Expression data for LGG exposure to C. elegnas
Ontology highlight
ABSTRACT:
ORGANISM(S): Caenorhabditis elegans synthetic construct
PROVIDER: GSE190701 | GEO | 2021/12/12
REPOSITORIES: GEO
Similar Datasets
Project description:Expression data for LGG exposure to C. elegnas
| PRJNA788128 | ENA
Project description:Analysis of human primary macrophages after live Lactobacillus rhamnosus GG (LGG) or LC705 stimulation for 6h and 24h. The results reveal novel mechanisms for probiotics-induced activation of the healthy human innate immune system. Macrophages are phagocytic cells of the innate immune system that perform sentinel functions to initiate appropriate responses to surrounding stimuli. Macrophages that reside at mucosa encounter ingested bacteria. Our understanding of the responses elicited by nonpathogenic bacteria in human innate immune system is limited. Lactobacillus are nonpathogenic bacteria commonly used in food and as supplements with health-promoting probiotic potential. In this study, we have utilized global gene expression profiling to compare the responses of human primary macrophages to two closely related, well-characterized L. rhamnosus strains LGG and LC705. Our results demonstrate that live LGG and LC705 induced quantitatively different gene expression in macrophages. A gene ontology analysis revealed functional similarities and differences in responses to LGG and LC705. Both LGG and LC705 induced IL-1b production in macrophages that required caspase-1 activity. LC705 but not LGG induced a strong type I IFN-dependent gene activation that correlated with the ability of LC705 to prevent influenza A virus replication and production of viral proteins in macrophages. Differentiated 7d human primary macrophages from 18 healthy individuals were stimulated with either live L. rhamnosus GG (LGG) or LC705 for 6 h and 24 h in RPMI medium containing penicillin and streptomycin. As a control, macrophages were stimulated with the medium only. The experiment was performed three times, each time with cells from six different individuals (samples 1-3). For each experiment, macrophages were stimulated separately as described, and macrophages from different donors were pooled after each stimulation experiment. Extracted RNA was hybridized to AffymetrixM-BM-. U133-plus2.0 GeneChipM-BM-. arrays.
2013-03-18 | E-GEOD-20940 | biostudies-arrayexpress
Project description:YAMC (young adult mouse colon) cells are a conditionally immortalized mouse colonic intestinal epithelial cell line derived from the Immortimouse.Prior to each experiment, cells were plated at a density of 7.5 x 105 cells per p100mm dish.Cells were treated with LGG (the probiotic Lactobacillus GG ) conditioned media overnight, then harvested the following day. RNA were extracted with Trizol and purified with Qiagen kit. Affymetrix microarray chip Mouse 430A containing 19,000 murine genes was run in duplicate(experiment on 7-24-03 and 1-22-04 ). Data were analyzed using Affymetrix Genechip Operating Software (GCOS, Version 1.0) In each case; LGG treatment was compared to mock treatment controls. Results are expressed as fold change of treated cells as compared to controls, as calculated using GENESPRING software (Version 4.2.1, Silicon Genetics, Mountain View, CA), Statistical analysis was performed using D chip. DNA microarray experiments demonstrate that epithelial cell hsp70 is one of the most highly upregulated genes in response to LGG-CM treatment Keywords: repeat sample
2004-11-09 | GSE1940 | GEO
Project description:Analysis of human primary macrophages after live Lactobacillus rhamnosus GG (LGG) or LC705 stimulation for 6h and 24h. The results reveal novel mechanisms for probiotics-induced activation of the healthy human innate immune system. Macrophages are phagocytic cells of the innate immune system that perform sentinel functions to initiate appropriate responses to surrounding stimuli. Macrophages that reside at mucosa encounter ingested bacteria. Our understanding of the responses elicited by nonpathogenic bacteria in human innate immune system is limited. Lactobacillus are nonpathogenic bacteria commonly used in food and as supplements with health-promoting probiotic potential. In this study, we have utilized global gene expression profiling to compare the responses of human primary macrophages to two closely related, well-characterized L. rhamnosus strains LGG and LC705. Our results demonstrate that live LGG and LC705 induced quantitatively different gene expression in macrophages. A gene ontology analysis revealed functional similarities and differences in responses to LGG and LC705. Both LGG and LC705 induced IL-1b production in macrophages that required caspase-1 activity. LC705 but not LGG induced a strong type I IFN-dependent gene activation that correlated with the ability of LC705 to prevent influenza A virus replication and production of viral proteins in macrophages.
