Richard Feynman famously stated, “Everything that living things do can be understood in terms of the jigglings and wigglings of atoms.” This week, Nature Nanotechnology features a study that sheds new light on the evolution of the coronavirus and its variants of concern by analyzing the behavior of atoms in the proteins at the interface between the virus and humans.
The study introduces significant insights into the mechanical stability of the coronavirus, a key factor in its evolution into a global pandemic. The research team employed advanced computational simulations and magnetic tweezers technology to explore the biomechanical properties of biochemical bonds in the virus. Their findings reveal critical distinctions in the mechanical stability of various virus strains, highlighting how these differences contribute to the virus’s aggressiveness and spread.
As the World Health Organization reports nearly 7 million deaths worldwide from COVID-19, with more than 1 million in the United States alone, understanding these mechanics becomes crucial for developing effective interventions and treatments. The group emphasizes that comprehending the molecular intricacies of this pandemic is key to shaping our response to future viral outbreaks.
Delving deeper into the study, the Auburn University team, led by Prof. Rafael C. Bernardi, Assistant Professor of Biophysics, along with Dr. Marcelo Melo and Dr. Priscila Gomes, played a pivotal role in the research by leveraging powerful computational analysis. Utilizing NVIDIA HGX-A100 nodes for GPU computing, their work was essential in unraveling complex aspects of the virus’s behavior.
Prof. Bernardi, an NSF Career Award recipient, collaborated closely with Prof. Gaub from LMU, Germany, and Prof. Lipfert from Utrecht University, The Netherlands. Their collective expertise spanned various fields, culminating in a comprehensive understanding of the SARS-CoV-2 virulence factor. Their research demonstrates that the equilibrium binding affinity and mechanical stability of the virus–human interface are not always correlated, a finding crucial for comprehending the dynamics of viral spread and evolution.
Additionally, the team’s use of magnetic tweezers to study the force-stability and bond kinetics of the SARS-CoV-2:ACE2 interface in various virus strains provides new perspectives on predicting mutations and adjusting therapeutic strategies. The methodology is unique because it measures how strongly the virus binds to the ACE2 receptor, a key entry point into human cells, under conditions that mimic the human respiratory tract.
The group found that while all the major COVID-19 variants (like alpha, beta, gamma, delta, and omicron) bind more strongly to human cells than the original virus, the alpha variant is particularly stable in its binding. This might explain why it spread so quickly in populations without prior immunity to COVID-19. The results also suggest that other variants, like beta and gamma, evolved in a way that helps them evade some immune responses, which might give them an advantage in areas where people have some immunity, either from previous infections or vaccinations.
Interestingly, the delta and omicron variants, which became dominant worldwide, show traits that help them escape immune defenses and possibly spread more easily. However, they don’t necessarily bind more strongly than other variants. Prof. Bernardi says, “This research is important because it helps us understand why some COVID-19 variants spread more quickly than others. By studying the virus‘s binding mechanism, we can predict which variants might become more prevalent and prepare better responses to them.”
This research emphasizes the importance of biomechanics in understanding viral pathogenesis and opens new avenues for scientific investigation into viral evolution and therapeutic development. It stands as a testament to the collaborative nature of scientific research in addressing significant health challenges.
More information: Magnus S. Bauer et al, Single-molecule force stability of the SARS-CoV-2–ACE2 interface in variants-of-concern, Nature Nanotechnology (2023). DOI: 10.1038/s41565-023-01536-7. www.nature.com/articles/s41565-023-01536-7
Journal information: Nature Nanotechnology
News
UCLA Scientists Uncover a “Hidden Weakness” in Some of the World’s Deadliest Cancers
A new study has uncovered an unexpected vulnerability in some of the deadliest cancers. Researchers at UCLA have identified a previously hidden weakness in some of the most aggressive cancers, pointing to a possible new way [...]
AI-designed universal coronavirus vaccine clears first human trial
Key Takeaways Super-Antigen Technology: Uses AI and machine learning to analyze viral genomes, creating a single vaccine that targets essential features across entire virus families, including coronaviruses and Ebola. Human Trials & Safety: Phase [...]
