Comparative analysis of gene expression profiles in newly developed housing systems is important to understand gene functions in chicken for adaptation and possible gene-environment interactions among layer lines. Therefore, the objective of this study was to characterize the molecular processes that are different among the two layer lines Lohmann Selected Leghorn (LSL) and Lohmann Brown (LB) using whole genome RNA expression profiles. Despite their approximately identical egg production performance these layer lines differ markedly in other phenotypic traits. The two layer lines were kept under the production environment of the newly developed small group housing system Eurovent German with two different group sizes and three tiers.
Differential gene expression from genome-wide microarray analyses distinguishes Lohmann Selected Leghorn and Lohmann Brown layers.
Specimen part
View SamplesThis research focus primarily on the interaction between influenza virus and endothelial cell, then we used microarrays to observe global patterns of gene expression in Human Umbilical Vein Endothelial Cells after influenza virus infection and offer further insight into the interaction between endothelial cells and influenza viruses.
No associated publication
Specimen part
View SamplesToxoplasma infection can cause damage to the male reproductive system, such as sexual dysfunction and infertility. The epididymis is an important accessory organ of male reproductive system, where sperm maturation and storage take place. Sperm maturation in the epididymis is a highly programmed process, which may be affected by the epididymis microenvironment. Therefore, studying the epididymis characteristics is important for identification of factors affecting sperm maturation. However, studies investigating the differential expression genes of host and Toxoplasma gondii by transcriptome sequencing of the male reproductive system are limited. The main objective of this study was to examine differential gene expression by RNA sequencing (RNA-seq) technology in order to identify key genes associated with Toxoplasma gondii (PRU strain) chronic infection of the epididymis in male Kunming mice.
No associated publication
Sex, Age, Specimen part, Cell line
View SamplesThe bursa of Fabricius is an immune organ unique to birds and possesses a specialized micro-environment that supports the differentiation of B cells and production of antibodies but, it can be damaged by lipopolysaccharide (LPS) derived from Salmonella typhimurium, one of the most deleterious food-borne pathogens. However, its mechanism of action at transcriptional level is poorly known yet. Therefore, the current project was designed and bursa of Fabricius from newly hatched chicks were sequenced at 12, 36 and 72 hours post saline and LPS treatments with 3 replications at each time point.
No associated publication
Sex, Specimen part, Disease stage, Treatment
View SamplesThe transcription factor STAT1 is essential for interferon- (IFN) mediated protective immunity in humans and mice. Two splice isoforms of STAT1, STAT1 and STAT1, differ with regard to a C-terminal transactivation domain, which is absent in STAT1. Dimers of STAT1 are therefore considered transcriptionally inactive and potential competitive inhibitors of STAT1. Contrasting this view, generation and analysis of mice deficient for either STAT1 or STAT1 demonstrated transcriptional activity of the STAT1 isoform and its enhancement of innate immunity. Gene expression profiling in primary cells revealed overlapping, but also non-redundant and gene-specific activities of STAT1 and STAT1 in response to IFN. Consistently, both isoforms mediated protective, IFN-dependent immunity against the bacterium Listeria monocytogenes, although with remarkably different efficiency. In contrast, STAT1 and STAT1 were largely redundant for transcriptional responses to IFN/ and for IFN/-dependent antiviral activity. Collectively, our data shed new light on how STAT1 isoforms contribute to antimicrobial immunity.
STAT1β is not dominant negative and is capable of contributing to gamma interferon-dependent innate immunity.
Specimen part
View SamplesThe benefit of treatment in mild to moderate cases of E. coli mastitis in dairy cows remains a topic of discussion.
Impact of intramammary treatment on gene expression profiles in bovine Escherichia coli mastitis.
Treatment, Time
View SamplesInsight into mechanisms controlling gene expression in the spermatogonial stem cell (SSC) will improve our understanding of the processes regulating spermatogenesis and aid in treating problems associated with male infertility.
Spermatogonial stem cell self-renewal requires ETV5-mediated downstream activation of Brachyury in mice.
Specimen part, Treatment
View SamplesFull title: Prepubertal Human Spermatogonia and Mouse Gonocytes Share Conserved Gene Expression of Germline Stem Cell Regulatory Molecules
Prepubertal human spermatogonia and mouse gonocytes share conserved gene expression of germline stem cell regulatory molecules.
Age
View SamplesWhile aging leads to a reduction in the capacity for regeneration after pneumonectomy (PNX) in most mammals, this biological phenomenon has not been characterized over the lifetime of mice. We measured the age-specific (3, 9, 24 month) effects of PNX on physiology, morphometry, cell proliferation and apoptosis, global gene expression, and lung fibroblast phenotype and clonogenicity in female C57BL6 mice. The data show that only 3 month old mice were fully capable of restoring lung volumes by day 7 and total alveolar surface area. By 9 months, the rate of regeneration was slower (with incomplete regeneration by 21 days), and by 24 months there was no regrowth 21 days post-PNX. The early decline in regeneration rate was not associated with changes in alveolar epithelial cell type II (AECII) proliferation or apoptosis rate. However, significant apoptosis and lack of cell proliferation was evident after PNX in both total cells and AECII cells in 24 mo mice. Analysis of gene expression at several time points (1, 3 and 7 days) post-PNX in 3 versus 9 month mice was consistent with a myofibroblast signature (increased Tnc, Lox1, Col3A1, Eln and Tnfrsf12a) and more alpha smooth muscle actin (SMA) positive myofibroblasts were present after PNX in 9 month than 3 month mice.
No associated publication
Sex, Age, Specimen part
View SamplesThe adult human lung has a very limited capacity to regenerate functional alveoli. In contrast, adult mice have a remarkable capacity for neoalveolarization following either lung resection or injury. The molecular basis for this unique capability to regenerate lung tissue in mice is largely unknown. We examined the transcriptomic responses to single lung pneumonectomy in adult mice in order to elucidate prospective molecular signaling used in this species during lung regeneration. Unilateral left pneumonectomy or sham thoracotomy was performed under general anesthesia (n = 8 mice per group for each of the four time points). Total RNA was isolated from the remaining lung tissue at four time points post-surgery (6 hours, 1 day, 3 days, 7 days) and analyzed using microarray technology. The observed transcriptomic patterns revealed mesenchymal cell signaling, including up-regulation of genes previously associated with activated fibroblasts (Tnfrsf12a, Tnc, Eln, Col3A1), as well as modulation of Igf1-mediated signaling. The data set also revealed early down-regulation of pro-inflammatory cytokine transcripts, up-regulation of genes involved in T cell development and function, but few similarities to transcriptomic patterns observed during embryonic or post-natal lung development. Immunohistochemical analysis suggests that early fibroblast but not myofibroblast proliferation is important during lung regeneration and may explain the preponderance of mesenchymal-associated genes that are over-expressed in this model. This appears to differ from embryonic alveologenesis. These data suggest that modulation of mesenchymal cell signaling and proliferation may act in concert with immunomodulation to control inflammation during post-pneumonectomy lung regeneration in adult mice.
Global gene expression patterns in the post-pneumonectomy lung of adult mice.
Sex, Treatment, Time
View Samples