Arteriogenesis and Vascular Remodeling Mechanisms

Arteriogenesis refers to the growth and enlargement of pre-existing collateral arteries in response to arterial occlusion or altered shear stress. This adaptive process involves coordinated changes in endothelial cells, vascular smooth muscle cells and perivascular immune cells, leading to progressive lumen expansion, vessel wall remodelling and restored tissue perfusion. Endothelial cells sense elevated shear forces and release chemokines and growth factors that recruit monocytes and macrophages. These immune cells secrete proteases and cytokines that modify the extracellular matrix and stimulate smooth muscle cell proliferation and phenotype switching. Together, these events drive outward remodelling of collateral conduits capable of compensating for compromised flow, with implications for the treatment of ischaemic vascular disease and tissue regeneration.

Research from Nature Portfolio

Recent studies have delineated the dynamic roles of distinct inflammatory cell subsets in neovascularisation and tissue healing after vascular injury. In a radiation-induced injury model, early mobilisation of monocytes and T cells from spleen and bone marrow correlated with enhanced capillary density and angiographic scores. Over the ensuing weeks, shifts in macrophage polarisation were linked to phases of vessel growth and subsequent rarefaction. Genetic deficiency of key chemokine receptors impaired neovascularisation, whereas adoptive transfer of high-inflammatory monocytes rescued vessel growth, emphasising the temporal orchestration of immune waves as essential drivers of arteriogenesis and vascular repair.

Arteriogenesis and Vascular Remodeling Mechanisms publication trend

The graph below shows the total number of articles in arteriogenesis and vascular remodeling mechanisms across all publications each year (not limited to Nature Index journals).

Technical terms

Arteriogenesis: The enlargement and remodelling of pre-existing collateral arteries to restore blood flow following arterial occlusion.

Angiogenesis: The formation of new capillary networks from existing microvessels, primarily driven by endothelial cell proliferation and migration.

Shear stress: The frictional force exerted by flowing blood on endothelial surfaces, which acts as a primary trigger for arteriogenic signalling.

Phenotype switching: The process by which vascular smooth muscle cells transition between a contractile state and a synthetic, proliferative state during vessel remodelling.

Collateral artery: A small arteriole that enlarges into a functional bypass vessel in response to obstructed main arteries.

References

1. Inflammatory cells dynamics control neovascularization and tissue healing after localized radiation induced injury in mice. Communications Biology (2023).
2. The Complement System Is Essential for Arteriogenesis by Enhancing Sterile Inflammation as a Relevant Step in Collateral Artery Growth. Cells (2024).
3. Rag1 Deficiency Impairs Arteriogenesis in Mice. International Journal of Molecular Sciences (2023).
4. Role of Vascular Smooth Muscle Cell Phenotype Switching in Arteriogenesis. International Journal of Molecular Sciences (2021).