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Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma [RIP-seq]

ABSTRACT: Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma [RIP-seq]

PROVIDER: PRJNA996918 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25374592_1.fastq.gz	Fastqsanger.gz
	SRR25374592_2.fastq.gz	Fastqsanger.gz
	SRR25374593_1.fastq.gz	Fastqsanger.gz
	SRR25374593_2.fastq.gz	Fastqsanger.gz
	SRR25374594_1.fastq.gz	Fastqsanger.gz

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Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma [RIP-seq]

Project description:Despite the advance in diagnosis and treatment, the prognosis of osteosarcoma patients remains unsatisfied. Therefore, it is imperative to identify novel therapeutic targets for osteosarcoma. Through RNA sequencing (RNA-seq) combined with functional screening, N4-acetylcytidine (ac4C) acetyltransferase 10 (NAT10) was identified as a candidate therapeutic target in osteosarcoma. Upregulated NAT10 correlated with poor prognosis in osteosarcoma patients and NAT10 knockout drastically inhibited cell proliferation and metastasis in vitro and in vivo. NAT10 enhanced mRNA stability and translation efficiency of activating transcription factor 4 (ATF4) through ac4C modification. ATF4 induced transcription of asparagine synthetase (ASNS), which catalyzes asparagine (Asn) biosynthesis. Asn promote protein and nucleotide synthesis, facilitating osteosarcoma progression. Overexpression of ATF4, ASNS or supplementation of asparagine rescue the tumor inhibitory effect of NAT10 knockout.

2024-08-09 | GSE237840 | GEO

Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma [mRNA-seq]

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Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma

Project description:Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma

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C12orf43-NAT10 Enhance breast cancer proliferation and chemotherapy resistance via BMI1-P53 signaling axis in a N4-acetylcytidine-dependent manner

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Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma [mRNA-seq]

Project description:Function and Mechanism of NAT10-mediated N4-acetylcytidine modification in osteosarcoma [mRNA-seq]

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ac4C RIP-seq analysis of AGS cells upon NAT10 knockout.

Project description:N4-acetylcytidine (ac4C), a conserved chemical modification in eukaryotic prokaryotes that is catalyzed by the N-acetyltransferase 10 (NAT10) enzyme, plays a crucial role in promoting mRNA stability and translation. However, the biological function and mechanisms of NAT10-mediated ac4C in human cancer were poorly defined. In order to investigate the regulatory mechanism of NAT10 in gastric cancer, we performed ac4C RIP-seq(acRIP-seq) analysis in AGS cells with NAT10 knockout compared with control in two repeats.

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NAT10-mediated N4-acetylcytidine of RNA Contributes to Post-transcriptional Regulation of Mouse Oocyte Maturation In Vitro

Project description:N4-acetylcytidine (ac4C), a newly identified epigenetic modification within mRNAs, has been characterized as a crucial regulator of mRNA stability and translation efficiency. And NAT10 is the only known RNA acetyltransferase. In our study, we documented the down-regulated expression of both ac4C and NAT10 during meiotic maturation of mouse oocytes. NAT10 knockdown resulted in ac4C reduction and impaired mouse oocyte maturation in vitro. These results indicated that NAT10-mediated ac4C modification plays a critical regulatory role in oocyte meiotic maturation. We further performed high-throughput sequencing with NAT10-overexpressed HEK293T cells and NAT10-binding transcripts to investigate the genes modulated by NAT10-mediated ac4C modification.

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N4-acetylcytidine of Nop2 mRNA is Required to the Transition of Morula-to-Blastocyst

Project description:N-acetyltransferase 10 (NAT10)-mediated N4-acetylcytidine (ac4C) modification is crucial for mRNA stability and translation efficiency, yet the underlying function in mammalian preimplantation embryos remains unclear.

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Project description:N4-acetylcytidine (ac4C) is an evolutionarily conserved RNA modification that is deposited on diverse RNAs by N-acetyltransferase 10 (NAT10), a protein with high biological significance for aging and cancer. Here, we performed a comprehensive survey of ac4C using metabolic labeling, sodium cyanoborohydride chemical treatment coupled to next generation sequencing (NGS) and ac4C antibody-based cell and molecular biology techniques. Our NGS analysis confirms robust ac4C modification of rRNA and specific tRNA species in a NAT10-dependent manner, but suggests low or spurious ac4C acetylation in mRNA. Analysis of RNA-seq data also revealed an induction of inflammatory responses as well as mutagenesis at transcriptionally active sites in NAT10-KO cells. This finding led us to further explore the role of NAT10 in R-loops, which have recently been shown to induce APOBEC3B-mediated mutagenesis. Our analysis revealed that R-loops are modified with ac4C in a NAT10-dependent manner. Furthermore, NAT10 restrains the levels of R-loops at a subset of differentially expressed genes in a manner dependent on its catalytic activity. Together with cellular biology data showing ac4C containing RNA in endosomal structures, we propose that increased levels of ac4C-unmodified RNAs, likely derived from R-loops, in endosomal structures induce inflammatory responses.

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