Treffer: A Multiscale Computational Model of Endothelial-Immune Cell Interactions Regulated by Dynamic Wall Shear Stress.

Title:
A Multiscale Computational Model of Endothelial-Immune Cell Interactions Regulated by Dynamic Wall Shear Stress.
Authors:
Zhang YY; Institute of Cardio-Cerebrovascular Medicine, Central Hospital of Dalian University of Technology, Dalian, Liaoning, People's Republic of China.; School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, Liaoning, People's Republic of China., Wang YT; Institute of Cardio-Cerebrovascular Medicine, Central Hospital of Dalian University of Technology, Dalian, Liaoning, People's Republic of China.; School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, Liaoning, People's Republic of China., Li YJ; Institute of Cardio-Cerebrovascular Medicine, Central Hospital of Dalian University of Technology, Dalian, Liaoning, People's Republic of China.; School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, Liaoning, People's Republic of China., Qiu Y; Institute of Cardio-Cerebrovascular Medicine, Central Hospital of Dalian University of Technology, Dalian, Liaoning, People's Republic of China.; School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, Liaoning, People's Republic of China., Chen D; Institute of Cardio-Cerebrovascular Medicine, Central Hospital of Dalian University of Technology, Dalian, Liaoning, People's Republic of China.; School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, Liaoning, People's Republic of China., Qin KR; Institute of Cardio-Cerebrovascular Medicine, Central Hospital of Dalian University of Technology, Dalian, Liaoning, People's Republic of China.; School of Biomedical Engineering, Faculty of Medicine, Dalian University of Technology, Dalian, Liaoning, People's Republic of China.
Source:
International journal for numerical methods in biomedical engineering [Int J Numer Method Biomed Eng] 2026 Jan; Vol. 42 (1), pp. e70137.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Wiley Country of Publication: England NLM ID: 101530293 Publication Model: Print Cited Medium: Internet ISSN: 2040-7947 (Electronic) Linking ISSN: 20407939 NLM ISO Abbreviation: Int J Numer Method Biomed Eng Subsets: MEDLINE
Imprint Name(s):
Original Publication: [Oxford, UK] : Wiley
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Grant Information:
12372304 National Natural Science Foundation of China
Contributed Indexing:
Keywords: atherosclerosis; endothelial phenotype switching; monocyte cell recruitment; multiscale computational modeling; wall shear stress
Substance Nomenclature:
0 (Chemokine CCL2)
31C4KY9ESH (Nitric Oxide)
Entry Date(s):
Date Created: 20260111 Date Completed: 20260112 Latest Revision: 20260111
Update Code:
20260112
DOI:
10.1002/cnm.70137
PMID:
41521423
Database:
MEDLINE

Weitere Informationen

Atherosclerotic plaque formation alters local vascular geometry, leading to disturbed blood flow patterns. These geometric irregularities produce spatial heterogeneity in wall shear stress (WSS), which plays a critical role in endothelial dysfunction and early immune cell recruitment during atherogenesis. However, the dynamic effect of spatial heterogeneity of wall shear stress on endothelial-immune interactions remains unclear. A multiscale computational model that integrates hemodynamics, endothelial cell phenotype transitions, and immune responses was developed. The model is used to investigate endothelial cell (EC) phenotype transitions and immune cell dynamics under varying damage threshold (D <subscript>NO</subscript> ) conditions. Low-shear stress regions were found to expand with increasing D <subscript>NO</subscript> . Nitric oxide (NO) production was decreased, leading to accelerated EC activation and death. Monocyte Chemoattractant Protein-1 (MCP-1) expression was elevated, and monocyte recruitment and differentiation were enhanced, resulting in a higher proportion of pro-inflammatory M1 macrophages. The model reproduced experimental observations and provided robust predictions under different D <subscript>NO</subscript> scenarios. These results indicate that dynamic WSS drives EC state transitions and regulates immune cell recruitment and differentiation, providing a framework for studying vascular inflammation. Spatially heterogeneous WSS induces local NO depletion, which accelerates EC activation and death in low-shear stress regions, explaining focal endothelial dysfunction. EC injury further increases MCP-1 production, enhances monocyte recruitment, and promotes macrophage polarization toward a pro-inflammatory phenotype, demonstrating the ability of the model to capture flow-dependent vascular immune dynamics and inflammatory lesion development. This work provides mechanistic insight into the interplay between mechanical forces and vascular immune responses and may guide strategies for preventing endothelial injury and promoting anti-inflammatory therapy.
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