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A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions [mutants]

ABSTRACT: A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions [mutants]

PROVIDER: PRJNA860632 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20334616.fastq.gz	Fastqsanger.gz
	SRR20334617.fastq.gz	Fastqsanger.gz
	SRR20334618.fastq.gz	Fastqsanger.gz
	SRR20334619.fastq.gz	Fastqsanger.gz
	SRR20334620.fastq.gz	Fastqsanger.gz

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A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions [mutants]

Project description:Argonaute (AGO) proteins associate with small RNAs to direct their effector function on complementary transcripts. The nematode C. elegans contains an expanded family of 19 functional AGO proteins, many of which have not been fully characterized. In this work we systematically analyzed every C. elegans AGO, using CRISPR-Cas9 genome editing to introduce GFP::3xFLAG tags. We have characterized the expression patterns of each AGO throughout development, identified small RNA binding complements, and determined the effects of ago loss on small RNA populations and developmental phenotypes. Our analysis indicates stratification of subsets of AGOs into distinct regulatory modules, and integration of our data led us to uncover novel stress-induced fertility and pathogen response phenotypes due to ago loss.

2022-07-22 | GSE208701 | GEO

A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions [Argonaute IP]

Project description:A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions [Argonaute IP]

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A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions [Argonaute IP]

2022-07-22 | GSE208700 | GEO

A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions

Project description:A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions

| PRJNA860627 | ENA

A comprehensive survey of <i>C. elegans</i> argonaute proteins reveals organism-wide gene regulatory networks and functions.

Project description:Argonaute (AGO) proteins associate with small RNAs to direct their effector function on complementary transcripts. The nematode Caenorhabditis elegans contains an expanded family of 19 functional AGO proteins, many of which have not been fully characterized. In this work, we systematically analyzed every C. elegans AGO using CRISPR-Cas9 genome editing to introduce GFP::3xFLAG tags. We have characterized the expression patterns of each AGO throughout development, identified small RNA binding complements, and determined the effects of ago loss on small RNA populations and developmental phenotypes. Our analysis indicates stratification of subsets of AGOs into distinct regulatory modules, and integration of our data led us to uncover novel stress-induced fertility and pathogen response phenotypes due to ago loss.

| S-EPMC10101689 | biostudies-literature

A Comprehensive Survey of C. elegans Argonaute Proteins Reveals Organism-wide Gene Regulatory Networks and Functions

Project description:This SuperSeries is composed of the SubSeries listed below.

2022-07-22 | GSE208702 | GEO

Argonaute proteins couple chromatin silencing to alternative splicing

Project description:This SuperSeries is composed of the following subset Series: GSE39746: Argonaute proteins couple chromatin silencing to alternative splicing (exon array) GSE39748: Argonaute proteins couple chromatin silencing to alternative splicing (RNA IP-Seq) Refer to individual Series

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Comprehensive discovery of endogenous Argonaute binding sites in C. elegans

Project description:Comprehensive discovery of endogenous Argonaute binding sites in C. elegans

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Quantitative functions of Argonaute proteins in mammalian development.

Project description:Argonaute proteins (Ago1-4) are essential components of the microRNA-induced silencing complex and play important roles in both microRNA biogenesis and function. Although Ago2 is the only one with the slicer activity, it is not clear whether the slicer activity is a universally critical determinant for Ago2's function in mammals. Furthermore, functional specificities associated with different Argonautes remain elusive. Here we report that microRNAs are randomly sorted to individual Argonautes in mammals, independent of the slicer activity. When both Ago1 and Ago2, but not either Ago1 or Ago2 alone, are ablated in the skin, the global expression of microRNAs is significantly compromised and it causes severe defects in skin morphogenesis. Surprisingly, Ago3 is able to load microRNAs efficiently in the absence of Ago1 and Ago2, despite a significant loss of global microRNA expression. Quantitative analyses reveal that Ago2 interacts with a majority of microRNAs (60%) in the skin, compared with Ago1 (30%) and Ago3 (<10%). This distribution is highly correlated with the abundance of each Argonaute, as quantified by shotgun proteomics. The quantitative correlation between Argonautes and their associated microRNAs is conserved in human cells. Finally, we measure the absolute expression of Argonaute proteins and determine that their copy number is ~1.4 × 10(5) to 1.7 × 10(5) molecules per cell. Together, our results reveal a quantitative picture for microRNA activity in mammals.

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C. elegans PPM-2 regulates small RNA function by stabilizing Argonaute proteins

Project description:Argonaute proteins associate with small non-coding RNAs such as microRNAs, piRNAs and siRNAs to regulate gene expression required for cell proliferation and differentiation. Thse Argonaute proteins are the major components of effector complexes of non-coding RNA pathways. In C. elegans, we identified PPM-2, a Mg2+/Mn2+-dependent serine/threonine phosphatase, as a new regulator of the small RNA pathways in C. elegans. We demonstrate that PPM-2 is involved in the regulation of the let-7 microRNA family but also in the regulation of nuclear RNAi as well as it contributes to the expression of piRNAs. The loss of ppm-2 affects the expression level of Type 1 piRNAs and the stability of ALG-1, PRG-1 and NRDE-3 Argonaute proteins by sending them to the proteasomal degradation pathway. Altogether, our findings suggest that PPM-2 is regulating the function of small non-coding RNA pathways by preventing Argonaute proteins to be degraded via the proteasomal pathway.

2021-08-01 | GSE136462 | GEO

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