One treatment option for patients with late-stage melanoma involves removing natural cancer-fighting T cells from the tumor, expanding their numbers in culture dishes, and then re-infusing them into the patient. This strategy—called adoptive immunotherapy— causes tumor regression in about half the patients treated, some of whom survive for decades without relapse.
The French team, lead by Dr. Nathalie Labarriere, studied the infused cells from 30 stage III melanoma patients who had received adoptive immunotherapy between 1994 and 1998.
Among the cells taken from a patient who has remained tumor-free for more than a decade, they found naturally-arising T cells that recognized a new protein, which they dubbed "meloe-1." Meloe-1, the group found, is highly expressed in melanoma cells but not in normal skin cells or in other types of cancer.
When they looked at the transferred cells from the other patients, they found meloe-1-specific T cells in 5 of the 9 patients who remained relapse-free, but in none of the 21 patients who relapsed.
The association of meloe-1-specific T cells with relapse-free survival suggests that amplifying these T cells in culture may be one way to improve the efficacy of adoptive immunotherapy. The team has also succeeded in finding meloe-1 T cells in patients' circulating blood—a much more accessible source than tumor tissue.
Heather Van Epps | EurekAlert!
Researchers simplify tiny structures' construction drip by drip
12.11.2018 | Princeton University, Engineering School
Mandibular movement monitoring may help improve oral sleep apnea devices
06.11.2018 | Elsevier
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences