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Katalin "Kati" Karikó (Hungarian: Karikó Katalin, pronounced [ˈkɒrikoː ˌkɒtɒlin]; born 17 January 1955) is a Hungarian-American biochemist who specializes in ribonucleic acid (RNA)-mediated mechanisms, particularly in vitro-transcribed messenger RNA (mRNA) for protein replacement therapy. Karikó laid the scientific groundwork for mRNA vaccines, overcoming major obstacles and skepticism in the scientific community. Karikó received the Nobel Prize in Physiology or Medicine in 2023 for her work, along with American immunologist Drew Weissman. Karikó spent more than twenty years as a poorly supported researcher at the University of Pennsylvania, where she is an adjunct professor. Prior to her winning the Nobel Prize, the University of Pennsylvania had demoted her, cut her pay, and described Karikó as "not of faculty quality"; she was never granted tenure. Karikó co-founded and was CEO of RNARx from 2006 to 2013. From 2013 to 2022, she was associated with BioNTech RNA Pharmaceuticals, first as a vice president and promoted to senior vice president in 2019. In 2022, she left BioNTech to devote more time to research. In 2021, she received an honorary doctorate from the University of Szeged in Hungary, where she has since become a professor. Karikó's work includes scientific research on RNA-mediated immune activation, resulting in the co-discovery with Drew Weissman of the nucleoside modifications that suppress the immunogenicity of RNA. This is seen as a further contribution to the therapeutic use of mRNA. Together with Weissman, she holds United States patents for the application of non-immunogenic, nucleoside-modified RNA. This technology has been licensed by BioNTech and Moderna to develop their protein replacement technologies, but it was also used for their COVID-19 vaccines. The messenger RNA-based technology developed by Karikó and the two most effective vaccines based on it, BioNTech/Pfizer and Moderna, have formed the basis for the effective and successful fight against SARS-CoV-2 virus worldwide and have contributed significantly to the containment of the COVID-19 pandemic. For their work, Karikó and Weissman have received numerous other awards besides the Nobel, including the Lasker–DeBakey Clinical Medical Research Award, Time Magazine's Hero of the Year 2021, and the Tang Prize Award in Biopharmaceutical Science in 2022. Early life and education Katalin Karikó was born in Szolnok, and grew up in Kisújszállás, Hungary, in a small home without running water, a refrigerator, or television. Her father was a butcher, and her mother was a bookkeeper. She excelled in science during her primary education, earning third place in Hungary in a biology competition. Karikó obtained a BSc degree in biology in 1978 and her PhD in biochemistry in 1982, both from the University of Szeged. She worked with Jenő Tomasz and continued her postdoctoral research at the Institute of Biochemistry, Biological Research Centre (BRC) of Hungary. From 1978 until 1985, she was listed as an intelligence asset by the Communist Hungarian secret police, something she says she was blackmailed into out of fear of repercussions on her career or reprisals against her father. She claims that she did not provide them with information nor was she active as an agent. In 1985, her lab at the BRC lost its funding, and Karikó sought work at institutions in other countries. After being offered a research position by Robert J. Suhadolnik of Temple University, Karikó left Hungary for the United States with her husband and two-year-old daughter (and, smuggled inside her daughter's teddy bear, £900 that they had received from selling their car and buying British pounds on the black market). Career Between 1985 and 1988, Karikó served as a postdoctoral fellow at Temple University in Philadelphia. Karikó participated in a clinical trial in which patients with AIDS, hematologic diseases, and chronic fatigue syndrome were treated with double-stranded RNA (dsRNA). At the time, this was considered groundbreaking research, as the molecular mechanism of interferon induction by dsRNA was not known, although the antiviral and antineoplastic effects of interferons were well-documented. In 1988, Karikó accepted a job at Johns Hopkins University without first informing her lab advisor Suhadolnik of her intention to leave Temple, as recounted in Gregory Zuckerman's 2021 book A Shot to Save the World. Suhadolnik told her that if she went to Johns Hopkins, he would have her deported, and subsequently reported her to U.S. immigration authorities, claiming that she was "illegally" in the United States. In the time it took her to successfully challenge the resulting extradition order, Johns Hopkins withdrew the job offer. Suhadolnik "continued bad-mouthing Karikó, making it impossible for her to get a new position" at other institutions, until she met a researcher at Bethesda Naval Hospital who "had his own difficult history with Suhadolnik". Karikó subsequently confirmed that the incident had happened as Zuckerman described, but emphasized that "more importantly I was always grateful to [Suhadolnik for] sending me the IAP66 form in 1985, for the opportunity he gave me to work in his lab", noting that "when I gave a lecture [at Temple, a] couple of years later, I thanked him for the science I learned from him." From 1988 to 1989, she worked at the Uniformed Services University of the Health Sciences in Bethesda, Maryland where she worked with signal protein interferons. In 1989, she was hired by the University of Pennsylvania to work with cardiologist Elliot Barnathan on messenger RNA (mRNA). In 1990, while an adjunct professor at the Perelman School of Medicine at the University of Pennsylvania, Karikó submitted her first grant application in which she proposed establishing mRNA-based gene therapy. Ever since, mRNA-based therapy has been Karikó's primary research interest. However, in the 1990s, mRNA fell out of favor as many researchers, biotechs, and pharmaceutical companies doubted its potential. Though supported by Elliot Barnathan (who left UPenn in 1997) and David Langer (who then hired her), Karikó found it difficult to gain funding. She was initially on track to become a full professor, but after repeated grant rejections the university demoted her in 1995. Nevertheless, she chose to remain and continue her mRNA research. In 1997, she met Drew Weissman, a professor of immunology who had recently arrived at the University of Pennsylvania. They began to exchange ideas and then to collaborate. Weissman's funding was critical in helping Karikó to continue and extend her research and the combination of Weissman's immunology and Karikó's biochemistry was extremely effective. They began to move the technology forward, solving problems one at a time, and eventually gaining recognition. Weissman has commented "We had to fight the entire way." Karikó's persistence was noted as exceptional against the norms of academi.... Discover the Mike Meyers Jonathan S Weissman popular books. Find the top 100 most popular Mike Meyers Jonathan S Weissman books.