Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Differential Gene Expression and mRNA decay in Wild-Type and Myeloid-specific TTP Knock-out macrophages using RNA-Seq

ABSTRACT: Members of the tristetraprolin (TTP) family of RNA-binding proteins can bind to and promote the decay of specific transcripts containing AU-rich motifs. ZFP36 (TTP) is best known for regulating cytokine expression in myeloid cells; however, the mammalian paralogues ZFP36L1 and ZFP36L2 have not been viewed as important in controlling inflammation. To study potential functional overlaps of these three TTP family proteins in myeloid cells, we developed myeloid-specific knock-out (M-KO) mice of these genes, singly and together. M-Zfp36-KO mice exhibited a mild inflammatory syndrome late in life, while M-Zfp36l1-KO and M-Zfp36l2-KO mice had no apparent spontaneous phenotypes. Mice with simultaneous deficiency of all three TTP family members in myeloid cells developed a severe, spontaneous, inflammatory phenotype, with a median survival of 8 weeks. Macrophages derived from these mice contained many more stabilized transcripts than cells from M-Zfp36-KO mice, many encoding pro-inflammatory cytokines and chemokines. Our findings emphasize the importance of all three family members, acting in concert, in myeloid cell function.

ORGANISM(S): Mus musculus

PROVIDER: GSE229922 | GEO | 2023/10/20

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Differential Gene Expression and mRNA decay in Wild-Type and Myeloid-specific TTP Family Member Triple (M-Triple) Knock-out macrophages using RNA-Seq

Project description:Members of the tristetraprolin (TTP) family of RNA-binding proteins can bind to and promote the decay of specific transcripts containing AU-rich motifs. ZFP36 (TTP) is best known for regulating cytokine expression in myeloid cells; however, the mammalian paralogues ZFP36L1 and ZFP36L2 have not been viewed as important in controlling inflammation. To study potential functional overlaps of these three TTP family proteins in myeloid cells, we developed myeloid-specific knock-out (M-KO) mice of these genes, singly and together. M-Zfp36-KO mice exhibited a mild inflammatory syndrome late in life, while M-Zfp36l1-KO and M-Zfp36l2-KO mice had no apparent spontaneous phenotypes. Mice with simultaneous deficiency of all three TTP family members in myeloid cells developed a severe, spontaneous, inflammatory phenotype, with a median survival of 8 weeks. Macrophages derived from these mice contained many more stabilized transcripts than cells from M-Zfp36-KO mice, many encoding pro-inflammatory cytokines and chemokines. Our findings emphasize the importance of all three family members, acting in concert, in myeloid cell function.

2023-10-20 | GSE229923 | GEO

RNA-binding Protein ZFP36L2 Downregulates Helios Expression and Suppresses the Function of Regulatory T Cells

Project description:The zinc finger protein 36-like 2, ZFP36L2, is a member of a small family of RNA-binding proteins composed by ZFP36 (also known as tristetraprolin, TTP), ZFP36L1 and ZFP36L2 in humans, with corresponding murine orthologs. These proteins bind to adenine uridine-rich element (ARE) in the 3’untranslated region of target messenger RNA and stimulate target degradation. ZFP36 functions as an anti-inflammatory modulator in murine models of inflammatory diseases by down-regulating the production of inflammatory cytokines such as tumor necrosis factor-alpha. However, how ZFP36L1 and ZFP36L2 alter the function of CD4+ T cells is not completely understood. We addressed this issue by searching for the target genes of ZFP36L2 by comprehensive transcriptome analysis. We observed that ZFP36L2 is highly expressed in naïve CD4+ T cells; however, when CD4+ T cells are stimulated with T cell receptors, ZFP36L2 expression is rapidly reduced in both humans and mice. Among CD4+ T cell populations, the expression levels of ZFP36L2 in regulatory T cells (Tregs) were lower than those in naïve or effector CD4+ T cells. RNA-sequence analysis revealed that the forced expression of ZFP36L2 decreased Ikzf2 (encoding Helios) expression in Foxp3+ Tregs and inhibited the ability of induced Tregs (iTregs). ZFP36L2 destabilized the 3’untranslated region of Ikzf2 mRNA, which contains AU-rich elements. These results indicate that ZFP36L2 reduces the expression of Ikzf2 and suppresses iTreg function, suggesting that the inhibition of ZFP36L2 in iTregs could be a therapeutic strategy for autoimmune diseases.

