Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Mesorectal Microbiome as a Prognostic Factor in Patients With Rectal Cancer

ABSTRACT: The equilibrium of intestinal microorganisms is essential for health an imbalance has been associated with an increased risk in the development of different pathologies; including colorectal cancer. Rectal cancer is the third most common neoplasm worldwide and the complete excision of the mesorectum is a major prognostic factor. The identification of microorganisms in the adipose tissue that surrounds the small intestine in inflammatory diseases, together with bacterial alterations found in colonic mucosa and feces in patients with rectal cancer in comparison with healthy individuals indicates that microbiome alteration plays an essential role in pathogenesis. The mesorectal microbiome in rectal cancer patients stills unknown and given its importance in the prognostic of the disease the goal of this study is to identify microbial profiles that allow predicting rectal cancer patients with a poor prognosis.

DISEASE(S): Rectal Neoplasms,Rectal Cancer

PROVIDER: 2371241 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

ACCESS DATA

Json Xml

Similar Datasets

Xenobiotics shape the physiology and gene expression of the active human gut microbiome

Project description:The human gut is colonized by trillions of microorganisms that influence human health and disease through the metabolism of xenobiotics, including therapeutic drugs and antibiotics. The diversity and metabolic potential of the human gut microbiome have been extensively characterized, but it remains unclear which microorganisms are active and which perturbations can influence this activity. Here, we use flow cytometry, 16S rRNA gene sequencing, and metatranscriptomics to demonstrate that the human gut contains distinctive subsets of active and damaged microorganisms, primarily composed of Firmicutes, which display marked temporal variation. Short-term exposure to a panel of xenobiotics resulted in significant changes in the physiology and gene expression of this active microbiome. Xenobiotic-responsive genes were found across multiple bacterial phyla, encoding novel candidate proteins for antibiotic resistance, drug metabolism, and stress response. These results demonstrate the power of moving beyond DNA-based measurements of microbial communities to better understand their physiology and metabolism. RNA-Seq analysis of the human gut microbiome during exposure to antibiotics and therapeutic drugs.

2012-10-30 | E-GEOD-38151 | biostudies-arrayexpress

Diet rapidly and reproducibly alters the human gut microbiome

Project description:Long-term dietary intake influences the structure and activity of the trillions of microorganisms residing in the human gut, but it remains unclear how rapidly and reproducibly the human gut microbiome responds to short-term macronutrient change. Here we show that the short-term consumption of diets composed entirely of animal or plant products alters microbial community structure and overwhelms inter-individual differences in microbial gene expression. The animal-based diet increased the abundance of bile-tolerant microorganisms (Alistipes, Bilophila and Bacteroides) and decreased the levels of Firmicutes that metabolize dietary plant polysaccharides (Roseburia, Eubacterium rectale and Ruminococcus bromii). Microbial activity mirrored differences between herbivorous and carnivorous mammals, reflecting trade-offs between carbohydrate and protein fermentation. Foodborne microbes from both diets transiently colonized the gut, including bacteria, fungi and even viruses. Finally, increases in the abundance and activity of Bilophila wadsworthia on the animal-based diet support a link between dietary fat, bile acids and the outgrowth of microorganisms capable of triggering inflammatory bowel disease. In concert, these results demonstrate that the gut microbiome can rapidly respond to altered diet, potentially facilitating the diversity of human dietary lifestyles. RNA-Seq analysis of the human gut microbiome during consumption of a plant- or animal-based diet.

2013-12-05 | E-GEOD-46761 | biostudies-arrayexpress

Genome-wide SNP signal intensity scanning to find genes differentiating cows with ovarian pathologies from healthy cows

Project description:Ovarian cysts and ovarian hypoplasia are common ovarian pathologies in cattle. The development of these pathologies can be attributed to factors such as uterine infection, stress, milk production, age, reproductive time and inherited genetics. The most common detection procedures are via rectal palpation and necropsy analysis. In this genome-wide study, we used the normalized signal intensity from Single Nucleotide Polymorphisms (SNP) to identify genes differentiating between cows suffering ovarian pathologies and healthy cows. For 4532 genes having at least 15 SNPs within their DNA sequence, statistical tests for equality of variance and means were applied and p values were calculated.

2017-08-22 | E-MTAB-4874 | biostudies-arrayexpress

High-throughput proteomic analysis of rectal cancer for prediction of non-complete response after concurrent chemoradiation therapy

Project description:Colorectal cancer (CRC) is the third most common lethal malignancy in Korea and worldwide. Rectal cancer patients occupy about 30% of CRC patients, and the majority of rectal cancer patients had locally advanced disease at diagnosis. The standard treatment of locally advanced rectal cancer (LARC) is neoadjuvant radiation therapy with concurrent chemotherapy (CCRT) followed by total mesorectal excision (TME). This multidisciplinary team approach improved local tumor control and overall survival of rectal cancer patients. High throughput proteomic analysis and machine learning algorithm identify DUOX2 (dual oxidase 2) as a novel biomarker for prediction of non-complete response after concurrent chemoradiation therapy for rectal cancer.High throughput proteomic analysis and machine learning algorithm identify DUOX2 (dual oxidase 2) as a novel biomarker for prediction of non-complete response after concurrent chemoradiation therapy for rectal cancer.

2023-03-11 | PXD023302 | Pride

Xenobiotics shape the physiology and gene expression of the active human gut microbiome

2012-10-30 | GSE38151 | GEO

Array comparative genomic hybridization data from 313 CLL specimens to study outcome associations

Project description:This study investigates genomic imbalance in chronic lymphocytic leukemia (CLL) and aims to identify genomic gains and losses with prognostic significance.

2013-09-07 | GSE40834 | GEO

Project description:Microbiome profiling in rectal cancer patients receiving definitive treatment

| PRJNA942305 | ENA

High intake of dietary sucrose induces sexually dimorphic metabolic adaptations in liver and adipose tissue

Project description:This data submission reports the effects of 12 weeks supplementaion of 10%w/v sucrose supplied in drinking water on the inguinal white adipose tissue mRNA profiles of male and female mice relative to control groups (littermates that received plain water instead). RNAseq was performed by Novogene and investigators performed all analyses downstream of readcount acquisition. Manuscript abstract: Almost all effective treatments for non-alcoholic fatty liver disease (NAFLD) involve reduction of adiposity, which suggests the metabolic axis between liver and adipose tissue is essential to NAFLD development. Since excessive dietary sugar intake may be an initiating factor for NAFLD, we have characterized the metabolic effects of liquid sucrose intake at concentrations relevant to typical human consumption in mice. We report that sucrose intake induces sexually dimorphic effects in liver, adipose tissue, and the microbiome; differences concordant with steatosis severity. We show that when steatosis is decoupled from impairments in insulin responsiveness, sex is a moderating factor that influences sucrose-driven lipid storage and the contribution of de novo fatty acid synthesis to the overall hepatic triglyceride pool. Our findings provide physiologic insight into how sex influences the regulation of adipose-liver crosstalk and highlight the importance of extrahepatic metabolism in the pathogenesis of diet-induced steatosis and NAFLD.

2021-03-01 | GSE151358 | GEO

Transcriptional analysis of locally advanced rectal cancer pre-therapeutic biopsies and post-therapeutic resections

Project description:Understanding transcriptional changes in locally advanced rectal cancer which are therapy-related and dependent upon tumour regression will drive stratified medicine in the rectal cancer paradigm

2018-11-01 | GSE94104 | GEO

Diet rapidly and reproducibly alters the human gut microbiome

2013-12-05 | GSE46761 | GEO