This study was conducted to determine heterogeneity of cancer-associated fibroblasts (CAFs) in mammary tumors, by unsupervised analysis of single cell transcriptomes. Overall design: 768 single EpCAM-, CD45-, CD31- NG2- fibroblasts were isolated from mammary tumors of two 14 week old MMTV-PyMT mice. The cells were sequenced following the Smart-Seq2 protocol (Picelli et al. Nature Methods 2013).
Spatially and functionally distinct subclasses of breast cancer-associated fibroblasts revealed by single cell RNA sequencing.
Age, Specimen part, Cell line, Subject
View SamplesWe study the global gene expression profiles of BKV viremia and nephropathy patients using microarrays in order to better understand the immunologic response to polyomavirus BK (BKV).
Genomics of BK viremia in kidney transplant recipients.
Specimen part, Disease
View SamplesWhole-genome expression studies in peripheral tissues of patients affected by schizophrenia (SCZ) can provide new insights into the molecular basis of the disorder and innovative biomarkers that may be of great usefulness in the clinical practice. Recent evidence suggests that skin fibroblasts could represent a non-neural peripheral model useful to investigate molecular alterations in psychiatric disorders.
Altered gene expression in schizophrenia: findings from transcriptional signatures in fibroblasts and blood.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesWe investigated the clinical, histopathologic and genomic features of donor-specific antibody (DSA) +/C4d- and DSA-/C4d- transplant glomerulopathy (TGP) using microarrays. Comparison of the gene expression profiles of DSA-/C4d- TGP biopsies with ptc+g score > 1 to normal and IFTA (Interstitial Fibrosis and Tubular Atrophy) biopsies by microarrays revealed increased expression of quantitative cytotoxic T cell--associated transcripts (QCAT). However, CAMR (chronic antibody-mediated rejection) and DSA+/C4d- TGP had increased expression of QCAT, interferon-gamma and rejection induced, constitutive macrophage-associated, natural killer cell-associated, and DSA selective transcripts. B cell and endothelial cell associated transcripts expression were upregulated only in CAMR biopsies. Our results suggest that while DSA+/C4d- TGP should be classified under CAMR, DSA-/C4d- TGP with ptc+g score > 1 probably develops through a chronic cellular immune response.
The clinical and genomic significance of donor-specific antibody-positive/C4d-negative and donor-specific antibody-negative/C4d-negative transplant glomerulopathy.
Specimen part
View SamplesWe study the global gene expression profiles of TGP patients with or without graft loss to determine if a clinical and/or gene expression profile can predict allograft survival.
Clinical, Histological, and Molecular Markers Associated With Allograft Loss in Transplant Glomerulopathy Patients.
Specimen part
View SamplesHuman infection with Cryptococcus neoformans (Cn), a prevalent fungal pathogen, occurs by inhalation and deposition in the lung alveoli of infectious particles. The subsequent host pathogen interaction is multifactorial and can result either in eradication, latency or extra-pulmonary dissemination. Successful control of Cn infection is dependent on host macrophages as shown by numerous studies. However in vitro macrophages display little ability to kill Cn. Recently, we reported that ingestion of Cn by macrophages induces early cell cycle progression that is subsequently followed by mitotic arrest, an event that almost certainly reflects damage to the host cell. The goal of the present work was to understand macrophage pathways affected by Cn toxicity. Infection of J774.16 macrophage-like cell line macrophages by Cn in vitro was associated with changes in gene pattern expression. Concomitantly we observed depolarization of macrophage mitochondria and alterations in protein translation rate. Our results indicate that Cn infection impairs multiple host cellular functions. Therefore we conclude Cn intracellular residence in macrophages undermines the health of these critical phagocytic cells interfering with their ability to clear the fungal pathogen.
Macrophage mitochondrial and stress response to ingestion of Cryptococcus neoformans.
Specimen part, Cell line, Time
View SamplesWe identified the ubiquitin ligase Huwe1 as a crucial regulator of hematopoietic stem cell (HSC) functions. We generated Huwe1 conditional knock-out mice and discovered that the loss of this ligase causes an increased proliferation and stem cell exhaustion, together with a decreased lymphoid specification in vivo. We observed that the ubiquitin ligase Huwe1 is controlling the expression of N-myc at the level of the most immature stem and progenitor hematopoietic populations, mediating the described effects. Overall design: High-troughput RNA-sequencing of sorted HSC (Lin-Sca+Kit+CD48-CD150+) from wild type or Huwe1 conditional knockout mice (constitutively deleted with Vav-Cre recombinase or inducibly deleted with Mx1-Cre)
The ubiquitin ligase Huwe1 regulates the maintenance and lymphoid commitment of hematopoietic stem cells.
Specimen part, Subject
View SamplesWe identified the ubiquitin ligase Huwe1 as a crucial regulator of hematopoietic stem cell (HSC) functions. We generated Huwe1 conditional knock-out mice and discovered that the loss of this ligase causes an increased proliferation and stem cell exhaustion, together with a decreased lymphoid specification in vivo. We observed that the ubiquitin ligase Huwe1 is controlling the expression of N-myc at the level of the most immature stem and progenitor hematopoietic populations, mediating the described effects.
The ubiquitin ligase Huwe1 regulates the maintenance and lymphoid commitment of hematopoietic stem cells.
Specimen part
View SamplesThe presence of Donor-Specific anti-HLA Antibodies (DSA) is associated with an increased risk of both acute and chronic antibody-mediated rejection (AMR) in kidney allografts. AMR has remained challenging in kidney transplantation and is the major cause of late allograft loss. However, not all patients with DSA develop AMR, leading to the question of whether this represents accommodation, if other protective mechanisms exist or if this is actually a state of pre-rejection.
A pathogenesis-based transcript signature in donor-specific antibody-positive kidney transplant patients with normal biopsies.
Specimen part
View SamplesThis study is part of a larger effort set to determine the factors requried for the crosstalk between tumor cells and fibroblasts in breast cancer.
Microenvironmental control of breast cancer subtype elicited through paracrine platelet-derived growth factor-CC signaling.
Specimen part, Cell line, Treatment
View Samples