Interleukin-36γ aggravates macrophage foam cell formation and atherosclerosis progression in ApoE knockout mice

Area of Science:

• Cardiovascular Science
• Immunology
• Molecular Biology

Background:

• Atherosclerosis is a leading global cause of mortality.
• Macrophage foam cell formation is a critical early step in atherogenesis.
• The precise molecular mechanisms driving foam cell formation require further elucidation.

Purpose of the Study:

• To investigate the role of Interleukin-36 gamma (IL-36γ) in atherosclerosis pathogenesis.
• To explore how IL-36γ influences macrophage inflammatory and metabolic processes.

Main Methods:

• Studied the effects of IL-36γ on macrophage inflammatory responses and lipoprotein metabolism.
• Investigated IL-36γ's impact on oxidized low-density lipoprotein uptake and foam cell formation.
• Examined the molecular pathways, including the phosphoinositide 3-kinase pathway and CD36 expression, regulated by IL-36γ in macrophages.

Main Results:

• IL-36γ was found to regulate inflammatory responses and lipoprotein metabolism in macrophages.
• IL-36γ promotes atherosclerosis by enhancing macrophage foam cell formation.
• IL-36γ upregulates scavenger receptor CD36 expression via the phosphoinositide 3-kinase pathway in macrophages.

Conclusions:

• IL-36γ is a novel regulator of macrophage foam cell formation.
• IL-36γ plays a significant role in the progression of atherosclerosis.
• Targeting IL-36γ pathways may offer therapeutic strategies for atherosclerosis.