title: Nucleoporin 62-like protein activates canonical Wnt signaling through facilitating the nuclear import of β-catenin in zebrafish.
abstract: Nucleoporin p62 (Nup62) localizes in the central channel of nuclear pore complexes (NPCs) and regulates nuclear pore permeability and nucleocytoplasmic transport. However, the developmental roles of Nup62 in vertebrates remain largely unclear. Zebrafish Nup62-like protein (Nup62l) is a homolog of mammalian Nup62. The nup62l gene is maternally expressed, but its transcripts are ubiquitously distributed during early embryogenesis and enriched in the head, pharynx, and intestine of developing embryos. Activation of the Wnt/β-catenin pathway positively modulates nup62l transcription, while Bmp signaling acts downstream of Wnt/β-catenin signaling to negatively regulate nup62l expression. Overexpression of nup62l dorsalized embryos and enhanced gastrula convergence and extension (CE) movements. In contrast, knockdown of Nup62l led to ventralized embryos, an impediment to CE movements, and defects in specification of midline organ progenitors. Mechanistically, Nup62l acts as an activator of Wnt/β-catenin signaling through interaction with and facilitation of nuclear import of β-catenin-1/2 in zebrafish. Thus, Nup62l regulates dorsoventral patterning, gastrula CE movements, and proper specification of midline organ precursors through mediating the nuclear import of β-catenins in zebrafish.
authors.affiliation: The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Xiaojie
authors.initials: X
authors.lastname: Yang
authors.affiliation: The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Qilin
authors.initials: Q
authors.lastname: Gu
authors.affiliation: School of Basic Medical Sciences, Wuhan University, Wuhan, China.
authors.forename: Li
authors.initials: L
authors.lastname: Lin
authors.affiliation: School of Basic Medical Sciences, Wuhan University, Wuhan, China.
authors.forename: Shaoyang
authors.initials: S
authors.lastname: Li
authors.affiliation: School of Basic Medical Sciences, Wuhan University, Wuhan, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Zhong
authors.affiliation: The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China qli@ihb.ac.cn zbcui@ihb.ac.cn.
authors.forename: Qing
authors.initials: Q
authors.lastname: Li
authors.affiliation: The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China qli@ihb.ac.cn zbcui@ihb.ac.cn.
authors.forename: Zongbin
authors.initials: Z
authors.lastname: Cui
mesh_terms: D021581:Active Transport, Cell Nucleus; D000818:Animals; D001665:Binding Sites; D019521:Body Patterning; D004625:Embryo, Nonmammalian / Q000002:abnormalities / Q000378:metabolism; D018507:Gene Expression Regulation, Developmental; D028861:Nuclear Pore Complex Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D060449:Wnt Signaling Pathway; D015027:Zebrafish / Q000196:embryology* / Q000235:genetics / Q000378:metabolism; D029961:Zebrafish Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D051176:beta Catenin / Q000378:metabolism*
chemical_list: D028861:Nuclear Pore Complex Proteins; C000597854:Nup62l protein, zebrafish; D029961:Zebrafish Proteins; D051176:beta Catenin