Teashirt in cell proliferation: Analysis of tsh mutants in Drosophila melanogaster

 
9783848428502: Teashirt in cell proliferation: Analysis of tsh mutants in Drosophila melanogaster

Here we present evidence that the transcription factor Teashirt (Tsh) has a role in cell proliferation in Drosophila follicle stem cells (FSC), neuroblasts and S2 cells. In ovaries, Tsh and Hedgehog (Hh) are co-expressed in the terminal filament and cap cells. The characterisation of a new tsh mutation causing female sterility allowed us to show that Tsh acts via Hh-mediated signalling pathway to control FSC proliferation. In this tsh background, the hsGal4 driven expression of tsh or hh partially rescues the abnormal phenotype allowing oogenesis progression. Furthermore, tsh overexpression mimics the hh overexpression associated phenotype. In neuroblasts, mutant tsh alleles are unable to exit mitosis. The phenotypes of double mutants with rod or bub1 resemble the tsh single mutant phenotype, suggesting failure to escape mitosis. Finally, tsh depletion in S2 cells mimics the tsh mutant phenotype in neuroblasts. We propose that during oogenesis, tsh affects FSC proliferation mediating Hh expression. In neuroblasts, tsh may also acts through Hh signalling, since expression of interference hedgehog, was severely downregulated in our DNA microarray analysis.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

About the Author :

Dr. Silvia Pimentel has obtained her PhD degree in 2011, here is shown her PhD results. Dr. Rui Gomes (PhD degree in 1994) Professor at Lisbon University (FCUL) works in the fields of Cell Cycle Regulation and Neurosciences. Dr. Laurent Fasano (PhD degree in 1990) CNRS Researcher at the IBDML works in the field of Developmental Biology.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

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Silvia Pimentel; Rui Gomes; Laurent Fasano
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ISBN 10 : 3848428504 ISBN 13 : 9783848428502
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Silvia Pimentel; Rui Gomes; Laurent Fasano
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Silvia Pimentel, Rui Gomes, Laurent Fasano
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Description du livre LAP Lambert Academic Publishing, Germany, 2012. Paperback. État : New. Aufl.. Language: English . Brand New Book ***** Print on Demand *****.Here we present evidence that the transcription factor Teashirt (Tsh) has a role in cell proliferation in Drosophila follicle stem cells (FSC), neuroblasts and S2 cells. In ovaries, Tsh and Hedgehog (Hh) are co-expressed in the terminal filament and cap cells. The characterisation of a new tsh mutation causing female sterility allowed us to show that Tsh acts via Hh-mediated signalling pathway to control FSC proliferation. In this tsh background, the hsGal4 driven expression of tsh or hh partially rescues the abnormal phenotype allowing oogenesis progression. Furthermore, tsh overexpression mimics the hh overexpression associated phenotype. In neuroblasts, mutant tsh alleles are unable to exit mitosis. The phenotypes of double mutants with rod or bub1 resemble the tsh single mutant phenotype, suggesting failure to escape mitosis. Finally, tsh depletion in S2 cells mimics the tsh mutant phenotype in neuroblasts. We propose that during oogenesis, tsh affects FSC proliferation mediating Hh expression. In neuroblasts, tsh may also acts through Hh signalling, since expression of interference hedgehog, was severely downregulated in our DNA microarray analysis. N° de réf. du libraire AAV9783848428502

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Silvia Pimentel
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Description du livre LAP Lambert Academic Publishing. Paperback. État : New. Paperback. 200 pages. Dimensions: 8.7in. x 5.9in. x 0.5in.Here we present evidence that the transcription factor Teashirt (Tsh) has a role in cell proliferation in Drosophila follicle stem cells (FSC), neuroblasts and S2 cells. In ovaries, Tsh and Hedgehog (Hh) are co-expressed in the terminal filament and cap cells. The characterisation of a new tsh mutation causing female sterility allowed us to show that Tsh acts via Hh-mediated signalling pathway to control FSC proliferation. In this tsh background, the hsGal4 driven expression of tsh or hh partially rescues the abnormal phenotype allowing oogenesis progression. Furthermore, tsh overexpression mimics the hh overexpression associated phenotype. In neuroblasts, mutant tsh alleles are unable to exit mitosis. The phenotypes of double mutants with rod or bub1 resemble the tsh single mutant phenotype, suggesting failure to escape mitosis. Finally, tsh depletion in S2 cells mimics the tsh mutant phenotype in neuroblasts. We propose that during oogenesis, tsh affects FSC proliferation mediating Hh expression. In neuroblasts, tsh may also acts through Hh signalling, since expression of interference hedgehog, was severely downregulated in our DNA microarray analysis. This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN. Paperback. N° de réf. du libraire 9783848428502

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