Project description:Mechanically dissociated IPF lung explant derived cellular suspensions were cultured in 50% senescent lung fibroblast conditioned medium + 50% fibroblast complete medium (DMEM + 15% FBS + antiboitics) and 10 µM of Y27632. After approximately 2 weeks, cells were passaged and cultured overnight in Pneumacult Ex Plus medium (STEMCELL technologies).
Project description:To determine the effects of fibroblast crosstalk on healthy airway epithelial cells, we performed RNA sequencing on isolates from airway epithelial cells co-cultured with control and idiopathic pulmonary fibrosis (IPF) fibroblasts.
Project description:Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the COVID-19 pandemic. While most patients can clear the infection and recover, some develop severe symptoms associated with dysregulated immune activation that leads to injury of lungs. Clinical studies found that severities of COVID-19 patients correlated with levels of mucosa-homing CCR10+ immunoglobulin A (IgA) antibody-secreting cells (IgA-ASCs) while recovery was linked to expansion of CCR10+ type 2 innate lymphoid cells (ILC2s). However, exact roles of CCR10-regulated mucosal immune responses in SARS-CoV-2 infection and pathology are not clear. Here, we addressed these questions using CCR10-knockout (KO) mice infected with a mouse-adapted strain of SARS-CoV-2. SARS-CoV-2-infected CCR10-KO mice had reduced IgA-ASCs but increased ILCs and T cells in lungs compared to control wild-type (WT) mice. However, CCR10-KO mice cleared SARS-CoV-2 as efficiently as WT mice, suggesting that CCR10-regulated mucosal immune responses are not critical for viral clearance. On the other hand, CCR10-KO mice, particularly males, were impaired in recovery from SARS-CoV-2-induced lung damages due to the immune dysregulation. Intranasal immunization overcame defective mucosal immune responses and prevented SARS-CoV-2-induced lung pathology in CCR10-KO mice. Our results revealed an important role of CCR10-regulated mucosal immune responses in restoration of lung homeostasis after SARS-CoV-2 infection.
Project description:We identified decreases in circulating CCR10+ Tregs in human hypertension. In order to better determine the phenotype of these cells, we performed bulk RNA sequencing of flow sorted human CCR10+ versus CCR10- Tregs from healthy control individuals. Results revealed evidence of increased T cell activation in CCR10+ Tregs.
Project description:This study seeks to characterize airway epithelial gene expression across small, medium and large airways in the normal human lung.
Project description:We previously found that while CCR10+ ILCs are dominant in the healthy skin, they differentiate into CCR10- ILCs in the skin of mice with various dysregulated or inflammatory conditions, such as T/B cell-deficient Rag1-/- mice. These suggest that CCR10- ILCs are activated effector cells in response to altered skin environments. To gain clues about the functional mechanism and regulation of the ILC activation in the skin, we compared gene expression profiles of CCR10+ skin ILCs of wild-type (WT) mice versus CCR10- or CCR10low skin ILCs of WT and Rag1-/- mice using microarray analyses. Skin innate lymphoid cells were isolated by BD FACSAria sorting system. The microarry was perfomanced by Immunological Genome Project using Affymetrix arrays and used for analysis of gene expresssion of CCR10+ ILCs and CCR10- ILCs in different mice species as indicated.