Female MRL/lpr and Non-Obese Diabetic (NOD) Mice Treated with Placebo or Testosterone.
Ontology highlight
ABSTRACT: The Influence of Testosterone on Lacrimal Gland Gene Expression in Female Mice of the MRL/lpr and Non-obese Diabetic Models of SjšgrenÕs Syndrome Keywords: Placebo versus Testosterone Treatment. Female placebo and testosterone treated lacrimal glands were harvested from each mouse strain . Tissues were pooled into 3 biological replicates and were hybridized to separate microarrays. Each cRNA prep was hybridized to a GE Healthcare/Amersham Biosciences CodeLink UniSet Mouse 20K I Bioarray and a Affymetrix GeneChip Mouse Expression Array 430A.
Project description:The Effect of Sex on Lacrimal Gland Gene Expression in the MRL/lpr and Non-obese Diabetic Mouse Models of SjšgrenÕs Syndrome Keywords: Female vs Male Lacrimal Gland Gene Expression. Female and male lacrimal glands were harvested each mouse strain . Tissues were pooled into 3 biological replicates and were hybridized to separate microarrays. Each cRNA prep was hybridized to a GE Healthcare/Amersham Biosciences CodeLink UniSet Mouse 20K I Bioarray and a Affymetrix GeneChip Mouse Expression Array 430A.
Project description:The Effect of Aromatase Knockout on Gene Expression in the Mouse Lacrimal and Meibomoan Gland. Keywords: Aromatase Knockout vs Wild Type Control Lacrimal and meibomian glands were harvested from homozygous male and female aromatase knockout mice and age matched wild type controls. Tissues were pooled into 3 biological replicates and were hybridized to separate microarrays. Each cRNA prep was hybridized to a GE Healthcare/Amersham Biosciences CodeLink UniSet Mouse 20K I Bioarray and a Affymetrix GeneChip Mouse Expression Array 430A.
Project description:The Influence of Testosterone on Lacrimal Gland Gene Expression in Female Mice of the MRL/lpr and Non-obese Diabetic Models of SjšgrenÕs Syndrome Keywords: Placebo versus Testosterone Treatment.
Project description:Optimal androgen signaling is critical for testicular development and spermatogenesis. Methoxyacetic acid (MAA), the primary active metabolite of the industrial chemical ethylene glycol monomethyl ether, disrupts spermatogenesis and causes testicular atrophy. Transcriptional trans-activation studies have indicated that MAA can enhance androgen receptor activity, however, whether MAA actually impacts the expression of androgen-responsive genes in vivo, and which genes might be affected is not known. A mouse TM3 Leydig cell line that stably expresses androgen receptor (TM3-AR) was prepared and analyzed by transcriptional profiling to identify target gene interactions between MAA and testosterone on a global scale. MAA is shown to have widespread effects on androgen-responsive genes, affecting processes ranging from apoptosis to ion transport, cell adhesion, phosphorylation and transcription, with MAA able to enhance, as well as antagonize, androgenic responses. Moreover, testosterone is shown to exert both positive and negative effects on MAA gene responses. Motif analysis indicated that binding sites for FOX, HOX, LEF/TCF, STAT5 and MEF2 family transcription factors are among the most highly enriched in genes regulated by testosterone and MAA. Notably, 65 FOXO targets were repressed by testosterone or showed repression enhanced by MAA when combined with testosterone; these include 16 genes associated with developmental processes, six of which are Hox genes. These findings highlight the complex interactions between testosterone and MAA, and provide insight into the effects of MAA exposure on androgen-dependent processes in a Leydig cell model. TM3-AR cells (see below) were grown in DMEM-F12 medium containing 5% horse serum and 2.5% FBS. LNCaP cells were maintained in RPMI 1640 containing 10% FBS. RNA was isolated using TRIzol reagent using the manufacturer’s protocol.
Project description:A gene expression profiling sub-study was conducted in which colonic biopsy samples were collected for RNA extraction and hybridization to microarrays from 48 patients with UC who were participating in ACT 1, a placebo-controlled study of infliximab. Gene expression profiles from infliximab responders were compared with those of baseline and infliximab non-responder samples. Infliximab had a significant effect on mRNA expression in treatment responders, with both infliximab dose and duration of treatment having an effect. Genes affected are primarily involved with inflammatory response, cell-mediated immune responses, and cell-to-cell signaling. Infliximab non-responders had a molecular phenotype that closely resembled that of untreated patients with UC. Unlike responders, non-responders do not effectively modulate TH1, TH2, and TH17 pathways. Gene expression can differentiate placebo and infliximab responders. Patients with moderate-to-severe, active UC were treated with infliximab or placebo at weeks 0, 2, 6 and every 8 weeks thereafter. Biopsy samples (n=113) were collected from 48 patients at baseline, weeks 8 and 30 for RNA extraction and microarray analysis.
Project description:To investigate the regulatory genes responsible for the neuropathology in AD, we performed microarray analysis with APPV717I-CT100 transgenic mice, an animal model of AD. We extracted total RNA of hippocampus in three brains of 11 month-old APPV717I-CT100 Tg mice. Total RNA was prepared from using Trizol reagent. Control vs APPV717I-CT100 Tg mice. Three hippocampus per array were used.
Project description:Prior to the onset of autoimmune destruction, type 1 diabetic patients and an animal model thereof, the nonobese diabetic (NOD) mouse, show morphological and functional abnormalities in target organs, which may act as inciting events for leukocyte infiltration. To better understand these abnormalities, but without the complications associated with inflammatory infiltrates, we examined genes expressed in autoimmune target tissues (pancreas, submandibular glands, and lacrimal glands) of NOD/scid mice and of autoimmune-resistant C57BL6/scid mice. Experiment Overall Design: Pancreata (6 weeks old mice), submandibular (9 and 15 weeks), and lacrimal glands (15 weeks) from individual NOD-scid and B6-scid mice were isolated for RNA extraction and hybridization on Affymetrix microarrays.
Project description:Series includes pooled (n = 5 mice per biological replicate) samples from lacrimal, meibomian, and submandibular glands of male palcebo- and testosterone-treated BALB/c mice. All experiments were run in triplicate (pooled biological replicates) on CodeLink Mouse Uniset I Microarrays. Keywords: repeat sample
Project description:In previous studies, we identified the fungal macrocyclic lactone (S)-curvularin (SC) as an anti-inflammatory agent using a screening system detecting inhibitors of the Janus kinase/signal transducer and activator of transcription pathway. The objective of the present study was to investigate whether SC is able to decrease proinflammatory gene expression in an in vivo model of a chronic inflammatory disease. Therefore, the effects of SC and dexamethasone were compared in the model of collagen-induced arthritis (CIA) in mice. In addition to measuring the arthritis index (paw swelling) of the animals, we also performed whole genome microarray analyses to identify SC target genes and new therapeutic targets of SC.
Project description:Identification of a stable gene expression signature with high classifying potential to discriminate benign (Follicular adenomas) and malignant (papillary carcinomas) thyroid tumors