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Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis [Xenopus laevis]

ABSTRACT: Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis [Xenopus laevis]

PROVIDER: PRJNA870171 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21096000_1.fastq.gz	Fastqsanger.gz
	SRR21096000_2.fastq.gz	Fastqsanger.gz
	SRR21096001_1.fastq.gz	Fastqsanger.gz
	SRR21096001_2.fastq.gz	Fastqsanger.gz
	SRR21096002_1.fastq.gz	Fastqsanger.gz

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Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis [Acipenser ruthenus]

Project description:In this study we analyzed the spatial and temporal localization of maternal transcripts during oogenesis in Acipenser ruthenus. The occurrence of transcript asymmetry in A. ruthenus has been described at a global level only in matured eggs. However not much is known about the asymmetry during oogenesis. In this study we assessed the temporal establishment of the transcript localization at a global level for A. ruthenus. We were able to determine that there are many transcripts that show temporal variability in the establishment of their localization. We observed an early, predefined and also late pathways for both the vegetally and animally localized transcripts. Additionally, we showed that some maternal transcripts are dynamic during oogenesis with degradation and de novo production being observed. Our study showed that in additional to spatial orientation to the transcripts, there is a strong temporal factor. The discovery of these new temporal profiles should help to better understand the driving forces during embryogenesis.

2022-08-23 | GSE211412 | GEO

Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis [Acipenser ruthenus]

Project description:Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis [Acipenser ruthenus]

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Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis [Xenopus laevis]

Project description:In this study we analyzed the spatial and temporal localization of maternal transcripts during oogenesis in Xenopus laevis. The occurrence of transcript asymmetry in X. laevis has been described at a global level only in matured eggs, while the establishment of the asymmetry during oogenesis has been described only for a few transcripts. In this model it was discerned that there exist three pathways (early, intermediate, late) for the establishment of the vegetal gradient, while for the animal gradient not much is known for its production. In this study we assessed the temporal establishment of the transcript localization at a global level for Xenopus laevis. We were able to determine that there are many transcripts that show temporal variability in the establishment of their localization. We observed the previously described early, intermediate (predefined) and also late pathways but found more member transcripts within these groups. We also described, perhaps for the first time, an early, intermediate (predefined) and late pathway for the animal genes as well. Additionally, we showed that some maternal transcripts are dynamic during oogenesis with degradation and de novo production being observed. Our study showed that in additional to spatial orientation to the transcripts, there is a strong temporal factor. The discovery of these new temporal profiles should help to better understand the driving forces during embryogenesis.

2022-08-23 | GSE211415 | GEO

Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis

Project description:Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis

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Acipenser ruthenus

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Comparison of RNA localization during oogenesis within <i>Acipenser ruthenus</i> and <i>Xenopus laevis</i>.

Project description:The oocyte is a unique cell, from which develops a complex organism comprising of germ layers, tissues and organs. In some vertebrate species it is known that the asymmetrical localization of biomolecules within the oocyte is what drives the spatial differentiation of the daughter cells required for embryogenesis. This asymmetry is first established to produce an animal-vegetal (A-V) axis which reflects the future specification of the ectoderm, mesoderm, and endoderm layers. Several pathways for localization of vegetal maternal transcripts have already been described using a few animal models. However, there is limited information about transcripts that are localized to the animal pole, even though there is accumulating evidence indicating its active establishment. Here, we performed comparative TOMO-Seq analysis on two holoblastic cleavage models: Xenopus laevis and Acipenser ruthenus oocytes during oogenesis. We found that there were many transcripts that have a temporal preference for the establishment of localization. In both models, we observed vegetal transcript gradients that were established during either the early or late oogenesis stages and transcripts that started their localization during the early stages but became more pronounced during the later stages. We found that some animal gradients were already established during the early stages, however the majority were formed during the later stages of oogenesis. Some of these temporally localized transcripts were conserved between the models, while others were species specific. Additionally, temporal de novo transcription and also degradation of transcripts within the oocyte were observed, pointing to an active remodeling of the maternal RNA pool.

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Comparison of RNA localization during oogenesis within Acipenser ruthenus and Xenopus laevis

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2022-08-23 | GSE211416 | GEO

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