Project description:We have employed whole genome microarray analysis to determine the transcriptional response of intestinal epithelial cells following treatment with bovine glycomacropeptide (GMP)
Project description:We have employed whole genome microarray analysis to determine the transcriptional response of intestinal epithelial cells following treatment with bovine colostrum fraction and 3'-Siallylactose.
Project description:In this study, we focused on the changes of mRNA expression in bovine oviduct epithelial cells in vitro co-cultured with embryos during preimplantation development in order to identify genes, which might be involved in embryo-maternal communication. For this purpose, we used large-scale cDNA microarray hybridizations to identify the genes differentially regulated in bovine oviduct epithelial cells (Boec) during in vitro culture. The main objective was to identify genes which are differentially expressed due to the presence or absence of bovine embryos on cell monolayers.
Project description:Shiga toxin-producing Escherichia coli (STEC) O157:H7 is a notorious foodborne pathogen capable of causing severe gastrointestinal infections in humans. The bovine rectoanal junction (RAJ) has been identified as a primary reservoir of STEC O157:H7, playing a critical role in its transmission to humans through contaminated food sources. Despite the relevance of this host-pathogen interaction, the molecular mechanisms behind the adaptation of STEC O157:H7 in the bovine RAJ and its subsequent infection of human colonic epithelial cells remain largely unexplored. This study aimed to unravel the intricate dynamics of STEC O157:H7 in two distinct host environments: bovine RAJ squamous epithelial (RSE) cells and human colonic epithelial cells. Comparative transcriptomics analysis was employed to investigate the differential gene expression profiles of STEC O157:H7 during its interaction with these cell types. The bacterial cells were cultured under controlled conditions to simulate the microenvironments of both bovine RAJ and human colonic epithelial cells. Using high-throughput RNA sequencing, we identified key bacterial genes and regulatory pathways that are significantly modulated in response to each specific host environment. Our findings reveal distinct expression patterns of virulence factors, adhesion proteins, and stress response genes in STEC O157:H7 grown in bovine RAJ cells as opposed to human colonic epithelial cells. Additionally, the comparative analysis highlights the potential role of certain genes in host adaptation and tissue-specific pathogenicity. Furthermore, this study sheds light on the potential factors contributing to the survival and persistence of STEC O157:H7 in the bovine reservoir and its ability to colonize and cause disease in humans.
Project description:<p>Divergence in the non-targeted metabolite profilings of bovine mammary epithelial cells (BMECs) were systematically captured with regard to 10 individual essential amino acid (EAA) availability. BMECs cultured in 6-well plates were first serum-starved overnight and subsequently assigned to 1 of 12 treatment media (n = 6). DMEM-F12 medium is the positive control treatment (POS), while DMEM-F12 medium devoid of all EAA served as the negative control treatment (NEG). A total of 10 treatments were NEG individually supplemented with arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan or valine (Sigma-Aldrich, MO, USA). Individual EAA were supplemented to achieve concentrations equal to those of POS. After 6-h treatment, all cell samples were taken at the same time, frozen in liquid nitrogen and stored at -80 °C until required.</p><p><br></p><p><strong>Untargeted metabolomics</strong> is reported in the current study <a href='https://www.ebi.ac.uk/metabolights/MTBLS7789' rel='noopener noreferrer' target='_blank'><strong>MTBLS7789</strong></a>.</p><p><strong>Targeted metabolomics</strong> is reported in <a href='https://www.ebi.ac.uk/metabolights/MTBLS3956' rel='noopener noreferrer' target='_blank'><strong>MTBLS3956</strong></a>.</p>
Project description:<p>Divergence in the targeted amino acid profilings of bovine mammary epithelial cells (BMECs) were systematically captured with regard to 10 individual essential amino acid (EAA) availability. BMECs cultured in 6-well plates were first serum-starved overnight and subsequently assigned to 1 of 12 treatment media (n = 6). DMEM-F12 medium is the positive control treatment (POS), while DMEM-F12 medium devoid of all EAA served as the negative control treatment (NEG). A total of 10 treatments were NEG individually supplemented with arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan or valine. Individual EAA were supplemented to achieve concentrations equal to those of POS. After 6-h treatment, all cell samples were taken at the same time, frozen in liquid nitrogen and stored at -80 °C until required.</p><p><br></p><p><strong>Targeted metabolomics</strong> is reported in the current study <a href='https://www.ebi.ac.uk/metabolights/MTBLS3956' rel='noopener noreferrer' target='_blank'><strong>MTBLS3956</strong></a>.</p><p><strong>Untargeted metabolomics</strong> is reported in <a href='https://www.ebi.ac.uk/metabolights/MTBLS7789' rel='noopener noreferrer' target='_blank'><strong>MTBLS7789</strong></a>.</p>
Project description:In this study, we focused on the changes of mRNA expression in bovine oviduct epithelial cells in vitro co-cultured with embryos during preimplantation development in order to identify genes, which might be involved in embryo-maternal communication. For this purpose, we used large-scale cDNA microarray hybridizations to identify the genes differentially regulated in bovine oviduct epithelial cells (Boec) during in vitro culture. The main objective was to identify genes which are differentially expressed due to the presence or absence of bovine embryos on cell monolayers. Global transcriptional profiling was performed using 13 days Bovine oviduct epithelial cells (Boec) cultured in vitro with SOF media RNA as control samples (BOEC_SOF_CTL, n=3) for comparison to the experimental samples taken at the same culture time (day 13) and stimulated by the presence of bovine embryos during the last 8 days of culture (BOEC_SOF+EMB, n=3).Gene expression analysis was carried out between Boec with or without stimulation of embryos representing a total of 6 slides (dye swap protocol).