Frizzled-4 expression during chick kidney development

被引:11
作者
Stark, MR
Rao, MS
Schoenwolf, GC
Yang, GZ
Smith, D
Mauch, TJ
机构
[1] Univ Utah, Sch Med 2R063, Dept Neurobiol & Anat, Salt Lake City, UT 84132 USA
[2] Univ Utah, Sch Med 2R063, Dept Pediat, Salt Lake City, UT 84132 USA
关键词
pronephros; mesonephros; metanephros; in situ hybridization; Pax-2; Lmx-1; Lim; 1/2; Wnt-4; Wnt-11;
D O I
10.1016/S0925-4773(00)00440-8
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Wnts have been implicated in metanephric kidney development. To determine whether Frizzleds, the genes that encode Wnt receptors, are present at early stages of nephrogenesis, we examined the expression of several recently identified Frizzled genes in the chick by in situ hybridization. Here we report the cloning and characterization of chick Frizzled-4 (cFz-4), which we found to be expressed in the developing chick kidney. cFz-4 was first expressed in the pronephros caudal to the third somite at Hamburger and Hamilton stage 10. Its expression increased with maturation, becoming restricted to the newly induced glomeruli and tubules in the mesonephros and metanephros. Within the metanephros, cFz-4 and Wnt-4 expression patterns were similar, whereas Wnt-11 was expressed solely in the tips of the branching ureteric bud, cFz-4 expression was compared with that of known kidney markers. It preceded that of Lmx-1, but was similarly restricted to developing glomeruli and tubules. In contrast, Pax-2 expression and Lim 1/2 antibody labeling occurred in intermediate mesoderm caudal to the fifth somite in the early pronephros, and each persisted in both the tubules and nephric ducts throughout further development. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:121 / 125
页数:5
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