期刊
GENE EXPRESSION PATTERNS
卷 9, 期 3, 页码 138-143出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.gep.2008.12.001
关键词
IMP; dIMP; ZBP1; Vg1RBP; IGF-II; beta-Actin; CNS; PNS; Sensory organs; Chordotonal organ; External sensory organ; Scolopale cell; Sheath cell; Drosophila; RNA-binding protein
资金
- Danish Natural Science Research Council
- Lundbeck Foundation
Drosophila IMP (dIMP) is related to the vertebrate RNA-binding proteins IMP1-3, ZBP1, Vg1RBP and CRD-BP, which are involved in RNA regulatory processes such as translational repression, localization and stabilization. The proteins are expressed in many fetal tissues, including the developing nervous system, and IMP up-regulation in solid tumors correlates with a high metastatic potential and poor prognosis. In this study, we used immunohistochemistry and live-imaging of an endogenous promoter-driven GFP-dIMP fusion protein to reveal the expression pattern of dIMP protein throughout embryogenesis. In the cellular blastoderm, immunoreactivity was seen in the entire cell-layer, where it was localized apically to the nucleus, and in the pole cells. Later, the GFP-dIMP fusion protein appeared in the developing central nervous system, both in the brain and in the ventral nerve cord. In the peripheral nervous system, immunoreactivity was detected in both neurons and accessory cells of chordotonal and external sensory organs. (C) 2008 Elsevier B.V. All rights reserved.
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