@article{WilleSchuemannKreutzeretal.2015, author = {Wille, Michael and Sch{\"u}mann, Antje and Kreutzer, Michael and Glocker, Michael O and Wree, Andreas and Mutzbauer, Grit and Schmitt, Oliver}, title = {The proteome profiles of the olfactory bulb of juvenile, adult and aged rats - an ontogenetic study}, series = {Proteome Science}, volume = {13}, journal = {Proteome Science}, number = {8}, doi = {10.1186/s12953-014-0058-x}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-144073}, year = {2015}, abstract = {Background: In this study, we searched for proteins that change their expression in the olfactory bulb (oB) of rats during ontogenesis. Up to now, protein expression differences in the developing animal are not fully understood. Our investigation focused on the question whether specific proteins exist which are only expressed during different development stages. This might lead to a better characterization of the microenvironment and to a better determination of factors and candidates that influence the differentiation of neuronal progenitor cells. Results: After analyzing the samples by two-dimensional polyacrylamide gel electrophoresis (2DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS), it could be shown that the number of expressed proteins differs depending on the developmental stages. Especially members of the functional classes, like proteins of biosynthesis, regulatory proteins and structural proteins, show the highest differential expression in the stages of development analyzed. Conclusion: In this study, quantitative changes in the expression of proteins in the oB at different developmental stages (postnatal days (P) 7, 90 and 637) could be observed. Furthermore, the expression of many proteins was found at specific developmental stages. It was possible to identify these proteins which are involved in processes like support of cell migration and differentiation.}, language = {en} } @article{WilleSchuemannWreeetal.2015, author = {Wille, Michael and Sch{\"u}mann, Antje and Wree, Andreas and Kreutzer, Michael and Glocker, Michael O. and Mutzbauer, Grit and Schmitt, Oliver}, title = {The Proteome Profiles of the Cerebellum of Juvenile, Adult and Aged Rats-An Ontogenetic Study}, series = {International Journal of Molecular Sciences}, volume = {16}, journal = {International Journal of Molecular Sciences}, doi = {10.3390/ijms160921454}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-151347}, pages = {21454 -- 21485}, year = {2015}, abstract = {In this study, we searched for proteins that change their expression in the cerebellum (Ce) of rats during ontogenesis. This study focuses on the question of whether specific proteins exist which are differentially expressed with regard to postnatal stages of development. A better characterization of the microenvironment and its development may result from these study findings. A differential two-dimensional polyacrylamide gel electrophoresis (2DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analysis of the samples revealed that the number of proteins of the functional classes differed depending on the developmental stages. Especially members of the functional classes of biosynthesis, regulatory proteins, chaperones and structural proteins show the highest differential expression within the analyzed stages of development. Therefore, members of these functional protein groups seem to be involved in the development and differentiation of the Ce within the analyzed development stages. In this study, changes in the expression of proteins in the Ce at different postnatal developmental stages (postnatal days (P) 7, 90, and 637) could be observed. At the same time, an identification of proteins which are involved in cell migration and differentiation was possible. Especially proteins involved in processes of the biosynthesis and regulation, the dynamic organization of the cytoskeleton as well as chaperones showed a high amount of differentially expressed proteins between the analyzed dates.}, language = {en} } @article{AmmarThahoulyHanaueretal.2015, author = {Ammar, Mohamed Raafet and Thahouly, Tamou and Hanauer, Andr{\´e} and Stegner, David and Nieswandt, Bernhard and Vitale, Nicolas}, title = {PLD1 participates in BDNF-induced signalling in cortical neurons}, series = {Scientific Reports}, volume = {5}, journal = {Scientific Reports}, number = {14778}, doi = {10.1038/srep14778}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-139962}, year = {2015}, abstract = {The brain-derived neurotrophic factor BDNF plays a critical role in neuronal development and the induction of L-LTP at glutamatergic synapses in several brain regions. However, the cellular and molecular mechanisms underlying these BDNF effects have not been firmly established. Using in vitro cultures of cortical neurons from knockout mice for Pld1 and Rsk2, BDNF was observed to induce a rapid RSK2-dependent activation of PLD and to stimulate BDNF ERK1/2-CREB and mTor-S6K signalling pathways, but these effects were greatly reduced in Pld1\(^{-/-}\) neurons. Furthermore, phospho-CREB did not accumulate in the nucleus, whereas overexpression of PLD1 amplified the BDNF-dependent nuclear recruitment of phospho-ERK1/2 and phospho-CREB. This BDNF retrograde signalling was prevented in cells silenced for the scaffolding protein PEA15, a protein which complexes with PLD1, ERK1/2, and RSK2 after BDNF treatment. Finally PLD1, ERK1/2, and RSK2 partially colocalized on endosomal structures, suggesting that these proteins are part of the molecular module responsible for BDNF signalling in cortical neurons.}, language = {en} }