Project description:Trachel aspirates samples were collected from an observational cohort of mechanically ventilated patients to compare respiratory tract gene expression in previous-descried ARDS molecular phenotypes. Patient charts were reviewed by two physicians and patients with ARDS were identified using the Berlin Definition. Control subjects were mechanically ventilated for neurologic indications, were not immunosuppressed, and had no evidence of pulmonary disease. ARDS molecular phenotypes were defined using a previously-described 3-variable classifier (Sinha 2020)
Project description:We compared differential gene expression in tracheal aspirates collected mechanically ventilated subjects with COVID-19 ARDS to gene expression in tracheal aspirates from: 1) subjects with ARDS from other casues and 2) mechanically ventilated controls without evidence of pulmonary disease.
Project description:Trachel aspirates samples were collected from an observational cohort of mechanically ventilated patients to compare respiratory tract gene expression in previous-descried ARDS molecular phenotypes. Patient charts were reviewed by two physicians and patients with ARDS were identified using the Berlin Definition. ARDS molecular phenotypes were defined using a previously-described 3-variable classifier (Sinha 2020)
Project description:Tracheal aspirate was collected from intubated patients with SARS-CoV-2 infections or for reasons not related to COVID-19 (controls). The proteins were extracted using the MPLEx method. Proteins were digested with trypsin and analyzed by LC-MS/MS on a Thermo Q Exactive HF-X. Data was searched with MaxQuant.
Project description:Bronchopulmonary dysplasia remains one of the most common complication of prematurity, despite significant improvements in perinatal care. Functional modeling of human lung development and disease, like BPD, is limited by our ability to access the lung and to maintain relevant stem cell populations in culture. Single cell RNA-sequencing confirmed the presence of epithelial cells in tracheal aspirates obtained from intubated neonates. Using combined SMAD signaling inhibition and mTOR inhibition neonatal tracheal-aspirate derived (nTAD) basal stem cells can be expanded long-term and retain the ability to differentiate into pseudo-stratified airway epithelium. Conclusions: Our data demonstrate that neonatal tracheal aspirate-derived epithelial cells can provide a novel ex vivo human cellular model to study neonatal lung development and disease.
Project description:Bronchopulmonary dysplasia remains one of the most common complication of prematurity, despite significant improvements in perinatal care. Functional modeling of human lung development and disease, like BPD, is limited by our ability to access the lung and to maintain relevant stem cell populations in culture. Single cell RNA-sequencing confirmed the presence of epithelial cells in tracheal aspirates obtained from intubated neonates. Using combined SMAD signaling inhibition and mTOR inhibition neonatal tracheal-aspirate derived (nTAD) basal stem cells can be expanded long-term and retain the ability to differentiate into pseudo-stratified airway epithelium. Conclusions: Our data demonstrate that neonatal tracheal aspirate-derived epithelial cells can provide a novel ex vivo human cellular model to study neonatal lung development and disease.