Project description:Using mouse lung resident conventional CD11b+ dendritic cells (CD11b+ cDCs) in the context of house-dust mite (HDM)-driven allergic airway sensitization as a model, we aimed here to identify transcriptional events regulating the pro-Th2 activity of cDCs. We used microarray analyses to identify genes differentially expressed by lung CD11b+ conventional dendritic cells in response to house dust mite allergens in wild-type and Irf3-deficient mice
Project description:Here, we use a microfluidics-based approach to prepare single-cell RNA-Seq libraries from 164 primary human conventional dendritic cells (cDCs) as well as cord blood (452) and blood (341) pre-cDCs. We examined heterogeneity between individual cells to document potential subpopulations within human cDCs and pre-cDCs.
Project description:Conventional dendritic cells (cDCs) in the lung that drive effector T cell differentiation, and initiate allergic responses upon inhalation of allergens. However, since CD11b+ cDCs are heterogeneous, the specific function of each subpopulation has been elusive. To identify subpopulations of CD11b+ cDCs, we performed single cell RNA-sequencing (scRNAS-Seq) of total lung CD11b+ cDCs following inhalation of house dust extracts, and detected multiple clusters based on their differential transcriptomes. The data will be applicable for studies of cDC function in induction of T cell differentiation as well as the maturation pathway of cDCs.
Project description:Conventional dendritic cells (cDCs) in the lung drive effector T cell differentiation, and initiate allergic responses upon inhalation of allergens. However, CD11b+ cDCs are composed Ly-6C+ and Ly-6C– subpopulations, and the specific function of each subpopulation has been elusive. Since Ly-6C+ CD11b+ cDCs lost the surface display of Ly-6C upon ex vivo culture, we hypothesized that Ly-6C+ cDCs are precursors of Ly-6C– cDCs. To determine whether 2 CD11b+ cDC subpopulations become the same cell types after maturation, we compared their transcriptomes after ex vivo cultue. As controls, we also compared transcriptomes of freshly isolated Ly-6C+ and Ly-6C– cDCs. Their transcriptomes were also compared with another CD103+ cDCs and monocytes.
Project description:Characterization of proteins in extracellular vesicles (EV) from cardiosphere-derived cells (CDCs) of a clinically relevant pig model. Additionally, considering that priming stem cells with inflammatory stimuli may increase the therapeutic potential of released vesicles, here we studied the dynamic changes that take place in the EV from IFNγ-primed CDCs.
Project description:To characterize differences between BALB/c splenic CD11cintB220+Gr1+ PDCs (plasmacytoid dendritic cells), CD11cintB220+CD49b+ IKDCs (interferon producing killer-dendritic cells), and CD11chighB220- cDCs (conventional dendritic cells), we performed gene expression profile analysis using Affymetrix chips. We FACS-sorted BALB/c spleen DC subpopulations. Comparison of differentially expressed genes between IKDCs and cDCs vividly revealed selective expression of multiple NK-related genes in IKDCs . These included granzymes A, B, K and M, perforin, Fas ligand, and NK receptors such as NKG2A, NKG2D, Ly49 family genes, NKR-P1, NKG7, NKp46 and Mafa (KLRG1). No NK-related genes were highly expressed in the PDCs. Experiment Overall Design: We prepared two biological samples separately for each DC population, and analyzed the expression profiles by comparing to those of cDCs (control sample).