বুধবার, ৫ অক্টোবর, ২০১১

Nobel medicine winner died days before honor

A scientist who won the Nobel prize for medicine on Monday for work on fighting cancer died of the disease himself just three days before he could be told of his award.

Canadian-born Ralph Steinman, 68, had been using his own discoveries to extend his life, treating himself with a groundbreaking therapy based on his research into the body's immune system. He died on Friday after a four-year battle with pancreatic cancer. His colleagues at Rockefeller University in New York called it a "bittersweet" honor.

The Nobel committee had been unaware of Ralph Steinman's death and it was unclear whether the prize would be rescinded because Nobel statutes don't allow posthumous awards.

Steinman, 68, who shared the prize with American Bruce Beutler and French scientist Jules Hoffmann, died on Sept. 30, acccording to Rockefeller University, which said he had been treated with immunotherapy based on his discovery of dendritic cells two decades earlier.

The cells help regulate adaptive immunity, an immune system response that purges invading microorganisms from the body.

The Nobel statutes don't allow posthumous awards unless a laureate dies after the announcement but before the Dec. 10 award ceremony. That happened in 1996 when economics winner William Vickrey died a few days after the announcement.

Nobel officials said they believed it was the first time that a laureate had died before the announcement without the committee's knowledge.

"I think you can safely say that this hasn't happened before," Nobel Foundation spokeswoman Annika Pontikis told the AP.

Before the statues were changed in 1974 two Nobel Prizes were given posthumously. In 1961 U.N. Secretary General Dag Hammarskjold was awarded the Nobel Peace Prize less than a month after he died in a plane crash during a peace mission to Congo. Swedish poet Erik Axel Karlfeldt won the Nobel Prize in literature in 1931, although he had died in March the same year.

Nobel committee member Goran Hansson said the Nobel committee didn't know Steinman was dead when it chose him as a winner and was looking through its regulations.

"It is incredibly sad news," Hansson said. "We can only regret that he didn't have the chance to receive the news he had won the Nobel Prize. Our thoughts are now with his family."

Beutler, 53, is based at the Scripps Research Institute in La Jolla, California. Luxembourg-born Hoffmann, 70, conducted much of his work in Strasbourg. They will share half the 10 million Swedish crowns ($1.46 million) of prize-money. The rest should have gone to Steinman, though the unusual circumstances leave its fate now in some doubt.

Steinman had been affiliated with Rockefeller University in New York since 1970, and headed its Center for Immunology and Immune Diseases.

"We are all so touched that our father's many years of hard work are being recognized with a Nobel Prize," Steinman's daughter, Alexis Steinman, said in the Rockefeller University statement. "He devoted his life to his work and his family, and he would be truly honored."

The trio's discoveries have enabled the development of improved vaccines against infectious diseases. In the long term they could also yield better treatments of cancer, rheumatoid arthritis, type 1 diabetes, multiple sclerosis, and chronic inflammatory diseases, Hansson 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.

The work of the three scientists has been pivotal to the development of improved types of vaccines against infectious diseases and novel approaches to fighting cancer. The research has helped lay the foundations for a new wave of "therapeutic vaccines" that stimulate the immune system to attack tumors.

"They have made possible the development of new methods for preventing and treating disease, for instance with improved vaccines against infections and in attempts to stimulate the immune system to attack tumors," the committee said.


Better understanding of the complexities of the immune system has also given clues for treating inflammatory diseases, such as rheumatoid arthritis, where the components of the self-defense system end up attacking the body's own tissues.

Beutler and Hoffmann discovered in the 1990s that receptor proteins act as a first line of defense, innate immunity, by recognizing bacteria and other microorganisms. Steinman's work, explained how, if required, dendritic cells in the next phase, adaptive immunity, kill off infections that break through.

Understanding dendritic cells led to the launch of the first therapeutic cancer vaccine last year, Dendreon's Provenge, which treats men with advanced prostate cancer.

No vaccines are on the market yet, but Hansson told AP that vaccines against hepatitis are in the pipeline. "Large clinical trials are being done today," he said.

Medicine, or physiology, is usually the first of the Nobel prizes awarded each year. Prizes for achievements in science, literature and peace were first awarded in 1901 accordance with the will of dynamite inventor and businessman Alfred Nobel.

The award citation noted that the world's scientists had long been searching for the "gatekeepers" of immune response.

Last year's medicine award went to British professor Robert Edwards for fertility research that led to the first test tube baby.

The Associated Press and Reuters contributed to this report

Source: http://www.msnbc.msn.com/id/44755546/ns/health-health_care/

whitney person of interest james spader james spader frances bean cobain speed of light presidential debate

কোন মন্তব্য নেই:

একটি মন্তব্য পোস্ট করুন