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RNA m5C Methylation in breast cancer using MeRIP-Seq

ABSTRACT: RNA m5C methylation profile of MCF10A and MDA486 by using MeRIP-Seq protocol

ORGANISM(S): Homo sapiens

PROVIDER: GSE53370 | GEO | 2014/02/20

SECONDARY ACCESSION(S): PRJNA231850

REPOSITORIES: GEO

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RNA m5C Methylation in breast cancer using MeRIP-Seq

Project description:RNA m5C methylation profile of MCF10A and MDA486 by using MeRIP-Seq protocol Immunoprecipitation of Methylated mRNA at Cytosine (m5C) residues: Affinity purified of anti-methyl cytosine (m5C) polyclonal antibody 7ug (Zymo Research, Catalog#A3001-50) was conjugated with protein-A magnetic beads for 2 h at 4°C in end to end rotator. After that, conjugated beads were extensively washed with RNA immunoprecipitation (RIP) wash buffer to remove unbound antibody. Fragmented 25 ug polyA RNA (mRNA) was incubated with m5C conjugated beads for overnight at 4°C in in the rotating platform in RIP buffer. RIP was done using Megna RNA Immunoprecipitation kit (Millipore, Catalog#17-700). m5C mRNA-immune bead complex was treated with proteinase K buffer to release m5C mRNA from the conjugated antibody. To isolate m5C, mRNA was treated with phenol:chloroform:isoamyl and mixed with 400 ul of chloroform, which was centrifuged at 14000 rpm for 10 minutes to separate aqueous phase. The aqueous phase was ethanol precipitated at -80°C for overnight, to get m5C mRNA. This precipitated m5C mRNA pellet was washed twice with 70% ethanol and air dried. Finally, m5C mRNA pellet was dissolved in nuclease free Water. The m5C mRNA integrity and conentration was quantified by bioanalyzer (Agilent) and Qubit 2.0 flurometer (Invitrogen). The fragmented mRNA was used by following TruSeq RNA Sample Preparation Guide to develop RNA-Seq library for sequencing.

2014-02-20 | E-GEOD-53370 | biostudies-arrayexpress

RNA m5C Methylation in breast cancer using MeRIP-Seq

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TET2 regulates histone H2AK119ub and leukemogenesis through LTR RNA m5C oxidation [seq_RNA-caRNA-m5C-MeRIP]

Project description:TET2 regulates histone H2AK119ub and leukemogenesis through LTR RNA m5C oxidation [seq_RNA-caRNA-m5C-MeRIP]

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Protocol for detecting m5C RNA modification at single-base resolution using m5C-TAC-seq

Project description:Protocol for detecting m5C RNA modification at single-base resolution using m5C-TAC-seq

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Mapping the m1A, m5C, m6A and m7G Methylation Atlas in Zebrafish Brains under Hypoxic Conditions by MeRIP-seq

Project description:The epigenetic modifications play important regulatory roles in tissue development, maintenance of physiological functions and pathological process. RNA methylations, including newly identified m1A, m5C, m6A and m7G, are important epigenetic modifications. However, how these modifications are distributed in the transcriptome of vertebrate brains and whether their abundance is altered under pathological conditions are still poorly understood. In this study, we chose the model animal of zebrafish to conduct a systematic study to investigate the mRNA methylation atlas in the brain. By performing unbiased analyses of the m1A, m5C, m6A and m7G methylation of mRNA, we found that within the whole brain transcriptome, with the increase of the gene expression levels, the overall level of each of these four modifications on the related genes was also progressively increased. Further bioinformatics analysis indicated that the zebrafish brain has an abundance of m1A modifications. In the hypoxia-treated zebrafish brains, the proportion of m1A is decreased, affecting the RNA splicing and zebrafish endogenous retroviruses. Our study presents the first comprehensive atlas of m1A, m5C, m6A and m7G in the epitranscriptome of the zebrafish brain and reveals the distribution of these modifications in mRNA under hypoxic conditions. These data provide an invaluable resource for further research on the involvement of m1A, m5C, m6A and m7G in the regulation of miRNA and repeat elements in vertebrates, and provide new thoughts to study the brain hypoxic injury on the aspect of epitranscriptome.

2022-01-26 | GSE194284 | GEO

Protocol for detecting m5C RNA modification at single-base resolution using m5C-TAC-seq

Project description:Here we report m5C-TAC-seq, a base-resolution sequencing method to directly detect m5C sites without affecting unmodified C. In m5C-seq, we combined TET-mediated oxidation of RNA m5C to f5C with the selective chemical labeling reaction of f5C, enabling both pre-enrichment of m5C-containing RNA and a m5C-to-T transition in reverse transcription. m5C-seq identifies 2,500 sites in the transcriptome of HeLa and 768 sites in the transcriptome-wide of HEK293T. In addition, taking advantage of barcoding and pooling strategy, m5C-seq detected differential m5C sites upon specific methyltransferases depletion in mESCs and dynamically regulated m5C sites under cell fate transition. Moreover, we also detected 215 sites in chromatin-associated RNAs, demonstrating that portion of m5C sites can be co-transcriptionally catalyzed and the existence of m5C methylations in repeat RNAs.

2024-10-01 | GSE278327 | GEO

Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_RNA-caRNA-m5C-MeRIP]

Project description:Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_RNA-caRNA-m5C-MeRIP]

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Sequence- and structure-selective mRNA m5C methylation

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Integrated analysis based on RNA immunoprecipitation sequencing (RIP-seq) and m5C methylated RNA immunoprecipitation and sequencing (MeRIP-seq) assays to identify the target genes of NSUN2/YBX1-m5C axis in ESCC progression

Project description:The modification and recognition of 5-methylcytosine (m5C) are involved in the initiation and progression of various tumor types. However, the precise role and potential mechanism of Y-box-binding protein 1 (YBX1) in esophageal squamous cell carcinoma (ESCC) remains unclear. Here, we found that YBX1 was frequently upregulated in ESCC compared with matched nontumor tissues. Gain- and loss-of-function assays showed that YBX1 promoted the proliferation and metastasis of ESCC cells both in vitro and in vivo. Functional studies revealed that NOP2/Sun RNA methyltransferase family member 2 (NSUN2) is a critical RNA methyltransferase that facilitates YBX1-mediated ESCC progression. Mechanistically, integrated analysis based on RNA immunoprecipitation sequencing (RIP-seq) and m5C methylated RNA immunoprecipitation and sequencing (MeRIP-seq) assays identified spermine oxidase (SMOX) as a target gene containing an m5C site in its coding sequence (CDS) region, which coincided well with the binding site of YBX1. Overexpression of SMOX-WT but not SMOX-Mut partially restored the proliferation and invasion ability of ESCC cells curbed by YBX1 knockdown. Moreover, YBX1 activated the mTORC1 signaling pathway by stabilizing SMOX mRNA. Our study revealed that YBX1 promotes ESCC development by stabilizing SMOX mRNA in an m5C-dependent manner, thus providing a valuable therapeutic target for ESCC.

2024-06-05 | GSE249045 | GEO

m5C MeRIP sequencing in PANC-1 cells to map the m5C methylome of PANC-1 cells treated with CAF-derived Evs

Project description:EV-packaged PIAT mediates EGR1, NTRK1 and SMAD7 mRNA stability in a YBX1-dependent manner. To explore whether YBX1 enhances EGR1, NTRK1 and SMAD7 mRNA stability in an m5C-dependent manner, we conducted m5C-seq in PANC-1 cells to map the m5C methylome of PANC-1 cells treated with CAF-derived EVs.

2024-04-20 | GSE263948 | GEO

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