Impact of miR-143-3p and miR-145-5p overexpression on human M238P melanoma cells
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PROVIDER: PRJNA721324 | ENA |
REPOSITORIES: ENA
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Project description:To identify putative novel specific targets of miR-143-3p and miR-145-5p, we overexpressed these miRNAs in BRAFV600E mutant human M238P melanoma cells using synthetic mimics or a synthetic “negative” control mimic (miR-Neg). RNA samples were harvested 48 hours post-transfection and 2 independent experiments were carried out.
2021-12-29 | GSE171880 | GEO
Project description:Rationale: Currently, there are no blood-based biomarkers with clinical utility for acute ischemic stroke (IS). microRNAs (miRNAs) show promise as disease markers due to their cell-type specific expression patterns and stability in peripheral blood. Objective: To identify circulating miRNAs associated with acute IS, determine their temporal course up to 90 days post-stroke, and explore their utility as an early diagnostic marker. Methods and Results: We used RNA sequencing to study expression changes of circulating miRNAs in a discovery sample of 20 IS patients and 20 matched healthy control subjects (HCs). We further applied qRT-PCR in independent samples for validation (40 IS patients and 40 matched controls), replication (200 IS patients, 100 HCs), and in 72 patients with transient ischemic attacks (TIA). Sampling of patient plasma was done immediately upon hospital arrival. We identified, validated, and replicated three differentially expressed miRNAs, which were upregulated in IS patients compared to both HCs (miR-125a-5p [1.8-fold; P=1.5x10-6], miR-125b-5p [2.5-fold; P=5.6x10-6], and miR-143-3p [4.8-fold; P=7.8x10-9]) and TIA patients (miR-125a-5p: P=0.003, miR-125b-5p: P=0.003, miR-143-3p: P=0.005). Longitudinal analysis of expression levels up to 90 days after stroke revealed a normalization to control levels for miR-125b-5p and miR-143-3p starting at day two, while miR-125a-5p remained elevated. Levels of all three miRNAs depended on platelet numbers in a platelet spike-in experiment, but were unaffected by chemical hypoxia in N2a cells and in experimental stroke models. In a random forest classification, miR-125a-5p, miR-125b-5p and miR-143-3p differentiated between HCs and IS patients with an area under the curve (AUC) of 0.90 (sensitivity: 85.6%; specificity: 76.3%), which was superior to multimodal cranial computed tomography obtained for routine diagnostics (sensitivity: 72.5%) and previously reported biomarkers of acute IS (neuron specific enolase: AUC=0.69, interleukin 6: AUC=0.82). Conclusions: A set of circulating miRNAs (miR-125a-5p, miR-125b-5p, miR-143-3p) associates with acute IS and might have clinical utility as an early diagnostic marker.
2018-02-22 | GSE110993 | GEO
Project description:This is a prospective-retrospective study to determine if the expression of the miRNA’s miR-31-3p and miR-31-5p are prognostic of patient outcomes or predictive of the benefit from anti-EGFR therapy in stage III Colon Cancer. The present study will utilize FFPE tumor samples collected from patients enrolled in the PETACC-8 study conducted by the Fédération Francophone de Cancérologie Digestive (FFCD). This phase 3 clinical trial prospectively randomized fully resected stage III colon cancer patients to receive adjuvant treatment with either FOLFOX-4 plus cetuximab or FLOFOX-4 alone.
| 2260465 | ecrin-mdr-crc
Project description:mRNA profiling of mouse ureters comparing wild-type ureter vs. ureters from mice having whole body deletion of miR-143 and miR-145 which results in abnormal ureter peristalsis and hydronephrosis We used microarrays to detail the global program of gene expression in wild-type and miR-143/145-deficient ureters which revealed dysregulation of genes linked to smooth muscle morphology and function.
2014-10-08 | GSE58274 | GEO
Project description:mRNA profiling of mouse ureters comparing wild-type ureter vs. ureters from mice having whole body deletion of miR-143 and miR-145 which results in abnormal ureter peristalsis and hydronephrosis We used microarrays to detail the global program of gene expression in wild-type and miR-143/145-deficient ureters which revealed dysregulation of genes linked to smooth muscle morphology and function. Two condition experiment: wild type vs miR-143/145 KO; biological replicates: individual mice - 2 wild type, 2 mutant. One replicate per array.
2014-10-08 | E-GEOD-58274 | biostudies-arrayexpress
Project description:Breast cancer (BC) is a commonly identified life-threatening type of cancer and a major cause of death among women worldwide. Several microRNAs (miRs), including miR-143-5p, have been reported to be vital for regulating hallmarks of cancer; however, the effect of miR-143-5p on BC requires further exploration. The present study performed bioinformatics analysis on GSE42072 and GSE41922 datasets from the National Center for Biotechnology Information Gene Expression Omnibus (GEO) database to identify miR-143-5p expression patterns. Furthermore, miR-143-5p expression was detected in BC cell lines and tissues via reverse transcription-quantitative PCR. Post-transfection with miR-143-5p mimics, Cell Counting Kit-8, colony formation and Transwell assays were performed to explore the effects of miR-143-5p on BC cell proliferation, colony formation, and migration. The association of miR-143-5p with the hypoxia-inducible factor-1α (HIF-1α)-associated glucose transporter 1 (GLUT1) pathway was explored via western blotting, immunofluorescence and dual-luciferase reporter assay. The present study detected high expression of miR-143-5p in BC tissue of the GSE42072 and serum of the GSE41922 datasets by GEO chip analysis. Additionally, the expression levels of miR-143-5p were decreased in BC tissues compared with those in adjacent healthy tissues, and low miR-143-5p expression was associated with a poorer prognosis and shorter survival time in patients with BC. In vitro, miR-143-5p expression levels were decreased in BC cells, and transfection with miR-143-5p mimics suppressed BC cell proliferation, colony formation, migration. Furthermore, miR-143-5p targeted the HIF-1α-related GLUT1 pathway, and inhibited HIF-1α and GLUT1 expression. Additionally, HIF-1α agonists reversed the miR-143-5p-induced inhibition during tumorigenesis. In conclusion, miR-143-5p exhibited low expression in BC tissues, and suppressed BC cell proliferation, colony formation, migration. Moreover, the antitumor effects of miR-143-5p targeted the HIF-1α-related GLUT1 pathway.
