0000000000472191

AUTHOR

Johannes J. Letzkus

0000-0001-5678-3030

showing 2 related works from this author

A new culturing strategy optimises Drosophila primary cell cultures for structural and functional analyses

2004

Abstract Neurons in primary cell cultures provide important experimental possibilities complementing or substituting those in the nervous system. However, Drosophila primary cell cultures have unfortunate limitations: they lack either a range of naturally occurring cell types, or of mature physiological properties. Here, we demonstrate a strategy which supports both aspects integrated in one culture: Initial culturing in conventional serum-supplemented Schneider's medium (SM 20K ) guarantees acquisition of all properties known from 30 years of work on cell type-specific differentiation in this medium. Through subsequent shift to newly developed active Schneider's medium (SM active ), neuron…

Nervous systemSerotoninCell typePlasticityCellCell Culture TechniquesBiologySynaptic TransmissionFM dyeschemistry.chemical_compoundmedicineAnimalsSynapse formationNeurotransmitterDrosophilaMolecular Biologygamma-Aminobutyric AcidNeuronsCell lineageNeural stem cellsCell DifferentiationAnatomyCell BiologySynaptic activitybiology.organism_classificationCell culturesNeural stem cellCulture MediaCell biologymedicine.anatomical_structurechemistryCell cultureSynaptic plasticityDrosophilaAction potentialsDevelopmental BiologyDevelopmental Biology
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In developing Drosophila neurones the production of γ-amino butyric acid is tightly regulated downstream of glutamate decarboxylase translation and c…

2003

The presented work pioneers the embryonic Drosophila CNS for studies of the developmental regulation and function of gamma-amino butyric acid (GABA). We describe for the first time the developmental pattern of GABA in Drosophila and address underlying regulatory mechanisms. Surprisingly, and in contrast to vertebrates, detectable levels of GABA occur late during Drosophila neurogenesis, after essential neuronal proliferation and growth have taken place and synaptogenesis has been initiated. This timeline is almost unchanged when the GABA synthetase glutamate decarboxylase (GAD) is strongly misexpressed throughout the nervous system suggesting a tight post-translational regulation of GABA ex…

Regulation of gene expressionNervous systemNeurogenesisGlutamate decarboxylaseSynaptogenesisTranslation (biology)Biologybiology.organism_classificationBiochemistryCellular and Molecular Neurosciencemedicine.anatomical_structureBiochemistrymedicineNeuronDrosophila melanogasterJournal of Neurochemistry
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