Excessive accumulation of lipids in the adipose tissue is a major problem in the present-day broiler industry. However, few studies have analyzed the expression of adipose tissue genes that are involved in pathways and mechanisms leading to adiposity in chickens. Gene expression profiling of chicken adipose tissue could provide key information about the ontogenesis of fatness and clarify the molecular mechanisms underlying obesity.
Profiling of chicken adipose tissue gene expression by genome array.
Age
View SamplesOver one million prostate biopsies are performed in the U.S. every year. However, pathology examination is not definitive in a significant percentage of cases due limited diagnostic tumor. We have observed that the microenvironment of prostate tumor cells exhibits numerous differential gene expression changes and have asked whether such information can be used to distinguish tumor from nontumor. We initially compared expression analysis data (Affymetrix U133plus2) from 18 volunteer biopsy specimens to 17 specimens containing largely tumor-adjacent stroma and identified 964 significant (p_adj < 0.01 and B > 0) expression changes. These genes were filtered to eliminate possible aging-related genes and genes expressed in tumor cells > 10% of the stroma cell expression level leading to 23 candidate genes (28 Affymetrix probe sets). A classifier based on the 28 probe sets was tested on 289 independent cases, including 195 tumor-bearing cases, 99 nontumor cases (normal biopsies, normal autopsies, remote stroma as well as pure tumor adjacent stroma) all with accuracies >85%, sensitivities >90% and specificities >85%. These results indicate that the prostate cancer microenvironment exhibits reproducible changes useful for categorization as tumor and nontumor.
In silico estimates of tissue components in surgical samples based on expression profiling data.
Subject
View SamplesProstate cancer gene expression profiles were studied in this project. A total RNA from 148 prostate sample with various amount of different cell types were hybridized to Affymetrix U133A arrays. The percentage of different cell types vary considerably among samples and were determined by pathologist. Cell type specific genes can be determined by linear regression using the methods of Stuart et al, PNAS, 2004.
In silico estimates of tissue components in surgical samples based on expression profiling data.
No sample metadata fields
View SamplesHuman prostate cancer tissues analyses
In silico dissection of cell-type-associated patterns of gene expression in prostate cancer.
No sample metadata fields
View SamplesCutaneous CD30+ lymphoproliferative disorder (CD30+LPDs), including lymphomatoid papulosis (LyP) and primary cutaneous anaplastic large-cell lymphoma (PCALCL), comprises the second most common group of cutaneous T cell lymphoma. Previously, we reported that special AT-rich sequence-binding protein1 (SATB1), a thymocyte specific chromatin organizer, was over-expressed and promoted malignant T-cell proliferation in a portion of CD30+LPDs, whereas other CD30+LPDs didn't express SATB1 at all. To elucidate the underlying molecular events in CD30+LPDs with differential SATB1 expression, we subjected 4 SATB1+ and 3 SATB1- CD30+LPDs skin biopsies to second-generation RNA-sequencing (RNA-seq). These data provide a significant resource for studies of CD30+LPDs. Overall design: 200ng total RNA samples were extracted and purified from 7 CD30+LPDs skin lesions (4 SATB1+, 3 SATB1-) to establish RNA library. Then the library was qualified through Agilent 2100 bioanalyzer instrument (Agilent Technologies, Santa Clara, CA) and Quantitative real-time polymerase chain reaction. The qualified library was sequenced on an Illumina HiSeqTM 2000 platform using paired-end reads. 10G raw data for each sample were obtained. The reads were aligned to the hg19 genome with SOAPaligner/SOAP2. Gene expression levels were calculated by reads per kilobase transcriptome per million mapped reads(RPKM)method.
SATB1 Defines a Subtype of Cutaneous CD30<sup>+</sup> Lymphoproliferative Disorders Associated with a T-Helper 17 Cytokine Profile.
Specimen part, Subject
View SamplesGlioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, with glioma initiating cells (GICs) implicated to be critical for tumor progression and resistance to therapy. KDM1B is involved in regulating GICs'' responses to hypoxia, since over-expression of KDM1B delays the cell growth under hypoxia while knocking-down of KDM1B in GICs promotes their survival and tumorigenic abilities. Overall design: We used RNA-Sequencing to detail the global change of gene expression in GICs with knockdown of KDM1B, and identified de-regulated genes and pathways downstream of KDM1B. CD133+ D456MG GICs were infected with non-targeting control and shRNA of KDM1B. Then RNA was extracted and gene expression was profiled by RNA-Seq.
MiR-215 Is Induced Post-transcriptionally via HIF-Drosha Complex and Mediates Glioma-Initiating Cell Adaptation to Hypoxia by Targeting KDM1B.
No sample metadata fields
View SamplesSolar ultraviolet CUV-Cradiation reaching the Earths surface is little due to the filtering effects of the stratospheric ozone layer. At present, artificial UV-C irradiation is utilized for different biological processes. Grape is a major fruit crop around the world. Research has shown that UV-C irradiation induced the biosynthesis of phenols. However, changes at the molecular level in response to UV-C and leading to these effects are poorly understood. To elucidate the effect of UV-C on expression of genes in grape and the response mechanism, transcript abundance of grape (Vitis vinifera L.) leaves was quantified using the Affymetrix Grape Genome oligonucleotide microarray (15,700 transcripts)
Transcriptomic analysis of grape (Vitis vinifera L.) leaves after exposure to ultraviolet C irradiation.
Age, Treatment
View SamplesAlthough the well-known importance of pig in agriculture, as well as a model for human biology, the miRNA catalog of pig has been largely undefined. Identification and preliminary characterization of adipose- and muscle-specific miRNAs would be a prerequisite for a thorough understanding of their roles in regulating adipose deposition and muscle growth. In the present study, we get insight into the miRNA transcriptome in eight adipose tissues, two skeletal muscles and cardiac muscle of pig using deep sequencing technology, and to elucidate their characteristic tissue-specific profiles and genomic context. Overall design: Eleven small RNA libraries from eight adipose tissues, two skeletal muscle tissues and cardiac muscle of pig were sequenced.
An atlas of DNA methylomes in porcine adipose and muscle tissues.
Sex, Age, Specimen part, Subject
View SamplesHaploid pluripotent stem cells, such as haploid embryonic stem cells (haESCs), facilitate the genetic study of recessive traits. In vitro, fish haESCs maintain haploidy in both undifferentiated and differentiated states, but whether mammalian haESCs can preserve pluripotency in the haploid state has not been tested. Here, we report that mouse haESCs can differentiate in vitro into haploid epiblast stem cells (haEpiSCs), which maintain an intact haploid genome, unlimited self-renewal potential, and durable pluripotency to differentiate into various tissues in vitro and in vivo. Mechanistically, the maintenance of self-renewal potential depends on the Activin/bFGF pathway. We further show that haEpiSCs can differentiate in vitro into haploid progenitor-like cells.
Durable pluripotency and haploidy in epiblast stem cells derived from haploid embryonic stem cells in vitro.
Specimen part
View SamplesOur study revealed photoperiod influenced on not only flowering not only stress responses under long-day conditions and ZmCCT and ZmCCA1 were the key functional links between the circadian clock and adversity stress tolerance. Establishment of the molecular link reveals a new interface between the plant phtoperiod and adversity stress.
Dual functions of the ZmCCT-associated quantitative trait locus in flowering and stress responses under long-day conditions.
Specimen part
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