Analysis of pancreatic development in living transgenic zebrafish embryos

被引:90
作者
Huang, HG
Vogel, SS
Liu, NG
Melton, DA
Lin, S [1 ]
机构
[1] Med Coll Georgia, Inst Mol Med & Genet, Augusta, GA 30912 USA
[2] Harvard Univ, Dept Mol & Cellular Biol, Cambridge, MA 02138 USA
[3] Harvard Univ, Howard Hughes Med Inst, Cambridge, MA 02138 USA
关键词
zebrafish; pancreas; Pdx-1; insulin; transgenic;
D O I
10.1016/S0303-7207(01)00408-7
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Using DNA constructs containing regulatory sequences of the zebrafish Pdx-1 and insulin genes, germline transgenic zebrafish expressing the green fluorescent protein (GFP) reporter gene in the pancreas were generated. For both constructs, the GFP expression patterns in transgenic embryos were consistent with the mRNA expression patterns detected by RNA in situ hybridization. A deletion promoter analysis revealed that positive and negative cis-acting elements were involved in regulation of insulin gene expression. Three-dimensional reconstructions imaged from living embryos using two-photon laser-scanning microscopy (TPLSM) demonstrated that the zebrafish pancreas is formed from a single dorsal pancreatic cell mass. This is in contrast to mammals where the pancreas derives from both dorsal and ventral anlage. These transgenic fish should be useful for in vivo studies of factors involved in specifying and regulating pancreatic development and function. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:117 / 124
页数:8
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