title: siRNA specific to Pdx-1 disturbed the formation of the islet in early zebrafish embryos.
abstract: Pdx-1, an important transcription factor highlighting in the early pancreatic development, islet functions and pancreatic disorders, needs to be more investigated in zebrafish, and siRNA is still seldom applied in zebrafish embryo-related research. Our aim was to explore the role of pdx-1 in pancreatic development of zebrafish embryos by using siRNA approach. Microinjection, reverse transcriptase-PCR (RT-PCR), in situ hybridization and immunofluorescent staining were used in this research, and the morphology of the islet in normal zebrafish embryos, and in those treated with the siRNA specific to pdx-1 (siPDX-1) or siGFP was observed and compared. The expression of pdx-1 was detected in the stages of 1-cell, 2-cell, 4-cell, 8-cell, 16-cell, 16-hour by RT-PCT. The in situ hybridization and immunofluorescent staining results showed that siPDX-1 disturbed the formation of the islet in zebrafish embryos. Pdx-1 played multiple roles in maintaining the phenotype of the islet during embryogenesis in zebrafish.
authors.affiliation: Department of Histology & Embryology, School of Preclinical Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
authors.forename: Shen
authors.initials: S
authors.lastname: Chen
authors.forename: Jintao
authors.initials: J
authors.lastname: Huang
authors.forename: Guangming
authors.initials: G
authors.lastname: Yuan
mesh_terms: D000818:Animals; D004625:Embryo, Nonmammalian; D018398:Homeodomain Proteins / Q000235:genetics / Q000378:metabolism*; D007515:Islets of Langerhans / Q000166:cytology / Q000196:embryology* / Q000378:metabolism; D034622:RNA Interference; D034741:RNA, Small Interfering / Q000235:genetics*; D015534:Trans-Activators / Q000235:genetics / Q000378:metabolism*; D015027:Zebrafish
chemical_list: D018398:Homeodomain Proteins; D034741:RNA, Small Interfering; D015534:Trans-Activators; C084010:pancreatic and duodenal homeobox 1 protein