To identify the driver factors in liver metastasis of colorectal cancer, and seek for possible biomarkers, we applied array trascriptome detection using approaches tailored to FFPE derived RNA
Weighted gene co-expression network analysis of colorectal cancer liver metastasis genome sequencing data and screening of anti-metastasis drugs.
Specimen part
View SamplesProtein deficiency and intestinal parasite infection during pregnancy impair fetal growth through passage of signals from the maternal environment which signal impairment of fetal growth. The placenta is an important regulator of the transfer of these signals through differential expression of key placental genes. We used microarrays to examine placental gene expression responses to maternal protein deficiency (6% vs. 24% protein) and Heligmosomoides bakeri infection.
Expression of growth-related genes in the mouse placenta is influenced by interactions between intestinal nematode (Heligmosomoides bakeri) infection and dietary protein deficiency.
Specimen part
View SamplesA lactobacilli dominated microbiota in most pre and post-menopausal women is an indicator of vaginal health. A Nugent scoring system serves as a proxy for determining the ratio of lactobacilli to other vaginal inhabitants where a high score usually represents a diseased state, whilst an intermediate score represents a warning zone. The objective of this double blinded, placebo-controlled crossover study was to evaluate in 14 post-menopausal women with an intermediate score, the effect of vaginal administration of probiotic L. rhamnosus GR-1 and L. reuteri RC-14 on the microbiota and host response. The probiotic treatment did not result in changes to clinical parameters such as dryness, irritation and comfort, compared to when placebo was applied. Analysis using 16S rRNA sequencing and metabolomics profiling revealed that the proportional abundance of Lactobacillus was increased following probiotic administration as compared to placebo, which was weakly associated with an increase in lactate levels. Analysis of host responses by microarray showed the probiotics had an immune-modulatory response and multiplex cytokine analysis showed up-regulation of IL-5. This is the first study to use an interactomic approach for the study of vaginal probiotic administration in post-menopausal women. It shows that in some cases multifaceted approaches are required to detect the subtle trigger molecular changes induced by the host to instillation of probiotic strains.
A systems biology approach investigating the effect of probiotics on the vaginal microbiome and host responses in a double blind, placebo-controlled clinical trial of post-menopausal women.
Specimen part
View SamplesPseudoautosomal regions (PAR1 and PAR2) in eutherians retain homologous regions between the X and Y chromosomes that play a critical role in the obligatory X-Y crossover during male meiosis. Genes that reside in the PAR1 are exceptional in that they are rich in repetitive sequences and undergo a very high rate of recombination. Remarkably, murine PAR1 homologs have translocated to various autosomes, reflecting the complex recombination history during the evolution of the mammalian X chromosome. We now report that the SNF2-type chromatin remodeling protein ATRX controls the expression of eutherians ancestral PAR1 genes that have translocated to autosomes in the mouse. In addition, we have identified two potentially novel mouse PAR1 orthologs. We propose that the ancestral PAR1 genes share a common epigenetic environment that allows ATRX to control their expression.
The SWI/SNF protein ATRX co-regulates pseudoautosomal genes that have translocated to autosomes in the mouse genome.
Sex
View SamplesThe onset of menopause is accompanied by a dramatic increase in reported symptoms of vaginal dryness, soreness, irritation or itching, pain with intercourse and bleeding after intercourse. Collectively these affect 25-50% of women of post-menopausal age and significantly impact their quality of life. To examine how gene expression differs between these groups, surface vaginal epithelial cells were collected from postmenopausal women suffering from vaginal dryness and appropriate controls not suffering from dryness.
No associated publication
Specimen part
View SamplesGene expression profiles of granulosa cells from rat ovarian follicles by Affymetrix rat whole genome array showed that twelve genes were up-regulated, while one gene down-regulated more than 1.5 folds in the normal developmental competence group compared with those in the poor developmental competence group. Gene ontology classification showed that the up-regulated genes included lysyl oxidase and nerve growth factor receptor associated protein 1, which are important in the regulation of protein-lysine 6-oxidase activity, and in apoptosis induction, respectively. The down-regulated genes included glycoprotein-4-beta galactosyltransferase 2, which is involved in the regulation of extracellular matrix organization and biogenesis.
No associated publication
No sample metadata fields
View SamplesSevere asthma exacerbations in children requiring hospitalisation are typically associated with viral infection, and occur almost exclusively amongst atopics, but the significance of these comorbidities is unknown. We hypothesised that underlying interactions between immunoinflammatory pathways related to responses to aeroallergen and virus are involved, and that evidence of these interactions is detectable in circulating cells during exacerbations.
Interactions between innate antiviral and atopic immunoinflammatory pathways precipitate and sustain asthma exacerbations in children.
Specimen part, Disease, Disease stage
View SamplesGallic acid (also known as 3,4,5-trihydroxybenzoic acid, GA), a naturally occurring phenolic acid, is a major constituent of tea and red wine. It has been demonstrated that GA possess anti-cancer activities. We found the epigenetic effect of GA in tobacco-associated human cancer cell lines.
The inhibitory activity of gallic acid against DNA methylation: application of gallic acid on epigenetic therapy of human cancers.
Specimen part, Cell line, Treatment
View SamplesAs LRIG1 known to be a negative regulator of EGFR, we postulate that restored LRIG1 expression will change the transcription profile through the regulation of EGFR as well as its downstream signal cascades. Thus, we conducted a time-course microarray study to examine the effect of restored LRIG1 expression in NPC line, TW01-LG1/a, which the LRIG1 expression is under the control of a promoter with Doxycycline response element.
LRIG1 modulates aggressiveness of head and neck cancers by regulating EGFR-MAPK-SPHK1 signaling and extracellular matrix remodeling.
Cell line, Treatment, Time
View SamplesID-1, known as inhibitor of differentiation or a helix loop helix transcription factor which lack the basic DNA binding domain. It is known to bind to bHLH transcription factor and inhibit those bHLH to bind to the promoter thus inhibiting further transcription. Overexpression of ID-1 has been correlated with a variety of human cancers including breast, prostate, pancreatic, ovarian, endometrial, bladder cancer and melanomas. Recently known that if ID-1 is depleted, it abrogates cell proliferation, invasion and migration of cells in NSCLC. Further ID-1 expression is induced by Nicotine and EGF through the activation of nAChRs and EGFR. Here microarray analysis was done to compare differential gene expression patterns upon nicotine and EGF stimulation of A549 and H1650 cells and how ID1 depletion changes these patterns. We find that multiple genes are affected and the role of these genes in lung cancer will be elucidated. In this study we show that ID-1 regulates the expression of three genes STMN3, TPD52 and GSPT1 in NSCLC by activating the promoter of these genes either directly or indirectly. We also show that depletion of STMN3, TPD52 and GSPT1 prevented Nicotine and EGF induced cell proliferation, invasion and migration of cells in NSCLC.
No associated publication
Cell line, Treatment
View Samples