Mechanobiology of Lung Development and Function

Mechanobiology explores how mechanical forces shape lung development, architecture and function. During embryogenesis and postnatal growth, fluid pressure, tissue tension and cyclic stretch guide branching morphogenesis, alveolarisation and cellular differentiation. Mechanical cues are transduced via integrins, ion channels and the cytoskeleton to regulate gene expression, extracellular matrix remodelling and cell fate decisions. In the mature lung, cyclical expansion and contraction not only drive gas exchange but also maintain barrier integrity, modulate surfactant secretion and influence innate immune defences. Dysregulated mechanotransduction underlies a spectrum of disorders, from bronchopulmonary dysplasia and pulmonary fibrosis to acute respiratory distress, highlighting the critical interplay between biomechanics and lung health.

Research from Nature Portfolio

Recent studies using a human alveolus-on-chip model have demonstrated that physiologically relevant cyclic deformations suppress viral replication by activating mechanosensitive pathways. Cyclic stretch was found to enhance barrier function, trigger controlled cytokine release and recruit circulating immune cells. Key mediators include the TRPV4 ion channel and RAGE signalling, which together orchestrate protective innate responses. Pharmacological modulation of these targets attenuated inflammation and viral burden, offering promising avenues for therapeutic intervention in viral pneumonitis and other forms of lung inflammation driven by mechanical forces.

Mechanobiology of Lung Development and Function publication trend

The graph below shows the total number of articles in mechanobiology of lung development and function across all publications each year (not limited to Nature Index journals).

Technical terms

Mechanobiology: Study of how mechanical forces influence biological processes in tissues and cells.

Alveolar epithelial cells: Specialised cells lining the air-filled sacs of the lung responsible for gas exchange.

Fibroblast: Connective tissue cell that synthesises extracellular matrix and collagen in the lung.

Cyclic strain: Repetitive mechanical deformation applied to cells or tissues, mimicking breathing motions.

YAP: Transcriptional coactivator in the Hippo pathway activated by mechanical cues.

MAPK: Mitogen-activated protein kinases that transduce mechanical and chemical signals.

F-actin: Filamentous actin polymer forming the structural framework of the cytoskeleton.

TRPV4: Mechanosensitive ion channel mediating calcium influx in response to stretch.

RAGE: Receptor for advanced glycation end products that amplifies inflammatory signalling.

References

1. Mechanical control of innate immune responses against viral infection revealed in a human lung alveolus chip. Nature Communications (2022).
2. Tensile Overload Injures Human Alveolar Epithelial Cells through YAP/F-Actin/MAPK Signaling. Biomedicines (2023).
3. The effect of the mechanodynamic lung environment on fibroblast phenotype via the Flexcell. BMC Pulmonary Medicine (2024).
4. Compression Behavior of Extra-soft Porcine Lung Tissue at the Wide Strain Rate. Journal of Physics Conference Series (2023).