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Maintaining intestinal homeostasis is a key prerequisite for a healthy gut. Recent evidence points out that microRNAs (miRNAs) act at the epicenter of the signaling networks regulating this process. The fine balance in the interaction between gut microbiota, intestinal epithelial cells, and the host immune system is achieved by constant transmission of signals and their precise regulation. Gut microbes...
The gut microbiota is an important component of the human body and its immune‐modulating and metabolic activities are critical to maintain good health. Gut microbes, however, are sensitive to changes in diet, exposure to antibiotics, or infections, all of which cause transient disruptions in the microbial composition, a phenomenon known as dysbiosis. It is now recognized that microbial dysbiosis...
The etiology of colorectal cancer (CRC) has been linked to deficiencies in mismatch repair and adenomatous polyposis coli (APC) proteins, diet, inflammatory processes, and gut microbiota. However, the mechanism through which the microbiota synergizes with these etiologic factors to promote CRC is not clear. We report that altering the microbiota composition reduces CRC in APCMin/+MSH2−/− mice, and...
In recent years, our understanding of the mechanisms underlying colorectal carcinogenesis has vastly expanded. Underlying inflammation within the intestine, diet, and most recently, the gut microbiota, have been demonstrated to influence the development of colorectal cancer. However, since cancer is ultimately a genetic disease, these factors are thought to create genotoxic stress within the intestinal...
A two-component system consisting of the histidine kinase vancomycin-resistance-associated sensor and the response regulator vancomycin-resistance-associated regulator (VraR) allows Staphylococcus aureus to sense antibiotic-related cell wall stress and to mount a suitable response. An experimental structure of full-length VraR is not available yet, but previous work points to similarities between...
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