mRNA vaccine – Artifex.News https://artifexnews.net Stay Connected. Stay Informed. Fri, 06 Oct 2023 12:25:08 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.1 https://artifexnews.net/wp-content/uploads/2023/08/cropped-Artifex-Round-32x32.png mRNA vaccine – Artifex.News https://artifexnews.net 32 32 mRNA research exemplifies the unpredictable value of basic research https://artifexnews.net/article67388657-ece/ Fri, 06 Oct 2023 12:25:08 +0000 https://artifexnews.net/article67388657-ece/ Read More “mRNA research exemplifies the unpredictable value of basic research” »

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Pharmacist Lena Springmann prepares a Covid-19 vaccination with Pfizer/Biontech vaccine at a vaccination center in Halle, Germany, Monday, Jan. 11, 2021. The Nobel Prize in Medicine has been awarded to two scientists whose work led to mRNA vaccines against COVID-19.
| Photo Credit: AP

The 2023 Nobel Prize in physiology or medicine will go to Katalin Karikó and Drew Weissman for their discovery that modifying mRNA – a form of genetic material your body uses to produce proteins – could reduce unwanted inflammatory responses and allow it to be delivered into cells. While the impact of their findings may not have been apparent at the time of their breakthrough over a decade ago, their work paved the way for the development of the Pfizer-BioNTech and Moderna COVID-19 vaccines, as well as many other therapeutic applications currently in development. The 2023 Nobel Prize in physics likewise will go to a team of scientists who used lasers to clarify the behaviour of electrons, and many prior Nobels have honored basic research.

We asked André O. Hudson, a biochemist and microbiologist at the Rochester Institute of Technology, to explain how basic research like that of this year’s Nobel Prize winners provides the foundations for science – even when its far-reaching effects won’t be felt until years later.

What is basic science?

Basic research, sometimes called fundamental research, is a type of investigation with the overarching goal of understanding natural phenomena like how cells work or how birds can fly. Scientists are asking the fundamental questions of how, why, when, where and if in order to bridge a gap in curiosity and understanding about the natural world.

Researchers sometimes conduct basic research with the hope of eventually developing a technology or drug based on that work. But what many scientists typically do in academia is ask fundamental questions with answers that may or may not ever lead to practical applications.

Humans, and the animal kingdom as a whole, are wired to be curious. Basic research scratches that itch.

What are some basic science discoveries that went on to have a big influence on medicine?


The 2023 Nobel Prize in physiology or medicine acknowledges basic science work done in the early 2000s. Karikó and Weissman’s discovery about modifying mRNA to reduce the body’s inflammatory response to it allowed other researchers to leverage it to make improved vaccines.

Another example is the discovery of antibiotics, which was based on an unexpected observation. In the late 1920s, the microbiologist Alexander Fleming was growing a species of bacteria in his lab and found that his Petri dish was accidentally contaminated with the fungus Penicillium notatum. He noticed that wherever the fungus was growing, it impeded or inhibited the growth of the bacteria. He wondered why that was happening and subsequently went on to isolate penicillin, which was approved for medical use in the early 1940s.

This work fed into more questions that ushered in the age of antibiotics. The 1952 Nobel Prize in physiology or medicine was awarded to Selman Waksman for his discovery of streptomycin, the first antibiotic to treat tuberculosis.

Basic research often involves seeing something surprising, wanting to understand why and deciding to investigate further. Early discoveries start from a basic observation, asking the simple question of “How?” Only later are they parlayed into a medical technology that helps humanity.

Why does it take so long to get from curiosity-driven basic science to a new product or technology?


The mRNA modification discovery could be considered to be on a relatively fast track from basic science to application. Less than 15 years passed between Karikó and Weissman’s findings and the COVID-19 vaccines. The importance of their discovery came to the forefront with the pandemic and the millions of lives they saved.

Most basic research won’t reach the market until several decades after its initial publication in a science journal. One reason is because it depends on need. For example, orphan diseases that affect only a small number of people will get less attention and funding than conditions that are ubiquitous in a population, like cancer or diabetes. Companies don’t want to spend billions of dollars developing a drug that will only have a small return on their investment. Likewise, because the return on investment for basic research often isn’t clear, it can be a hard sell to support financially.

Another reason is cultural. Scientists are trained to chase after funding and support for their work wherever they can find it. But sometimes that’s not as easy as it seems.

A good example of this was when the human genome was first sequenced in the early 2000s. A lot of people thought that having access to the full sequence would lead to treatments and cures for many different diseases. But that has not been the case, because there are many nuances to translating basic research to the clinic. What works in a cell or an animal might not translate into people. There are many steps and layers in the process to get there.

Why is basic science important?


For me, the most critical reason is that basic research is how we train and mentor future scientists.

In an academic setting, telling students “Let’s go develop an mRNA vaccine” versus “How does mRNA work in the body” influences how they approach science. How do they design experiments? Do they start the study going forward or backward? Are they argumentative or cautious in how they present their findings?

Almost every scientist is trained under a basic research umbrella of how to ask questions and go through the scientific method. You need to understand how, when and where mRNAs are modified before you can even begin to develop an mRNA vaccine. I believe the best way to inspire future scientists is to encourage them to expand on their curiosity in order to make a difference.

When I was writing my dissertation, I was relying on studies that were published in the late 1800s and early 1900s. Many of these studies are still cited in scientific articles today. When researchers share their work, though it may not be today or tomorrow, or 10 to 20 years from now, it will be of use to someone else in the future. You’ll make a future scientist’s job a little bit easier, and I believe that’s a great legacy to have.

