Combinatory microarray and SuperSAGE analyses identify pairing-dependently transcribed genes in Schistosoma mansoni males, such as follistatin [Microarray]
ABSTRACT: Transcriptional profiling of S. mansoni pairing-experienced males (EM) vs. pairing unexperienced males (UM) Two conditions (EM vs. UM) with three biological samples of EM and in parallel other three biological samples of UM. For each sample (three EM and three UM) were performed four technical replicas.
Project description:Comparing the transcriptomes of pairing-experienced (EM) and pairing-unexperienced (UM) male Schistosoma mansoni (in biological triplicates) we detected 253 genes to be significantly differeantially (p < 1-10; log2ratios < -0.585 or > +0.585) transcribed. pairing-experienced (EM) and pairing-unexperienced (UM) male Schistosoma mansoni were compared by SuperSAGE (Matsumura et al., 2003; with minor changes: Molina et al., 2008), sequencing Illumina (Solexa)
Project description:Hormonal fluctuations throughout the ovarian cycle contribute to females’ higher vulnerability to anxiety disorders when compared to males. Notably, such sex differences are controlled by regulation of genes in the medial prefrontal cortex (mPFC) including the transcription factor early growth response 1 (Egr1) in rats, which highlights a control of anxiety-like behaviors by sexually-biased gene expression. We therefore undertook a large-scale characterization of sex differences and their interaction with the estrous cycle in the adult mPFC transcriptome and report that proestrus and diestrus females (with high and low ovarian hormones levels, respectively) exhibited a partly-opposed sexually-biased transcriptome. Surprisingly, the extent of regulations within females vastly exceeded sex differences, and support a multi-level reorganization of synaptic function across the estrous cycle. Furthermore, genome-wide analysis of Egr1 binding highlighted its role in controlling the synapse-related genes varying within females, and the sex- and estrous cycle-dependent transcriptomic reorganization in the rat mPFC. Early growth response 1 (Egr1) binding profiling in the adult rat medial prefrontal cortex of males, proestrus females, and diestrus females. A total of 9 animals were used, corresponding to 3 Males, 2 proestrus females, and 4 diestrus females.
Project description:8-cell stage rat embryos were sired by males treated with saline or a chemotherapeutic cocktail, BEP, consisting of Bleomycin, Etoposide, and Cisplatin for 9 weeks. Animals were given an additional 9 weeks of recovery, without any treatment, prior to mating. qPCR gene expression profiling for 84 stem cell transcription factors. Total RNA extracted from 25-35 embryos at the eight-cell stage sired by control or BEP-treated males after a 9-wk recovery period (2 females mated per male, n= 4 males/treatment).
Project description:The generation of CD8+ T-cell memory is an important aim of immunization. While several distinct subsets of CD8+ T-cell memory have been described, the lineage relationships between effector (EFF), effector memory (EM) and central memory (CM) T cells remain contentious. Specifically, there is contradictory experimental evidence to support both the linear (Naive>EFF>EM>CM) and progressive differentiation (Naive>CM>EM>EFF) models. In this study, we applied a systems biology approach to examine global transcriptional relationships between the three major CD8+ T cell subsets arising endogenously as a result of vaccination with three different prime-boost vaccine regimens. Differential gene expression analysis and principle component analysis revealed that central memory cells were more closely related to naive T cells than both effector memory and effector cells. When the transcriptional relationships between subsets were enriched in an unbiased fashion with known global transcriptional changes that result when T-cells repeatedly encounter antigen, our analysis favored a model whereby cumulative antigenic stimulation drives differentiation specifically from Naive > CM > EM > EFF. These findings provide an insight into the lineage relationship between mature CD8+ T-cell subsets and will help in the rational design of vaccines aimed at generating effective immune responses against infections and cancer. Effector (EFF), effector memory (EM), central memory (CM) and naive CD8+ T cells from mice spleen. Memory subset arise endogenously as a result of vaccination with three different prime-boost vaccine regimens: DNA-rAd5, rAd5-rAd5 and rAd5-rLCMV.
Project description:This experiment investigates changes in gene expression upon Orsay virus infection and between males and hermaphrodites in the nematode Ceanorhabditis elegans. The laboratory reference strain N2 was used. For this strain, males are less susceptible to Orsay virus infection than hermaphrodites. The goal of the experiment was to identify genes that show different expression patterns for both sexes upon Orsay virus infection. We mock-treated or infected 48h-old C. elegans populations with Orsay virus and took samples 30-hours after infection. For each treatment-sex combination 8 samples were collected. Thereafter RNA was isolated, labelled, and hybridized on microarray. The gene-expression dynamics of previously identified genes (e.g. from literature and from a highly replicated N2 versus CB4856 experiment) were analyzed.
Project description:What methylation changes are occurring in different compartments of early maturation stage seed largely remains unknown. To uncover the possible role of DNA methylation in different compartments of early maturation stage seed, we characterized the methylome of two major compartments (abaxial parenchyma and adaxial parenchyma) in embryonic cotyledon, four major compartments (parenchyma, plumule, root tip, and vascular) in embryonic axis, and seed coat layers (parenchyma and palisade) using Illumina sequencing. The whole seed coat and embryonic cotyledons were captured using LCM to serve as controls. Overall design: Illumina sequencing of bisulfite-converted genomic DNA from cotyledon abaxial parenchyma (EM-COT-ABPY), cotyledon adaxial parenchyma (EM-COT-ADPY), seed coat parenchyma (EM-SC-PY), seed coat palisade (EM-SC-PA), axis parenchyma (EM-AX-PY), axis plumule (EM-AX-PL), axis root tip (EM-AX-RT), axis vascular (EM-AX-VS), whole seed coat (EM-SC), and whole embryonic cotyledons (EX-COT)
Project description:In our study, differential male nucleus events and development behaviors were revealed from the fertilized eggs in response to the sperm from males of genotypic sex determination (GSD) and temperature-dependent sex determination (TSD) in gibel carp. When the eggs of maternal fish were fertilized by the sperm from males of GSD, the fertilized egg encountered similar sexual reproduction events and behaviors. However, when the eggs of maternal fish were fertilized by the sperm from males of TSD, a typical process of gynogenesis was observed. To reveal the underlying molecular mechanism of differential sperm nucleus development behaviors in the fertilized eggs, iTRAQ-based quantitative semen proteomics were performed on three semen samples from three males of GSD and three semen samples from three males of TSD respectively.
Project description:We report on the small RNA profiles of Schistosoma japonicum (S. japonicum) miRNAs using small RNA deep sequencing in the key stages of male-female pairing, gametogenesis, and egg production. Examination of different miRNAs between males and females in Schistosoma japonicum
2016-01-07 | E-GEOD-74654 | ArrayExpress
Project description:Combinatory microarray and SuperSAGE analyses identify pairing-dependently transcribed genes in Schistosoma mansoni males, including follistatin