GEO DataSets

(Submitter supplied) The post-transcriptional modification of mRNA and tRNA provides an additional layer of regulatory complexity during gene expression. TRMT10A is a tRNA methyltransferase that installs N1-methylguanosine (m1G), while FTO performs demethylation on N6-methyladenosine (m6A) and N6,2'-O-dimethyladenosine (m6Am) in mRNA. We find that this tRNA methyltransferase TRMT10A interacts with mRNA demethylase FTO (ALKBH9), both in vitro and inside cells. more...

Organism:

Homo sapiens

Type:

Other

Platforms:

GPL11154 GPL21697

12 Samples

Download data: TXT, XLSX

(Submitter supplied) FTO, the first RNA demethylase discovered, mediates the demethylation of N6-methyladenosine (m6A), installed internally on messenger RNA, and N6,2′-O-dimethyladenosine (m6Am), occurring at the +1 position from the 5’ cap. Despite extensive recent research on FTO, its physiological impact on cellular processes has yet to be fully elucidated. Here, we demonstrate that the cellular distribution of FTO is distinct among different cell lines, which critically affects the access of FTO to different RNA substrates. more...

Organism:

Mus musculus

Type:

Other

Platform:

GPL21103

1 Sample

Download data: TXT

(Submitter supplied) N7-methylguanosine (m7G) is a positively charged, essential modification at the 5′ cap of eukaryotic mRNA, regulating mRNA export, translation, and splicing. m7G also occurs internally within tRNA and rRNA, but its existence and distribution within eukaryotic mRNA remain to be investigated. Here, we show the presence of internal m7G sites within mammalian mRNA. We then performed transcriptome-wide profiling of internal m7G methylome using m7G-MeRIP sequencing (MeRIP-seq). more...

Organism:

Homo sapiens; Mus musculus

Type:

Methylation profiling by high throughput sequencing; Other

Platforms:

GPL19057 GPL18573 GPL20301

104 Samples

Download data: BED, FPKM_TRACKING, TXT, XLSX

(Submitter supplied) Following synthesis, RNA can be modified with over 100 chemically distinct modifications, and in recent years it was shown that processing, localization, stability and translation of mRNAs can be impacted by an increasing number of these modifications. An emerging modification, present across all three domains of life, is N1-methyladenosine (m1A). m1A is of particular interest, as its methyl group disrupts Watson-Crick base pairing and it thus harbors substantial regulatory potential. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL18573

20 Samples

Download data: BED

(Submitter supplied) Small nuclear RNAs (snRNAs) are core spliceosome components and mediate pre-mRNA splicing. Here we show that snRNAs contain a regulated and reversible nucleotide modification causing them to exist as two different methyl isoforms, m 1 and m 2 , reflecting the methylation state of the adenosine adjacent to the snRNA cap. We find that snRNA biogenesis involves the formation of an initial m 1 isoform with a single-methylated adenosine (2′-O-methyladenosine, Am), which is then converted to a dimethylated m 2 isoform (N 6 ,2′-O-dimethyladenosine, m 6 Am). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL17021

4 Samples

Download data: BEDGRAPH, TXT

(Submitter supplied) N6-methyladenosine (m6A) RNA methylation is the most abundant internal chemical modifications in eukaryotic messenger RNA (mRNA) as well as long non-coding RNA (lncRNA). Recently, m6A RNA methylation research was revived by the discovery of the fat mass- and obesity-associated protein (FTO) as the first RNA demethylase, implicating that m6A RNA methylation is a reversible and dynamic modification and may have critical biological functions. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

4 Samples

Download data: TXT

(Submitter supplied) N6-methyladenosine (m6A) RNA methylation is the most abundant internal chemical modifications in eukaryotic messenger RNA (mRNA) as well as long non-coding RNA (lncRNA). Recently, m6A RNA methylation research was revived by the discovery of the fat mass- and obesity-associated protein (FTO) as the first RNA demethylase, implicating that m6A RNA methylation is a reversible and dynamic modification and may have critical biological functions. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL11154

8 Samples

Download data: XLSX

(Submitter supplied) N1-methyl adenosine (m1A) is a wide-spread RNA modification present in tRNA, rRNA and mRNA. m1A modification sites in tRNAs are evolutionary conserved and its formation on tRNA is catalyzed by methyltransferase TRMT61A and TRMT6 complex. m1A promotes translation initiation and elongation. Due to its positive charge under physiological conditions, m1A can notably modulate RNA structure. It also blocks Watson-Crick base pairing and causes mutation and truncation during reverse transcription. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL15520

12 Samples

Download data: TXT

(Submitter supplied) Cancer stem cells (CSCs) are a small but critical cell population for cancer biology since they display inherent resistance to standard therapies and give rise to metastases. Despite accruing evidence establishing a link between deregulation of epitranscriptome-related players and tumorigenic process, the role of messenger RNA (mRNA) modifications dynamic in the regulation of CSC properties remains poorly understood. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Other

Platforms:

GPL21697 GPL16791

28 Samples

Download data: CSV, TXT

(Submitter supplied) Gene expression can be post-transcriptionally regulated via dynamic and reversible RNA modifications. N1-methyladenosine (m1A) is a recently identified mRNA modification; however, little is known about its precise location, regulation and function. Here, we develop a single-nucleotide resolution m1A profiling method, based on m1A-induced misincorporation during reverse transcription, and report distinct classes of m1A methylome in the human transcriptome. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing

Platform:

GPL16791

24 Samples

Download data: TXT

(Submitter supplied) We report the identification and quantification of Watson-Crick modifications in tRNA and rRNA through the use of high throughput sequencing. We apply the recently published DM-tRNA-Seq method to generate demethylase treated and untreated 293T samples, and using computational methods we are able to flag sites using a modification index. This index allows us to generate site-resolved information about modification that we can use to identify and quantify Watson-Crick face modifications in tRNA and rRNA. more...

