Project description:The budding yeast Saccharomyces cerevisiae was used to study gene expression changes with step-wise reduction of nitrogen at a constant specific growth rate. Since nitrogen is critical for amino acid and nucleotide synthesis, reducing nitrogen content forces cells to reduce its proteome and transcriptome size.
Project description:Transcriptional profiling with samples from BT549 cells that were infected with control or NFIL3 shRNA Two condition experiment: control (scr) shRNA (two replicates) and NFIL3 shRNA (two replicates)
Project description:This SuperSeries is composed of the following subset Series: GSE31425: BT549 cells with control or NFIL3 shRNA treatment GSE31426: HEK293 cells with control or NFIL3 shRNA treatment Refer to individual Series
Project description:To investigate whether ER stress underpins the secretion of mis-glycosylated glycoproteins by trophoblast, we treated trophoblast-like BeWo cells with the ER stress inducer thapsigargin (Tg), an inhibitor specific for sarco/endoplasmic reticulum Ca2+-ATPase.
Project description:TNFα-stimulated gene 6 (TSG-6) is an anti-inflammatory protein. In human epidermis, TSG-6 is secreted in extracellular matrix where it interacts with hyaluronan (HA). However, their functions are not well understood. In this study, immortalized N/TERT keratinocytes were edited by CRISPR/Cas9, used to reconstruct in vitro epidermis (RHE) and stimulated or not with interleukins 4 and 13 for 48h to mimic atopic dermatitis (AD). Two TSG-6-/- clones (respectively TSG-6-/- (a) and TSG-6-/- (b)) harboring major deletions in both alleles were selected and compared to TSG-6+/+ cells. Epidermis reconstructed from TSG-6-/- (a) and TSG-6-/- (b) exhibit normal differentiation process and morphology but show an increased HA leakage in the underlying culture medium of both TSG-6-/- RHE compared to TSG-6+/+ tissues, especially in conditions that mimic AD. While IL-4/13 treatment of RHE induces regulation of genes associated with AD, the absence of TSG-6 don’t seem to show any major transcriptomic regulation.
Project description:Sequenced samples are cultured posterior parts of the first mouse molar tooth primordia. RNA sequencing was performed based on explants after 0, 16 or 24 hours of in vitro culture respectively, with aim to define candidate genes playing a role in the tooth germ development.
Project description:Maternal inheritance of mitochondrial DNA (mtDNA) is highly conserved in metazoans. While many species eliminate paternal mtDNA during late sperm development to foster maternal inheritance, the regulatory mechanisms governing this process remain elusive. Through a large-scale genetic screen in Drosophila, we identified 47 mutant lines exhibiting substantial retention of mtDNA in mature sperm. We mapped one line to Poldip2, a gene predominantly expressed in the testis. Disruption of Poldip2 led to pronounced mtDNA retention in mature sperm and subsequent paternal transmission to progeny. Further investigation via imaging, biochemical analyses and ChIP assays revealed that POLDIP2 is a mitochondrial matrix protein capable of binding to mtDNA. Moreover, we uncovered that CLPX, a key component of the major mitochondrial protease, binds to POLDIP2 to co-regulate mtDNA elimination in Drosophila spermatids. This study shed light on the mechanisms underlying mtDNA removal during spermatogenesis, underscoring the pivotal role of this process in safeguarding maternal inheritance.
Project description:We use Saccharomyces cerevisiae, grown on glucose and synchronized with CDC15-2, to map interactions of different cellular processes during the yeast cell cycle.
Project description:Peritoneal macrophages were obtained by intraperitoneal injection of cold PBS from Ldlr−/− mice reconstituted with Lyz2Cre+/− Nrp1flox/flox or Lyz2Cre+/− Nrp1+/+ bone marrow.