Depletion of miR-144/451 alleviates anemia in β-thalassemic mice
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ABSTRACT:
PROVIDER: PRJNA860212 | ENA |
REPOSITORIES: ENA
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Project description:Tto investigate whether ablation of miR-144/451 is deleterious for th3+/- mice, we crossed miR-144/451 knockout (mKO) mice (with mild anemia at baseline)13 with th3+/- mice (with severe anemia). We found that mKO/th3+/- double-mutant mice exhibited dramatic improvement in anemia. To explore the mechanism of anemia improvement in mKO/th3+/- mice, we fractionated erythroblasts from bone marrow of four genotypes mice, including WT,mKO, th3+/-,mKO/th3+/- mice,for microarray analysis.
2023-01-13 | GSE208608 | GEO
Project description:miR-144/451 cluster is highly conversed in different species, miRbase database shows miR-144/451 cluster is constituted by miR-144-3p, miR-144-5p, miR-451a. Low-expression of miR-144/451 was closely related with the risk for esophageal cancer We used microarrays to identify the differentially expressed genes in ECa9706 over expressing miR-144/451 cluster
2018-08-08 | GSE118249 | GEO
Project description:microRNA miR-144/451 is highly expressed during erythropoiesis. We deleted the miR-144/451 gene locus in mice and compared the transcriptomes of miR-144/451-null bone marrow erythroid precursors to stage-matched wild-type control cells.
2010-07-15 | GSE21041 | GEO
Project description:microRNA miR-144/451 is highly expressed during erythropoiesis. We deleted the miR-144/451 gene locus in mice and compared the transcriptomes of miR-144/451-null bone marrow erythroid precursors to stage-matched wild-type control cells. Ter119+/CD71+/FSC-high bone marrow erythroblasts were sorted directly into Trizol LS reagent. Total RNAs extracted from three miR-144/451 knock-out and three wide type mice were analyzed using Affymetrix Mouse Genome 430 2.0 Arrays.
2010-07-15 | E-GEOD-21041 | biostudies-arrayexpress
Project description:To investigate the function miR-144/451 on the function of CD8+ cells, we sorted the CD8a+ cells from wild type and miR-144/451 knockout mice, and then performed gene expression profiling analysis using data obtained from RNA-seq.
2022-05-11 | GSE202260 | GEO
Project description:MicroRNAs inhibit gene expression by recruiting the RNA-induced silencing complex (RISC) to mRNAs in a process termed RNA interference (RNAi). While it is generally accepted that RNAi modulates gene expression pervasively, the number of mRNAs bound and repressed by miRNAs in vivo in individual cell types remains unknown, with estimates ranging from a few hundred genes to many thousands. We examined microRNA activities in primary cells by combining genetic loss of function with RNA-sequencing, quantitative proteomics and High-Throughput Sequencing of RNA isolated by Crosslinking Immunoprecipitation (HITS-CLIP), focusing on miR-144/451, the most highly expressed microRNA locus during red blood cell (RBC) formation. We show that Argonaute (Ago) protein binds over one thousand different mRNAs in a miR-144/451-dependent manner, accounting for one third of all Ago-bound mRNAs. However, only about 100 mRNAs are stabilized in RBC precursors after ablation of the miR-144/451 locus. Thus, Ago-miRNA complexes destabilize only a small subset of bound mRNAs, probably no more than a few hundred in erythroblasts under physiological conditions. Our integrated approach identified more than 50 new miR-144/451 target mRNAs, including Cox10, which facilitates assembly of the mitochondrial cytochrome c oxidase (COX) electron transport complex. Loss of miR-144/451 resulted in increased Cox10 expression, accumulation of the COX complex, and increased mitochondrial membrane potential with no change in mitochondrial mass. Thus, miR-144/451 represses mitochondrial respiration during erythropoiesis by inhibiting Cox10.
