Effects of Laminins 332 and 411 on the Epithelial-Mesenchymal Status of Colorectal Cancer Cells.

The effects of laminins 332 and 411 (LM-332 and LM-411) on the epithelial-mesenchymal transformation of colorectal cancer cells (lines HT-29, HCT-116, and RKO) with different metastatic potential were studied. Culturing of RKO cells on both laminins was associated with modification of the cell shape, which became more spindle-like or stellate, and with higher expression of EMT-associated transcription factors SNAI1 and ZEB1. In addition, culturing on LM-332 led to a decrease in the expression of laminin α5 chain (LAMA5), while culturing on LM-411 led to an increase in the expression of a cell-cell junction component (DSP).

Expression of microRNA Genes MIR221, MIR222, and MIR181B1 Increases during Induction of Inflammation in the Endothelial Barrier Model.

We studied expression profile of microRNA and their target genes in human umbilical vein endothelial cells (HUVEC) during proinflammatory activation with TNFα. TNFα-induced activation of HUVEC was accompanied by a decrease in the expression of CDKN1B, HIST1H3D, and OIP5 genes that are the common target genes for mature microRNA encoded by MIR221, MIR222, and MIR181B1 genes, whose expression increases in activated cells. Proteins encoded by HIST1H3D and OIP5 genes are associated with chromatin compaction and cell cycle.

TNFα-Induced Expression of Transport Protein Genes in HUVEC Cells Is Associated with Enhanced Expression of Transcription Factor Genes RELB and NFKB2 of the Non-Canonical NF-κB Pathway.

Endothelial HUVEC cells used as an in vitro model of the endothelial monolayer in placental barrier were activated by TNFα in a dose of 2 ng/ml for 24 h. Significant changes in the expression of genes of the SLC family transport protein were observed: an increase in the expression of SLC7A2, SLC12A2, SLC9B2, SLC25A37, SLC16A9, and SLC41A2 and a decrease in the expression of SLC40A1. These transporters participate in the transport of iron, magnesium, sodium, potassium, and chloride ions, protons, and amino acids.

hsa-miR-1973 MicroRNA is Significantly and Differentially Expressed in MDA-MB-231 Cells of Breast Adenocarcinoma and Xenografts Derived from the Tumor.

The gene expression profiles of MDA-MB-231 cell line of breast cancer and xenografts derived from this tumor in murine model were analyzed using GeneChip Human Transcriptome array 2.0 platform (Affymetrix). A more than 1000-fold increase in the MIR1973 gene expression was observed in the xenografts compared to the original cell line.

On statistical relationship between ADRA2A expression and the risk of breast cancer relapse.

The search for novel parameters to predict the risk of relapse in breast cancer was conducted. Significant correlation between the risk of relapse and α-2A adrenergic receptor (ADRA2A) expression was revealed using public microarray datasets. This relationship was confirmed by validation on independent microarray dataset.