The Nobel Prize-Winning, LSD Dropping, Yet Problematic Scientist Who Invented PCR

Author : izzadragon
Publish Date : 2020-12-13

The Nobel Prize-Winning, LSD Dropping, Yet Problematic Scientist Who Invented PCR

Every day, hundreds of thousands — if not millions — of molecular reactions are happening in laboratories worldwide. Small droplets of liquid that give us a lens into an individual’s respiratory pathways are analyzed for whether or not they contain the pathogen of the year: SARS-CoV-2, the virus that causes Covid-19. The technique used for this analysis is called polymerase chain reaction (PCR), and it exploits the ability of genetic material to replicate. Although imperfect, it’s been critical in diagnosing the disease by amplifying genes specific to SARS-CoV-2. When it’s accurate, PCR helps confirm positive cases, slows the spread of infection, and allows health officials to treat individuals who have Covid-19.

In a sense, Covid-19 has popularized PCR. Over the last nine months, as the virus ballooned, PCR has transformed from a technical term used nearly exclusively by scientists — and one that would be flagged as jargon by many science editors — to one that has become a part of the general vernacular. While PCR is now well-known, many may not know the person who developed the idea.

If James Watson, Francis Crick, and Rosalind Franklin uncovered the secret of life by documenting the discovery of DNA in the 1950s, Kary Mullis, PhD, decoded it with PCR. Mullis came up with the idea in 1983, and a decade later, won the Nobel Prize in recognition of his work.

Without PCR, science and the world as we know it — including having a testing method for Covid-19 — wouldn’t exist. “PCR is veritably synonymous with biotechnology itself,” says Richard Doyle, PhD, a historian of science focusing on information biology at Pennsylvania State University. Without it, projects such as the Human Genome Project, an ambitious endeavor to understand the secrets of our genes, would not even be conceivable.

Mullis passed away last year at 74 in his home in Newport Beach, California, due to complications from pneumonia. He has frequently been described as “eccentric” and “quirky” for his open use of psychedelics, belief in astrology, and an encounter with a glowing raccoon. Some may even argue that Mullis was an unlikely Nobel laureate, a maverick. But those descriptions belie some of Mullis’ more problematic aspects: He used his platform as Nobel laureate to flout that HIV causes AIDS and that climate change was real. He had a proclivity for pursuing women in his earlier days and sexually harassed a female journalist who interviewed him. Which makes one wonder: If Kary Mullis contains multitudes — as we all do — how should we remember him?

KKary Mullis was born in 1944, in Lenoir, North Carolina, a town at the foothills of the Blue Ridge Mountains.

His childhood was rife with youthful curiosities. When it was time to pick what he wanted for Christmas, seven-year-old Mullis leafed through catalogs and landed on a Gilbert Chemistry Set. “Something about tubes filled with things with exotic names intrigued me,” he wrote in his memoir Dancing Naked in the Mind Field. “My objective with that set was to figure out what things I might put together to cause an explosion.”

After high school, Mullis started immersing himself in the world of chemistry. His father got him a job at Columbia Organic, a supplier of research chemicals. By the time he made it to the Georgia Institute of Technology in Atlanta for college, he married Richards Haley, with whom he had a daughter. Despite his obligations to his family, Mullis was a good student and got good grades, and graduated with a degree in, fittingly, chemistry.

After college, Mullis was torn between studying biochemistry or astrophysics. He decided on biochemistry because not only would interest in astrophysics likely diminish after the nuclear arms race with the Soviet Union, but because biochemistry would be more relatable. “The universe sounds pretty universal, but try discussing it at a party with a 22-year-old woman who never thought about neutral kaon decay rates,” he wrote in his memoir. “Then talk to the same woman about why ethylamino derivatives of safrole like MDA will make you want to take off your clothes and feel warm and cuddly for about eight hours. A strong social impulse will lead you away from astrophysics and towards biochemistry.”

Mullis moved his family across the country to Berkeley to pursue his PhD. It was the 1960s and the heyday of the counterculture revolution in the Bay Area. In his first year, Mullis befriended a man named Brad, the only guy in his class with long hair. “I figured he would have LSD,” Mullis wrote. His early, mind-altering forays with LSD led him to synthesize other psychedelic chemicals in the lab — some with unexpected, bad consequences.

At Berkeley, after completing his PhD, Mullis bought a cabin in Mendocino County. Throughout the remaining years of his life, Mullis returned frequently to it. It was there that he planted trees, foraged for mushrooms, and even, according to Mullis, encountered an extraterrestrial glowing raccoon while walking outside his cabin.
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After his PhD, his second wife went to Kansas for medical school, and Mullis followed suit. He floundered briefly as a writer before taking up another job as a research scientist. When that marriage ended, he moved back to Berkeley and got a job at the University of California at San Francisco, to study rat brains. During his tenure at UCSF, Mullis attended a talk which described efforts to clone the gene for somatostatin, a master controller of hormones, and was inspired to delve in the world of DNA synthesis. He was hired by the now-defunct biotechnology company, Cetus Corporation, in 1979, to synthesize short strands of DNA or RNA called oligonucleotides.

The idea for PCR came to him one evening in 1983, when he and his then-girlfriend, a chemist at Cetus named Jennifer, were driving up to his cabin in Mendocino. Their relationship at that point was rocky, and Jennifer fell asleep to avoid conversation with Mullis.