Researchers Discover a Hidden Vitamin D Problem That Persists Year-Round
A new study suggests that some groups may not experience the expected seasonal boost in vitamin D levels, even during the sunniest months of the year. Many people assume that spending more time outdoors [...]
Researchers Solve the Mystery Behind a Billion-Dollar Dental Implant Disease
Researchers have uncovered why a common and costly dental implant infection often resists antibiotics. Dental implants have helped tens of millions of people regain a full set of stable, functional teeth, something traditional dentures [...]
Nanoparticles inspired by lung fluid improve therapies targeting respiratory system
The CIC biomaGUNE Center for Cooperative Research in Biomaterials has developed pulmonary surfactant nanoparticles (the blend of lipids and proteins that line the alveoli and enables breathing), which are encapsulated [...]
Scientists Finally Uncover How a “Forever Chemical” Causes Birth Defects
PFDA, a PFAS “forever chemical,” can cause craniofacial birth defects by disrupting retinoic acid regulation during fetal development, revealing the first clear molecular mechanism behind the link. Researchers have long linked perfluoroalkyl and polyfluoroalkyl substances (PFAS), [...]
Scientists Have Discovered These Deadly Parasites Are Secretly Swapping DNA
Leishmania parasites appear to evolve through widespread genetic exchange, reshaping assumptions about how they adapt and spread. A parasite long thought to spread mostly by cloning itself may be far more genetically dynamic than [...]
Stanford’s Revolutionary New Microscope Reveals Living Cells in Stunning Detail
Stanford researchers have developed a microscope that can show how nanostructures interact inside living cells at the highest resolution achieved so far. The view into living cells just got better. Stanford researchers have merged [...]
What Bundibugyo Ebola vaccines and treatments are under development
By Mariam Sunny and Jennifer Rigby May 29 (Reuters) – Global health authorities are racing to identify medical options to help contain an Ebola outbreak in eastern Democratic Republic of Congo, linked to the [...]
Why More People in Their 30s Are Suddenly Getting Colon Cancer
A major Swiss study found that colorectal cancer is becoming increasingly common in adults under 50, even as rates decline in older age groups. Researchers in Switzerland have identified a concerning trend: while colorectal [...]
Researchers Compare MS Models to Human Tissue in Search for Better Therapies
Researchers identified key differences between two widely used multiple sclerosis models, showing how each can better study myelin damage, immune responses, and repair. The findings may improve efforts to develop treatments that restore lost [...]
Scientists Discover Genetic “Off Switch” That Supercharges CAR T Cells Against Cancer
A new study reveals a possible way to make CAR T-cell therapy more durable and effective by targeting a single gene-regulating protein. CAR T-cell therapy is widely seen as a breakthrough in personalized cancer [...]
New Vitamin B12-Based Therapy Could Change How Brain Cancer Is Treated
Researchers have identified a vitamin B12–based compound that appears capable of crossing the blood–brain barrier and selectively accumulating in glioblastoma tissue. For decades, one of the biggest problems in brain cancer treatment has had [...]
Simple Fiber Supplement Cuts Knee Arthritis Pain in Just 6 Weeks, Study Finds
A daily inulin supplement may help reduce knee osteoarthritis pain while revealing a possible link between gut health, muscle function, and pain sensitivity. For millions of people living with knee osteoarthritis, managing chronic pain [...]
This Common Vitamin May Help Stop Prediabetes From Turning Into Diabetes
Vitamin D may help prevent type 2 diabetes in people with specific genetic variations, offering a possible path toward personalized diabetes prevention. More than 40% of U.S. adults have prediabetes, a condition in which [...]
Ebola, hantavirus: Is the world prepared for the next pandemic?
Funding cuts to health research and a growing antivaccine movement are making it harder than ever to respond to viruses. The World Health Organization (WHO) has declared that an Ebola outbreak in Uganda and [...]
