assembly and PGC development in zebrafish.
