Inflammation of the arteries is a primary precursor and driver of cardiovascular disease—the No. 1 killer of people in the United States. This inflammation is associated with the buildup of dangerous plaque inside the arteries. Advanced treatments are needed to target this inflammation in patients. Michigan State University researchers have tested a new nanoparticle nanotherapy infusion that precisely targets inflammation and activates the immune system to help clear out arterial plaque.
“There are two different things that people seem to be scared of when it comes to plaques,” said Bryan Smith, an associate professor with the Department of Biomedical Engineering in the College of Engineering and MSU’s Institute for Quantitative Health Science and Engineering. “Many people don’t really understand the difference between them.”
The first example is when your artery becomes blocked (for example, a 95% to 99% blockage). Often, there are symptoms like pain or pressure in the chest or nausea and dizziness beforehand and doctors will put a stent in the artery to increase blood flow. The second is when the plaque is highly inflammatory. This can make the plaque vulnerable to rupture, which can lead to artery blockages elsewhere in the body.
“That’s the scarier one that leads to most heart attacks,” said Smith. “Because such plaques don’t necessarily block much of the artery, and because the effects of the rupture can very suddenly completely block blood flow, such a heart attack can seem to appear as if from nowhere.”
Smith and his team, including co-first authors postdoctoral fellows Yapei Zhang and Manisha Kumari, created nanoparticles—materials that are thinner than a human hair—that they used to develop a nanotherapy infusion. The nanotherapy selectively targets a specific immune cell type that moves into and is a part of the plaque. These treated cells “eat” away parts of the plaque core, removing it from the artery wall and decreasing levels of blood vessel inflammation.
Previous studies by Smith and his collaborators, the Leeper Lab at Stanford University, tested the infusion on mice and now, pig models, to prove the infusion’s effectiveness, and critically, its lack of side effects due to its precision immune targeting.
“Using PET [positron-emission tomography] scans, we were able to measure the effects of the therapy on pig arteries,” said Smith. “We showed in animal models such as pigs that we can decrease the levels of inflammation in the plaque based not only on this clinically used PET imaging technique but also by molecular assays. Just as importantly, we saw none of the side effects that would have been anticipated had the therapy not been precisely targeted.”
Earlier studies in mice required hundreds of microliters of the nanotherapy infusion, but most recently, Smith and his team have achieved a measurable impact in pigs by scaling up the amount produced to liters. These volumes are in the range needed for human use. This study represents a critical step toward translation to patient clinical trials of safer, more effective cardiovascular therapies.
More information: Sharika Bamezai et al, Pro-efferocytic nanotherapies reduce vascular inflammation without inducing anemia in a large animal model of atherosclerosis, Nature Communications (2024). DOI: 10.1038/s41467-024-52005-1
Journal information: Nature Communications
News
Urban Microbes Are Eating Disinfectants – Are We Fueling a New Health Threat?
New research reveals that microbes in urban environments are evolving to withstand the very cleaning agents designed to eliminate them. The study also uncovers new strains in Hong Kong, previously only found in the [...]
Startling Study Shows High-Potency Cannabis Alters DNA
The study shows that frequent use of high-potency cannabis alters DNA, affecting genes related to energy and immune function. These changes differ between those with and without psychosis, suggesting cannabis use could influence mental health through biological [...]
New nanotherapy targets artery inflammation in cardiovascular disease
Inflammation of the arteries is a primary precursor and driver of cardiovascular disease—the No. 1 killer of people in the United States. This inflammation is associated with the buildup of dangerous plaque inside the [...]
Revolutionary Nanoparticle Therapy for Prostate Cancer
A groundbreaking research effort involving teams from the University of Virginia, Mount Sinai, the University of Michigan, the University of Texas, and others has displayed the clinical efficacy of an innovative therapy that utilizes nanoparticles and [...]
Antibody engineering drives innovation in drug development
Monoclonal antibodies (mAbs) are used to prevent, detect, and treat a broad spectrum of non-communicable and communicable diseases. Over the past few years, the market for mAbs has grown exponentially with an expected compound [...]
Breakthrough Study Reveals How Bladder Cancer Starts and Spreads
Researchers found that DNA mutations from antiviral enzymes and chemotherapy fuel early bladder cancer, while abnormal circular DNA in tumor cells drives resistance to therapy. These discoveries open new therapeutic avenues. A groundbreaking study led by [...]
AI and Quantum Mechanics Accelerate Drug Discovery
A recent article published in the Journal of Chemical Information and Modeling researchers at Southern Methodist University (SMU) have developed SmartCADD, an open-source virtual tool designed to speed [...]
Targeting ‘undruggable’ diseases: Researchers reveal new levels of detail in targeted protein degradation
Researchers at the University of Dundee have revealed in the greatest detail yet the workings of molecules called protein degraders which can be deployed to combat what have previously been regarded as "undruggable" diseases, [...]
Revolutionizing Virology: AI Discovers Over 160,000 New RNA Viruses
Largest discovery of new virus species sheds light on the hidden virosphere. Artificial intelligence (AI) has been used to reveal details of a diverse and fundamental branch of life living right under our feet and in every [...]
Cardiac Crisis: COVID-19 Doubles Risk of Heart Attacks, Strokes, and Death
Research indicates that COVID-19 survivors face doubled risks of severe cardiac events for years after recovery, especially if hospitalized. People with A, B, or AB blood types are particularly vulnerable, highlighting the need for personalized approaches [...]
AI steps into science limelight with Nobel wins
For long periods of its history, artificial intelligence has lurked in the hinterland of science, often unloved and unfunded—but two Nobel prizes in one week suggest its time in the sunshine has finally arrived. [...]
MIT Scientists Shed New Light on the Critical Brain Connections That Define Consciousness
A new study provides further evidence that consciousness depends on communication between the brain’s sensory and cognitive regions in the cortex. Our brains are constantly making predictions about our surroundings, enabling us to focus [...]
Common Chemicals Found in Shampoo and Plastic Could Be Quietly Disrupting Your Heart’s Rhythm
UC study of Fernald data links environmental phenols to heart toxicities Environmental phenols are present in numerous everyday consumer products, serving as preservatives in packaged foods, parabens in shampoos, and bisphenol A (BPA) in [...]
Revolutionary Brain Tech Offers New Hope for Stroke and Injury Recovery
University of Pittsburgh researchers report that deep brain stimulation (DBS) can effectively enhance motor functions in individuals with arm and hand paralysis due to brain injuries, with promising results from early human and monkey [...]
NIH Scientists Discover Gene Responsible for Rare Eye Disease
Findings supported by the NIH pave the way for the development of genetic testing, clinical trials, and therapies. Researchers at the National Institutes of Health (NIH) and their collaborators have discovered a gene linked to certain [...]
Alzheimer’s Breakthrough: Synthetic THC Pill Proves Effective in Clinical Trial
Patients tolerated synthetic THC (dronabinol) well, without the adverse effects commonly associated with existing Alzheimer’s agitation medications. A study conducted by researchers from Johns Hopkins University School of Medicine and Tufts University School of Medicine found that a pill form [...]