Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Liver Homeostasis, Hepatocyte Ploidy, and Circadian Rhythm-controlled Gene Expression are Perturbed in Liver-Specific METTL3 Knockout Mice

ABSTRACT: METTL3 is essential for ESC differentiation and embryonic development, and its dysregulation is linked to various diseases including metabolic disorders and cancer. However, the consequence of m6A perturbation in the mammalian liver is not understood. Here, we provide insight into this by generating mice M3LKO (Mettl3fl/fl; Alb-Cre) mice carrying a hepatocyte-specific deletion of Mettl3.

ORGANISM(S): Mus musculus

PROVIDER: GSE176113 | GEO | 2021/09/15

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

METTL3 Regulates Liver Homeostasis, Hepatocyte Ploidy, and Circadian Rhythm-Controlled Gene Expression in Mice.

Project description:N6-methyladenosine (m6A), the most abundant internal modifier of mRNAs installed by the methyltransferase 13 (METTL3) at the (G/A)(m6A)C motif, plays a critical role in the regulation of gene expression. METTL3 is essential for embryonic development, and its dysregulation is linked to various diseases. However, the role of METTL3 in liver biology is largely unknown. In this study, METTL3 function was unraveled in mice depleted of Mettl3 in neonatal livers (Mettl3fl/fl; Alb-Cre). Liver-specific Mettl3 knockout (M3LKO) mice exhibited global decrease in m6A on polyadenylated RNAs and pathologic features associated with nonalcoholic fatty liver disease (eg, hepatocyte ballooning, ductular reaction, microsteatosis, pleomorphic nuclei, DNA damage, foci of altered hepatocytes, focal lobular and portal inflammation, and elevated serum alanine transaminase/alkaline phosphatase levels). Mettl3-depleted hepatocytes were highly proliferative, with decreased numbers of binucleate hepatocytes and increased nuclear polyploidy. M3LKO livers were characterized by reduced m6A and expression of several key metabolic transcripts regulated by circadian rhythm and decreased nuclear protein levels of the core clock transcription factors BMAL1 and CLOCK. A significant decrease in total Bmal1 and Clock mRNAs but an increase in their nuclear levels were observed in M3LKO livers, suggesting impaired nuclear export. Consistent with the phenotype, methylated (m6A) RNA immunoprecipitation coupled with sequencing and RNA sequencing revealed transcriptome-wide loss of m6A markers and alterations in abundance of mRNAs involved in metabolism in M3LKO. Collectively, METTL3 and m6A modifications are critical regulators of liver homeostasis and function.

| S-EPMC8759040 | biostudies-literature

Liver Homeostasis, Hepatocyte Ploidy, and Circadian Rhythm-controlled Gene Expression are Perturbed in Liver-Specific METTL3 Knockout Mice

Project description:Liver Homeostasis, Hepatocyte Ploidy, and Circadian Rhythm-controlled Gene Expression are Perturbed in Liver-Specific METTL3 Knockout Mice

| PRJNA734937 | ENA

Mettl3-mediated m6A modification controls postnatal liver development by modulating Hnf4a-centred regulatory network [Primary hepatocyte RNA-seq]

Project description:RNA sequencing of primary hepatocytes from Control and and hepatocyte-specific Mettl3 knockout with ALB-Cre (Mettl3 cKO) mice after Actinomycin D treatment.

2022-05-26 | GSE198513 | GEO

Transcriptome-wide maps of m6A RNA methylation marks in murine liver

Project description:N6-methyladenosine (m6A), the most prevalent modification of mRNAs at the (G/A)(m6A)C motif installed by METTL3 that plays critical role in regulation of gene expression. METTL3 is essential for embryonic development, and its dysregulation is linked to various diseases including metabolic disorders and cancer. Here, we provide insight into this by generating Mettl3fl/fl; Alb-Cre (M3LKO) mice carrying a hepatocyte-specific deletion of Mettl3. RNA-seq and MeRIP-seq analyses of mRNA identified significant dysregulation of metabolic genes in M3LKO mice.

