IL6R is a target of miR-197 in human keratinocytes
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ABSTRACT:
PROVIDER: PRJNA650204 | ENA |
REPOSITORIES: ENA
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Project description:Background: Psoriasis is a chronic inflammatory disorder with cutaneous and systemic manifestations and substantial negative effects on patients' life quality. MicroRNAs (miRNAs) are post-transcriptional regulators of gene expression. Evidence suggests that miRNAs play a role in the pathogenesis of psoriasis. Previously studies, from others and by us, show-specific miRNAs that are differentially expressed between the psoriasis lesion and healthy skin. One of those miRNAs is miR-197-3p whose expression is down-regulated in the psoriatic lesions compared to normal or uninvolved psoriatic skin. In order to understand miR-197's role in psoriasis, we found that it could modulate IL-22 and IL-17 signaling. Objectives: We aimed to identify additional biochemical targets of miR-197 in psoriasis. Methods: We have chosen to apply a transcriptome-wide biochemical approach (PAR-CLIP) to search for new targets of miR-197 in keratinocytes. Results: in this work, using PAR-CLIP, we found an additional biochemical target of miR-197, one of the subunits of the receptor to IL-6. IL-6R is known to be up-regulated in psoriasis and even was considered as a possible therapeutic target. Conclusions: From the present data and our previous studies it appears that miR-197 is a major regulator of the interaction between immune system cells and keratinocytes.
2020-08-25 | GSE155538 | GEO
Project description:MicroRNAs are noncoding RNA species comprising 18–23 nucleotides that regulate host-virus interaction networks. Here, we showed that enterovirus A71 infection in human rhabdomyosarcoma (RD) involved miR-197 expression. miR-197 can regulate virus replication in the context of viral RNA synthesis via the transfection of its mimic into RD cells. We employed a mass spectrometry-based quantitative proteomic stable isotope labeling with amino acids in cell culture (SILAC) approach for the identification of miR-197 target genes by transfecting mimetic miR-197 into RD cells, and the differential expression of prospective target proteins was identified. A total of 1,822 genes were repeatedly and considerably downregulated in miR-197-transfected RD cells, 106 of which were predicted to have seed sites by TargetScan. Seven of the selected 8 genes potentially related to viral replication and immune response were confidently validated as direct miR-197 targets using a luciferase (untranslated region (3'-UTR)) reporter assay. The expression of three selected endogenous molecules (ITGAV, ETF1, and MAP2K1 (MEK1)) was significantly reduced when RD cells were transfected with an miR-197 mimic. Our results provide a database of miR-197 targets, which is potentially of interest in the area of viral pathogenesis and other research fields.
2018-10-24 | PXD010585 | Pride
Project description:In general, microRNAs (miRNAs) regulate gene expression by repressing translation or promoting the degradation of their target genes. To strategically identify direct microR-197 (miR-197) target genes, we first performed mRNA microarray analyses of A549, PC14, and PC14CDDP cells that were transiently transfected with either pre-miR-197 or LNA-miR-197 and their controls. We observed that 1037 predicted target genes exhibited expression alterations consistently across the three different lung cancer cell lines.
