Hair Follicle regeneration relies on both epithelial components (bulge and hair germ cells) and a mesenchymal one (dermal papilla cells).
A two-step mechanism for stem cell activation during hair regeneration.
Specimen part
View SamplesThe purpose of this study was to assess transcriptome changes in primary human airway epithelial cells following stimulation with RIG-I ligand. Overall design: MRNA profiles were generated from primary human airway epithelial cells at rest or following stimulation with RIG-I ligand SLR-14.
Regional Differences in Airway Epithelial Cells Reveal Tradeoff between Defense against Oxidative Stress and Defense against Rhinovirus.
Specimen part, Treatment, Subject
View SamplesThe purpose of this study was to assess transcriptome changes in primary human airway epithelial cells following stimulation with RIG-I ligand. Overall design: MRNA profiles were generated from primary human airway epithelial cells at rest or following stimulation with RIG-I ligand.
Regional Differences in Airway Epithelial Cells Reveal Tradeoff between Defense against Oxidative Stress and Defense against Rhinovirus.
Specimen part, Treatment, Subject
View SamplesThe tyrosine kinase ErbB2 positive breast tumors have more aggressive tumor growth, poorer clinical outcome, and more resistance to radiotherapy, chemotherapy and hormone therapy. A humanized anti-ErbB2 monoclonal antibody Herceptin and a small molecules inhibitor Lapatinib were developed and approved by FDA to treat patients with ErbB2 amplification and overexpression. Unfortunately, most ErbB2+ breast cancers do not respond to Herceptin and Lapatinib, and the majority of responders become resistant within 12 months of initial therapy (defined as secondary drug resistance). Such differences in response to Lapatinib treatment is contributed by substantial heterogeneity within ErbB2+ breast cancers. To address this possibility, we carried out transcriptomic analysis of mammary tumors from genetically diverse MMTV-ErbB2 mice. This will help us to have a better understanding of the heterogeneous response to ErbB2 targeted therapy and permit us to design better and more individualized (personalized) treatment strategies for human ErbB2 positive breast cancer.
Unraveling heterogeneous susceptibility and the evolution of breast cancer using a systems biology approach.
Specimen part
View SamplesStandardization of MSC manufacturing is urgently needed to facilitate comparison of clinical trial results. Here, we compare gene expression of MSC generated by the adaptation of a proprietary method for isolation and cultivation of a specific umbilical cord tissue-derived population of Mesenchymal Stromal Cells (MSCs)
Towards an advanced therapy medicinal product based on mesenchymal stromal cells isolated from the umbilical cord tissue: quality and safety data.
No sample metadata fields
View SamplesWe analyzed total leukocyte gene expression using Affymetrix microarrays from healthy smokers, COPD patients and non-smoking control subjects before and after exposure to acute cigarette smoke (smoking two cigarettes in 30 minutes).
Systemic inflammatory response to smoking in chronic obstructive pulmonary disease: evidence of a gender effect.
Sex, Specimen part, Disease
View SamplesGene expression in eukaryotes is an essential process that includes transcription, pre-RNA processing and RNA export. All these steps are coupled and normally, any failure in one step affects the other steps and could cause nuclear mRNA retention. One important player in this interface is the poly(A)-RNA binding protein Nab2, which regulates the poly(A)-tail length of mRNAs protecting their 3-ends from a second round of polyadenylation and facilitating their nucleo-cytoplasmic export. Interestingly, here we show that Nab2 has additional roles in mRNA transcription elongation, tRNA metabolism and rRNA export.
Nab2 functions in the metabolism of RNA driven by polymerases II and III.
No sample metadata fields
View SamplesInnate immune response is the first line of antiviral defense resulting, in most cases, in pathogen clearance with minimal clinical consequences. Viruses have developed diverse strategies to evade innate immune response and to ensure their survival. Using transmissible gastroenteritis virus (TGEV) as a model, we previously reported that accessory gene 7 counteracts host antiviral response by its association with the catalytic subunit of protein phosphatase 1 (PP1c). A transcriptomic analysis was performed to further investigate the effect of gene 7 absence on the host cell.
Alphacoronavirus protein 7 modulates host innate immune response.
Specimen part, Cell line, Time
View SamplesGene expression in eukaryotes is an essential process that includes transcription, pre-RNA processing and RNA export. All these steps are coupled and normally, any failure in one step affects the other steps and could cause nuclear mRNA retention. One important player in this interface is the poly(A)-RNA binding protein Nab2, which regulates the poly(A)-tail length of mRNAs protecting their 3-ends from a second round of polyadenylation and facilitating their nucleo-cytoplasmic export. Interestingly, here we show that Nab2 has additional roles in mRNA transcription elongation, tRNA metabolism and rRNA export.
Nab2 functions in the metabolism of RNA driven by polymerases II and III.
No sample metadata fields
View SamplesPolycomb group proteins (PcG) are well known by their function in the regulation of developmental processes. PcG mediated regulation of genetic programs required for proper development are triggered by EZH2 H3K27 methyltransferase activity. EZH1 can partially substitute EZH2 activity. However, unlike EZH2, EZH1 is presence in differentiated and adult tissues suggesting additional biological functions. Here we show that EZH2 is predominantly expressed in neural stem cells being essential for neural stem cells self renewal and homeostasis. There, it controls the transcriptional state of cell cycle regulators, such as CIP1. But it is also necessary to regulate genes involved in surveillance and neuroepithelial polarity. In contrast, EZH1 expression is more abundant in differentiated cells within the spinal cord and its downregulation unables neural stem cells to differentiate. All together our data reveal a complementary but non-redundant role of EZH2 and EZH1 in neurogenesis.
EZH2 regulates neuroepithelium structure and neuroblast proliferation by repressing p21.
Specimen part
View Samples