Katarzyna Falenta

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Cell polarization is essential for neuronal development in both the embryonic and postnatal brain. Here, using primary cultures, in vivo postnatal electroporation and conditional genetic ablation, we show that the Ras-like small GTPase RalA and its effector, the exocyst, regulate the morphology and polarized migration of neural progenitors derived from the(More)
During development and after birth neural stem cells in the subventricular zone (SVZ) generate neuroblasts that migrate along the rostral migratory stream (RMS) to populate the olfactory bulb (OB) with neurons. Multiple factors promote neuroblast migration, but the contribution that many of these make to guidance within the intact RMS is not known. In the(More)
The subventricular zone (SVZ) located in the lateral wall of the lateral ventricles plays a fundamental role in adult neurogenesis. In this restricted area of the brain, neural stem cells proliferate and constantly generate neuroblasts that migrate tangentially in chains along the rostral migratory stream (RMS) to reach the olfactory bulb (OB). Once in the(More)
We have used a direct in vivo imaging strategy to investigate the role of c-Met signalling and kinase activity during the immune response to wounding. Our assay utilizes the optical translucent properties of the zebrafish embryo and demonstrates the versatility of microscopy-based approach to the screening of compounds for inhibition of the wounding(More)
In a recent paper in Development, Jin et al. (Jin et al., 2009) reported that, in zebrafish embryos, the definitive haematopoietic cells of the trunk and tail have different differentiation outputs; that is, whereas cells in the tail can give rise to erythrocytes, those remaining in the trunk cannot. This finding that definitive erythropoiesis is absent in(More)
The endocannabinoid (eCB) system consists of several endogenous lipids, their target CB1 and CB2 receptors and enzymes responsible for their synthesis and degradation. The most abundant eCB in the central nervous system (CNS), 2-arachidonoyl glycerol (2-AG), triggers a broad range of signalling events by acting on CB1, the most abundant G protein-coupled(More)
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