Computer-vision object tracking for monitoring bottlenose dolphin habitat use and kinematics
Ontology highlight
ABSTRACT:
ORGANISM(S): Bottlenose dolphin (Tursiops truncatus)
SUBMITTER:
PROVIDER: S-BSST793 | bioimages |
REPOSITORIES: bioimages
Similar Datasets
Project description:Real-time tracking of Tomato brown rugose fruit virus (ToBRFV) outbreaks in the Netherlands using Nextstrain.
| PRJEB36528 | ENA
Project description:Food Tracking perspective: DNA metabarcoding toidentify composition in complex and processed foodproducts.
| PRJEB31578 | ENA
Project description:In normal mammalian development cytosine methylation is essential, and is directed to specific regions of the genome. Despite notable advances in mapping the genome-wide distribution, studying the direct contribution of DNA methylation to gene regulation has been limited by the lack of tools for its precise manipulation. Thus, combining the targeting capability of CRISPR/Cas9 systems with an epigenetic modifier has attracted interest in the scientific community. In contrast to profiling the genome-wide cleavage of a nuclease competent Cas9, tracing the global activity of a dead Cas9-methyltransferase is challenging within a highly modified genome. To overcome this, we utilized an engineered, methylation depleted but maintenance competent mouse ES cell line and find a surprisingly ubiquitous nuclear activity of dCas9-methyltransferases. Our results provide new insights into the targeted regulation of DNA methylation and point to an important difference between genetic and epigenetic editing tools that require unique experimental considerations.
2018-03-12 | GSE87757 | GEO
Project description:We have developed a human model leukemia system where healthy cord blood (CB) cells from single donors are used to generate dozens of human leukemias driven by KMT2A fusions. These models have been used for the study of the stepwise changes in donor CB cells as they undergo leukemic transformation driven by the KMT2A-MLLT3 (KM3) fusion gene. We specifically studied the epigenetic changes that occur in this specific AML subgroup through ChIP-seq of histone modifications and ATAC-seq and DNA methylation through Methyl-Seq.
2020-07-01 | GSE142579 | GEO
Project description:Nucleosomes, composed of DNA and histone proteins, represent the fundamental repeating unit of the eukaryotic genome; posttranslational modifications of these histone proteins influence the activity of the associated genomic regions to regulate cell identity. Traditionally, trimethylation of histone H3K4 (H3K4me3) is associated with transcriptional initiation, whereas trimethylation of H3K27 (H3K27me3) is transcriptionally repressive. The apparent juxtaposition of these opposing marks, termed “bivalent domains”, was proposed to specifically demarcate of small set transcriptionally-poised lineage-commitment genes that resolve to one constituent modification through differentiation, thereby determining transcriptional status. Since then, many thousands of studies have canonized the bivalency model as a chromatin hallmark of development in many cell types. However, these conclusions are largely based on chromatin immunoprecipitations (ChIP) with significant methodological problems hampering their interpretation. Absent direct quantitative measurements, it has been difficult to evaluate the strength of the bivalency model. Here, we present reICeChIP, a calibrated sequential ChIP method to quantitatively measure H3K4me3/H3K27me3 bivalency genome-wide, addressing the limitations of prior measurements. With reICeChIP, we profile bivalency through the differentiation paradigm that first established this model: from naïve mouse embryonic stem cells (mESCs) into neuronal progenitor cells (NPCs). Our results cast doubt on every aspect of the bivalency model; in this context, we find that bivalency is widespread, does not resolve with differentiation, and is neither sensitive nor specific for identifying poised developmental genes or gene expression status more broadly. Our findings caution against interpreting bivalent domains as specific markers of developmentally poised genes.
2021-09-10 | GSE183155 | GEO
Project description:Spatiotemporal control of chromatin structure and dynamics at sub-kilobase to megabase scales is essential for genome function. Epigenetic modification plays important roles in transcriptional regulation. How histone marks regulate genome organization at different scales remain unclear. Here we introduce an EpiGo (Epigenetic perturbation induced Genome organization) system to modify hundreds of genomic loci with H3K9me3 spanning megabases on human chromosome 19 and simultaneously track their changes of genome organization. EpiGo-mediated H3K9me3 spreads more extensively in transcriptionally inactive regions than active regions. H3K9 trimethylation of active regions trigger local chromatin compaction without substantial gene silencing. H3K9 trimethylated loci or regions associate with HP1a condensates and adjacent loci with H3K9me3 coalesce over time. H3K9 trimethylation of inactive regions reshape local genome compartmentalization. These results reveal that H3K9me3 mediates local chromatin compaction or genome compartmentalization upon distinct transcriptional states.
2020-11-04 | GSE137469 | GEO
Project description: Not available
| S-EPMC3672895 | biostudies-other
Project description:Cells respond heterogeneously to DNA damage. We engineered genetic circuits to detect differential responses in a population that persist for many days post-stimulus. We used microarrays to compare memory and non-memory subpopulations 3 days after DNA damage or doxycycline exposure. MD12/p53R2-RE and MD10/TetOx2 cells were either exposed to UV (10uJ/m^2) or doxycycline (1 ug/mL, 24 hours) and allowed to recover 3 days before sortng of memory and non-memory cells and RNA extraction. Two replicates were submitted for each condition (UV memory, UV non-memory, dox memory, dox non-memory)
2012-05-23 | E-GEOD-38189 | biostudies-arrayexpress
Project description: Not available
| S-EPMC3655121 | biostudies-other
Project description:Cells respond heterogeneously to DNA damage. We engineered genetic circuits to detect differential responses in a population that persist for many days post-stimulus. We used microarrays to compare memory and non-memory subpopulations 3 days after DNA damage or doxycycline exposure.
2012-05-24 | GSE38189 | GEO