The stroma-vascular compartment: central facilitator of the damage response and repair across organs

This is the authors' abstract. We don't add key points for this paper.

Tissue injury initiates a complex, multicellular programme whose outcome i.e. functional repair or irreversible fibrosis, is determined by the coordinated activity of the stroma-vascular compartment (SVC). This network of resident fibroblasts, vascular mural cells, endothelial cells and immune populations acts as a gatekeeper of tissue integrity. Following ischaemia, trauma, or mechanical damage, extracellular danger signals are sensed by pattern-recognition receptors and transduced into cell type-specific metabolic and mechanical responses. An initial inflammatory wave clears cellular debris, after which endothelial sprouting and matrix deposition proceed toward scar maturation; a collagen-rich structure whose geometry ultimately governs future perfusion. Epigenetic reprogramming and metabolic rewiring enforce each of these transitions while simultaneously imprinting a memory that skews subsequent responses in the context of ageing, diabetes, chronic inflammation or clonal haematopoiesis. Targeting the SVC, rather than the parenchyma alone, now underpins therapeutic strategies spanning precision senolytics, engineered stromal cell grafts, and biomechanically instructive scaffolds.