Project description:The goal of this study was to establish the gene expression profile of naïve B-cells from CTCFfl/+;CD19-Creki/+ mice, using RNA-seq technology.
Project description:The goal of this study was to compare the CTCF binding expression profile, using ChIP-seq technology, of naïve B-cells from CTCFfl/fl; CD19-Creki/+ or CTCFfl/+; CD19-Creki/+ mice.
Project description:Myocardial CD19+CD11b+ and CD19+CD11b- cells were FACS sorted from transgenic mice expressing the Diphtheria Toxin (DT) receptor under the myocardial specific MLC2v promoter. Cells were sorted from hearts of mice not exposed to DT (naïve hearts), from the hearts of animals treated with DT 4 days prior to the experiment (DTR) and from the hearts of mice exposed to DT and fed chow enriched with the anti-inflammatory/anti-fibrotic drug Pirfenidone (0.5% in powdered chow, PFD)
Project description:Long-lived, self-renewing, multipotent T memory stem cells (TSCM) can trigger profound and sustained tumor regression but their rareness poses a major hurdle to their clinical application. Presently, clinically compliant procedures to generate relevant numbers of this T cell population are undefined. Here, we provide a strategy for deriving large numbers of clinical grade tumor-redirected TSCM cells starting from naïve precursors. CD8+CD62L+CD45RA+ naïve T cells enriched by streptamer-based serial positive selection were activated by CD3/CD28 engagement in the presence of IL-7, IL-21 and the glycogen synthase-3β inhibitor TWS119, and genetically engineered to express a CD19-specific chimeric antigen receptor (CD19-CAR). These conditions allowed for the generation of CD19-CAR modified TSCM cells that were phenotypically, functionally and transcriptomically equivalent to their naturally occurring counterpart. Compared with T cell products currently under clinical investigation, CD19-CAR modified TSCM cells exhibit enhanced metabolic fitness, persistence and anti-tumor activity against systemic acute lymphoblastic leukemia xenografts. Based on these findings, we have initiated a phase 1 clinical study to evaluate the activity of CD19-CAR modified TSCM in patients with B-cell malignancies refractory to prior allogeneic hematopoietic stem cell transplantation.
Project description:Microarrays of gene expression in mouse germinal center B cells photoactivated in the light zone or dark zone, and of naïve cells for comparison. We used microarray data to identify genes differentially expressed by B cells in the light and dark zones of the germinal center. Light and dark zone cells were photoactivated in day 7 germinal centers and sorted by flow cytometry. Naïve splenic B cells(IgD+CD19+) were sorted for comparison.
Project description:Investigation of the change of the Trail-dependent NK cell transcriptome during short-term (24h) infection with lymphocytic choriomeningitis virus (LCMV). RNA sequencing-based transcriptomics analysis was performed in spleen-isolated (NK1.1+CD3-) NK cells from 3 naïve Trail+/+ mice, 3 naive Trail-/- mice, 4 LCMV-infected Trail+/+ mice, and 4 LCMV-infected Trail-/- mice.
Project description:The age and sex of studied animals profoundly impacts experimental outcomes in animal-based biomedical research. However, most preclinical studies in mice use a wide-spanning age range from 4 to 14 weeks and do not assess study parameters in male and female mice in parallel. This raises concerns regarding reproducibility and neglect of potentially relevant age and sex differences. Furthermore, the molecular setup of tissues in dependence of age and sex is unknown in naïve mice precluding efficient translational research. Here, we first compared two different mass spectrometric acquisition methods – DDA- and DIA-PASEF – in order to maximize the depth of proteome quantitation. We then employed an optimized workflow of quantitative proteomics based on DIA-PASEF followed by DIA-NN data analysis, and revealed significant differences in mouse paw skin and sciatic nerve (SCN) when comparing (i) male and female mice, and, in parallel, (ii) adolescent mice (4 weeks) with adult mice (14 weeks).