2013-03-18 | GSE20940 | GEO
Project description:To elucidate the molecular mechanism underlying lifespan reduction induced by PM2.5 exposure in Caenorhabditis elegans, we performed global gene expression profiling by RNA-sequencing technology, and compared the gene expression pattern change induced by PM2.5 exposure.
2023-02-22 | GSE214215 | GEO
Project description:Aging is under genetic control in C. elegans but the mechanisms of lifespan regulation are not completely known. MicroRNAs (miRNAs) regulate various aspects of development and metabolism and one miRNA has been previously implicated in lifespan. Here we show that multiple miRNAs change expression in C. elegans aging, including novel miRNAs, and that mutations in several of the most up-regulated miRNAs lead to lifespan defects. Some act to promote normal lifespan and stress resistance while others inhibit these phenomena. We find that these miRNAs genetically interact with genes in the DNA damage checkpoint response pathway and in the insulin signaling pathway. Our findings reveal that miRNAs both positively and negatively influence lifespan. Since several miRNAs up-regulated during aging regulate genes in conserved pathways of aging and thereby influence lifespan in C. elegans, we propose that miRNAs may play important roles in stress response and aging of more complex organisms.
2011-01-01 | GSE24510 | GEO
Project description:Aging is under genetic control in C. elegans but the mechanisms of lifespan regulation are not completely known. MicroRNAs (miRNAs) regulate various aspects of development and metabolism and one miRNA has been previously implicated in lifespan. Here we show that multiple miRNAs change expression in C. elegans aging, including novel miRNAs, and that mutations in several of the most up-regulated miRNAs lead to lifespan defects. Some act to promote normal lifespan and stress resistance while others inhibit these phenomena. We find that these miRNAs genetically interact with genes in the DNA damage checkpoint response pathway and in the insulin signaling pathway. Our findings reveal that miRNAs both positively and negatively influence lifespan. Since several miRNAs up-regulated during aging regulate genes in conserved pathways of aging and thereby influence lifespan in C. elegans, we propose that miRNAs may play important roles in stress response and aging of more complex organisms. 4 sample examined: Wild-type (N2) and long-lived daf-2(e1379) animals at days 0 and 10 of adulthood
2011-01-01 | E-GEOD-24510 | biostudies-arrayexpress
Project description:Candida albicans is an inhabitant of mucosal surfaces in healthy humans but also the most common cause of fungal nosocomial blood stream infections, associated with high morbidity and mortality. As such life-threatening infections often disseminate from superficial mucosal infections we aimed to study the use of probiotic Lactobacillus rhamnosus GG (LGG) in prevention of mucosal C. albicans infections. Here, we demonstrate that LGG protects oral epithelial tissue from damage caused by C. albicans in our in vitro model of oral candidiasis. Furthermore, we provide insights into the mechanisms behind this protection and dissect direct and indirect effects of LGG on C. albicans pathogenicity. C. albicans viability was not affected by LGG. Instead, transcriptional profiling using RNA-Seq indicated dramatic metabolic reprogramming of C. albicans. Additionally, LGG had a significant impact on major virulence attributes, including adhesion, invasion, and hyphal extension, whose reduction, consequently, prevented epithelial damage. This was accompanied by glucose depletion and repression of ergosterol synthesis, caused by LGG, but also due to blocked adhesion sites. Therefore, LGG protects oral epithelia against C. albicans infection by preventing fungal adhesion, invasion and damage, driven, at least in parts, by metabolic reprogramming due to nutrient limitation caused by LGG.
2017-09-14 | GSE97755 | GEO