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Landscape of m6A modification in haematopoietic system unveils an essential role of IGF2BP2 in preserving haematopoietic stem cell function

ABSTRACT: Landscape of m6A modification in haematopoietic system unveils an essential role of IGF2BP2 in preserving haematopoietic stem cell function

PROVIDER: PRJNA698365 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13593100_1.fastq.gz	Fastqsanger.gz
	SRR13593100_2.fastq.gz	Fastqsanger.gz
	SRR13593200_1.fastq.gz	Fastqsanger.gz
	SRR13593200_2.fastq.gz	Fastqsanger.gz
	SRR13593101_1.fastq.gz	Fastqsanger.gz

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Similar Datasets

Landscape of m6A modification in haematopoietic system unveils an essential role of IGF2BP2 in preserving haematopoietic stem cell function

Project description:N6-methyladenosine (m6A) is an abundant modification on mRNA, and plays critical functions in various cellular processes, including cell fate determination and lineage transition. However, the landscape and dynamics of m6A modification in haematopoietic system remain unknown. Here, we delineate a comprehensive m6A landscape across haematopoietic hierarchy and uncover that IGF2BP2 is required for preserving haematopoietic stem cells (HSCs) function. Our data reveal a marked cell-type- and haematopoietic-lineage-specific m6A landscape. Intriguingly, most m6A modifications arise in the early stat of haematopoiesis, and are critical in defining cellular states of HSCs. Moreover, m6A modification is the major factor in determining mRNA abundance in HSCs. Importantly, we find that higher expression of m6A reader IGF2BP2 is critical in controlling gene expression states and the functional maintenance of HSCs. IGF2BP2 deficiency induces apoptosis and quiescence loss, and substantially impairs the reconstitution capacity of HSCs. In addition, deletion of IGF2BP2 increases the mitochondrial activity of HSCs. Mechanistically, IGF2BP2 stabilizes Bmi1 mRNA in an m6A-dependent manner, which represses the expression of mitochondria-related genes. Collectively, our results present a fascinating portrait of m6A modification during haematopoiesis, and uncover a key role of IGF2BP2 in maintaining HSCs function by regulating Bmi1 stability and restraining mitochondrial activity.

2021-10-26 | GSE165863 | GEO

Inhibition of the m6A Reader IGF2BP2 as a Strategy against T-cell Acute Lymphoblastic Leukemia

Project description:N6-methyladenosine (m6A) reader Insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) participates in the initiation and growth of cancers by communicating with various targets. Here, we found IGF2BP2 is highly expressed in T-ALL. Gain and loss of IGF2BP2 demonstrated IGF2BP2 was essential for T-ALL cell proliferation in vitro and loss of IGF2BP2 prolonged animal survival in a human T-ALL xenograft model. Mechanistically, IGF2BP2 directly bound to T-ALL oncogene NOTCH1 via an m6A dependent manner.

2022-09-15 | GSE205503 | GEO

Inhibition of the m6A Reader IGF2BP2 as a Strategy against T-cell Acute Lymphoblastic Leukemia

Project description:T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive malignant leukemia with extreme limited treatment for relapsed patients. N6‐methyladenosine (m6A) reader Insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) participates in the initiation and growth of cancers by communicating with various targets. Here, we found IGF2BP2 is highly expressed in T-ALL. Gain and loss of IGF2BP2 demonstrated IGF2BP2 was essential for T-ALL cell proliferation in vitro and loss of IGF2BP2 prolonged animal survival in a human T-ALL xenograft model. Mechanistically, IGF2BP2 directly bound to T-ALL oncogene NOTCH1 via an m6A dependent manner. Furthermore, we identified a small-molecule IGF2BP2 inhibitor JX5 and treatment of T-ALL with JX5 showed similar functions as knockdown of IGF2BP2. These findings not only shed light on the role of IGF2BP2 in T-ALL, but also provide an alternative γ‑Secretase inhibitors (GSI) therapy to treat T-ALL.

2022-07-04 | GSE207323 | GEO

Dynamics of m6A RNA methylome during leukemogenesis reveals a role of IGF2BP2-PRMT6-MFSD2A signaling axis in maintaining AML stem cells [IGF2BP2 RNA-seq]

Project description:Our data reveal that RNA m6A displays a sharp transition during leukemogenesis and involves in acquiring stem cell properties of leukemia stem cells (LSCs). We find that m6A reader IGF2BP2 and protein arginine methyltransferase PRMT6 play key roles in the acquisition of LSCs properties. Genetical deletion and pharmacological inhibition of PRMT6 delayed AML development. Mechanistically, IGF2BP2 regulates PRMT6 expression by stabilizing its mRNA in an m6A-dependent manner. PRMT6 further suppresses the expression of lipid transporter MFSD2A by establishing inactive H3R2me2a in its promoter region. Loss of PRMT6 and IGF2BP2 upregulates the expression of MFSD2A that increases the uptake of docosahexaenoic acid. Collectively, our findings uncover a critical role of IGF2BP2-PRMT6-MFSD2A signaling axis in AML development, and provide a promising therapeutic strategy for targeting LSCs.

2023-06-20 | GSE210278 | GEO

The m6A Reader IGF2BP2 Regulates Glutamine Metabolism and Represents a Therapeutic Target in Acute Myeloid Leukemia [Ribo-seq]

Project description:We report that m6A reader IGF2BP2 participates in the regulation of glutamine metabolism in AML. To further clarify whether IGF2BP2 knockdown (KD) leads to translational inhibition, we perform Ribo-seq in control and IGF2BP2 KD cells.

