Cell & stem-cell biology
Cell identity, fate and communication
Understanding how cells divide, differentiate, migrate and respond to injury is foundational. Stem and progenitor populations vary in self-renewal and lineage potential, and can influence repair through differentiation, direct contact and paracrine signalling.1
Developmental biology
Re-using programmes that build tissues
Wnt, Notch, Hedgehog, BMP and TGF-β signalling help pattern developing tissues and regulate adult homeostasis. Their effects are highly dependent on timing, dose and cellular context; dysregulation can also contribute to fibrosis or tumour formation.2
Immunology & vascular biology
Resolving inflammation and restoring supply
Immune cells can initiate repair, clear damaged material and coordinate stromal responses. Persistent or mistimed inflammation may instead drive chronic injury and fibrosis. Regenerating tissue also requires oxygen and nutrients, making angiogenesis, endothelial repair and microvascular remodelling central to many strategies.3
Biomaterials & precision biology
Engineering the regenerative environment
Scaffolds, matrices and hydrogels can provide structure and deliver biological cues. Single-cell and spatial profiling now reveal which cell states and neighbourhoods are associated with repair or disease, informing biomaterial design and patient stratification.1
Matrix biology
Extracellular matrix and mechanobiology
Cells continuously sense matrix stiffness, geometry and mechanical load through adhesion complexes and the cytoskeleton. These signals influence survival, migration, lineage commitment and fibrosis; consequently, a biomaterial is an active biological environment rather than an inert carrier.2
Regeneration also depends on metabolism. Oxygen availability, mitochondrial fitness, redox balance and nutrient use shape immune-cell behaviour and stem-cell state, linking vascular repair to tissue recovery.