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Full-Text Articles in Biochemistry, Biophysics, and Structural Biology
Microrna Cargo Of Extracellular Vesicles From Alcohol-Exposed Monocytes Signals Naive Monocytes To Differentiate Into M2 Macrophages, Banishree Saha, Fatemeh Momen-Heravi, Karen Kodys, Gyongyi Szabo
Microrna Cargo Of Extracellular Vesicles From Alcohol-Exposed Monocytes Signals Naive Monocytes To Differentiate Into M2 Macrophages, Banishree Saha, Fatemeh Momen-Heravi, Karen Kodys, Gyongyi Szabo
Gyongyi Szabo
Membrane-coated extracellular vesicles (EVs) released by cells can serve as vehicles for delivery of biological materials and signals. Recently, we demonstrated that alcohol-treated hepatocytes cross-talk with immune cells via exosomes containing microRNA (miRNAs). Here, we hypothesized that alcohol-exposed monocytes can communicate with naive monocytes via EVs. We observed increased numbers of EVs, mostly exosomes, secreted by primary human monocytes and THP-1 monocytic cells in the presence of alcohol in a concentration- and time-dependent manner. EVs derived from alcohol-treated monocytes stimulated naive monocytes to polarize into M2 macrophages as indicated by increased surface expression of CD68 (macrophage marker), M2 markers (CD206 …
Microrna Signature In Alcoholic Liver Disease, Shashi Bala, Gyongyi Szabo
Microrna Signature In Alcoholic Liver Disease, Shashi Bala, Gyongyi Szabo
Gyongyi Szabo
Alcoholic liver disease (ALD) is a major global health problem. Chronic alcohol use results in inflammation and fatty liver, and in some cases, it leads to fibrosis and cirrhosis or hepatocellular carcinoma. Increased proinflammatory cytokines, particularly TNF alpha, play a central role in the pathogenesis of ALD. TNF alpha is tightly regulated at transcriptional and posttranscriptional levels. Recently, microRNAs (miRNAs) have been shown to modulate gene functions. The role of miRNAs in ALD is getting attention, and recent studies suggest that alcohol modulates miRNAs. Recently, we showed that alcohol induces miR-155 expression both in vitro (RAW 264.7 macrophage) and in …
Circulating Micrornas In Exosomes Indicate Hepatocyte Injury And Inflammation In Alcoholic, Drug-Induced, And Inflammatory Liver Diseases, Shashi Bala, Jan Petrasek, Shiv Mundkur, Donna Catalano, Ivan Levin, Jeanine Ward, Hawau Alao, Karen Kodys, Gyongyi Szabo
Circulating Micrornas In Exosomes Indicate Hepatocyte Injury And Inflammation In Alcoholic, Drug-Induced, And Inflammatory Liver Diseases, Shashi Bala, Jan Petrasek, Shiv Mundkur, Donna Catalano, Ivan Levin, Jeanine Ward, Hawau Alao, Karen Kodys, Gyongyi Szabo
Gyongyi Szabo
MicroRNAs are fine tuners of diverse biological responses and are expressed in various cell types of the liver. Here we hypothesized that circulating microRNAs (miRNAs) may serve as biomarkers of liver damage and inflammation. We studied miRNA-122, which is abundant in hepatocytes, and miR-155, -146a, and -125b, which regulate inflammation in immune cells in mouse models of alcoholic liver disease (ALD), drug (acetaminophen, APAP)-induced liver injury (DILI), and Toll-like receptor (TLR) 9+4 ligand-induced inflammatory cell-mediated liver damage. We found that serum/plasma miR-122 correlated with alanine aminotransferase (ALT) increases in the liver damage caused by alcohol, APAP, and TLR9 (CpG)+4 (LPS) …