Snx5, as a Mind bomb‐binding protein, is expressed in hematopoietic and endothelial precursor cells in zebrafish
Copyright policy )Snx5, as a Mind bomb‐binding protein, is expressed in hematopoietic and endothelial precursor cells in zebrafish
Notch signaling has an evolutionarily conserved function for cell fate determination and stem cell maintenance. Previously, we identified a novel component of the Notch signaling pathway in zebrafish, mind bomb, which encodes an E3 ubiquitin ligase essential for Notch signal activation. Further studies showed that Mind bomb −/− mouse embryos exhibited pan‐Notch phenotypes in various tissues, suggesting that Mind bomb function is conserved in mammals. Therefore we sought to understand the various molecular partners of Mind bomb using yeast two‐hybrid screening. In this search we identified Sorting nexin 5 (Snx5) as a novel interacting partner of Mind bomb. Furthermore we demonstrated that Snx5 colocalizes with Mind bomb in early endosomal compartments, suggesting that Snx5 is important for Mind bomb trafficking. In addition, we identified zebrafish orthologue of Snx5 and showed that snx5 is predominantly expressed in hematopoietic and endothelial precursor cells in zebrafish. We also found defects in hematopoiesis and blood vessel development in snx5 morpholino‐injected embryos. Taken together, we show that Snx5, a novel interacting partner of Mind bomb, may have an essential role for cell fate determination in early development.
- Chonnam National University Korea (Republic of)
- Pohang University of Science and Technology Korea (Republic of)
- Chungnam National University Korea (Republic of)
Mind bomb, Endothelial precursor cells, SORTING NEXINS, ENDOCYTOSIS, Sorting nexin 5, Ubiquitin-Protein Ligases, FATE, Vesicular Transport Proteins, Neovascularization, Physiologic, Hematopoietic precursor cells, endothelial precursor cells, UBIQUITIN LIGASE, Mice, Two-Hybrid System Techniques, hematopoietic precursor cells, Animals, Humans, Immunoprecipitation, WILD-TYPE, Sorting Nexins, Notch signaling, Zebrafish, DELTA, Stem Cells, Endothelial Cells, Zebrafish Proteins, zebrafish, Hematopoietic Stem Cells, notch signaling, GENE, FAMILY, NOTCH, DROSOPHILA, DIFFERENTIATION, sorting nexin 5, FANCONI-ANEMIA, CLOCHE, Carrier Proteins
Mind bomb, Endothelial precursor cells, SORTING NEXINS, ENDOCYTOSIS, Sorting nexin 5, Ubiquitin-Protein Ligases, FATE, Vesicular Transport Proteins, Neovascularization, Physiologic, Hematopoietic precursor cells, endothelial precursor cells, UBIQUITIN LIGASE, Mice, Two-Hybrid System Techniques, hematopoietic precursor cells, Animals, Humans, Immunoprecipitation, WILD-TYPE, Sorting Nexins, Notch signaling, Zebrafish, DELTA, Stem Cells, Endothelial Cells, Zebrafish Proteins, zebrafish, Hematopoietic Stem Cells, notch signaling, GENE, FAMILY, NOTCH, DROSOPHILA, DIFFERENTIATION, sorting nexin 5, FANCONI-ANEMIA, CLOCHE, Carrier Proteins
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