WORLD
The Nobel Laureates in Chemistry 2015 have provided fundamental insights into how cells function, knowledge that can be used, for instance, in the development of new cancer treatments.
Sweden's Tomas Lindahl, the US-based Paul Modrich and Turkish-born Aziz Sancar won the 2015 Nobel Prize for Chemistry for work on mapping how cells repair damaged DNA, the award-giving body said on Wednesday.
"Their work has provided fundamental knowledge of how a living cell functions and is, for instance, used for the development of new cancer treatments," the Royal Swedish Academy of Sciences said in a statement awarding the 8 million Swedish crowns ($969,000)
The Nobel Laureates in Chemistry 2015 have provided fundamental insights into how cells function, the knowledge that can be used, for instance, in the development of new cancer treatments.
"The Nobel Prize in Chemistry 2015 is awarded to Tomas Lindahl, Paul Modrich and Aziz Sancar for having mapped, at a molecular level, how cells repair damaged DNA and safeguard the genetic information. Their work has provided fundamental knowledge of how a living cell functions and is, for instance, used for the development of new cancer treatments," said The Royal Swedish Academy in a statement.
In the early 1970s, scientists believed that DNA was an extremely stable molecule, but Tomas Lindahl demonstrated that DNA decays at a rate that ought to have made the development of life on Earth impossible. This insight led him to discover a molecular machinery, base excision repair, which constantly counteracts the collapse of our DNA.
#NobelPrize 2015 Chemistry Laureate Tomas Lindahl’s discoveries concern base excision repair: pic.twitter.com/qdkZM4albm
— The Nobel Prize (@NobelPrize) October 7, 2015
Aziz Sancar has mapped nucleotide excision repair, the mechanism that cells use to repair UV damage to DNA. People born with defects in this repair system will develop skin cancer if they are exposed to sunlight. The cell also utilises nucleotide excision repair to correct defects caused by mutagenic substances, among other things.
#NobelPrize 2015 Chemistry Laureate Aziz Sancar has mapped the mechanism that cells use to repair UV damage to DNA: pic.twitter.com/yuNrYFWJPg
— The Nobel Prize (@NobelPrize) October 7, 2015
Paul Modrich has demonstrated how the cell corrects errors that occur when DNA is replicated during cell division. This mechanism, mismatch repair, reduces the error frequency during DNA replication by about a thousandfold. Congenital defects in mismatch repair are known, for example, to cause a hereditary variant of colon cancer.
#NobelPrize 2015: Paul Modrich showed how cells correct errors occurring when DNA is replicated during cell division: pic.twitter.com/seI2wMHkAV
— The Nobel Prize (@NobelPrize) October 7, 2015
Chemistry was the third of this year's Nobel prizes. The prize is named after dynamite inventor Alfred Nobel and has been awarded since 1901 for achievements in science, literature and peace in accordance with his will.
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