Showing posts with label Nobel prize for medicine 2011. Show all posts
Showing posts with label Nobel prize for medicine 2011. Show all posts

4 Oct 2011

Nobel comes days too late for Canadian scientist

The ultimate lifetime achievement award came days too late for Canadian Steinman, who was honored for his groundbreaking work on the immune system. (AFP Photo/Mario Tama)
The ultimate lifetime achievement award came days too late for Canadian Ralph Steinman, who was honored with the Nobel Prize for Medicine for his groundbreaking work on the immune system.
The 68-year-old cell biologist's own discoveries helped extend his life but he died Friday after a four-year battle with pancreatic cancer, his daughter told AFP.
"We said to him, 'Hang on until Monday,'" said Alexis Steinman, 34. "We joked, we said, 'You know you got to keep going until the Nobel.''
She said the family was only alerted to Steinman's win when her mother discovered an email on his cell phone, which had been "turned to silent."
His hopes were raised a few years ago when he heard he was on the short list for the Nobel Prize. He did not win that year, she recalled, but the family has considered the possibility every year since.
Steinman shared the award with Bruce Beutler of the United States and Luxembourg-born Jules Hoffmann, a naturalized French citizen, for their work on the body's complex defense system in which signaling molecules unleash antibodies and killer cells to respond to invading microbes.
"The news is bittersweet, as we also learned this morning from Ralph’s family that he passed a few days ago after a long battle with cancer. Our thoughts are with Ralph's wife, children and family," said Marc Tessier-Lavigne, president of the New York-based Rockefeller University where he worked.
The university said in a statement it was also "delighted" to learn of the Nobel honor, and added Steinman's "life was extended using a dendritic cell-based immunotherapy of his own design."
The Nobel committee in Stockholm, Sweden said it would stand by the award, even though it is typically not given out posthumously.
"We just got the information. What we can do now is only to regret that he could not experience the joy," Goeran Hansson, the head of the Nobel assembly at Karolinska Institutet, was quoted as saying by the Swedish news agency TT.
According to the committee's rules, "work produced by a person since deceased shall not be considered for an award. If, however, a prizewinner dies before he has received the prize, then the prize may be presented."
Steinman was born in Montreal, Canada on January 14, 1943, and earned his medical degree from Harvard University in 1968.
He and his collaborator Zanvil Cohn discovered in 1973 a new cell type called the dendritic cell.
Steinman "speculated that it could be important in the immune system and went on to test whether dendritic cells could activate T cells, a cell type that has a key role in adaptive immunity," said the Nobel committee.
"These findings were initially met with skepticism but subsequent work by Steinman demonstrated that dendritic cells have a unique capacity to activate T cells."
Tessier-Lavigne said his research "laid the foundation for numerous discoveries in the critically important field of immunology, and it has led to innovative new approaches in how we treat cancer, infectious diseases and disorders of the immune system."
Steinman began work at Rockefeller University in 1970 as a postdoctoral fellow and was named director of the Christopher Browne Center for Immunology and Immune Diseases in 1998.
He received a host of honors during his life, including the 2007 Lasker Award for Basic Medical Research and the 2009 Albany Medical Center Prize in Medicine and Biomedical Research, which he shared with Beutler.
"I think it is a great tragedy that he didn't live quite long enough to know that he had won the Nobel Prize," Beutler told AFP.
"He had received many other prestigious awards," he added. "He knew he was in line for it (a Nobel), that's for sure."
Steinman's daughter, Alexis, said the family was moved by the news of the prestigious prize.
"He was always hopeful... but he was a very humble man. He said, 'There are all these great scientists out there, they will pick some one else," she told AFP.
"He was sick and he thought that his time had passed."
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3 Oct 2011

Immune system discoveries earn Nobel in medicine

(From L to R:  Ralph Steinman, Bruce Beutler& Jules Hoffmann)
Three scientists won the Nobel Prize in medicine on Monday for discoveries about the immune system that opened new avenues for the treatment and prevention of infectious illnesses and cancer.
American Bruce Beutler and French scientist Jules Hoffmann shared the 10 million-kronor ($1.5 million) award with Canadian-born Ralph Steinman, the Nobel committee at Stockholm's Karolinska institute said.
Beutler and Hoffmann were cited for their discoveries in the 1990s of receptor proteins that can recognize bacteria and other microorganisms as they enter the body, and activate the first line of defense in the immune system, known as innate immunity.
Steinman was honored for the discovery two decades earlier of dendritic cells, which help regulate adaptive immunity, the next stage of the immune system's response, when the invading microorganisms are purged from the body.
"Their work has opened up new avenues for the development of prevention and therapy against infections, cancer and inflammatory disease," the citation said.
Prize committee member Hans-Gustav Ljunggren told The Associated Press that drug companies are using the discoveries to develop better vaccines, though none are on the market yet.
"Some vaccines against hepatitis are coming out, large clinical trials are being done today," Ljunggren said.
In the long-term it will be possible to use the discoveries to improve the treatment of cancer, rheumatoid arthritis, type 1 diabetes, multiple sclerosis, and chronic inflammatory diseases, committee secretary Goran Hansson said.
Hansson said he had not been able to reach any of the winners before the announcement.
"Hoffmann for example is traveling in China and is difficult to reach," he said.
Beutler, born in 1957, is professor of genetics and immunology at The Scripps Research Institute in La Jolla, California. Hoffmann, 70, headed a research laboratory in Strasbourg, France, between 1974 and 2009 and served as president of the French National Academy of Sciences between 2007-2008.
Steinman, 68, has been affiliated with Rockefeller University in New York since 1970, and heads its Center for Immunology and Immune Diseases.
Hoffmann's discovery came in 1996 during research on how fruit flies fight infections. Two years later, Beutler's research on mice showed that fruit flies and mammals activate innate immunity in similar ways when attacked by germs.
Steinman's discovery dates back to 1973, when he found a new cell type, the dendritic cell, which has a unique capacity to activate so-called T-cells. Those cells have a key role in adaptive immunity, when antibodies and killer cells fight infections. They also develop a memory that helps the immune system mobilize its defenses next time it comes under a similar attack.
The trio's discoveries have enabled the development of new methods for treating and preventing diseases, including improved vaccines and in attempts to help the immune system to attack tumors, the committee said.
The medicine award kicked off a week of Nobel Prize announcements, and will be followed by the physics prize on Tuesday, chemistry on Wednesday, literature on Thursday and the Nobel Peace Prize on Friday. The winners of the economics award will be announced on Oct. 10.
The coveted prizes were established by wealthy Swedish industrialist Alfred Nobel — the inventor of dynamite — except for the economics award, which was created by Sweden's central bank in 1968 in Nobel's memory. The prizes are always handed out on Dec. 10, on the anniversary of Nobel's death in 1896.
Last year's medicine award went to British professor Robert Edwards for fertility research that led to the first test tube baby.
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