Stem Cell Pioneers Win Nobel Prize for Medicine

Shinya Yamanaka of Japan and John Gurdon of Britain have won the Nobel Prize for medicine for work in cell programming, a frontier that has raised dreams of replacement tissue for people crippled by disease. At a press conference in London, Gurdon, 79, spoke about his long career.

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8 months ago

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Shinya Yamanaka, John Gurdon

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SHOTLIST LONDON, OCTOBER 8, 2012, SOURCE: AFPTV -VAR of the press conference SOUNDBITE 1 John Gurdon (man), Nobel prize laureate (English, 6 sec): "Am I going back to work tomorrow morning? Yes, I work full time, surprisingly at my advanced age, but it's nice to do that" -VAR of the press conference SOUNDBITE 2 John Gurdon (man), Nobel prize laureate (English, 32 sec): "I was at a school where you did no science until the age of 15. Then I did one term of science and the school master wrote this report, details of which I can't exactly remember but the main gist of it was that he had heard that Gurdon was interested in doing science and that this was a completely ridiculous idea because there was no hope whatever of my doing science and any time spent on it would be a total waste of time both on my part and on the part of the person having to teach him." -VAR of the press conference SOUNDBITE 3 John Gurdon (man), Nobel prize laureate (English, 20 sec): "This work I was involved in had no obvious therapeutic benefit at all, it was a kind of a purely scientific question : do all our cells have the same genes? There was no prospect of that being useful to people but I think it's crucial in this country that we are able to support basic research." -VAR of the press conference /// -----------------------------------------------------------AFP TEXT STORY : Nobel-medicine,5thlead-WRAP Stem cell pioneers win Nobel for medicine by Pia Ohlin =(PICTURE)= ATTENTION - ADDS laureates' quotes /// STOCKHOLM, Oct 8, 2012 (AFP) - Shinya Yamanaka of Japan and John Gurdon of Britain won the Nobel Prize on Monday for work in cell programming, a frontier that has raised dreams of replacement tissue for people crippled by disease. The two scientists found that adult cells can be transformed back to an infant state called stem cells, the key ingredient in the vision of regenerative medicine. "Their findings have revolutionised our understanding of how cells and organisms develop," the Nobel jury declared. "By reprogramming human cells, scientists have created new opportunities to study diseases and develop methods for diagnosis and therapy." Among those who acclaimed the award were Britain's Royal Society, Ian Wilmut, "father" of Dolly the cloned sheep, and a leading ethicist, who said it eased a storm about the use of embryonic cells. Stem cells are precursor cells which differentiate into the various organs of the body. They have stirred huge excitement, with hopes that they can be coaxed into growing into replacement tissue for victims of Alzheimer's, Parkinson's and other diseases. Gurdon, 79, said he was grateful but also surprised by the honour, since his main research was done more than 40 years ago. In 1962, he discovered that the DNA code in the nucleus of an adult frog cell held all the information to develop into every kind of cell. This meant that an adult cell could in essence be reprogrammed. His landmark discovery was initially met with scepticism, as the journey from immature to specialised cell was previously deemed irreversible. "I'm amazed and immensely grateful and astonished that they should recognise work done such a long time ago," Gurdon told Swedish Radio. "Of course I'm extremely grateful to be recognised with Shinya Yamanaka who's done this wonderful work," he added. "It is particularly pleasing to see how purely basic research, originally aimed at testing the genetic identity of different cell types in the body, has turned out to have clear human health prospects," he later told reporters in London. Based at Cambridge University, Gurdon is fond of recalling that his school tutor told him when he was 15 that it would be a "total waste of time" to pursue a career in science, and credits his mother with encouraging him to follow his passion. More than four decades later, in 2006, Yamanaka, now 50, discovered how mature cells in mice could be turned back to their youthful state using a batch of reprogramming genes. The advantage of this would be to avert the need to use stem cells taken from early-stage embryos. These are hugely versatile but have stirred ethical controversy. "This is not only a giant leap for science, it is a giant leap for mankind. Yamanaka and Gurdon have shown how science can be done ethically," a professor of practical ethics at the University of Oxford, Julian Savulescu, told the Science Media Centre in London. Yamanaka "deserves not only a Nobel Prize for Medicine, but a Nobel Prize for Ethics," he said. Yamanaka, a professor at Kyoto University, has pointedly warned of the ethical controversies of science. "We should limit the application of technology to treatment or what can make patients happier," he has said. "We may be able to generate new life (with this technique), so we are presented with another ethical issue." Stem-cell research is still at a very early stage, and only a tiny number of human trials have taken place. In the field of so-called induced pluripotent stem (iPS) cells, for which Yamanaka was singled out for the Nobel, work is still only in the lab. He was modest about the honour on Monday, telling reporters he was "just an obscure researcher" who planned to carry on his research. "I really feel that I have to realise a medical application and contribute to society as soon as possible," he said. The pair had been among the frontrunners for a Nobel after they won the prestigious Lasker Prize in 2009 and Yamanaka shared the 1.2-million-euro Millennium Technology Prize earlier this year with a software engineer. Because of the economic crisis, the Nobel Foundation has slashed its prize sum to eight million Swedish kronor ($1.2 million, 930,000 euros) per award, down from the 10 million kronor awarded since 2001. On Tuesday, the winners of the physics prize will be announced, followed by the chemistry prize on Wednesday and the literature prize on Thursday. Perhaps the most-watched award, for peace, will be announced Friday and the economics prize will wind up the Nobel season on October 15. The laureates will receive their prizes at formal ceremonies in Stockholm and Oslo on December 10, the anniversary of prize founder Alfred Nobel's death in 1896.