Project description:The interplay between the intestinal microbiota and host is critical to intestinal ontogeny and homeostasis. MicroRNAs (miRNAs) may be an underlying link. Intestinal miRNAs are microbiota-dependent and when shed in the lumen, affect resident microorganisms. Yet, longitudinal relationships between intestinal tissue miRNAs, luminal miRNAs, and luminal microorganisms have not been elucidated, especially in early life. Here, we investigated the postnatal cecal miRNA and microbiota populations, their relationship, and their impact on intestinal maturation in specific and opportunistic pathogen free mice; we also assessed if they can be modified by an intervention with allochthonous probiotic lactobacilli. We report that cecal and cecal content miRNA and microbiota signatures are temporally regulated, correlated, and modifiable by probiotics with implications for intestinal maturation. These findings help with understanding causal relationships within the gut ecosystem and provide a basis for preventing and managing their alterations in diseases throughout life.
2023-07-08 | GSE149418 | GEO
Project description:Cecal contents microorganisms
| PRJNA688780 | ENA
Project description:Cecal microorganisms of laying hens
| PRJNA732929 | ENA
Project description:Sequencing of cecal microorganisms in Broilers
| PRJNA783362 | ENA
Project description:Sequencing of cecal microorganisms in Broilers
| PRJNA783369 | ENA
Project description:Effect of bile acid on cecal microorganisms in geese
Project description:Chicken 60-mer oligonucleotide microarray, including 39854 cDNA and ESTs, entire Marek’s disease virus and avian influenza virus genomes, and 150 chicken microRNAs, was developed. Cecal tonsil, ileum, liver and spleen from 6 chickens were selected for hybridization to validate the microarray performance. There are 2886, 2886, 2660, 358, 3208 3355, and 3710 genes significantly expressed between liver and spleen, spleen and cecal tonsil, cecal tonsil and ileum, liver and cecal tonsil, liver and ileum, spleen and ileum at the P<10-7. Number of tissue specific genes for cecal tonsil, ileum, liver and spleen was 95, 71, 535, and 108, respectively with p < 10-7. More than 95% of spots had high SNR (>10). Keywords: characteristics of newly developed microarray using different normal tissue
Project description:Identification of bacterial antigens within cecal bacterial lysate was performed by using serum antibodies from control and DC-LMP1/CD40 animals for immunoprecipitation followed by label-free liquid chromatography tandem mass spectrometry (LC-MS/MS). Serum antibodies were coupled to beads and incubated with cecal bacterial lysate to bind target proteins. Upon immunoprecipitation, on-beads digestion of proteins followed by LC-MS/MS was performed. The resulting peak intensities were used for intensity-based quantification (iBAQ). Proteins identified with a fold change > 2 and a p-value < 0.05 were considered for further analyses.
Project description:The continuously remodeled extracellular matrix (ECM) plays a pivotal role in gastrointestinal health and disease, yet its precise functions remain elusive. In this project, we employed laser capture microdissection of cecal mucosa combined with low-input proteomics to investigate ECM remodeling during Salmonella-driven inflammation. To complement this, we probed how fibronectin fiber tension is altered using a mechanosensitive peptide probe. While fibronectin fibers in healthy intestinal tissue are typically stretched, fibronectin fiber relaxation occurred exclusively during late-stage infection at 72 hours and was localized to already existing clusters of infiltrated neutrophils in the cecal mucosa of Salmonella-infected mice.
Project description:Chicken 60-mer oligonucleotide microarray, including 39854 cDNA and ESTs, entire Marek’s disease virus and avian influenza virus genomes, and 150 chicken microRNAs, was developed. Cecal tonsil, ileum, liver and spleen from 6 chickens were selected for hybridization to validate the microarray performance. There are 2886, 2886, 2660, 358, 3208 3355, and 3710 genes significantly expressed between liver and spleen, spleen and cecal tonsil, cecal tonsil and ileum, liver and cecal tonsil, liver and ileum, spleen and ileum at the P<10-7. Number of tissue specific genes for cecal tonsil, ileum, liver and spleen was 95, 71, 535, and 108, respectively with p < 10-7. More than 95% of spots had high SNR (>10). Keywords: characteristics of newly developed microarray using different normal tissue Loop design was carried on for all of tissue samples from the six chickens. Samples of four tissues from a chicken were used in each loop. The order of the tissues in each loop was changed so that all pairs of tissues were combined on an array with an equal number of times. Dye swap was used so that each tissue was measured an equal number of times with each dye. Data from 12 measurements for each tissue were collected, in total, 48 measurements from 24 arrays.