Today we have multiple vaccines for multiple diseases, but what if one vaccine could protect you against everything?


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The SARS-CoV-2 virus behind the current COVID-19 pandemic is just one of many different viruses in the coronavirus family. Many of these are circulating in populations of animals like bats and have the potential to “jump” into the human population, just as SARS-CoV-2 did, but even though we now have several vaccines available to deal with COVID-19, with more revolutionary ones in the works, from aerosol based ones to contagious ones, Pamela Björkman and the teams at Caltech and the University of Oxford, are busy developing vaccines that will help protect us against them all, all at once, so we can prevent future pandemics like this one.


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The key point to note there was “all at once,” and how they’re going to do this, by using nanoparticles which are behind novel new innovations such as viral molecular assemblers and edible electronics, is the interesting part. And their work, to create a universal vaccine, would also mean you’re immune to future pandemics before they even emerge. How awesome would that be?!

Led by graduate student Alex Cohen, the Caltech team has designed a protein-based 60-subunit nanoparticle onto which pieces of up to eight different types of coronavirus have been attached. When injected into mice, this vaccine induces the production of antibodies that react to a variety of different coronaviruses – including similar viruses that were not presented on the nanoparticle. The research is described in a paper in the journal Science.


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This vaccine platform, called a Mosaic Nanoparticle, was developed initially by the collaborators at the University of Oxford. The nanoparticle’s shaped like a cage made up of 60 identical proteins, each of which has a small protein tag that functions like a piece of velcro.



Courtesy: Caltech


Cohen and his team took fragments of the spike proteins of different coronaviruses, which play the biggest role in infection, and engineered each to have a protein tag that would bind to those on the cage – the other half of the piece of velcro. When these viral pieces were mixed together with the nanoparticle cage structure each virus tag stuck to a tag on the cage which resulted in a nanoparticle presenting spikes representing different coronavirus strains on its surface.


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Displaying eight different coronavirus spike fragments, known as Receptor Binding Domains or RBDs, then “generated a diverse antibody response,” which gives it a significant advantage over traditional vaccines that only present pieces a single type of virus, and therefore only protect against one. Also, after inoculation the antibodies subsequently produced by mice were able to react to many different strains of coronavirus. Importantly, the antibodies were reactive to related strains of coronavirus that were not present on the nanoparticle.

This suggests that, by presenting the immune system with multiple different coronavirus variants, the immune system learns to recognize common features of coronaviruses and thus could potentially react to a newly emerging coronavirus, not just a SARS-CoV-2 variant, that might cause another pandemic. And not only is that amazing, but it means you could be immune to future pandemics before they even emerge.


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Although the team is still studying the mechanism underlying this phenomenon, the results are promising. The next step is to examine whether immunization prevents viral infection and/or infection symptoms in animals making these antibodies.

“If we can show that the immune response induced by our nanoparticle technology indeed protects against illness resulting from infection, then we hope that we could move this technology forward into human clinical trials, though there are a lot of steps that need to happen between now and then,” says Cohen. “We don’t envision that this methodology would replace any existing vaccines, but it’s good to have many tools on hand when facing future emerging viral threats.”


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“Unfortunately SARS-CoV-2 is unlikely to be the last coronavirus to cause a pandemic,” says Björkman. “Alex’s results show that it is possible to raise diverse neutralising antibody responses, even against coronavirus strains that were not represented on the injected nanoparticle. So, we are hopeful that this technology could be used to protect against future animal coronaviruses that cross into humans. In addition, the nanoparticles elicit neutralising responses against SARS-CoV-2, so it could be possible to use them now to protect against COVID-19 as well as other coronaviruses with pandemic potential.”

About author

Matthew Griffin

Matthew Griffin, described as “The Adviser behind the Advisers” and a “Young Kurzweil,” is the founder and CEO of the World Futures Forum and the 311 Institute, a global Futures and Deep Futures consultancy working between the dates of 2020 to 2070, and is an award winning futurist, and author of “Codex of the Future” series. Regularly featured in the global media, including AP, BBC, Bloomberg, CNBC, Discovery, RT, Viacom, and WIRED, Matthew’s ability to identify, track, and explain the impacts of hundreds of revolutionary emerging technologies on global culture, industry and society, is unparalleled. Recognised for the past six years as one of the world’s foremost futurists, innovation and strategy experts Matthew is an international speaker who helps governments, investors, multi-nationals and regulators around the world envision, build and lead an inclusive, sustainable future. A rare talent Matthew’s recent work includes mentoring Lunar XPrize teams, re-envisioning global education and training with the G20, and helping the world’s largest organisations envision and ideate the future of their products and services, industries, and countries. Matthew's clients include three Prime Ministers and several governments, including the G7, Accenture, Aon, Bain & Co, BCG, Credit Suisse, Dell EMC, Dentons, Deloitte, E&Y, GEMS, Huawei, JPMorgan Chase, KPMG, Lego, McKinsey, PWC, Qualcomm, SAP, Samsung, Sopra Steria, T-Mobile, and many more.

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