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To investigate the changes of the gene of glioma mice after Bifidobacterium administration

ABSTRACT: to investigate the changes of the gene of glioma mice after Bifidobacterium administration

PROVIDER: PRJNA1031162 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26472151_1.fastq.gz	Fastqsanger.gz
	SRR26472151_2.fastq.gz	Fastqsanger.gz
	SRR26472152_1.fastq.gz	Fastqsanger.gz
	SRR26472152_2.fastq.gz	Fastqsanger.gz
	SRR26472153_1.fastq.gz	Fastqsanger.gz

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to investigate the changes of the gene of glioma mice after Bifidobacterium administration

Project description:Differentially expressed genes (DEGs) between the Glioma and BIF groups were identified based on P < 0.05 and |log2 (fold change)| ≥1, among which 441 were up-regulated and 520 were down-regulated

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Effects of Bifidobacterium bifidum PRL2010 on gene expression in intestinal epithelial cells

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Bifidobacterium bifidum PRL2010 actively changes the expression profiles of human cell lines

Project description:We studied the global transcription profiling of human cell lines upon colonization with Bifidobacterium bifidum PRL2010 by using DNA microarrays. We decided to use HT29 monolayer as an in vitro model to investigate the molecular impact of B. bifidum PRL2010 on human intestinal transcriptome. HT29 monolayers cultivated at 15 days of post confluence were placed in contact with PRL2010 cells for a range of time spanning from 0 h, 1 h (T1), 2 h (T2) to 4 h (T4).

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Bifidobacterium bifidum PRL2010 actively changes the expression profiles of mouse

Project description:We studied the global transcription profiling of mouse upon colonization with Bifidobacterium bifidum PRL2010 by using DNA microarrays.

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Effects of Bifidobacterium bifidum PRL2010 on gene expression in intestinal epithelial cells

Project description:Analysis of gene expression in Caco-2 intestinal epithelial cells stimulated with Bifidobacterium bifidum PRL2010. We used microarrays to investigate gene expression in intestinal epithelial cells in response to Bifidobacterium bifidum PRL2010, in particular genes involved in mucin pathways. Caco-2 cells were grown in transwell plates to 4 days post-confluence. Cells were then incubated for 2h and 4h with Bifidobacterium bifidum PRL2010. The experiment was performed in duplicate. Caco-2 RNA was extracted and hybridized to Affymetrix NuGO_Hs1a52018 arrays.

2010-10-01 | E-GEOD-21976 | biostudies-arrayexpress

16s rDNA-sequencing of gut microbiota in Temozolomide-treated glioma mice

Project description:Purpose: Gut microbiota is associated with the progression of brain tumor. However, the alterations in the gut microbiota during glioma growth and temozolomide (TMZ) therapy remains to be understood. Methods: C57BL/6 male mice were implanted with GL261 glioma cells. TMZ/sodium carboxymethyl cellulose (SCC) was administered by gavage for five consecutive days (from 8 to 12 days after implantation). Fecal samples were collected before (T0) and on days 7 (T1), 14 (T2), and 28 (T3) after implantation. The gut microbiota was analyzed using 16S ribosomal DNA sequencing followed by absolute and relative quantitation analyses. Results: Nineteen genera were altered during glioma progression with the most dramatic changes in Firmicutes and Bacteroidetes phyla. During glioma growth, Lactobacillus abundance decreased at the earlier stage of glioma development (T1), and then gradually increased (T2, T3); Intestinimonas abundance exhibited a persistent increase; Anaerotruncus showed a transient increase and then a subsequent decrease. Twenty genera altered following TMZ treatment. The enrichment of Akkermansia and Bifidobacterium was observed only at the early stage following TMZ treatment (T2), but not at the later stage (T3). Additionally, the decrease of Anaerotruncus was slighter in TMZ group at T3 comparing to the vehicle group. The abundance of Intestinimonas increased constantly during the progression of glioma, but was unaffected by TMZ. Conclusions: Glioma development and progression resulted in altered gut microbiota. TMZ reversed the decrease of Anaerotruncus in glioma at T3, and increased the abundance of Bifidobacterium with no influence on the increase of Intestinimonas. Short-term and long-term effects of TMZ treatment on the bacterial communities may be differential. This study will improve understanding the role of gut microbiota in glioma, and help develop gut microbiota as a potential therapeutic target.

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Bifidobacterium longum mutant

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Metabolism of sialic acid by Bifidobacterium breve UCC2003

Project description:Bifidobacteria constitute a specific group of commensal bacteria which inhabit the gastrointestinal tract of humans and other mammals. Bifidobacterium breve UCC2003 has previously been shown to utilise several plant-derived carbohydrates that include cellodextrins, starch and galactan. In the current study, we investigate the ability of this strain to utilise the mucin- and human milk oligosaccharide (HMO)-derived carbohydrate, sialic acid. Using a combination of transcriptomic and functional genomic approaches, we identified a gene cluster dedicated to the uptake and metabolism of sialic acid. Furthermore, we demonstrate that B. breve UCC2003 can cross feed on sialic acid derived from the metabolism of 3’ sialyllactose, a HMO, by Bifidobacterium bifidum PRL2010.

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