2020-05-21 | GSE150937 | GEO

Roles of Zfp36l1 and Zfp36l1 in retinal development

Project description:We report our study of the function of two members of the TTP (tristetraprolin) mRNA binding protein family, Zfp36l1 and Zfp36l2, in retinal development. We found that Zfp36l1 and Zfp36l2 were expressed in retinal progenitor cells during development and Müller glial cells and photoreceptors in the mature retina. Our analysis of the mutant retinas showed that, whereas the single knockout retinas appeared largely normal, the double knockout (DKO) retina manifested decreased RPC proliferation and increased differentiation of multiple retinal cell types. RNA-seq analysis not only confirmed the imbalance of proliferation and differentiation in the DKO retina but also revealed Zfp36l1 and Zfp36l2 interact with multiple signaling pathways including the sonic hedgehog pathway and the Notch pathway, to regulate this process.

2021-09-01 | GSE158718 | GEO

ZFP36L2-mRNA Interaction: Drawing general rules based on transcriptomic analysis

Project description:In this study we focus on identifying potential physiological targets of ZFP36L2 (Zinc finger protein like 2 or L2), one of the three primate members of the ZFP36 protein family. Most studies on ARE specificity of this small family were conducted using the prototypical family member, ZFP36 or TTP; however, less is known about the other family member’s specificity. Previous studies of ZFP36L2 target mRNAs identified a high proportion of transcription factors in two different systems, cells from the erythrocyte lineage and oocytes. However, there is minimal overlap between the genes identified in these studies and those identified here using mouse spleens lacking ZFP36L2 (L2-cKO). This observation suggests that ZFP36L2 targeting is occurring in a highly tissue specific manner. Aiming to understand what factors govern this potential tissue specificity, we characterized the differentially expressed genes in our L2-cKO mouse model in the spleen, an organ that expresses L2 at high levels in humans and mice. We performed transcriptome-wide analysis in RNA spleen samples from mice lacking ZFP36L2 (L2-cKO) and normally expressing (WT). Differential gene expression (DEG) of WT vs. L2-cKO spleens revealed 549 up regulated and 603 down regulated genes. Nine genes were validated in qPCR assays.

2021-10-01 | GSE168729 | GEO

The effect of ZFP36L1 deficiency on gene expression in the U2OS osteosarcoma cancer cell line

Project description:Post-transcriptional regulation of gene expression by RNA binding proteins (RBPs), one of the major classes of proteins encoded by the human genome, is well established. ZFP36L1 and its protein family members, ZFP36 and ZFP36L2, function as RBPs that primarily regulate gene expression at the post-transcriptional level by binding to adenine uridine (AU) rich elements (AREs) in the 3′ untranslated region (3′UTR) of certain mRNAs and mediating ARE-dependent mRNA decay. In this study, using CRISPR/Cas9 ZFP36L1 gene-editing, we generated ZFP36L1 deficient U2OS cellular models. The aim of the RNASeq experiment was to compare the gene expression profile in wild-type U2OS cells compared to ZFP36L1 deficient U2OS cells. Loss of functional ZFP36L1 leads to widespread changes in gene expression that are associated with dysregulation of KRAS signalling.

2024-06-04 | GSE268088 | GEO

An essential role for ZFP36 RNA-binding proteins in regulatory T cells reinforces immune homeostasis [bulk RNA-seq]

Project description:T regulatory (Treg) cells play an essential role in suppressing the response of immune effector cells. The zinc finger protein 36 (ZFP36) family of RNA binding proteins (RBP) have been demonstrated to have crucial roles in development, stress responses and inflammation. Treg-restricted deletion of ZFP36L1 leads to a loss of immune homeostasis with an expansion of effector cell subsets and over-production of inflammatory cytokines, with the phenotype exacerbated with the combined deletion of ZFP36L2. Single cell RNA seq analyses revealed a Treg transcriptional profile that was biased towards an activated phenotype. We report that ZFP36L1 and ZFP36L2 play a key role in regulating Treg sensitivity to cytokine signalling. By limiting the IFNg signalling pathway these RBP influence Th-type cell transcriptional programs and promote Treg responsiveness to IL-2 and IL-7. Together our results reveal cell intrinsic effects of these RBP important for Treg function.

