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Coronavirus replication is regulated by both host and viral RNA N6–methyladenosine modifications

ABSTRACT: Coronavirus replication is regulated by both host and viral RNA N6–methyladenosine modifications

PROVIDER: PRJNA634377 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11828564.fastq.gz	Fastqsanger.gz
	SRR11828565.fastq.gz	Fastqsanger.gz
	SRR11828566.fastq.gz	Fastqsanger.gz
	SRR11828567.fastq.gz	Fastqsanger.gz
	SRR11828568.fastq.gz	Fastqsanger.gz

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Coronavirus replication is regulated by both host and viral RNA N6–methyladenosine modifications

Project description:N6–methyladenosine (m6A) is the most abundant internal mRNA modification in eukaryotes, and it plays an important role in RNA metabolism and function. Recent studies have revealed that viral RNA m6A modification can play an anti-viral or pro-viral role depending on the virus. However, whether m6A methylation can modulate replication of coronaviruses, which cause some severe human and animal diseases such as Coronavirus Disease 2019 (COVID-19), remains unknown. Here, we determined that m6A modifications of porcine epidemic diarrhea coronavirus (PEDV) are exclusively located in the N gene at the 3’-end of the genome, and that PEDV infection alters the expression pattern of some host proteins involved in m6A modification. Depletion of m6A demethylases significantly increased PEDV replication and gene expression whereas knockdown of m6A methyltransferases slightly decreased PEDV infection. Interestingly, m6A binding proteins YTHDF 2 and 3 significantly inhibited PEDV replication whereas YTHDF1 has the opposite effect. When the major m6A sites in the N gene were mutated, the resultant recombinant PEDVs and PEDV replicons had a significant increase in replication and gene expression. This study illustrates that (i) addition of m6A to PEDV RNA inhibits viral replication, and (ii) both host and viral m6A machinery regulate coronavirus replication.

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Transcriptome-wide N6-Methyladenosine (m6A) modifications in Anopheles sinensis

Project description:Transcriptome-wide N6-Methyladenosine (m6A) modifications in Anopheles sinensis

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N6-methyladenosine (m6A) modification in HEK (primary human epidermal keratinocytes)

Project description:We conducted an analysis of N6-methyladenosine (m6A) modifications in HEK (primary human epidermal keratinocytes). The primary aim of this investigation was to establish a molecular framework elucidating the role of m6A modifications in modulating the functional of keratinocytes.

2024-08-20 | GSE269500 | GEO

Viral and Cellular N6-methyladenosine (m6A) Epitranscriptomes in KSHV Life Cycle

Project description:Tan et al. discovered abundant conserved N6-methyladenosine (m6A) modifications on KSHV transcripts during latent and productive infection in different cell types. They also show that m6A readers YTHDF2 and YTHDF3 mediate KSHV replication, and KSHV optimizes both phases of viral replication by reprograming cellular epitranscriptome to regulate distinct signaling pathways.

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Coronavirus replication is controlled by both host and viral RNA m6A methylations

Project description:N6–methyladenosine (m6A) is the most abundant internal mRNA modification in eukaryotes, and it plays an important role in RNA metabolism and function. Recent studies have revealed that viral RNA m6A modification can play an anti-viral or pro-viral role in virus life cycle. However, whether m6A methylation can modulate replication of coronaviruses, which contain the largest known RNA genomes, remains elusive. Here, we determined that m6A modifications of porcine epidemic diarrhea coronavirus (PEDV) are exclusively located in the N gene at the 3’-end of genome, and that PEDV infection alters the expression pattern of host proteins involved in m6A modification. Depletion of m6A demethylases significantly increased PEDV replication and gene expression whereas knockdown of m6A methyltransferases slightly decreased PEDV infection. Interestingly, m6A binding proteins YTHDF 2 and 3 significantly inhibited PEDV replication whereas YTHDF1 has an opposite effect. When the major m6A sites in the N gene were mutated, the resultant recombinant PEDVs and PEDV replicons had a significant increase in replication and gene expression. This study illustrates that (i) addition of m6A to PEDV RNA inhibits viral replication, and (ii) both host and viral m6A machinery regulates coronavirus replication.

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Profiles of N6-methyladenosine modifications of circular RNAs in oxygen-induced retinopathy

Project description:Profiles of N6-methyladenosine modifications of circular RNAs in oxygen-induced retinopathy

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Profiles of N6-methyladenosine modifications of circular RNAs in oxygen-induced retinopathy

Project description:To identify the N6-methyladenosine (m6A) modified circular RNAs (circRNAs) involved in a mouse model of oxygen-induced retinopathy (OIR), microarray analysis was performed with the retinal samples from OIR mice and Room air controls.

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Project description:N6-methyladenosine (m6A) is one of the most popular RNA modifications, which is widely found in messenger RNAs (mRNAs) and non-coding RNA like long no-coding RNA (lncRNAs) and circular RNA (circRNAs).In our study,we provide m6A landscape of human ameloblastoma, which expands the understanding of m6A modifications and uncovers regulation of lncRNAs and circRNAs through m6A modification in ameloblastoma.

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N6-Methyladenosine methylation profile in rat H9C2 cardiomyocytes under the hypoxic stress

Project description:Hypoxia as a crucial pathogenesis factor usually results in huge harmful effects on cardiac injury and dysfunction. In our previous study (PMID: 33294289), We observe a series of differential expressed genes between transcription and translation, which may be attributed to the hypoxia-specific binding affinity of Nuclear cap-binding subunit 3 (NCBP3) at 5’ un-translation region of target genes. But the underlying molecular mechanism of NCBP3 for gene translation modulation remains unclear. Here, we conducted RIP-seq of N6-Methyladenosine methylation in H9C2 cells with the conditions of normoxic, hypoxic and with additional NCBP3 knockdown.

2021-06-30 | E-MTAB-10682 | biostudies-arrayexpress

N6-methyladenosine Modulates Messenger RNA Translation Efficiency

Project description:N6-methyladenosine (m6A) is the most abundant internal messenger (mRNA) modification in mammalian mRNA. This modification is reversible and non-stoichiometric, which potentially adds an additional layer of variety and dynamic control of mRNA metabolism. The m6A-modified mRNA can be selectively recognized by the YTH family “reader” proteins. The preferential binding of m6A-containing mRNA by YTHDF2 is known to reduce the stability of the target transcripts; however, the exact effects of m6A on translation has yet to be elucidated. Here we show that another m6A reader protein, YTHDF1, promotes ribosome loading of its target transcripts. YTHDF1 forms a complex with translation initiation factors to elevate the translation efficiency of its bound mRNA. In a unified mechanism of translation control through m6A, the YTHDF2-mediated decay controls the lifetime of target transcripts; whereas, the YTHDF1-based translation promotion increases the translation efficiency to ensure effective protein production from relatively short-lived transcripts that are marked by m6A. PAR-CLIP and RIP was used to identify YTHDF1 binding sites followed by ribosome profling and RNA seq to assess the consequences of YTHDF1 siRNA knock-down

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