Cell Population-resolved Multiomics Atlas of the Developing Lung

Area of Science:

• Pulmonology
• Cell Biology
• Developmental Biology

Background:

• The lung undergoes significant changes after birth.
• Understanding cell-specific contributions to lung development is crucial.

Purpose of the Study:

• To analyze proteomic and transcriptomic profiles of distinct lung cell populations during early postnatal development.
• To identify cell-specific molecular signatures and developmental shifts.

Main Methods:

• Proteomic and transcriptomic analyses of sorted epithelial, endothelial, mesenchymal, and immune cells from human lungs (0-8 years).
• RNA in situ hybridization and immunofluorescence imaging to validate marker expression and spatial distribution.
• Comparison of proteomic data with transcriptomic data to assess post-transcriptional regulation.

Main Results:

• Distinct molecular signatures were identified for each cell population, varying with age.
• Cell-specific protein markers, including cell surface markers, were identified and spatially validated.
• Temporal proteomic analyses revealed developmental modulation of processes and clarified whole-tissue findings.

Conclusions:

• The study provides a detailed molecular atlas of developing lung cell populations.
• Identified markers and pathways offer insights into lung development and potential therapeutic targets.
• Findings highlight the importance of cell-specific analysis in understanding organogenesis.