Project description:Gene expression in satellite cell-derived primary myoblasts islolated from Gata4-loxP mice. Myoblasts were infected with nLacZ for control (Wt), Cre recombinase to knockout GATA4 (KO), or GATA4 expression vector to overexpress GATA4 (OE). Infected myoblasts were cultured in growth medium (day 0) then differentiated into myotubes in differentiation medium for 3 days (day 3). Total 18 samples. Three replicates in each myoblast; GATA4-Wt, -KO, and -OE myoblasts at day 0 and day 3.
Project description:To gain insights into the function and mechanism of Interleukin (IL)-18 in cancer cells, we conducted RNA-seq analysis to compare the gene expression profiles between IL-18 WT- and IL-18 D69A (IL-18 mutagenesis replacing aspartate (D) with alanine (A) at position 69)-overexpressing B16-F10 tumors. As expected, many genes were upregulated in IL-18 WT samples. Notably, transcripts related to many signaling pathways such as interferon signaling pathway were significantly enriched in samples expressing IL-18 WT.
Project description:Fatal COVID-19 is often complicated by hypoxemic respiratory failure and acute respiratory distress syndrome (ARDS). Mechanisms governing lung injury and repair in ARDS remain poorly understood because there are no biomarker-targeted therapeutics for patients with ARDS. We hypothesized that plasma proteomics may uncover unique biomarkers that correlate with disease severity in COVID-19 ARDS. We analyzed the circulating plasma proteome from 32 patients with ARDS and COVID-19 using an aptamer-based platform, which measures 7289 proteins, and correlated protein measurements with sequential organ failure assessment (SOFA) scores at 2 time points (Days 1 and 7 following ICU admission). We compared differential protein abundance and SOFA scores at each individual time point and identified 119 proteins at Day 1 and 46 proteins at Day 7 that correlated with patient SOFA scores. We modeled the relationship between dynamic protein abundance and changes in SOFA score between Days 1 and 7 and identified 39 proteins that significantly correlated with changes in SOFA score. Using Ingenuity Pathway Analysis, we identified increased ephrin signaling and acute phase response signaling correlated with increased SOFA scores over time, while pathways related to pulmonary fibrosis signaling and wound healing had an inverse relationship with SOFA scores between Days 1 and 7. These findings suggest that persistent inflammation may drive worsened disease severity, while repair processes correlate with improvements in organ dysfunction over time. This approach is generalizable to more diverse ARDS cohorts for identification of protein biomarkers and disease mechanisms as we strive towards targeted therapies in ARDS.
Project description:To study the cell composition and gene expression profile in the mesendoderm differentiation of WT and PHD2 knockout, we performed scRNA-seq on the cells collected from the differentiation of WT and PHD2 knockout AB2.2 mESCs at differentiation day 4. PHD2 knockoutout mESCs were constructed by CRISPR/Cas9. The differentiation was performed using a non-lineage tendency differentiation protocol.
Project description:Maize floury3 (fl3) is a classic semi-dominant mutant that shows severe defects in the endosperm but appears normal in the plant.The goals of this study are to compare WT to fl3 transcriptomes in 10DAP(day after pollination) endosperm by Next Generation Sequencing.
Project description:Cucurbits represent an attractive model to explore the dynamics of fruit set. Here we set out to characterize first fruit inhibition (FFI), i.e. the inhibitory effect of the first fruits on subsequent development of younger ovaries during pollination induced fruit set. After the first fertilized ovaries set fruit, younger ovaries fertilized above them on the main stem remained in a temporary state of inhibition. During this stage, the ovaries preserved their size and green color, and if the older fruits were removed within a one-week reversibility window, the inhibited ones set fruit. We compared the gene expression profiles of pollinated ovaries (committed to set fruits) with respect both to those affected by FFI and to non-pollinated ovaries (comitted to senescence). The three fates of the ovaries were characterized at 1 day post anthesis, compare to anthesis, by wide changes in gene expression, with several specific transcripts being up- or down-regulated in response to the presence (or absence) of pollination. Metabolic profiling was undertaken and integrated with the transcriptomic data in order to characterize early physiological changes that occur in post-anthesis ovaries in parthenocarpic and non-parthenocarpic genotypes.
Project description:The objective of the study is to caracherize the genes that are regulated by Srf in myoblasts at day 0 (J0) and in differentiated cells at day 1 (J1) and day 3 (J3). We used microarrays to investigate gene expression in Srf KO and Srf WT muscle cells at day 0 (J0), day 1 (J1) and day 3 (J3) of differentiation
Project description:To identify a physiologic postanal transcriptomic program between postnatal day 20 and 60, we first analyzed the gene expression profile in 60 day-old ( young adult) wild-type mice (WT) and compared it to 20 day-old WT mice To identify the gene expression between postnatal day 20 and 60 under the strict dependence of cardiac ephrin-B1, we compared gene expression in 20 day-old and 60 day-old Efnb1 CMspe KO (a-MHC-Cre-/+ Efnb1 flox/flox or) to 20 day-old and 60 day-old WT mice
Project description:For RNA sequencing (RNAseq), CD34+ hematopoietic stem cells (HSC) were isolated from healthy controls before transduction with WT-SRC and E527K-SRC lentiviral vectors in triplicate and differentiation to MK. RNA was extracted from the complete cell population as the aim was to detect differences in genes regulating MK maturation and differentiation. A total of six WT-SRC and six E527K-SRC RNA samples were used for RNAseq to identify differentially expressed genes.