Targeted anti-IL-1β platelet microparticles for cardiac detoxing and repair.

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An acute myocardial infarction (AMI) induces a sterile inflammatory response that facilitates further heart injury and promotes adverse cardiac remodeling. Interleukin-1β (IL-1β) plays a central role in the sterile inflammatory response that results from AMI. Thus, IL-1β blockage is a promising strategy for treatment of AMI. However, conventional IL-1β blockers lack targeting specificity. This increases the risk of serious side effects. To address this problem herein, we fabricated platelet microparticles (PMs) armed with anti-IL-1β antibodies to neutralize IL-1β after AMI and to prevent adverse cardiac remodeling. Our results indicate that the infarct-targeting PMs could bind to the injured heart, increasing the number of anti-IL-1β antibodies therein. The anti-IL-1β platelet PMs (IL1-PMs) protect the cardiomyocytes from apoptosis by neutralizing IL-1β and decreasing IL-1β-driven caspase-3 activity. Our findings indicate that IL1-PM is a promising cardiac detoxification agent that removes cytotoxic IL-1β during AMI and induces therapeutic cardiac repair.





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Li, Zhenhua, Shiqi Hu, Ke Huang, Teng Su, Jhon Cores and Ke Cheng (2020). Targeted anti-IL-1β platelet microparticles for cardiac detoxing and repair. Science advances, 6(6). p. eaay0589. 10.1126/sciadv.aay0589 Retrieved from

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Teng Su

Assistant Professor in Medicine

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