yoshinori ohsumi wins nobel prize in medicine for work
Last Updated : GMT 06:49:16
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Last Updated : GMT 06:49:16
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Yoshinori Ohsumi wins Nobel prize in medicine for work

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Arab Today, arab today Yoshinori Ohsumi wins Nobel prize in medicine for work

The Nobel prize in medicine has been awarded to Yoshinori Ohsumi for his discoveries on how the body’s cells
Greek - Arab Today

The Nobel prize in medicine has been awarded to Yoshinori Ohsumi for his discoveries on how the body’s cells detoxify and repair themselves. 


The Japanese cell biologist will receive the prestigious 8m Swedish kronor (£718,000) award for “mechanisms for autophagy”. 


Autophagy is essentially the body’s internal recycling program - scrap cells are hunted down and the useful parts are stripped out to generate energy or create new cells. It is a crucial process to prevent cancerous growths, and, by maintaining a healthy metabolism, helps protect against conditions like diabetes. 


Disturbances in the autophagy machinery have been linked to Parkinson’s disease, type 2 diabetes, cancer and several age-related disorders. Mutations in autophagy genes can cause genetic disease. Intense research is now underway to develop drugs that can target autophagy in various diseases. 


The word autophagy originates from two Greek words meaning “self-eating”. This concept emerged during the 1960s, when researchers first observed that the cell could destroy its own contents by enclosing it in membranes, forming sack-like vesicles that were transported to a recycling compartment, called the lysosome, for degradation. 


Difficulties in studying the phenomenon meant that little was known until, in a series of ground-breaking experiments in the early 1990s, Yoshinori Ohsumi used baker’s yeast to identify genes essential for autophagy. He then went on to elucidate the underlying mechanisms for autophagy in yeast and showed that similar sophisticated machinery is used in human cells. 


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Ohsumi previously said that when he started out as a scientist, autophagy was not a fashionable subject. “I am not very competitive, so I always look for a new subject to study, even if it is not so popular,” he said. “If you start from some sort of basic, new observation, you will have plenty to work on.” 


Last year, the prize was shared by three scientists for discoveries that helped doctors fight malaria and infections caused by roundworm parasites. 


The Chinese chemist, Tu Youyou, was recognised for her discovery of artemisinin, one of the most effective treatments for malaria. Two other researchers, Satoshi Omura, an expert in soil microbes at Kitasato University, and William Campbell, an Irish-born parasitologist at Drew University in New Jersey, shared the other half of the prize, for the discovery of avermectin, a treatment for roundworm parasites. 


The winners of the physics, chemistry and peace prizes are to be announced later this week. The economics prize will be announced on Monday 10 October

Source: NNA

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