Project description:To characterize the consequences of cytokine stimulation, we compared ET02-GLIS2 expressing cells from different origins by single cell transcriptomes (scRNAseq). We analysed FL and CB ET02-GLIS2-expressing CD34+ progeny after 7 days in vitro, human cells from diseased NSG (FL- and FBM-derived) and NSGS (CB- and FL-derived) recipients.
Project description:Acute megakaryoblastic leukemia of Down syndrome (DS-AMKL) is a model of clonal evolution from a preleukemic transient myeloproliferative disorder requiring both a trisomy 21 (T21) and a GATA1s mutation to a leukemia driven by additional driver mutations. We modelled this leukemic evolution through stepwise gene editing of GATA1s, SMC3+/- and MPLW515K providing 20 different trisomy or disomy 21 iPSC clones. Single cell analysis was performed on hematopoietic cells obtained from IPSC clones after 13 days of differentiation. Sample preparation was done at room temperature. Single-cell suspensions were loaded onto a Chromium Single Cell Chip (10x Genomics) according to the manufacturer’s instructions for co-encapsulation with barcoded Gel Beads at a target capture rate of ~10,000 individual cells per sample. Captured mRNAs were barcoded during cDNA synthesis using the Chromium Next GEM Single Cell 3' GEM, Library & Gel Bead Kit v3.1 (10X Genomics) according to the manufacturer’s instructions. All samples were processed simultaneously with the Chromium Controller (10X Genomics) and the resulting libraries were prepared in parallel in a single batch. We pooled all of the libraries for sequencing in a single SP Illumina flow cell. All of the libraries were sequenced with an 8-base index read, a 28-base Read1 containing cell-identifying barcodes and unique molecular identifiers (UMIs), and a 91-base Read2 containing transcript sequences on an Illumina NovaSeq 6000.
Project description:In this in-vitro study, we demonstrated the different effects of exosomes produced by G361 melanoma cells on the functional properties of normal dermal fibroblasts and fibroblasts prepared from skin metastasis of cutaneous malignant melanoma. Both normal and cancer-associated fibroblasts were cultivated in either DMEM with 10% EDS (exosome-depleted serum) (control) or DMEM with 10% EDS + 10 microg/ml G361 exosomes (EXO). The cells were harvested after 24 hours of cultivation.
Project description:This single cell RNA-seq experiment was performed to quantify DLL3 expression in circulating tumor cells in small cell lung cancer patients to predict response to tarlatamab treatment. CTCs enriched from the blood of three SCLC patients prior or post tarlatamab treatment using the CTC-iChip followed by magnetic depletion of RBCs were processed with the 10x Genomics Chromium platform (Chromium GEM-X Single Cell 3' Kit v4) and sequenced on a NextSeq 2000 system. Corresponding EGA study number: EGAS50000001401, EGA dataset number: EGAD50000002035
Project description:Photo-damage represents an important aspect of cutaneous carcinogenesis. The photo-damaged microenvironment significantly facilitase progression of malignant melanoma. Therefore human primary dermal fibroblasts from photo-damaged adult skin and juvenile sun-protected skin were isolated and expanded as described by Dvorankova et al. (PMID: 29675784). Low passage fibroblasts were mixed in suspension (in ratio 1:1) with G361 malignant melanoma cell line (CVCL_1220). Using the hanging drop technique (PMID: 29786551), the melanoma/fibroblast spheres containing 50,000 cells per sphere were formed during the next 72 hours. The organoids were consequently maintained for another 2 days in non-adhesive culture wells in complete DMEM culture medium. At this time, heterogeneous spheres were harvested for immunohistochemical analysis or for further invasion studies. Single-cell suspensions from heterogeneous spheres were analysed by single-cell RNA sequencing (10x Chromium V3) to reveal the transcriptional heterogeneity of model cell populations under given conditions with emphasis on the features of dermal fibroblasts exposed to the influence of malignant melanoma.
Project description:Single cell RNA sequencing of monocytes and macrophages harvested from a YUMM1.7 tumor of mice 21 weeks after subcutaneous inoculation.
Project description:Single cell RNAseq from brain endothelial cells (BECs) isolated from wild-type and Iqgap2-/- (KO) mice to identify transcriptional changes in BECs caused by loss of Iqgap2. Mouse brains were dissociated to single cell suspension and labelled with CD31. CD31+ cells were flow sorted and processed for single cell RNAseq.
Project description:These are the Visium spatial transcriptomic data (10x Genomics) from 9 patients with Head and Neck Squamous Cell Carcinoma (oral cavity) treated in Gustave Roussy. Patients are stratified by their tumoral density of multinucleated giant cells (MGC) : 6 patients have high MGC density (patients 1, 2, 3, 4, 5, 8) and 3 have low MGC density (patients 6, 7, 9). There is one data file for each patient, except for one patient that has 3 data files (patient 1). Accordingly, there are 9 patients but 11 samples. The source code of the is available on GitHub (https://github.com/AhmedAmineAnzali/MGC_Paper_Analysis). The results are published in the paper untitled : Trem2-expressing multinucleated giant macrophages are a biomarker of good prognosis in head and neck squamous cell carcinoma (Gessain et al., 2024, Cancer Discovery). Please contact the corresponding author for more information.