Osteopontin promotes inflammation in patients with acute coronary syndrome through its activity on IL-17 producing cells
Related Experiment Video
Updated: May 21, 2026

A Model for Encephalomyosynangiosis Treatment after Middle Cerebral Artery Occlusion-Induced Stroke in Mice
Published on: June 22, 2022
Yingxia Zheng1, Zhihao Wang, Lin Deng
1Department of Clinical Laboratory, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Abstract:
Atherosclerosis is a progressive disease with a strong inflammatory component. Here we confirm the existence of a critical imbalance in the ratio of Th17 to Treg-cell populations in peripheral CD4(+) T cells from patients with acute coronary syndrome (ACS), which favors inflammation. This was concurrent with increased IL-17 production from the CD4(+) CD45RA(-) FOXP3(lo) Treg-cell subset, and elevated osteopontin (OPN) levels in serum from ACS patients. We demonstrate a direct effect of OPN in serum from ACS patients on increased IL-17 production by CD4(+) CD45RA(-) FOXP3(lo) T cells, mediated through recruitment of the OPN receptors CD29 and CD44, and dependent on STAT3 and the nuclear hormone receptor retinoic-acid-related orphan receptor-γt (RORγt) pathway, but not IL-6 production. To our knowledge and beyond the disease context of ACS, this study constitutes the first demonstration of a critical role for OPN in the positive regulation of inflammation through increased IL-17 production by CD4(+) CD45RA(-) FOXP3(lo) cells.
Related Concept Videos
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Acute Inflammation I: Inflammatory Response
Inflammatory Response
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammatory Response I: Vascular and Cellular
Acute Inflammation III: Local and Systemic Effects
Inflammatory Response II: Inflammatory Exudate and Tissue Repair
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the exudate's...