What is a common misconception about basic science?


Because any immediate use for basic science can be very hard to see, it’s easy to think this kind of research is a waste of money or time. Why are scientists breeding mosquitoes in these labs? Or why are researchers studying migratory birds? The same argument has been made with astronomy. Why are we spending billions of dollars putting things into space? Why are we looking to the edge of the universe and studying stars when they are millions and billions of light years away? How does it affect us?

There is a need for more scientific literacy because not having it can make it difficult to understand why basic research is necessary to future breakthroughs that will have a major effect on society.

In the short term, the worth of basic research can be hard to see. But in the long term, history has shown that a lot of what we take for granted now, such as common medical equipment like X-rayslasers and MRIs, came from basic things people discovered in the lab.

And it still goes down to the fundamental questions – we’re a species that seeks answers to things we don’t know. As long as curiosity is a part of humanity, we’re always going to be seeking answers.

The Conversation

André O. Hudson, Dean of the College of Science, Professor of Biochemistry, Rochester Institute of Technology

This article is republished from The Conversation under a Creative Commons license. Read the original article.



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Katalin Kariko, scientific maverick who paved way for mRNA vaccines https://artifexnews.net/article67372179-ece/ Mon, 02 Oct 2023 11:46:05 +0000 https://artifexnews.net/article67372179-ece/ Read More “Katalin Kariko, scientific maverick who paved way for mRNA vaccines” »

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Hungarian biochemist Katalin Kariko poses for a photo in Budapest, Hungary, May 27, 2021. Two scientists have won the Nobel Prize in medicine on Monday, Oct. 2, 2023 for discoveries that enabled the development of mRNA vaccines against COVID-19. The award was given to Katalin Karikó and Drew Weissman. Karikó is a professor at Sagan’s University in Hungary and an adjunct professor at the University of Pennsylvania.
| Photo Credit: AP

Hungarian-born scientist Katalin Kariko’s obsession with researching a substance called mRNA to fight disease once cost her a faculty position at a prestigious US university, which dismissed the idea as a dead end.

Now, her pioneering work — which paved the way for the Pfizer/BioNTech and Moderna Covid-19 vaccines — has won her the Nobel Prize in Medicine.

Kariko, 68, spent much of the 1990s writing grant applications to fund her research into “messenger ribonucleic acid” — genetic molecules that tell cells what proteins to make, essential to keeping our bodies alive and healthy.

She believed mRNA held the key to treating diseases where having more of the right kind of protein can help — like repairing the brain after a stroke.

But the University of Pennsylvania, where Kariko was on track for a professorship, decided to pull the plug after the grant rejections piled up.

Also Read | India-made mRNA vaccine priced at ₹2,292, will be available as a booster dose

“I was up for promotion, and then they just demoted me and expected that I would walk out the door,” she told AFP in an interview from her home in Philadelphia in December 2020.

Kariko didn’t yet have a green card and needed a job to renew her visa. She also knew she wouldn’t be able to put her daughter through college without the hefty staff discount.

She decided to persist as a lower-rung researcher, scraping by on a meagre salary.

It was a low point in her life and career, but “I just thought…you know, the (lab) bench is here, I just have to do better experiments,” she said.

The determination runs in the family — her daughter Susan Francia did go to UPenn, where she earned a master’s degree, and won gold medals with the US Olympic rowing team in 2008 and 2012.

Twin breakthroughs

By the late 1980s, much of the scientific community was focused on using DNA to deliver gene therapy, but Kariko believed that mRNA was also promising since most diseases are not hereditary and don’t need solutions that permanently alter our genetics.

First though, she had to overcome a major problem: in animal experiments, synthetic mRNA was causing a massive inflammatory response as the immune system sensed an invader and rushed to fight it.

Explained | Who is manufacturing India’s mRNA vaccine?  

Kariko, together with her main collaborator and co-winner Drew Weissman, discovered that one of the four building blocks of the synthetic mRNA was at fault — and they could overcome the problem by swapping it out with a modified version.

They published a paper on the breakthrough in 2005. Then, in 2015, they found a new way to deliver mRNA into mice, using a fatty coating called “lipid nanoparticles” that prevent the mRNA from degrading, and help place it inside the right part of cells.

Both these innovations were key to the Covid-19 vaccines developed by Pfizer and its German partner BioNTech, where Kariko is now a senior vice president, as well as the shots produced by Moderna.

Both work by giving human cells the instructions to make a surface protein of the coronavirus, which simulates an infection and trains the immune system for when it encounters the real virus.

Explained | How can mRNA vaccines help fight cancer? 

New treatments

Though she does not want to make too much of it, as a foreign-born woman in a male-dominated field, Kariko occasionally felt underestimated — saying people would approach after lectures and ask “Who’s your supervisor?”

“They were always thinking, ‘That woman with the accent, there must be somebody behind her who is smarter or something,'” she said.

Yet the Nobel is just the latest accolade for Kariko, who has won the Breakthrough Prize, the L’Oreal-UNESCO prize for women in science awards, among many others.

It is a far cry from the time when her late mother would call every year after prize announcements to ask why she hadn’t been chosen.

“I never in my life get (federal) grants, I am nobody, not even faculty,” she would reply with a laugh.

To which her mother would reply: “But you work so hard!”



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