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TMK4-mediated Phosphorylation of FIP37 Regulates Auxin-triggered N6-methyladenosine mRNA Modification of Auxin Biosynthetic Genes in Arabidopsis

ABSTRACT: Using m6A-seq, RNA-seq, we show that auxin can induce transcriptome-wide m6A reprogramming.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE156570 | GEO | 2024/07/18

REPOSITORIES: GEO

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TMK4-mediated Phosphorylation of FIP37 Regulates Auxin-triggered N6-methyladenosine mRNA Modification of Auxin Biosynthetic Genes in Arabidopsis

Project description:TMK4-mediated Phosphorylation of FIP37 Regulates Auxin-triggered N6-methyladenosine mRNA Modification of Auxin Biosynthetic Genes in Arabidopsis

| PRJNA658355 | ENA

Structure and Thermodynamics of N6-methyladenosine in RNA: a Spring-Loaded Base Modification

Project description:We determine m6A modification sites in GM12878 cells. Examination of m6A modification sites on the transcriptome of GM12878 cells, using a m6A-specific antibody.

2015-01-29 | E-GEOD-65380 | biostudies-arrayexpress

The blue light receptor CRY1 interacts with FIP37 to promote N6-methyladenosine RNA modification and photomorphogenesis in Arabidopsis

Project description:Using m6A-seq, we present transcriptome-wide distribution of m6A in wild type, cry1 and cry1 cry2 seedlings with or without blue light treatment. Analysis of m6A distribution reveals CRY1 and CRY1 are involved blue light induced changes of m6A distribution in Arabidopsis

2023-03-06 | GSE211540 | GEO

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

2015-06-09 | E-GEOD-63591 | biostudies-arrayexpress

Profiling of N6-Adenosine (m6A) Methylation in Arabidopsis thaliana wild-type and fip37-4 LEC1:FIP37

Project description:N6-methyladenosine (m6A) represents the most prevalent internal modification on messenger RNA, and requires a multicomponent m6A methyltransferase complex in mammals. How their plant counterparts determine the global m6A modification landscape and its molecular link to plant development remain elusive. Here we show that FKBP12 INTERACTING PROTEIN 37 KD (FIP37) is a core component of the m6A methyltransferase complex, which underlies control of shoot stem cell fate in Arabidopsis. The mutants lacking FIP37 exhibit massive overproliferation of shoot meristems and a transcriptome-wide loss of m6A RNA modifications. We further demonstrate that FIP37 mediates m6A RNA modification on key shoot meristem genes inversely correlated with their mRNA stability, thus confining their transcript levels to prevent shoot meristem overproliferation. Our results suggest an indispensable role of FIP37 in mediating m6A mRNA modification, which is required for maintaining the shoot meristem as a renewable source for continuously producing all aerial organs in plants. m6A-seq in Arabidopsis thaliana (Col-0) wild-type and fip37-4 LEC1:FIP37, two replicates for each sample

2016-07-25 | E-GEOD-75506 | biostudies-arrayexpress

Dynamic N6-methyladenosine Epitranscriptomic Landscape in Lung Adenocarcinoma

Project description:Systematically evaluate the global effect of dysregulated m6A regulators on the m6A epitranscriptome in patient tumors, and identify prognostic m6A markers by linking with patients' clinicopathological and outcome information.

| EGAS00001005524 | EGA

Genome-wide identification of N6-methyladenosine by microarray

Project description:Although internal PolyA RNA modification N6-methyladenosine (m6A) plays essential roles in diverse biological processes, technology to detect precise m6A sites at transcriptome-wide scale is lacking. Here, we discovered that m6A interferes A (Adenine) – U (Uracil) or A-T (Thymidine) pairing. Based on differential hybridization between methylated vs. unmethylated RNAs to a DNA probe, we developed tiling microarray to pinpoint m6A sites in mouse transcriptome. We validated some of the identified sites and provided evidence to suggest that one functional mechanism of m6A is to block small RNA targeting to methylated mRNA. We designed a custom tiling array with to examine the precise location of m6A within meRIP-seq peaks from mouse embryonic stem cells determined in our previous publication (Wang et al., 2014). Each custom two-channel Agilent tiling array harbors 947,952 probes. Each probe is 25 nucleotides (nt), and any two adjacent probes in the genomic coordinate overlap each other by 19 nt. The Cy5 or red channel corresponds to Mettl14 knockout (M14) or DZA mutant mESC cell line, and Cy3 or green channel is associated with wild type cell line treated with scramble hairpin (SCR). Thus, in principle a higher Cy5/Cy3 signal for each probe reflects an increased hybridization to the oligonucleotide due to de-methylation of a particular RNA molecule in M14 or DZA condition relative to the SCR control. Moreover, we employed additional arrays with both channels dedicated for M14 as an external control for technical difference between the Cy5 and Cy3 dye (details below). For each comparison, we have three biological replicates, and therefore there are 9 tiling arrays in total (i.e., 3 arrays for M14 vs SCR, 3 arrays for DZA vs SCR, and 3 arrays for M14 vs M14).

2015-09-08 | E-GEOD-62530 | biostudies-arrayexpress

Widespread N6-methyladenosine-dependent RNA Structural Switches Regulate RNA-Protein Interactions

Project description:We show that N6-methyladenosine (m6A), the most abundant internal modification in mRNA/lncRNA with still poorly characterized function, alters RNA structure to facilitate the access of RBM for heterogeneous nuclear ribonucleoprotein C (hnRNP C). We term this mechanism m6A-switch. Through combining PAR-CLIP with Me-RIP, we identify 39,060 m6A-switches among hnRNP C binding sites transcriptome-wide. We show that m6A-methyltransferases METTL3 or METTL14 knockdown decreases hnRNP C binding at 16,582 m6A-switches. Taken together, 2,798 m6A-switches of high confidence are identified to mediate RNA-hnRNP C interactions and affect diverse biological processes including cell cycle regulation. These findings reveal the biological importance of m6A and provide insights into the sophisticated regulation of RNA-RBP interactions through m6A-induced RNA structural remodeling. Measure the m6A methylated hnRNP C binding sites transcriptome-wide by PARCLIP-MeRIP; measure the differential hnRNP C occupancies upon METTL3/METTL14 knockdown by PAR-CLIP; measure RNA abundance and splicing level changes upon HNRNPC, METTL3 and METTL14 knockdown

2015-02-27 | E-GEOD-56010 | biostudies-arrayexpress

N6-Methyladenosine Modification Controls Circular RNA Immunity.

Project description:Identification of m6A modification sites on circRNAs in Hela cells.

2019-08-29 | GSE116007 | GEO

Mapping N6-methyladenosine methylome in mouse embryonic stem cells

Project description:m6A-seq of undifferentiated and differentiated mouse embryonic stem cell m6A-mRNA library for undifferentiated and differentiated mouse embryonic stem cell each having one biological replicate were generated using HiSeq2000 v3 flowcell (Illumina) and sequenced for 100 bases with separate 7 base indexing read in a single lane.

2015-12-31 | E-GEOD-44086 | biostudies-arrayexpress

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