The moment of discovery, as Mullis described it in his memoir, seemed psychedelic. “Lurid blue and pink images of electric molecules injected themselves somewhere between the mountain road and my eyes,” he wrote. Later on, in a BBC interview, Mullis wondered, if not for LSD, would he have been creative enough to have invented PCR? “I don’t know. I doubt it. I seriously doubt it,” he said.

To come up with the idea behind PCR, Mullis says he tapped into his understanding of computer programming. He reasoned that in order to “find” a particular segment of DNA, he needed to design DNA fragments that bookended specific gene sequences to narrow his search. And because DNA replicates under the right conditions, the isolated segment could “reproduce the hell out of itself” in an iterative fashion.

“Holy shit!” Mullis veered onto the shoulder of the road and jotted down what he just envisioned. At that moment, he knew the possible impact that this idea would have. “Everybody on Earth who cared about DNA would want to use it. It would spread into every biology lab in the world,” he wrote. He went as far as to prophesize, “I would be famous. I would get the Nobel Prize.”
In the lab at Cetus, Mullis tried to make his roadside revelation a reality. But he ran into challenges. Mullis, along with his colleagues Henry Erlich, Randall K. Saiki, Steven Scharf, Norman Arnheim, and Fred Faloona, were trying to develop an assay for diagnosing sickle cell anemia. Whereas Erlich, Saiki, and Arnheim were attempting to use PCR in human cells, Mullis and Faloona opted to try it out first in a simpler system, looking for the sickle cell anemia gene in a circular piece of DNA. When Erlich, Saiki, and Arnheim successfully detected the beta-globin gene on a gel by using a radioactive probe, Mullis struggled to get even a signal: The method he conceptualized seemed to have amplified all DNA segments, not just the very specific fragment that he was searching for.

Erlich, Arnheim, Saiki, and Scharf first figured out how to find the gene using PCR in a much more complex system. When Erlich tried giving Mullis some pointers, Mullis was sometimes unwilling to adopt these ideas. In 1985, the Cetus researchers published the first paper on the use of PCR to diagnose sickle cell anemia, in the prestigious journal, Science. Although they used Mullis’ idea, he was not the first author.

Mullis, however, still wanted to publish independently on the technique itself. But both Nature and Science rejected this manuscript. Science, which published the team’s original 1985 paper, told Mullis that perhaps his technique paper could be published in a secondary journal. “Fuck them,” Mullis thought. (The PCR paper was eventually published two years later, in Methods of Enzymology. Later, Science called PCR the “invention of the year.”)

Mullis’ behavior at work didn’t win him any favors. He kept beer in the same fridge where he kept radioisotopes. He had conflicts with Cetus’ safety officer, who he called the “danger officer.” Mullis and Jennifer’s volatile relationship extended into the workplace; at one point, he threatened to bring a gun into work because he thought someone was going out with Jennifer.
“He was generally a pretty difficult guy, and didn’t play well with others,” Erlich told Elemental. “But he had a great idea that had enormous consequences once it had been reduced to practice.”

In 1986, just as PCR was beginning to be more widely used, Mullis quit his job at Cetus. The company gave him $10,000 for his idea, but because Mullis developed PCR while he was an employee, Cetus retained the rights to PCR. In 2000, Cetus sold those rights for $300 million to Hoffmann-La Roche. Mullis was indignant. “Hoffmann-La Roche paid Cetus Corporation for the patent rights to my PCR invention without bothering to even send me a card celebrating my 17,520th day [of life]…. Screw Cetus and the Swiss!”
DuPont was another biotechnology company interested in buying the rights to PCR, but lost the sale to Roche. In 1991, they subsequently tried to dispute Mullis’ patent for PCR, saying that PCR had already been described in the early 1970s. Despite butting heads at Cetus, Erlich and Mullis’ former colleagues came together to support Mullis’ case as the sole inventor of PCR.
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AAyear later, in 1992, Mullis started getting the recognition he was seeking for his idea. In December, he arrived home to a letter from the Japanese Ministry of Technology informing him he had been awarded the Japan Prize. He spent the evening contemplating the yen to dollar exchange rate, and if he would end up rich. Then, on October 13, 1993, on his mother’s birthday, Mullis received a call at the crack of dawn. When Mullis called back, the speaker on the other end said, “Congratulations, Mr. Mullis. I am pleased to be able to announce that you have been awarded the Nobel Prize.”

“I’ll take it!” Mullis exclaimed. Ecstatic, he hung up, called his mom, then met up with his friend, Steve Judd, to go for a celebratory surf.

A year later, Emily Yoffe, then a freelance magazine writer living in Los Angeles, heard about “the surfing scientist” winning a Nobel and pitched a profile of Mullis to Esquire. The magazine commissioned the piece, and Yoffe drove to La Jolla to meet with Mullis. During the interview, Mullis answered Yoffe’s questions between glasses of wine, and at one point forcibly grabbed her by the neck for a kiss. Yoffe narrowly skirted him and chastised him. Mullis said, “You’re missing your chance to really know me. How can you say you know me without sleeping with me?”
The pharmaceutical company GlaxoSmithKline paid him a check of $6,048 to not speak at their annual conference.

“We’re not sorry he became a scientist,” Y

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