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Full-Text Articles in Life Sciences
Translation Control Tunes Drosophila Oogenesis, Elliot T. Martin
Translation Control Tunes Drosophila Oogenesis, Elliot T. Martin
Legacy Theses & Dissertations (2009 - 2024)
The decision of a stem cell to either self-renew or differentiate is controlled by specific cellularpathways that can act at the level of transcription, translation, or post-translation. To study the regulation of these pathways in-vivo, I have used the female Drosophila germline as a model system. Each of the steps from germline stem cell (GSC) to egg require changes in cellular pathways. These changes can occur at the level of transcription, post-transciption, translation, or post-translation . Decades of research has elucidated many of the changes to gene that occur during oogenesis, however, many players in this process still remain mysterious. …
Rna Modification Landscape And Its Contribution To Egg Production, Ian Thomas Rapisarda
Rna Modification Landscape And Its Contribution To Egg Production, Ian Thomas Rapisarda
Legacy Theses & Dissertations (2009 - 2024)
Germline stem cells differentiate into mature egg or sperm cells that go through the process of fertilization which gives rise to all sexually reproducing organisms. During this process of differentiation, germ cells undergo a switch from mitosis to meiosis that allows for proper development and specification of the future gamete. The mechanisms that facilitate this shift from mitosis to meiosis, however, are not well understood. To gain insight into this process, we used Drosophila oogenesis as our model. To identify what RNA modifications are present during oogenesis we genetically enriched for each stage of development and performed mass spectrometry. We …
Launching The Next Generation : Transcriptional Regulation During Oogenesis, Alicia K. Mccarthy
Launching The Next Generation : Transcriptional Regulation During Oogenesis, Alicia K. Mccarthy
Legacy Theses & Dissertations (2009 - 2024)
Germ cells give rise to gametes and link generations by passing genetic information from parent to offspring. Gametes arise from, in many sexually reproducing organisms, germline stem cells (GSCs) which are set aside early during development. GSCs have an amazing capacity to undergo self-renewal to give rise to a pool of undifferentiated cells, while also differentiating to generate specialized germ cells such as haploid gametes. Upon female GSC differentiation, mitotically dividing germ cells can initiate meiosis, and mature within a follicle. During maturation, the specified oocyte is provided with a trust fund of RNAs and proteins for the next generation …
Regulated Transcriptional Silencing Promotes Germline Stem Cell Differentiation In Drosophila Melanogaster, Pooja Flora
Regulated Transcriptional Silencing Promotes Germline Stem Cell Differentiation In Drosophila Melanogaster, Pooja Flora
Legacy Theses & Dissertations (2009 - 2024)
Germ cells are the only cell in an organism that have the capacity to give rise to a new organism and are passed from one generation to the next. Therefore, to maintain this unique ability of totipotency and immortality, germ cells execute specific functions, such as, repression of a somatic program and contour a germ line-specific pre- and post-transcriptional gene regulatory landscape. In many sexually reproducing organisms, germ cells are formed during the earliest stages of embryogenesis and undergoes several stages of development to eventually get encapsulated by the somatic cells of the gonad. Once, in the gonad, the germ …
Chromatin-Signaling Axis Orchestrates The Formation Of Germline Stem Cell Differentiation Niche In Drosophila, Maitreyi Upadhyay
Chromatin-Signaling Axis Orchestrates The Formation Of Germline Stem Cell Differentiation Niche In Drosophila, Maitreyi Upadhyay
Legacy Theses & Dissertations (2009 - 2024)
Stem cells have the unique capability of self-renewing into stem cells and differentiating into several terminal cell types. Loss of either of these processes can lead to aging, progression towards degenerative diseases and cancers. Insight into how self-renewal and differentiation are regulated will have tremendous therapeutic impact. Drosophila is an excellent model system for stem cell study due to the availability of various mutants, markers and RNAi technology. In order to study stem cell biology, we use female Drosophila gonads, whose stem cell population – the germline stem cells (GSCs) gives rise to gametes.
The Postsynaptic Regulation Of Synaptic Strength In Drosophila, Daniel Michael Gertner
The Postsynaptic Regulation Of Synaptic Strength In Drosophila, Daniel Michael Gertner
Legacy Theses & Dissertations (2009 - 2024)
Postsynaptic Ca2+ plays an important role in synaptic homeostasis and synaptic plasticity. Postsynaptic Ca2+ signals have been shown to regulate synaptic transmission at the Drosophila larval neuromuscular junction (NMJ), however, these signals have not been well characterized. This will explore how these signals regulate synaptic strength and what channels are involved. In previous lab experiments Ca2+ transients were observed during evoked and spontaneous release (Desai and Lnenicka, 2011). It was further demonstrated that a reduction in synaptic strength occurs following synaptic stimulation. It was hypothesized that the increase in postsynaptic Ca2+ following synaptic stimulation activates the gCS and causes a …