2022-11-01 | GSE211618 | GEO

The m6A Reader IGF2BP2 Regulates Glutamine Metabolism and Represents a Therapeutic Target in Acute Myeloid Leukemia [RNA-seq]

Project description:We report that m6A reader IGF2BP2 participates in the regulation of glutamine metabolism in AML. Targeting IGF2BP2 with our developed inhibitor CWI1-2 shows promising therapeutic efficacy in AML.To explore the mechanism of the inhibitor, we performed RNA-seq in AML cells upon treatment with CWI1-2 or DMSO. On the other hand, to distinguish the mechanism between IGF2BP2 and YTHDF2, we compare RNA-seq data of IGF2BP2 KD with YTHDF2 KD.

2022-11-01 | GSE199204 | GEO

The m6A reader IGF2BP2 regulates macrophage phenotypic activation and inflammatory diseases by stabilizing TSC1 and PPARγ

Project description:Phenotypic polarization of macrophages is regulated by a milieu of cues in the local tissue microenvironment. Currently, little is known about how the intrinsic regulators modulate pro-inflammatory (M1) versus pro-healing (M2) macrophages activation. Here, we observed that insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) -deleted macrophages exhibited enhanced M1 phenotype and promoted DSS induced colitis development. However, the IGF2BP2-/- macrophages were refractory to IL4 induced activation and alleviated cockroach extract induced pulmonary allergic inflammation. Molecular studies indicated IGF2BP2 switched M1 macrophages to M2 activation by targeting tuberous sclerosis 1 (TSC1) via an N6-methyladenosine-dependent manner. Additionally, we also showed a signal transducer and activators of transcription 6 (STAT6) - high mobility group AT-hook 2 (HMGA2) -IGF2BP2-peroxisome proliferator activated receptor-γ (PPARγ) axis involves in M2 macrophages differentiation. These findings highlight a key role of IGF2BP2 in regulation of macrophages activation and imply a potential therapeutic target of macrophages in the inflammatory diseases.

2021-03-15 | GSE162128 | GEO

IMP2/IGF2BP2 HITS-CLIP from E13.5 mouse brain

Project description:HITS-CLIP is performed for the RNA-binding protein, IMP2/IGF2BP2, from E13.5 mouse brain.

2016-06-06 | E-MTAB-3636 | biostudies-arrayexpress

m6A modification promotes miR-133a repression during cardiac development and hypertrophy via IGF2BP2.

Project description:Both N6-methyladenosine (m6A) RNA modification and microRNAs (miRNAs) are common regulatory mechanisms for gene post-transcription by modulating mRNA stability and translation. They also share the same 3'-untranslated regions (UTRs) regions for their target gene. However, little is known about their potential interaction in cell development and biology. Here, we aimed to investigate how m6A regulates the specific miRNA repression during cardiac development and hypertrophy. Our multiple lines of bioinformatic and molecular biological evidence have shown that m6A modification on cardiac miR-133a target sequence promotes miR-133a repressive effect via AGO2-IGF2BP2 (Argonaute 2-Insulin-like growth factor 2 mRNA binding protein 2) complex. Among 139 cardiac miRNAs, only the seed sequence of miR-133a was inversely complement to m6A consensus motif "GGACH" by sequence alignment analysis. Immunofluorescence staining, luciferase reporter, and m6A-RIP (RNA immunoprecipitation) assays revealed that m6A modification facilitated miR-133a binding to and repressing their targets. The inhibition of the miR-133a on cardiac proliferation and hypertrophy could be prevented by silencing of Fto (FTO alpha-ketoglutarate dependent dioxygenase) which induced m6A modification. IGF2BP2, an m6A binding protein, physically interacted with AGO2 and increased more miR-133a accumulation on its target site, which was modified by m6A. In conclusion, our study revealed a novel and precise regulatory mechanism that the m6A modification promoted the repression of specific miRNA during heart development and hypertrophy. Targeting m6A modification might provide a strategy to repair hypertrophic gene expression induced by miR-133a.

| S-EPMC8257704 | biostudies-literature

Hinokiflavone resists HFD-induced obesity by promoting apoptosis in an IGF2BP2-mediated Bim m6A modification dependent manner

Project description:Obesity has emerged as a major health risk on a global scale. Natural small molecules, such as hinokiflavone (HF) extracted from plants like cypress, exhibit diverse chemical structures and low synthesis costs. Using HFD-induced obese mice models, we found that HF suppresses obesity by inducing apoptosis in adipose tissue. Adipocyte apoptosis helps maintain tissue health by removing aging, damaged, or excess fat cells, crucial in preventing obesity and metabolic diseases. We found that HF can specifically bind to insulin-like growth factor 2 mRNA binding protein 2 (IGF2BP2) to promote the stability of N6-methyladenosine (m6A) -modified Bim, inducing mitochondrial outer membrane permeabilization (MOMP). MOMP leads to Caspase9/3-mediated adipocyte mitochondrial pathway apoptosis, alleviating obesity induced by a high-fat diet. HF offers a controlled means of adipocyte apoptosis for weight loss. This study reveals the potential of small molecules like HF in developing new therapeutic approaches in drug development and biomedical research.

2024-10-16 | GSE270326 | GEO

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