Project description:Previous studies indicate that host phagocytes are regulated by a complex combination of pattern recognition receptors-signaling and miRNA inductions. We performed microRNA array to determine whether S. pneumoniae PfbA suppresses phagocytosis via miRNA inductions.
Project description:Analysis of gene expression changes associated with lentiviral vector mediated expression of pre-microRNA-150 expression in the AML cell lines PL21 and HL60 cells. To identify genes, direct putative miRNA-150 targets, biological and molecular functions and pathways that distinguish cells that express miR-150 from those that do not. Total RNA isolated from HL60 or PL21 cells transduced with pre-microRNA-150 or empty vector control and assayed by gene expresssion analysis 20 days post transduction. Two replicates were performed for each condition (miR-150 and control) in each of two cell lines (HL60 and PL21).
Project description:Analysis of gene expression changes associated with lentiviral vector mediated expression of pre-microRNA-150 expression in the AML cell lines PL21 and HL60 cells. To identify genes, direct putative miRNA-150 targets, biological and molecular functions and pathways that distinguish cells that express miR-150 from those that do not.
Project description:Cytarabine is the main drug for acute myeloid leukemia (AML) treatment; however, drug resistance hinders the treatment of AML. Although microRNA (miRNA) alteration is one of the well-recognized mechanisms underlying drug resistance in AML, few studies have investigated the role and function of miRNAs in the development of cytarabine resistance. In this study, total RNA was isolated from parental HL60 and cytarabine resistant HL60 (R-HL60) cells. Subsequently, miRNAs and mRNAs were detected using small RNA sequencing and gene expression array, respectively. The miRNAs and genes with ≥ 2-fold difference in expression between HL60 and R-HL60 cells were screened out. Negatively correlated miRNA–mRNA pairs were selected as candidate miRNA–mRNA target pairs by using the miRDB, Targetscan or miRTar databases. Functional enrichment analysis of differentially expressed genes (DEGs) included in the candidate miRNA–mRNA network was performed. The results revealed that CCL2, SOX9, SLC8A1, ICAM1, CXCL10, SIPR2, FGFR1, OVOL2, MITF, and CARD10 were simultaneously involved in seven GO pathways, namely the regulation of cell migration, regulation of locomotion, regulation of cellular component movement, cell migration, locomotion, cell motility, localization of cell. These genes were negatively correlated with the altered miRNAs (miR-1-3p, miR-155-5p, miR-1255b-5p, miR-200c-5p, miR-3609, miR-1285-3p, miR-124-3p, miR-146a-5p, miR-497a-5p, and miR-3150a-5p), suggesting that they are the potential targets of the miRNAs to regulate cell migration behavior or ability. Therefore, our results advance our understanding of the regulatory mechanism underlying cytarabine resistance development, specifically related to miRNAs.
Project description:Human Promyelocytic Leukemia Cell Line HL60 has been used extensively as a model for myeloid differentiation and leukemia. HL60-RG cell is its sub-line and shows a higher growth rate. In this study, we carried out a genome scan using SNP 10k mapping array on both cells. Comparative study on chromosomal changes of these cells will give us information on mechanism of tumor progression. Keywords: cell type comparison
Project description:The human promyelocytic cell line HL60/S4 can be differentiated into a granulocytic form with the addition of all-trans retinoic acid for 4 days. We investigated the conserved and differentiated responses to TNF in the granulocytic and promyelocytic forms of HL60/S4 cells.
Project description:Human Promyelocytic Leukemia Cell Line HL60 has been used extensively as a model for myeloid differentiation and leukemia. HL60-RG cell is its sub-line and shows a higher growth rate. In this study, we carried out a genome scan using SNP 10k mapping array on both cells. Comparative study on chromosomal changes of these cells will give us information on mechanism of tumor progression. Experiment Overall Design: Two samples HL60-NG cell and HL60-RG cel were analyzed by SNP 10k mapping array.