2021-09-15 | GSE179680 | GEO

Inducible keratinocyte-specific Mettl3-deficient mice develop spontaneous skin lesions

Project description:We conducted RNA sequencing analysis on skin tissues obtained from spontaneous inflammatory skin lesions in keratinocyte-specific Mettl3 knockout (K14CreERT2;Mettl3fl/fl) mice and their controls (Mettl3fl/fl). In brief, we observed spontaneous skin inflammation in the tail of K14CreERT2;Mettl3fl/fl mice 2-3 weeks following tamoxifen injection. The objective of this study was to investigate the impact and underlying mechanism of Mettl3 in epidermal keratinocytes regarding skin inflammation

2024-08-20 | GSE269796 | GEO

Mettl3-mediated m6A modification controls postnatal liver development by modulating Hnf4a-centred regulatory network [Liver RNA-seq]

Project description:RNA sequencing of livers tissues from control and hepatocyte-specific Mettl3 knockout with ALB-Cre (Mettl3 cKO) mice at different time points after birth.

2022-05-26 | GSE198512 | GEO

Mettl3 deficiency in epidermal keratinocytes exacerbates psoriasis-like inflammation [MeRIPseq_mice]

Project description:We analyzed epidermal samples from keratinocyte-specific knockout Mettl3 (K14CreERT2;Mettl3fl/fl) mice and their controls (Mettl3fl/fl) in imiquimod-induced psoriasis-like skin lesions. Briefly, we established an imiquimod-induced psoriasis model in K14CreERT2;Mettl3fl/fl mice and their controls after tamoxifen injection, and epidermal samples were separated and collected from the skin lesions of the mice after 3 or 6 days of modeling (n=3 per group). The aim of this study was to investigate the mechanism by which Mettl3-mediated epidermal m6A methylation affects skin inflammation.

2024-08-20 | GSE268745 | GEO

ATAC-seq of liver samples in Mettl3 flox/flox and hepatocyte-specific Mettl3 knockout (HKO) mice

Project description:Purpose: The goal of this study is to determine whether hepatic deletion of Mettl3 affects chromatin accessibility. Methods: Liver samples were pooled from livers of Mettl3 HKO and Mettl3 flox/flox mice (n=4 for each group). Nuclei was extracted from liver samples, and the nuclei pellet was resuspended in the Tn5 transposase reaction mix. The transposition reaction was incubated at 37°C for 30 min. Equimolar Adapter1 and Adatper 2 were added after transposition, PCR was then performed to amplify the library. After the PCR reaction, libraries were purified with the AMPure beads and library quality was assessed with Qubit. The clustering of the index-coded samples was performed on a cBot Cluster Generation System using TruSeq PE Cluster Kit v3-cBot-HS (Illumina) according to the manufactuer’s instructions. After cluster generation, the library preparations were sequenced on an Illumina NovaSeq 6000 platform and 150 bp paired-end reads were generated. ATAC-seq analysis was performed using a standard protocol. Results: The hepatic chromatin accessibility in Mettl3 flox/flox and HKO mice were characterized.

2021-10-29 | GSE141245 | GEO

METTL3 promotes translation in human cancer cells

Project description:we find METTL3 associates with polyribosomes and promotes translation. METTL3 depletion inhibits translation, and both wild-type and catalytically inactive METTL3 promote translation when tethered to the 3' untranslated region (UTR) of a reporter mRNA. Mechanistically, METTL3 enhances mRNA translation through an interaction with the translation initiation machinery. m6A seq in A549 and H1299 cells, RNA seq in METTL3 knockdown cells

2016-07-03 | E-GEOD-76367 | biostudies-arrayexpress

Hepatocyte Ploidy Is a Diversity Factor for Liver Homeostasis.

Project description:Polyploidy, the existence of cells containing more than one pair of chromosomes, is a well-known feature of mammalian hepatocytes. Polyploid hepatocytes are found either as cells with a single polyploid nucleus or as multinucleated cells with diploid or even polyploid nuclei. In this study, we evaluate the degree of polyploidy in the murine liver by accounting both DNA content and number of nuclei per cell. We demonstrate that mouse hepatocytes with diploid nuclei have distinct metabolic characteristics compared to cells with polyploid nuclei. In addition to strong differential gene expression, comprising metabolic as well as signaling compounds, we found a strongly decreased insulin binding of nuclear polyploid cells. Our observations were associated with nuclear ploidy but not with total ploidy within a cell. We therefore suggest ploidy of the nuclei as an new diversity factor of hepatocytes and hypothesize that hepatocytes with polyploid nuclei may have distinct biological functions than mono-nuclear ones. This diversity is independent from the well-known heterogeneity related to the cells' position along the porto-central liver-axis.

| S-EPMC5671579 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data