Don Wood – MessageToEagle.com – Scientists have created a “Trojan Horse” nanoparticle that reduces the risk of heart attacks.
The discovery could be a potential treatment for atherosclerosis, a leading cause of death in the United States.
Scientists from Michigan State University say their invented nanoparticle eats away – from the inside out portions of plaques that cause heart attacks.
According to Bryan Smith, associate professor of biomedical engineering at MSU, the nanoparticle that can be directed to eat debris, reducing and stabilizing plaque.
The results, published in the current issue of Nature Nanotechnology, showcases the nanoparticle that homes in on atherosclerotic plaque due to its high selectivity to a particular immune cell type — monocytes and macrophages.
Once inside the macrophages in those plaques, it delivers a drug agent that stimulates the cell to engulf and eat cellular debris. Basically, it removes the diseased/dead cells in the plaque core. By reinvigorating the macrophages, plaque size is reduced and stabilized.
Smith said that future clinical trials on the nanoparticle are expected to reduce the risk of most types of heart attacks, with minimal side effects due to the unprecedented selectivity of the nanodrug.
Smith’s studies focus on intercepting the signaling of the receptors in the macrophages and sending a message via small molecules using nano-immunotherapeutic platforms. Previous studies have acted on the surface of the cells, but this new approach works intracellularly and has been effective in stimulating macrophages.
“We found we could stimulate the macrophages to selectively eat dead and dying cells — these inflammatory cells are precursor cells to atherosclerosis — that are part of the cause of heart attacks,” Smith said. “We could deliver a small molecule inside the macrophages to tell them to begin eating again.”
This approach also has applications beyond atherosclerosis, he added.
“We were able to marry a groundbreaking finding in atherosclerosis by our collaborators with the state-of-the-art selectivity and delivery capabilities of our advanced nanomaterial platform. We demonstrated the nanomaterials were able to selectively seek out and deliver a message to the very cells needed,” Smith said.
Written by Don Wood – MessageToEagle.com Staff