Mon | Nov 28, 2022

Nobel Prize for three chemists who made molecules ‘click’

Published:Wednesday | October 5, 2022 | 6:41 AM
Secretary General of the Royal Swedish Academy of Sciences Hans Ellegren, centre, Jonas Aqvist, Chairman of the Nobel Committee for Chemistry, left, and Olof Ramstrom, member of the Nobel Committee for Chemistry announce the winners of the 2022 Nobel Prize in Chemistry during a press conference at the Royal Swedish Academy of Sciences in Stockholm, Sweden, Wednesday, October 5, 2022. (Christine Olsson /TT News Agency via AP)

STOCKHOLM (AP) — Three scientists were jointly awarded this year's Nobel Prize in chemistry on Wednesday for developing a way of “snapping molecules together” that can be used to design better medicines.

Americans Carolyn R. Bertozzi and K. Barry Sharpless, and Danish scientist Morten Meldal were cited for their work on click chemistry and bioorthogonal reactions, which are used to make cancer drugs, map DNA and create materials that are tailored to a specific purpose.

“It's all about snapping molecules together,” said Johan Aqvist, a member of the Royal Swedish Academy of Sciences that announced the winners Wednesday at the Karolinska Institute in Stockholm, Sweden.

Sharpless, 81, who previously won a Nobel Prize in 2001 and is now the fifth person to receive the award twice, first proposed the idea for connecting molecules using chemical “buckles” around the turn of the millennium, said Aqvist.

Meldal, 68, based at the University of Copenhagen, Denmark, and Sharpless, who is affiliated with Scripps Research, California, independently found the first such candidates that would easily snap together with each other but not with other molecules, leading to applications in the manufacture of medicines and polymers.

Bertozzi, 55, who is based at Stanford University in California, “took click chemistry to a new level,” the Nobel panel said.

She found a way to make click chemistry work inside living organisms without disrupting them, establishing a new method known as bioorthogonal reactions. Such reactions are now used to explore cells, track biological processes and design drugs that can target diseases such as cancer more precisely.

A week of Nobel Prize announcements kicked off Monday with Swedish scientist Svante Paabo receiving the award in medicine for unlocking secrets of Neanderthal DNA that provided key insights into our immune system.

Three scientists jointly won the prize in physics Tuesday. Frenchman Alain Aspect, American John F. Clauser and Austrian Anton Zeilinger had shown that tiny particles can retain a connection with each other even when separated, a phenomenon known as quantum entanglement, that can be used for specialised computing and to encrypt information.

The awards continue with literature on Thursday. The 2022 Nobel Peace Prize will be announced on Friday and the economics award on Monday.

The prizes carry a cash award of 10 million Swedish kronor (nearly $900,000) and will be handed out on Dec. 10. The money comes from a bequest left by the prize's creator, Swedish inventor Alfred Nobel, in 1895.

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