Ontology highlight
ABSTRACT:
PROVIDER: PRJNA693423 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Reptiles are phylogenically important group of animals as mammals are evolved from them. Clearly distinct phases of reproductive cycle in wall lizard enable us to study mechanisms regulating spermatogenesis. We have performed microarray hybridizations on mouse whole genome 60K gene chip using RNA from regressed, recrudescent and active phase of reproductive cycle. Microarray data was analyzed considering regressed phase as control. To the best of our knowledge, this is the first report of transcriptome analysis of whole testis of wall lizard from various phases of reproductive cycle. Microarray results reveal that maximum number of differential gene expression is in between regressed and recrudescent phase than in between recrudescent and active phase. The genes prominently expressed in recrudescent and active phase testis are cytoskeleton organization, cell growth and division, osmo-regulation, differentiation and apoptosis. The genes showing higher expression in regressed phase belonged to functional categories such as negative regulation of growth, repression of transcription, maintenance of stem cell niche and muscle related proteins. Summarily, this is first exploratory study profiling transcriptome of three drastically different conditions of wall lizard testis. This study will pave the way for deeper insight into gene regulatory mechanisms in spermatogenesis and evolution of spermatogene processes. Agilent one-color experiment,Organism: Mouse ,Agilent-Custom Whole Genome Mouse 8x60k designed by Genotypic Technology Pvt. Ltd. (AMADID: 026986) , Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442)
2013-03-01 | E-GEOD-36505 | biostudies-arrayexpress
Project description:Reptiles are phylogenically important group of animals as mammals are evolved from them. Clearly distinct phases of reproductive cycle in wall lizard enable us to study mechanisms regulating spermatogenesis. We have performed microarray hybridizations on mouse whole genome 60K gene chip using RNA from regressed, recrudescent and active phase of reproductive cycle. Microarray data was analyzed considering regressed phase as control. To the best of our knowledge, this is the first report of transcriptome analysis of whole testis of wall lizard from various phases of reproductive cycle. Microarray results reveal that maximum number of differential gene expression is in between regressed and recrudescent phase than in between recrudescent and active phase. The genes prominently expressed in recrudescent and active phase testis are cytoskeleton organization, cell growth and division, osmo-regulation, differentiation and apoptosis. The genes showing higher expression in regressed phase belonged to functional categories such as negative regulation of growth, repression of transcription, maintenance of stem cell niche and muscle related proteins. Summarily, this is first exploratory study profiling transcriptome of three drastically different conditions of wall lizard testis. This study will pave the way for deeper insight into gene regulatory mechanisms in spermatogenesis and evolution of spermatogene processes.
2013-03-01 | GSE36505 | GEO
Project description:We mapped DNA methylation in 580 animal species (535 vertebrates, 45 invertebrates), resulting in 2443 genome-scale, base-resolution DNA methylation profiles of primary tissue samples from various organs. Reference-genome independent analysis of this comprehensive dataset defined a “genomic code” of DNA methylation, which allowed us to predict global and locus-specific DNA methylation from the DNA sequence within and across species. This code appears broadly conserved throughout vertebrate evolution, with two major transitions – once in the first vertebrates and again with the emergence of reptiles. Beyond the central role of species-specific DNA sequence composition, our dataset identified the tissue type and the individual as two main sources of DNA methylation variability within species. Tissue type was the dominant factor in fish, birds, and mammals, while in invertebrates, reptiles, and amphibians both factors were similarly strong. Cross-species comparisons focusing on heart and liver tissues supported a highly conserved role of DNA methylation for tissue type and identity and cross-mapping based promoter methylation analysis revealed divergence at specific genes. In summary, this study establishes a large resource of vertebrate and invertebrate DNA methylomes, it showcases the power of reference-free epigenome analysis in species for which no reference genomes are available, and it contributes an epigenetic perspective to the study of vertebrate evolution.
2022-06-18 | GSE195869 | GEO
Project description:Genome project of Callicarpa species endemic to the Bonin Islands
| PRJDB16173 | ENA
Project description:The availability of viral entry factors is a prerequisite for the cross-species transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Large-scale single-cell screening on animal cells is a powerful tool to reveal the expression patterns of viral entry genes for different hosts. But such exploration for SARS-CoV-2 remained limited. Here, we presented the broadest pan-species single-nucleus RNA sequencing study to date, covering 11 representative species in pets (cat, dog, hamster, lizard), livestock (goat, rabbit), poultry (duck, pigeon) and wildlife (pangolin, tiger, deer), from which we investigated the co-expression of ACE2 and TMPRSS2. Notably, the proportion of SARS-CoV-2 putative target cells in cat was found considerably higher than that of other species investigated in this study, highlighting the necessity to carefully evaluate the role of cats during SARS-CoV-2 circulation. Furthermore, cross-species analysis of comparative lung cell atlas in mammals, reptiles and birds revealed core developmental programs, critical connectomes and conserved regulatory circuits among evolutionarily distant species. Additionally, we developed a user-friendly and freely accessible online platform named PANDORA for researchers to fully exploit the pan-species single cell atlas. Overall, our work provides a compendium of gene expression profiles for non-model animals, which could be employed to identify potential SARS-CoV-2 target cells and narrow down putative zoonotic reservoirs. Alternatively, our resources could also be utilized to illuminate the cellular and molecular mechanisms underlying animal tissue evolution.
2021-09-04 | GSE183300 | GEO
Project description:This is the first dereplication of Psiadia lucida, an endemic species from Madagascar
2021-08-30 | MSV000088035 | GNPS