Scientists at Scripps Research Institute have unveiled a groundbreaking discovery that could potentially save thousands of lives across Africa, Asia, and Australia.
They have developed an antibody capable of neutralizing the lethal toxins found in a wide variety of snake venoms. This universal antivenom is not just a scientific breakthrough but also a beacon of hope for regions where snake bites are a common and often deadly occurrence.
Bridging Continents with a Universal Solution(Photo : TIM ARO/TT News Agency/AFP via Getty Images)
Snake bites are a major public health problem in many parts of the world, especially in rural and low-resource settings.
According to the World Health Organization, about 5.4 million people are bitten by snakes each year, resulting in 1.8 to 2.7 million cases of envenoming and 81,000 to 138,000 deaths.
Moreover, snake bites can cause permanent disability, psychological trauma, and economic hardship for the survivors and their families.
The current treatment for snake bites is based on the use of antivenoms, which are derived from the plasma of animals immunized with specific snake venoms. However, these antivenoms have several limitations, such as:
They are expensive and require refrigeration, making them inaccessible and unaffordable for many people in need.
They are often ineffective or have adverse effects due to cross-reactivity or contamination.
They are specific to certain snake species or geographic regions, requiring accurate identification of the snake before administration.
These challenges have motivated researchers to look for alternative solutions that could overcome the drawbacks of conventional antivenoms.
One of the most promising approaches is the development of a universal antivenom that would be effective against a broad range of snake venoms, regardless of the snake species or location.
The development of a universal antivenom has been a long-standing goal for the scientific community, but it has proven to be a difficult task due to the complexity and diversity of snake venoms.
Snake venoms are composed of various proteins and peptides that have different functions and targets in the human body, such as affecting the nervous system, the blood coagulation, or the tissue damage.
To tackle this challenge, scientists at Scripps Research Institute have adopted a novel strategy that involves screening billions of different human antibodies to identify one that could block the toxins' activity effectively.
Antibodies are molecules produced by the immune system that can recognize and bind to foreign substances, such as viruses or bacteria, and neutralize them.
The researchers discovered an antibody that showed efficacy in protecting mice from the deadly venom of snakes including black mambas and king cobras.
This discovery is documented in Science Translational Medicine, marking it as one of the most significant findings in the field.
The antibody, named S2G7, works by binding to a common site on the toxins that is responsible for disrupting the communication between nerve cells and muscles, leading to paralysis and respiratory failure.
By blocking this site, the antibody prevents the toxins from exerting their harmful effects, thus saving the mice from death.
The researchers also tested the antibody against other snake venoms, such as those from cobras, kraits, and coral snakes, and found that it was able to neutralize them as well.
This indicates that the antibody has a broad spectrum of activity and could potentially be used as a universal antivenom for many snake species.
This innovation promises not only to reduce fatalities but also to transform how communities, particularly in rural and underserved areas, respond to snake bites.
With this universal antivenom, healthcare providers can administer treatment without first identifying the snake species, making timely intervention more feasible.
Moreover, the antibody is expected to be cheaper, safer, and more stable than conventional antivenoms, making it more accessible and affordable for the people who need it most.
The researchers hope that their discovery will pave the way for further development and clinical trials of the universal antivenom, as well as inspire more research on other venomous animals, such as scorpions, spiders, and jellyfish.
They believe that their approach could lead to a new era of antivenom therapy that would benefit millions of people around the world.
