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Expression analysis of IGFBP ‐ rP10 , IGFBP ‐ like and Mig30 in early Xenopus development
Author(s) -
Kuerner KlausMichael,
Steinbeisser Herbert
Publication year - 2006
Publication title -
developmental dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.634
H-Index - 141
eISSN - 1097-0177
pISSN - 1058-8388
DOI - 10.1002/dvdy.20910
Subject(s) - neurulation , biology , gastrulation , notochord , xenopus , convergent extension , neural tube , neural plate , microbiology and biotechnology , somite , neurula , mesoderm , floor plate , embryo , embryogenesis , morpholino , genetics , anatomy , zebrafish , gene , embryonic stem cell
To date, five members of the insulin‐like growth factor‐binding protein (IGFBP) superfamily have been described in Xenopus laevis . Here, we report the isolation of two new IGFBPs : xIGFBP ‐ rP10 , and xIGFBP ‐ like . The proteins share the same domain architecture, and together with Mig30, form a subgroup within the IGFBP superfamily. Temporal expression analysis shows that they are expressed differentially during early development. xIGFBP ‐ rP10 is continuously expressed, whereas Mig30 expression peaks during gastrulation. IGFBP ‐ like is expressed from neurulation onward. The three genes have characteristic spatial expression domains, which overlap in some regions. Both xIGFBP ‐ rP10 and Mig30 are expressed on the dorsal side of the embryo during gastrulation. Later, xIGFBP ‐ rP10 is expressed in the notochord, the floor plate, the somites, and the fin. xIGFBP ‐ like expression is seen primarily in the developing central nervous system and overlaps with Mig30 expression at the end of neurulation in the developing somites and in tail bud stages in the eyes. Developmental Dynamics 235:2861–2867, 2006. © 2006 Wiley‐Liss, Inc.