2024-08-08 | GSE244619 | GEO

An essential role for ZFP36 RNA-binding proteins in regulatory T cells reinforces immune homeostasis [single cell RNA-seq]

2024-08-08 | GSE240517 | GEO

Bulk RNA-seq analysis of WT and tristetraprolin (TTP)-knockout basophils treated with antigen/IgE stimulation

Project description:Basophils play crucial roles in type 2 immune responses, such as chronic allergic inflammation and protective immunity against parasites. However, the molecular mechanisms regulating basophil activation and effector molecule production remain poorly understood. To investigate the role of RNA-binding proteins (RBPs), we first analyzed the gene expression of CCCH zinc finger proteins in antigen/IgE-stimulated basophils. Among these proteins, we identified that Zfp36, encoding tristetraprolin (TTP), was the most significantly upregulated gene. Therefore, we focused on the functions of TTP in basophils. We generated TTP-KO mice using the CRISPR-Cas9 method and conducted bulk RNA-seq analysis of antigen/IgE-stimulated basophils from wild-type (WT) and TTP-knockout (TTP-KO) mice. TTP-KO basophils exhibited elevated mRNA expression of pro-inflammatory mediators, such as Il4, Il13, Areg, Ccl3, and Cxcl2, compared to WT basophils. These data suggest that TTP is a key regulator of basophil activation, controlling the mRNA expression of inflammatory mediators.

2024-11-17 | GSE272532 | GEO

mRNA expression in Zfp36L2 knockout E14.5 fetal liver

Project description:ZFP36L2, zinc finger protein 36, C3H type-like 2 (also known as Brf2, Erf2, Tis11D) is a member of the tristetraprolin (TTP; Zfp36) family of tandem CCCH zinc finger proteins that can bind to AU-rich elements (AREs) in the 3'-untranslated region of mRNAs, leading to their deadenylation and subsequent degradation. We have generated Zfp36l2 knockout mice. Knockout mice were born at the expected Mendelian frequency, but within several weeks of birth they died rather suddenly with pallor and frequent intestinal hemorrhage. These mice exhibited pancytopenia, decreased hematopoietic progenitor cells from fetal liver and yolk sac, and ineffective hematopoietic stem cells. Since ZFP26L2 is likely to function as an ARE-containing mRNA destabilizing protein, we were interested in identifying any abnormally stabilized transcripts in fetal livers from the Zfp36l2 knockout mice whose protein product may directly or indirectly affect hematopoietic stem cell function.

2009-08-06 | GSE15146 | GEO

Expansion of Interleukin-22-producing Innate Lymphoid Cells in Tristetraprolindeficient mice protects against Dextran Sulfate Sodium-induced Colitis

Project description:Tristetraprolin (TTP, encoded by Zfp36) is an RNA-binding protein that plays a major role in the control of inflammation. Zfp36 -/-mice spontaneously develop a complex multi-organ inflammatory syndrome that shares many features with spondyloarthritis. Herein, we show that Zfp36 -/-mice are paradoxically protected from Dextran Sulfate Sodium (DSS)-induced colitis. This effect was maintained on a Rag2 -/- background but was lost in Rag2 -/-Il2rg -/-Zfp36 -/-mice that lack innate lymphoid cells (ILCs). Furthermore, we observed a local expansion of type 3 ILCs in the lamina propria of Zfp36 -/-mice. These cells produced large amounts of Interleukin (IL)-22 and were expanded in response to systemic inflammation. Finally, we show that IL-22 contributed to protection of Zfp36 -/-mice against DSSinduced colitis but had a minor impact on their spontaneous inflammatory syndrome. Taken together, these data highlight the complex role of TTP in the control of organ-specific inflammation.

2023-08-01 | GSE236230 | GEO

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