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Updated: Jun 5, 2026
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Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy
Published on: October 19, 2016
Vascular Immune Remodeling: A CD4+ T Cell-Driven Immune Trajectory Associated With Arterial Stiffness
Yu Miao1, Bangwei Chen2,3, Changqing Zeng1
1Institute of Biomedical Research, Henan Academy of Sciences, Zhengzhou, China.
Aging Cell
|June 4, 2026
Summary
Arterial stiffness is linked to immune changes, but not classical aging. A new study reveals distinct CD4+ T cell remodeling, termed "vascular immune remodeling," associated with arterial stiffness and potentially useful for risk assessment.
Area of Science:
- Immunology
- Cardiovascular Science
- Aging Research
Background:
- Arterial stiffness, a marker of vascular aging and cardiovascular disease risk, is influenced by immune aging.
- Classical immune aging (immunosenescence) involves reduced T cell receptor (TCR) diversity and CD8+ memory expansion.
- Emerging evidence suggests peripheral immune dysregulation may impact vascular function independently of immunosenescence.
Purpose of the Study:
- To investigate the association between peripheral T cell receptor (TCR) repertoires and arterial stiffness (measured by pulse wave velocity, PWV).
- To identify distinct immune profiles related to subclinical vascular aging.
- To explore potential immune-based biomarkers for cardiovascular risk stratification.
Main Methods:
- Profiling of peripheral TCRβ repertoires in 563 adults without overt cardiovascular disease.
- Assessment of pulse wave velocity (PWV) as a measure of arterial stiffness.
- Single-cell transcriptomic analysis and machine learning modeling to analyze T cell populations and predict high PWV.
Main Results:
- Individuals with elevated PWV showed a paradoxical increase in TCR diversity, driven by CD4+ T cell remodeling.
- PWV-associated CD4+ T cells exhibited signs of chronic activation, proliferative restraint, and dysfunction.
- A machine learning model utilizing these TCR repertoire features accurately identified individuals with high PWV (AUC=0.817).
Conclusions:
- A distinct CD4+ T cell-driven immune remodeling process, termed "vascular immune remodeling," is associated with arterial stiffness.
- This process is dissociable from classical immunosenescence and may contribute to vascular aging.
- Vascular immune remodeling offers potential for subclinical vascular risk stratification and novel immune-based interventions.
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