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Determine the effects of METTL16 on global translation efficiency via ribosome profiling (Ribo-seq)

ABSTRACT: Determine the effects of METTL16 on global translation efficiency via ribosome profiling (Ribo-seq)

PROVIDER: PRJNA659038 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12510855.fastq.gz	Fastqsanger.gz
	SRR12510856.fastq.gz	Fastqsanger.gz
	SRR12510857.fastq.gz	Fastqsanger.gz
	SRR12510858.fastq.gz	Fastqsanger.gz
	SRR12510859.fastq.gz	Fastqsanger.gz

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Determine the effects of METTL16 on global translation efficiency via ribosome profiling (Ribo-seq)

Project description:METTL16 is a member of methyltransferase like (METTL) family. Unlike well-studied METTL3 and METTL14, we found a much higher percentage of METTL16 is localized in the cytosol. The subcellular distribution holds the ability to potentiate translation efficiency. Via Far-western blotting and Co-Immunoprecipitation (Co-IP) assays, we have identified the direct interactions between METTL16 and eukaryotic initiation factor 3 (eIF3) a and b. Via cross-linking immunoprecipitation and qPCR (CLIP-qPCR), we have discovered the direct associations between METTL16 and rRNAs. The METTL16-eIF3a/b and METTL16-rRNAs interactions induce the binding between eIF3 and 18S rRNA, promote the formation of 43S preinitiation complex, and eventually expedite translation initiation, the rate-limiting step of translation. To determine the exact effects of METTL16 on translation efficiency, we performed ribosome profiling (Ribo-seq) with HEK293T upon CRISPR-Cas9-induced METTL16 knockout. To guarantee the repeatability and avoid any potential off-target effects, we included 3 distint sgRNAs against METTL16.

2021-10-28 | GSE156796 | GEO

Determine the effects of QKI7 on translation efficiency via ribosome profiling (Ribo-seq)

Project description:Determine the effects of QKI7 on translation efficiency via ribosome profiling (Ribo-seq)

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Determine the methyltransferase activities of METTL16 via MeRIP-seq (m6A-seq)

Project description:METTL16 belongs to methyltransferase like (METTL) family and could install m6A marks on its substrates. Here, we uncover a tumor-promoting role of METTL16 in AML and LSC self-renewal. To explore the mechanism underlying the oncogenic function of METTL16 in AML, we performed m6A-seq and RNA-seq. Via integrated analysis of m6A-seq data and RNA-seq data, we identified two bona fide targets of METTL16, BCAT1 and BCAT2. METTL16 functions as an m6A methyltransferase to regulate expression of BCAT1 and BCAT2, which contribute to reprogramming of BCAA metabolism.

2023-01-12 | GSE189995 | GEO

Determine METTL16-mediated spatiotemoral installation of m6A via MeRIP-seq (m6A-seq) with nascent RNA and nuclear poly(A) RNA

Project description:METTL16 belong to methyltransferase like (METTL) family and possesses the ability to deposit N6-methyladenosine (m6A) in mRNA. We have conducted m6A-seq with poly(A) RNAs isolated from the whole HEK293T cells upon METTL16 knockdown to identify the transcripts with hypo m6A peaks after METTL16 knockdown, and also conducted RIP-seq with HEK293T cells to determine the METTL16-bound transcripts. However, we found that the transcripts with hypo m6A peaks upon METTL16 knockdown only account for a small proportion of METTL16-bound transcripts. We suppose one of the possibility reasons might be due to spatiotemporal installation of m6A. To support our hypothesis, we performed additional m6A seq with nascent RNA and nuclear poly(A) RNA isolated from HEK293T cells with METTL16 knockdown.

2021-10-28 | GSE156795 | GEO

Identifying interaction proteins of METTL16 using co immunoprecipitation and mass spectroscopy

Project description:METTL16 has recently been identified as an RNA methyltransferase that installs m6A marks on a few transcripts. But its function in cytosol remains unclear. Puromycin-labelling and renilla luciferase assay revealed that METTL16 can promote translation efficiency in an m6A-independent manner. To explore the mechanism, we performed co-immunoprecipitation using METTL16 antibody and mass spectroscopy to identify its interaction proteins. Moreover, we find that METTL16 is essential for tumorigenesis of non-small cell lung cancer.

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Translation efficiency changes measured using ribosome footprinting (Ribo-seq) in poorly and highly metastatic cancer cells

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Determine the effects of QKI7 on translation efficiency via ribosome profiling (Ribo-seq)

Project description:N7-methylguanosine (m7G) modification, routinely occurring at the 5’ cap of mRNA or within tRNA and rRNA, also exists internally in mRNA. Although essential for mRNA translation as well as stress response, the “reader” protein for mRNA internal m7G modification is still unrevealed. Here, we reported that Quaking protein (QKI), especially QKI7, can selectively recognize the internal mRNA m7G decoration in the cytosol of various cell types. We identified over 1000 confident m7G-modified and QKI binding RNA targets with a conserved motif, “GANGAN (N=A/U/G)”. More strikingly, internal m7G reader QKI7 directly interacts with the SG core protein G3BP1 and can shuttle a subset of m7G-modified transcripts into SG mRNA pool under oxidative stress condition. Additionally, by sequestering mRNA within SGs, QKI7 modulates the translation efficiency of selected transcripts. Moreover, in line with the observation that doxorubicin triggers the assembly of SGs, QKI7 mediates the sensitivity of cancer cells to chemotherapy drug treatment.

2023-05-17 | GSE192846 | GEO

Determine the methyltransferase activities of METTL16 via MeRIP-seq (m6A-seq)

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Project description:Ribosome profiling (Ribo-Seq) and RNA-Seq analysis of mouse neuroblastoma (Neuro2a) cells infected with Japanese Encephalitis Virus (JEV) P20778 Vellore strain. At 18 h post infection (p.i.), infected cells were treated with either cycloheximide (translation elongation inhibitor) or in combination with harringtonine (translation initiation inhibitor). Ribo-Seq libraries were prepared using a broad range of fragment lengths (25 to 70 nucleotides) and deep sequenced. This allowed for estimation of ribosomal frameshifting efficiency and discovery of a novel upstream open reading frame (uORF) in JEV along with perturbations in ribosome-associated tRNA levels upon JEV infection.

2021-07-05 | E-MTAB-9352 | biostudies-arrayexpress

Ribo-seq analysis of Saccharomyces cerevisiae with and without 10 minute glucose starvation

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