2017-02-09 | GSE56266 | GEO
Project description:First-line treatment for osteosarcoma includes chemotherapy and surgery. However, the five-year survival rate of refractory osteosarcoma remains unsatisfactory. Osteosarcoma cancer stem cells, possessing stemness and chemoresistance, are one of the critical causes for poor response to chemotherapy. Elucidating regulatory signaling pathways of osteosarcoma cancer stem cells may provide a rationale for improving regimens against chemoresistant osteosarcoma. Methotrexate (MTX)-resistant osteosarcoma cells were established. microRNA expression profiles were used for detecting differentially expressed microRNA in resistant clones and the parental cells. microRNA target databases were employed to predict potential microRNA and mRNA interaction. Flow cytometry was performed to measure stem cell marker Prominin-1 (CD133) positive cells. Im-munofluorescence staining was applied to detect CD133 expression. miR-197-3p mimic or an-ti-miR-197-3p stably transfected cells were used to generate xenograft models. In the study, we found miR-197-3p was increased in MTX-resistant cell lines. Overexpression of miR-197-3p en-hanced the expression of cancer stem cell markers CD133, Octamer-binding protein 4 (OCT4), Transcription factor SOX-2 (SOX2), and Homeobox protein NANOG (NANOG), as well as chemoresistance-associated genes ATP-dependent translocase ABCB1 (ABCB1) and Broad substrate specificity ATP-binding cassette transporter ABCG2 (ABCG2), whereas miR-197-3p knockdown inhibited stemness and recovered sensitivity to MTX. We also classified the tumor suppressor Speckle-type POZ protein-like (SPOPL) as a target of miR-197-3p. The miR-197-3p mutation that cannot combine SPOPL promoter regions was unable to sustain stemness or chemoresistance. Collectively, we discovered miR-197-3p conferred osteosarcoma stemness and chemotherapy resistance by targeting SPOPL, prompting promising therapeutic candidates for refractory oste-osarcoma treatment. miRNA qPCR assay
2023-01-31 | GSE223857 | GEO
Project description:HaCaT human keratinocytes were transfected with pre-miR-483-3p or pre-miR-NC. RNA samples were harvested 48h post-transfection and mRNA profiles were determined with pan genomic arrays. Two biological replicates were performed for each comparison. Data were normalized using a dye-swap method.
2011-06-29 | GSE19931 | GEO
Project description:The aim of the study was to describe the function of miR-146a in human skin keratinocytes in relation to chronic skin diseases. miR-146a precursor and the control were transfected into human primary keratinocytes treated with IFN-gamma, TNF-alpha or left untreated. mRNA expression profiles of each conditions were detected.
2014-01-01 | E-MTAB-1739 | biostudies-arrayexpress
Project description: Not available
| S-EPMC4160297 | biostudies-literature
Project description:Next to genetic alterations, it is being recognized that the cellular environment also acts as a major determinant in onset and progression of disease. In cases where different cell types contribute to the final disease outcome, this imposes environmental challenges as different cell types likely differ in their extracellular dependencies. A number of skin diseases, including psoriasis is characterized by a combination of keratinocyte hyperproliferation and immune cell activation. Activation of immune cells involves increased glucose consumption thereby intrinsicly limiting glucose availability for other cell types. Thus, these type of skin diseases require metabolic adaptations that enable coexistence between hyperproliferative keratinocytes and activated immune cells in a nutrient-limited environment. Hsa-microRNA-31-5p (miR-31) is highly expressed in keratinocytes within the psoriatic skin. Here we show that miR-31 expression in keratinocytes is induced by limited glucose availability and enables increased survival of keratinocytes under limiting glucose conditions, by increasing glutamine metabolism. In addition, miR-31 induced glutamine metabolism results in secretion of specific metabolites (aspartate and glutamate) but also secretion of immuno-modulatory factors. We show that this miR-31-induced secretory phenotype is sufficient to induce Th17 cell differentiation, a hallmark of psoriasis. Inhibition of glutaminase (GLS) using CB-839 impedes miR31-induced metabolic rewiring and secretion of immuno-modulatory factors. Concordantly, pharmacological targeting of GLS alleviated psoriasis pathology in a mouse model of psoriasis. Together our data illustrate an emerging concept of metabolic interaction across cell compartments that characterizes disease development, which can be employed to design effective treatment options for disease, as shown here for psoriasis.
2023-02-06 | PXD029030 | Pride
Project description:To find out potiential target gene of miR-146a,we have employed whole genome microarray expression profiling as a discovery platform to identify genes with the potential to target miR-146a. Human keratinocytes was transfected with either miR-146a mimics (Pre-146a) or negative control (Pre-NC) for 48h, then RNA was extracted for whole genome microarray expression profiling.
2019-02-07 | GSE126137 | GEO
Project description:To identify putative novel specific targets of miR-203-3p, we overexpressed this miRNAs in primary keratinocytes using a synthetic mimic (pre-miR-203a-3p) or a synthetic “negative” control mimic (pre-miR-ctrl). RNA samples were harvested 30 hours post-transfection and 3 independent experiments were carried out.
2023-09-06 | GSE223523 | GEO