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TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Mock or VSV treated WT and Ythdf1-KO BMDM]

ABSTRACT: TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Mock or VSV treated WT and Ythdf1-KO BMDM]

PROVIDER: PRJNA673356 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12952100_1.fastq.gz	Fastqsanger.gz
	SRR12952100_2.fastq.gz	Fastqsanger.gz
	SRR12952101_1.fastq.gz	Fastqsanger.gz
	SRR12952101_2.fastq.gz	Fastqsanger.gz
	SRR12952102_1.fastq.gz	Fastqsanger.gz

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TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Mock or VSV treated WT and Ythdf1-KO BMDM]

Project description:mRNA m6A modification is involved in regulation of immune system. However, its function in antiviral immunity is controversial, and how immune responses regulate m6A modification is unknown. We here found TBK1, a key kinase of antiviral pathways, phosphorylated the core m6A methyltransferase METTL3 at Serine 67. The phosphorylated METTL3 interacted with translational complex and enhanced proteins translation, including IRF3, and facilitated antiviral responses. TBK1 also promoted METTL3 activation and m6A modification, which is required for stabilizing IRF3 mRNA. Type I IFN induction was severely impaired in METTL3 deficient cells. Mettl3flfl-lyz2-Cre mice were significantly more susceptible to IAV-induced lethality than control mice. Consistently, Ythdf1—/— mice cannot control viral infection and showed higher mortality than control mice due to decreased IRF3 expression. Together, we demonstrated that innate signals activated METTL3 via TBK1, and METTL3 and m6A modification secured antiviral immunity by promoting mRNA stability and protein translation.

2020-10-31 | GSE160481 | GEO

TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Mock or VSV treated WT and Mettl3 crispr iBMDM]

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TBK1-METTL3 axis facilitates antiviral immunity [MeRIP-seq]

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TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Mock or VSV treated WT and Mettl3 crispr iBMDM]

Project description:TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Mock or VSV treated WT and Mettl3 crispr iBMDM]

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TBK1-METTL3 axis facilitates antiviral immunity [RNA-seq: Brain from WT and Mettl3 heterozygous kd]

Project description:mRNA m6A modification is involved in regulation of immune system. However, its function in antiviral immunity is controversial, and how immune responses regulate m6A modification is unknown. We here found TBK1, a key kinase of antiviral pathways, phosphorylated the core m6A methyltransferase METTL3 at Serine 67. The phosphorylated METTL3 interacted with translational complex and enhanced proteins translation, including IRF3, and facilitated antiviral responses. TBK1 also promoted METTL3 activation and m6A modification, which is required for stabilizing IRF3 mRNA. Type I IFN induction was severely impaired in METTL3 deficient cells. Mettl3flfl-lyz2-Cre mice were significantly more susceptible to IAV-induced lethality than control mice. Consistently, Ythdf1-/- mice cannot control viral infection and showed higher mortality than control mice due to decreased IRF3 expression. Together, we demonstrated that innate signals activated METTL3 via TBK1, and METTL3 and m6A modification secured antiviral immunity by promoting mRNA stability and protein translation.

2020-10-14 | GSE159421 | GEO

Mettl3-m6A-YTHDF1 axis promotion of mitochondrial dysfunction in metabolic dysfunction–associated steatotic liver disease (MASLD)

Project description:The N6-methyladenosine (m6A) mRNA modification and the mitochondrial respiratory chain (MRC) hold paramount importance in the advancement of MASLD. This study thoroughly investigates the relationship and impact of m6A mRNA modification and mitochondrial function in the progression of MASLD. Here we report that the mRNA and protein levels of mitochondrial respiratory chain (MRC) subunits showed inconsistent trends in vivo experiments. Abnormal m6A modification and mitochondrial dysfunction in MASLD were attributed to the upregulation of methyltransferase like 3 (Mettl3) and the downregulation of YTH N6-methyladenosine RNA binding protein 1 (YTHDF1) induced by high-fat foods. Mettl3 promoted the MRC's function. However, knockout of the reader protein YTHDF1, which plays a crucial role in the m6A modification process, counteracted the effect of Mettl3 and suppressed MRC. In MASLD, damage to the MRC may be regulated by the Mettl3-m6A-YTHDF1 complex axis, especially by the role of YTHDF1. Our research has offered a novel perspective on the involvement of m6A mRNA methylation in the pathogenesis of MASLD.

2024-09-20 | PXD047819 | Pride

Wild-type and GLO2 knockout BMDMs with infection of VSV

Project description:Transcriptome analysis of wild-type and GLO2 knockout BMDM infected with VSV for 12 hours .

2024-07-01 | GSE248885 | GEO

TBK1-METTL3 axis facilitates antiviral immunity

Project description:TBK1-METTL3 axis facilitates antiviral immunity

| PRJNA669704 | ENA

m6A-facilitated hippocampal learning and memory through Ythdf1

Project description:N6-methyladenosine (m6A) is the most prevalent internal RNA modification in mammalian messenger RNAs (mRNAs). While m6A has been shown to mark groups of mRNAs for coordinated degradation in various physiological processes, the relevance of m6A in affecting translation remains to be determined in intact biological systems in vivo. Here we show that, through its reader protein Ythdf1, m6A promotes a pulse of protein synthesis of target transcripts in response to neuronal stimuli in the adult mouse hippocampus, thereby facilitating learning and memory processes. Mice with genetic deletion of the Ythdf1 gene (Ythdf1-/-) exhibit learning and memory defects, as well as impaired hippocampal synaptic transmission and long-term potentiation (LTP). Selective re-expression of Ythdf1 in the hippocampus of adult Ythdf1-/- mice fully rescues the behavioral and synaptic defects, while hippocampus-specific knockdown of Ythdf1 or Mettl3, the catalytic component of m6A methyltransferase complex, recapitulates the hippocampal deficiency in adult mice. At the molecular level, transcriptome-wide mapping of m6A sites and RNA binding sites of Ythdf1 on hippocampal mRNAs using crosslinking immunoprecipitation followed by high-throughput sequencing (CLIP-seq) uncovered key neuronal genes, including those involved in synaptic transmission and long-term potentiation. Nascent protein labelling and tether reporter assays in cultured hippocampal neurons revealed that Ythdf1 is critical for initiating a pulse of protein synthesis of target transcripts in a neuronal-stimulus-dependent manner. Collectively, our results uncover a pathway of mRNA m6A methylation in learning and memory, which is mediated through Ythdf1 in response to stimuli.

2018-08-17 | GSE106607 | GEO

TBK1-METTL3 axis facilitates antiviral immunity [MeRIP-seq]

Project description:TBK1-METTL3 axis facilitates antiviral immunity [MeRIP-seq]

| PRJNA674508 | ENA