Mechanotransduction in Cardiovascular Stem Cell Systems

Mechanotransduction governs how cardiovascular stem cells and their progeny perceive and convert mechanical inputs—such as matrix stiffness, shear stress and cyclic strain—into biochemical signals that direct lineage commitment, maturation and function. In the developing heart, fluid shear and tissue stretch shape endothelial and mesenchymal progenitors, guiding vascular patterning and chamber morphogenesis. In engineered constructs, substrate elasticity and topography regulate cardiac progenitor differentiation via integrin engagement, cytoskeletal remodelling and nuclear mechanosensors including the YAP/TAZ pathway. At the cellular level, forces transmitted through focal adhesions and the LINC complex elicit chromatin reorganisation and gene-expression programmes that underpin electrophysiological maturation and contractile assembly. Dysregulation of mechanotransductive cues contributes to pathological remodelling in myocardial infarction and fibrosis, underscoring the need to recapitulate native mechanics in regenerative therapies. Advances in biomaterial design, microfabrication and high-resolution force mapping have deepened our understanding of the interplay between physical microenvironment and stem cell fate, paving the way for mechanically informed strategies to enhance cardiac repair, disease modelling and drug screening.

Research from Nature Portfolio

Recent studies have leveraged atomic force microscopy to dissect how inherited nuclear envelope defects alter stem-cell-derived cardiomyocyte mechanics. Analyses of cells harbouring a lamin A/C mutation revealed increased nuclear stiffness, heightened deformation under load and weakened adhesion to extracellular substrates. These biomechanical aberrations were traced to disrupted coupling between the nucleoskeleton, cytoskeleton and focal adhesions, impairing force transmission and altering downstream gene expression. By elucidating how nuclear mechanics influence whole-cell responses, this work provides a foundational framework for understanding mechanotransduction in genetically defined cardiac cell models.

Mechanotransduction in Cardiovascular Stem Cell Systems publication trend

The graph below shows the total number of articles in mechanotransduction in cardiovascular stem cell systems across all publications each year (not limited to Nature Index journals).

Technical terms

Mechanotransduction: The conversion of mechanical forces into intracellular biochemical signals.

Extracellular matrix (ECM): A network of proteins and polysaccharides that provides structural support and mechanical cues to cells.

Induced pluripotent stem cells (iPSC): Somatic cells reprogrammed to a pluripotent state capable of differentiating into cardiovascular lineages.

Hydrogel: A hydrated polymer scaffold that mimics tissue elasticity and permits modulation of mechanical properties.

Yes-associated protein (YAP): A mechanosensitive transcriptional co-activator that translocates to the nucleus in response to force.

Atomic force microscopy (AFM): A nanoscale technique that measures cell and substrate mechanics by probing with a cantilever tip.

References

1. Mechanotransduction in the Cardiovascular System: From Developmental Origins to Homeostasis and Pathology. Cells (2019).
2. The Cardiomyopathy Lamin A/C D192G Mutation Disrupts Whole-Cell Biomechanics in Cardiomyocytes as Measured by Atomic Force Microscopy Loading-Unloading Curve Analysis. Scientific Reports (2015).
3. Stiffness‐Tunable Hydrogel‐Sandwich Culture Modulates the YAP‐Mediated Mechanoresponse in Induced‐Pluripotent Stem Cell Embryoid Bodies and Augments Cardiomyocyte Differentiation. Macromolecular Bioscience (2023).
4. A Review of in vitro Platforms for Understanding Cardiomyocyte Mechanobiology. Frontiers in Bioengineering and Biotechnology (2019).