2022-02-26 | E-MTAB-11160 | biostudies-arrayexpress
Project description:Background: Though exosomes, as the by-products of human umbilical cord mesenchymal stem cells (hUC-MSCs), have been demonstrated to be an effective therapy for traumatic spinal cord injury (SCI), it remains unclear through which manner exosomes act. Aim: In order to figure out whether exosomes attenuate lesion size of SCI by the amelioration of neuronal injury triggered by secondary inflammatory storm and induction of inner motivation of neurite outgrowth, we designed and performed this experiment. Methods: We determined absolute contents of all exosomal miRNAs and investigated the potential mechanisms of miR-199a-3p/145-5p in inducing neurite outgrowth in vivo and vitro. Results: miR-199a-3p/145-5p, which were relatively top-ranking miRNAs in exosomes, promoted PC12 cells differentiation suppressed by lipopolysaccharide (LPS) in vitro through the modulation of NGF/TrkA pathway. We also demonstrated that Cblb was the direct target of miR-199a-3p and Cbl was the direct target of miR-145-5p. Cblb and Cbl genes knock down revealed that TrkA ubiquitylation level significantly decreased, subsequently, activating the NGF/TrkA downstream pathways Akt and Erk. In return, overexpression of Cblb and Cbl suggested that TrkA ubiquitylation level significantly increased, subsequently, inactivating the NGF/TrkA downstream pathways Akt and Erk. Western blot and co-immunoprecipitation confirmed the direct interaction between TrkA and Cblb, TrkA and Cbl. In vivo experiment, exosomal miR-199a-3p/145-5p were found to up-regulate TrkA expression in the lesion site and promote locomotor function of SCI rats as well. Conclusion: In summary, our study suggested that hUC-MSCs derived exosomes may treat SCI by transferring miR-199a-3p/145-5p to neurons, and modulating TrkA ubiquitylation, and strengthening the NGF/TrkA signaling pathway in SCI rats.
2020-12-08 | GSE159814 | GEO
Project description:A growing body of literature has proposed cell-autonomous tumor suppressor functions for the mir-143~145 cluster in a variety of human cancers, including lung adenocarcinoma, and has reported therapeutic benefits of delivering mir-143 and mir- 145 to tumors. In contrast to these studies, we found that depletion or forced expression of mir-143 and mir-145 in an autochthonous mouse model of lung adenocarcinoma did not affect tumor development. Surprisingly, we observed that loss of mir-143~145 from the tumor microenvironment significantly reduced tumor burden, indicating a non-cell- autonomous role for these miRNAs in promoting tumorigenesis. By examining the expression patterns of different cell populations isolated in vivo from tumor-bearing lungs using an integrated computational approach, we identified a role for mir-145 in stimulating the proliferation of endothelial cells by downregulating an inhibitory kinase, Camk1d, which prevents mitotic entry. As a consequence, tumors in mir-143~145- deficient animals exhibited diminished hallmarks of neo-angiogenesis, increased apoptosis and their expansion appeared limited by the tumor’s ability to co-opt the alveolar vasculature. These findings show that expression of the mir-143~145 cluster in the tumor stroma promotes rather than suppresses tumorigenesis and cautions against the use of these miRNAs as agents in cancer therapeutics.
2016-05-21 | GSE71877 | GEO
Project description:We analyzed the expression profiles of hsa-miR-145-5p or hsa-miR-31-5p-targeting genes relating to invasion or migration after co-overexpression of hsa-miR-145-5p and 31-5p Gene expression profiles of U87 cells after co-transfection with hsa-miR-145-5p and 31-5p mimics, and U87 cells after transfection miR mimic negative control
2016-06-23 | E-GEOD-83643 | biostudies-arrayexpress
Project description:Lineage dedifferentiation towards a mesenchymal-like state displaying myofibroblast and fibrotic features is a common mechanism of adaptive and resistance to targeted therapy in melanoma. Here we show that the anti-fibrotic drug Nintedanib is active to normalize the fibrous ECM network, enhance the efficacy of MAPK-targeted therapy and delay tumor relapse in a pre-clinical model of melanoma. Acquisition of this resistant phenotype and its reversion by Nintedanib pointed to miR-143/-145 pro-fibrotic cluster as a driver of this mesenchymal-like phenotype. Upregulation of the miR-143/-145 cluster under BRAFi/MAPKi therapy was observed in melanoma cells in vitro and in vivo and was associated with an invasive/undifferentiated profile. The 2 mature miRNAs generated from this cluster, miR-143-3p and miR-145-5p collaborated to mediate transition towards a drug resistant undifferentiated mesenchymal-like state by targeting Fascin actin-bundling protein 1 (FSCN1), modulating the dynamic crosstalk between the actin cytoskeleton and the ECM through the regulation of focal adhesion dynamics and mechanotransduction pathways. Our study brings insights into a novel miRNA-mediated regulatory network that contributes to non-genetic adaptive drug resistance and provides proof-of-principle that preventing MAPKi-induced pro-fibrotic stromal response is a viable therapeutic opportunity for patients on targeted therapy.
2021-12-29 | GSE171883 | GEO