title: C1q-like factor, a target of miR-430, regulates primordial germ cell development in early embryos of Carassius auratus.
abstract: C1q-like is a significant maternal factor of TNF/C1q super-family, and the abundant protein has been observed in both mature eggs of Carassius auratus and Carassius auratus gibelio, but its biological function in early embryo development has remained unclear. In this study, we firstly revealed a high level of maternal C1q-like transcript existence only in mature eggs of Carassius auratus, whereas no any maternal C1q-like transcript was observed in that of Carassius auratus gibelio. During embryonic development, the C1q-like zygotic expression begins around cardiopalmus stage in embryos of both Carassius auratus and Carassius auratus gibelio. Then, we examined the biological role of C1q-like by morpholino-mediated knockdown in early embryo development. Knockdown of CaOC1q resulted in a significant reduction of primordial germ cells (PGCs) in Carassius auratus, as shown by whole mount in situ hybridization with vasa-specific RNA probe, fluorescence immunostaining of vasa protein, and GFP imaging of the GFP-nanos1-3'UTR mRNA reporter. In vitro and in vivo evidence indicated that a microRNA, miR-430 could repress the C1q-like expression and PGC development. These data suggest that C1q-like should be a direct target of miR-430 and play an essential role in PGC development of Carassius auratus.
authors.affiliation: 1. College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Mei
authors.affiliation: 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Hua-Mei
authors.initials: HM
authors.lastname: Yue
authors.affiliation: 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Li
authors.affiliation: 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.affiliation: 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Jian-Xiang
authors.initials: JX
authors.lastname: Zhong
authors.affiliation: 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Dan
authors.affiliation: 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Li
authors.initials: L
authors.lastname: Zhou
authors.affiliation: 1. College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China. ; 2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
authors.forename: Jian-Fang
authors.initials: JF
authors.lastname: Gui
mesh_terms: D020413:3' Untranslated Regions; D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D017931:DNA Primers; D055785:Gene Knockdown Techniques; D005854:Germ Cells / Q000166:cytology*; D006054:Goldfish / Q000196:embryology*; D049452:Green Fluorescent Proteins / Q000235:genetics; D017403:In Situ Hybridization; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism*; D035683:MicroRNAs / Q000235:genetics / Q000378:metabolism*; D011951:Receptors, Complement / Q000235:genetics / Q000378:metabolism*
chemical_list: D020413:3' Untranslated Regions; D017931:DNA Primers; D008562:Membrane Glycoproteins; D035683:MicroRNAs; D011951:Receptors, Complement; C032402:complement 1q receptor; D049452:Green Fluorescent Proteins
keywords: C1q-like; early embryogenesis; knockdown; miR-430; microRNA; primordial germ cell