2018-10-01 | GSE104357 | GEO
Project description:MicroRNAs inhibit gene expression by recruiting the RNA-induced silencing complex (RISC) to mRNAs in a process termed RNA interference (RNAi). While it is generally accepted that RNAi modulates gene expression pervasively, the number of mRNAs bound and repressed by miRNAs in vivo in individual cell types remains unknown, with estimates ranging from a few hundred genes to many thousands. We examined microRNA activities in primary cells by combining genetic loss of function with RNA-sequencing, quantitative proteomics and High-Throughput Sequencing of RNA isolated by Crosslinking Immunoprecipitation (HITS-CLIP), focusing on miR-144/451, the most highly expressed microRNA locus during red blood cell (RBC) formation. We show that Argonaute (Ago) protein binds over one thousand different mRNAs in a miR-144/451-dependent manner, accounting for one third of all Ago-bound mRNAs. However, only about 100 mRNAs are stabilized in RBC precursors after ablation of the miR-144/451 locus. Thus, Ago-miRNA complexes destabilize only a small subset of bound mRNAs, probably no more than a few hundred in erythroblasts under physiological conditions. Our integrated approach identified more than 50 new miR-144/451 target mRNAs, including Cox10, which facilitates assembly of the mitochondrial cytochrome c oxidase (COX) electron transport complex. Loss of miR-144/451 resulted in increased Cox10 expression, accumulation of the COX complex, and increased mitochondrial membrane potential with no change in mitochondrial mass. Thus, miR-144/451 represses mitochondrial respiration during erythropoiesis by inhibiting Cox10.
2018-10-01 | GSE104447 | GEO
Project description:MicroRNAs inhibit gene expression by recruiting the RNA-induced silencing complex (RISC) to mRNAs in a process termed RNA interference (RNAi). While it is generally accepted that RNAi modulates gene expression pervasively, the number of mRNAs bound and repressed by miRNAs in vivo in individual cell types remains unknown, with estimates ranging from a few hundred genes to many thousands. We examined microRNA activities in primary cells by combining genetic loss of function with RNA-sequencing, quantitative proteomics and High-Throughput Sequencing of RNA isolated by Crosslinking Immunoprecipitation (HITS-CLIP), focusing on miR-144/451, the most highly expressed microRNA locus during red blood cell (RBC) formation. We show that Argonaute (Ago) protein binds over one thousand different mRNAs in a miR-144/451-dependent manner, accounting for one third of all Ago-bound mRNAs. However, only about 100 mRNAs are stabilized in RBC precursors after ablation of the miR-144/451 locus. Thus, Ago-miRNA complexes destabilize only a small subset of bound mRNAs, probably no more than a few hundred in erythroblasts under physiological conditions. Our integrated approach identified more than 50 new miR-144/451 target mRNAs, including Cox10, which facilitates assembly of the mitochondrial cytochrome c oxidase (COX) electron transport complex. Loss of miR-144/451 resulted in increased Cox10 expression, accumulation of the COX complex, and increased mitochondrial membrane potential with no change in mitochondrial mass. Thus, miR-144/451 represses mitochondrial respiration during erythropoiesis by inhibiting Cox10.
2018-10-01 | GSE104441 | GEO
Project description:Nuclear factor (erythroid-derived 2)-like2 (Nrf2) and miR-144/451 regulate two well-established systems that have been identified to maintain redox homeostasis in erythroid cells by removing excess reactive oxygen species (ROS). Whether Nrf2 plays a role in the differentiation process during erythropoiesis has not been reported. In this study, we demonstrate that miR-144/451 gene knockout (KO) in mice dampens erythroid differentiation when 5-Fluorouridine is used to induce acute anemia. Surprisingly, inactivation of Nrf2 by crossing Nrf2 KO mice completely alleviates the delayed erythropoiesis in miR-144/451 KO mice. Nrf2 is a miR-144/451 target and depletion of miR-144/451 leads to the derepression of Nrf2, and thus an overexpression of Nrf2. Therefore, our findings indicate that persistent Nrf2 activation blocks erythroid maturation. We further reveal that even physiological levels of Nrf2 impair the erythroid differentiation. The underlying mechanism is that hyperactivity of Nrf2 leads to the sustained proliferation of erythroblasts partially by activation of Myc signaling. We also find that Nrf2 and miR-144/451 coordinate to scavenge ROS but do not phenotypically copy each other, indicating that they control two distinct anti-oxidant systems in erythroid cells. Furthermore, we find that miR-144/451 deficiency produces a more profound defect of erythropoiesis than dysfunctional Nrf2. Given that Nrf2 is ubiquitously expressed in tumor tissues, which facilitates cancer malignancy and chemoresistance; and that cancer is often accompanied by anemia that markedly inhibits antineoplastic treatment efficacy and anticancer immunity, our findings suggest that targeting Nrf2 holds great promise that not only harms cancer cells, but also reverses cancer-related anemia.
2022-12-28 | GSE192700 | GEO
Project description:Expression data of ECa9706 over expressing miR-144/451 cluster
| PRJNA484955 | ENA