Organism:

Homo sapiens

Type:

Other; Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platform:

GPL15433

5 Samples

Download data: TXT

(Submitter supplied) Despite its biological importance, transfer RNA (tRNA) could not be adequately sequenced due to the abundant presence of post-transcriptional modifications and extensive structure that interfere with cDNA synthesis and adapter ligation. We achieve efficient and quantitative tRNA sequencing by removing base methylations using engineered demethylases and using a highly processive thermo-stable reverse transcriptase without the need for adapter ligation (DMTRT-tRNA-seq). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15433

8 Samples

Download data: TXT

(Submitter supplied) Internal bases in mRNA can be subjected to modifications that influence the fate of mRNA in cells. One of the most prevalent modified bases is found at the 5′ end of mRNA, at the first encoded nucleotide adjacent to the 7-methylguanosine cap. Here we show that this nucleotide, N6,2′-O-dimethyladenosine (m6Am), is a reversible modification that influences cellular mRNA fate. Using a transcriptome-wide map of m6Am we find that m6Am-initiated transcripts are markedly more stable than mRNAs that begin with other nucleotides. more...

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by high throughput sequencing; Other

Platforms:

GPL16791 GPL17021

28 Samples

Download data: BED, TAB, TXT

(Submitter supplied) The FTO gene locus has been linked to cancer and obesity through encoded N6-methyladenosine (m6A) demethylase FTO or inherited genomic variants (e.g. intronic single-nucleotide polymorphisms). Here we demonstrate that FTO-IT1, a long noncoding RNA (lncRNA) transcribed from a FTO gene intron, is upregulated during prostate cancer (PCa) progression and positively correlated with poor survival of patients with tumors only expressing wild-type p53. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

4 Samples

Download data: XLSX

(Submitter supplied) N6-methyladenosine (m6A) modification of messenger RNAs (mRNAs) is a pivotal mechanism controlling mRNA fate in cells. RNA m6A modification is regulated by the functional balance between methyltransferases and demethylases. Here we demonstrated that FTO-IT1 enhancer RNA (eRNA), a long non-coding RNA (lncRNA) transcribed from the last intron of FTO gene is significantly upregulated in CRPC and aggressive tumors compared to primary tumors. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL11154

8 Samples

Download data: BW

(Submitter supplied) The cancer cells selectively promote translation of specific oncogenic transcripts to facilitate cancer survival and progression, while the underlying mechanisms are poorly understood. N7-methylguanosine (m7G) tRNA modification and its methyltransferase complex METTL1/WDR4 are significantly up-regulated in intrahepatic cholangiocarcinoma (ICC) and associated with poor prognosis. We developed tRNA reduction and cleavage sequencing (TRAC-Seq) to reveal the m7G tRNA methylome inICC cell line and ribosome nascent-chain complex-bound mRNAs sequencing(RNC-seq) and ribosome profiling(Ribo-seq) to study the differential translated genes and reveal the ribosome pausing. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL20795 GPL18573 GPL30209

20 Samples

Download data: TXT

(Submitter supplied) During stress, while global mRNA translation is reduced, specific stress-responsive transcripts are translated. How stress-responsive mRNAs are selectively translated is unknown. Ribosome modifications may facilitate selective translation of specific transcripts in different cell types under differing conditions. Here we identify METL-5 as a C. elegans N6-adenosine methyltransferase that methylates adenosine 1717 on 18S rRNA. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by high throughput sequencing

Platform:

GPL26672

24 Samples

Download data: CSV, TXT

(Submitter supplied) mRNAs are regulated by nucleotide modifications that influence their cellular fate. Two of the most abundant modified nucleotides are N6-methyladenosine (m6A), found within mRNAs, and N6,2′-O-dimethyladenosine (m6Am), which is found at the first transcribed nucleotide. Distinguishing these modifications in mapping studies has been difficult. Here, we identify and biochemically characterize PCIF1, the methyltransferase that generates m6Am. more...

Organism:

Homo sapiens; Mus musculus

Type:

Other

Platforms:

GPL17021 GPL16791

21 Samples

Download data: BED, TXT

(Submitter supplied) Here we show the repressive H3K9me2 mark is specifically removed by the induction of m6A-modified transcripts. We demonstrate that the methyltransferase METTL3/METTL14 regulates H3K9me2 modification. We observed a genome-wide correlation between m6A and occupancy by the H3K9me2 demethylase KDM3B, and we found m6A reader YTHDC1 physically interacts and recruits KDM3B to m6A-associated chromatin regions, promoting H3K9me2 demethylation and gene expression. more...

Organism:

Mus musculus; Homo sapiens

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Other

Platforms:

GPL21273 GPL24247 GPL24676

56 Samples

Download data: BED, BW, TXT

(Submitter supplied) Transfer RNA (tRNA) is a central component of protein synthesis and cell signaling network. One salient feature of tRNA is its heavily modified status, which can critically impact its function. Here we show that mammalian ALKBH1 is a tRNA demethylase. It mediates the demethylation of N1-methyladenosine (m1A) in tRNAs. The ALKBH1-catalyzed demethylation of the target tRNAs results in their reduced partition in polysomes and their decreased usage in protein synthesis. more...

Organism:

Homo sapiens; Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL16791 GPL17021

9 Samples

Download data: TXT