title: Insulin-like growth factor-binding protein-1 (IGFBP-1) in goldfish, Carassius auratus: molecular cloning, tissue expression, and mRNA expression responses to periprandial changes and cadmium exposure.
abstract: In this study, the cDNA encoding insulin-like growth factor-binding protein-1 (IGFBP-1) was cloned from the liver of goldfish (Carassius auratus). The obtained goldfish IGFBP-1 cDNA sequence was 1037 bp in length and had an open reading frame of 789 bp encoding a predicted polypeptide of 262 amino acid residues. IGFBP-1 transcript was detected in all tested central nervous and peripheral tissues. The relatively higher levels of IGFBP-1 mRNA were observed in the liver, gill, kidney, heart, spleen, fat and testis, while the lower levels were found in all different regions of brain, muscle and intestine. In the skin, IGFBP-1 mRNA expression level was extremely low. The IGFBP-1 mRNA expression level in liver was significantly elevated after feeding. With cadmium exposure for 24 h, IGFBP-1 mRNA expression levels in spleen and liver were significantly increased at different cadmium concentrations ranging from 0.5 to 10 ppm. The results in this study provided the data regarding molecular characteristics and expression patterns of IGFBP-1 in goldfish and showed that the expression of IGFBP-1 mRNA might be associated with metabolic status and heavy metal stress and regulated by metabolic factors and cadmium in fish.
authors.affiliation: Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, People's Republic of China. chenwbfish@163.com.
authors.forename: Wenbo
authors.initials: W
authors.lastname: Chen
authors.affiliation: Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, People's Republic of China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Medicine, Huzhou University, Huzhou, 313000, Zhejiang, People's Republic of China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Dong
authors.affiliation: Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, People's Republic of China.
authors.forename: Fangfang
authors.initials: F
authors.lastname: Yan
mesh_terms: D000818:Animals; D002104:Cadmium / Q000633:toxicity*; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000235:genetics; D004435:Eating / Q000235:genetics; D029941:Fish Proteins / Q000235:genetics*; D006054:Goldfish / Q000235:genetics*; D018970:Insulin-Like Growth Factor Binding Protein 1 / Q000235:genetics*; D012333:RNA, Messenger / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D018076:DNA, Complementary; D029941:Fish Proteins; D018970:Insulin-Like Growth Factor Binding Protein 1; D012333:RNA, Messenger; D014874:Water Pollutants, Chemical; D002104:Cadmium
keywords: Cadmium; Carassius auratus; Insulin-like growth factor-binding protein-1; Periprandial change; cDNA cloning; mRNA expression