Project description:The expression level of miR-608 was found to be down regulated in several types of cancer. In our previous study, a single SNP in miR-608 (rs4919510) was found to be strongly associated with a higher risk of developing sepsis and multiple organ dysfunctions in all 3 independent study cohorts. However, the clinicopathological impact and the exact roles of miR-608 and its underlying molecular mechanisms in inflammation remain to be identified. In order to identify the exact terget gene of miR-608 in monocytes, we constructed lentiviral vectors with has-miR-608 inhibitor sequences and transfected U937 cells.We used microarrays to identified distinct classes of up-regulated genes during this process and look for possible target genes. U937 cells transfected by has-miR-608 inhibitor lentiviral vectors or negative control virus were analyzed. There are three samples in each group.
Project description:The expression level of miR-608 was found to be down regulated in several types of cancer. In our previous study, a single SNP in miR-608 (rs4919510) was found to be strongly associated with a higher risk of developing sepsis and multiple organ dysfunctions in all 3 independent study cohorts. However, the clinicopathological impact and the exact roles of miR-608 and its underlying molecular mechanisms in inflammation remain to be identified. In order to identify the exact terget gene of miR-608 in monocytes, we constructed lentiviral vectors with has-miR-608 inhibitor sequences and transfected U937 cells.We used microarrays to identified distinct classes of up-regulated genes during this process and look for possible target genes.
Project description:There are 19 differentially expressed microRNAs among new HIV-infected cases, old HIV-infected cases and healthy controls. Five microRNAs show trends in healthy controls, new HIV-infected cases and old HIV-infected cases, they are hsa-miR-1291, and hsa-miR-3609 with up-trends, and hsa-miR-3162-3p, hsa-miR-874-5p and hsa-miR-4258 with down-trends.
Project description:The goal of this experiment was to determine gene expression changes during Sendai virus infection as the result of expression or inhibition of miR-203 in A549 cells. The gene expression profiling experiment was performed with 4 groups (mock infected, Sendai virus infected, Sendai virus infeceted in the presence of exogenous miR-203, and Sendai virus infected in the presence of miR-203 inhibitor) with 3 biological replicates for each group. Total RNA was purified from A549 cells that were mock infected or infected with Sendai virus (Cantell strain, 5pfu/cell) alone or in the presence of miR-203 mimic or inhibitor for 10 hours.
Project description:Background. Human Metapneumovirus (HMPV) and Respiratory Syncytial Virus (RSV), are responsible for respiratory diseases mostly in children. In spite of the resemblance between these two pneumoviruses, they elicit a different extent of immune response. miRNAs are small non coding RNAs that regulate gene expression and are involved in numerous cellular processes including the immune system. Methodology. Human monocyte-derived dendritic cells (moDC) were differentiated from peripheral blood mononuclear cells and infected at an MOI of 3 for 24h. RNA was isolated to analyze the miRNAs transcription by high throughput sequencing using illumina technology. Principal findings. Infection with HMPV up-regulated the expression of hsa-miR-4448, while RSV infection induced significant expression of hsa-miR-30a-5p, hsa-miR-182-5p, hsa-miR-1913, hsa37, miR-4448 and hsa-miR-4634. Conclusions/Significance. In human monocyte derived dendritic cells (moDC), RSV and HMPV induced different profiles of miRNA expression. Understanding the changes of miRNA expression profiles by RSV and HMPV in immune cells will further our understanding of the differential immune response induced by these respiratory viruses
Project description:The purpose is to obtain samples for mRNA analysis in human U937 cells infected with Zaire Ebola virus wild-type in the deltaVP30 background and delta-mucin virus. Human U937 cells (monocyte-like) expressing the Ebola VP30 protein were infected with Zaire Ebola virus wild-type (wild) in the delta-VP30 background and delta-mucin virus (encodes a GP lacking the mucin domain) (mucin). Infected samples were collected in quintuplet; time-matched mocks were collected in quintuplet in parallel with infected samples. Time points: 0, 8, 18, and 30 h post-infection.
Project description:The purpose is to obtain samples for microRNA analysis in human U937 cells infected with Zaire Ebola virus wild-type in the ΔVP30 background and Δmucin virus.
Project description:The purpose is to obtain samples for mRNA analysis in human U937 cells infected with Zaire Ebola virus wild-type in the ΔVP30 background and Δmucin virus.
Project description:Elite controllers maintain HIV-1 viral loads below the limit of detection. The mechanisms responsible for this phenomenon are poorly understood. As microRNAs (miRNAs) are regulators of gene expression and some of them modulate HIV infection, we have studied the miRNA profile in plasma from HIV elite controllers and chronically infected individuals and compared against healthy donors. Several miRNAs correlate with CD4+ T cell count or with the known time of infection. No significant differences were observed between elite controllers and healthy donors; however, 16 miRNAs were different in the plasma of chronic infected versus healthy donors. In addition, levels of hsa-miR-29b-3p, hsa-miR-33a-5p and hsa-miR-146a-5p were higher in plasma from elite controllers than chronic infected and hsa-miR-29b-3p and hsa-miR-33a-5p overexpression significantly reduced the viral production in MT2 cells. Therefore, levels of circulating miRNAs might be of diagnostic and/or prognostic value for HIV infection. Additionally, hsa-miR-29b-3p and miR-33a-5p may be used in therapeutic strategies.
