Mononuclear cell therapy attenuates atherosclerosis in apoE KO mice

Area of Science:

• Cardiovascular Research
• Regenerative Medicine
• Immunology

Background:

• Atherosclerosis is a chronic inflammatory disease characterized by lipid deposition and plaque formation in arteries.
• Cell therapy is emerging as a potential treatment strategy for cardiovascular diseases.
• The apolipoprotein E knockout (apoE KO) mouse model is widely used to study atherosclerosis.

Purpose of the Study:

• To evaluate the therapeutic effects of mononuclear cell (MNC) therapy on the development of atherosclerotic lesions in apoE KO mice.
• To investigate the impact of MNC therapy on vascular lipid deposition, remodeling, oxidative stress, and endothelial nitric oxide synthase (eNOS) expression.

Main Methods:

• ApoE KO mice were treated with spleen MNCs for 8 weeks.
• Vascular lipid deposition and remodeling were assessed via histological analysis and morphometry.
• Oxidative stress markers and eNOS expression were quantified.
• Immunohistochemistry was used to detect the homing of endothelial progenitor cells (EPCs).

Main Results:

• MNC therapy significantly reduced lipid deposition in the aortas of apoE KO mice.
• MNC treatment prevented outward vascular remodeling compared to untreated controls.
• Treated mice exhibited reduced superoxide anion production and increased eNOS expression.
• Evidence of EPC homing in the aortas of MNC-treated mice was observed.

Conclusions:

• MNC therapy effectively attenuates atherosclerosis progression in the apoE KO mouse model.
• The therapeutic mechanism involves EPC homing, reduced oxidative stress, and enhanced eNOS expression.
• These findings support MNC therapy as a promising strategy for treating atherosclerosis.