Science's Top 10 Breakthroughs Of 2013
This annual list of groundbreaking scientific achievements, selected by Science and its international nonprofit publisher, AAAS, also includes major breakthroughs in solar cell technologies, genome-editing techniques and vaccine design strategies, to name a few. The top-10 list appears in the 20 December issue of the journal along with a related news feature and a multimedia component.
Cancer immunotherapy clinched the #1 spot on the list because, although its ultimate impact on the disease is unknown, recent results are highlighting its success so far.
“This year there was no mistaking the immense promise of cancer immunotherapy,” said Tim Appenzeller, chief news editor of the journal Science. “So far, this strategy of harnessing the immune system to attack tumors works only for some cancers and a few patients, so it’s important not to overstate the immediate benefits. But many cancer specialists are convinced that they are seeing the birth of an important new paradigm for cancer treatment.”
Many of today’s advances in cancer immunotherapy can be traced back to the late 1980′s, when French researchers identified a receptor on T cells, called CTLA-4. James Allison discovered that this receptor prevented T cells from attacking invaders with their full force. In the mid-1990′s Allison showed that blocking CTLA-4 in mice could unleash T cells against tumor cells in the animals, shrinking them dramatically.
In the meantime, Japanese researchers identified another “brake” on T cells known as PD-1. Clinical trialsinvolving this receptor began in 2006, and preliminary results in small groups of patients appear to be promising.
Another area of interest involves genetically modifying T cells to make them target tumors. In 2011 this strategy, known as chimeric antigen therapy, or CAR therapy, electrified the cancer research field, and it’s now the subject of numerous clinical trials, particularly in blood cancers.
Accordingly, many pharmaceutical companies that wanted nothing to do with immunotherapy several years ago are now investing heavily.
There’s still lots of uncertainty regarding how many patients will benefit from these therapies, most of which remain experimental—and for which forms of cancer they will work best. Scientists are busy trying to identify biomarkers that might offer answers, and thinking of ways to make treatments more potent. But a new chapter in cancer research and treatment has begun and the journalScience acknowledges this fact by recognizing cancer immunotherapy as the most significant scientific breakthrough of 2013.
The journal’s list of nine other groundbreaking scientific achievements from the past year follows.
CRISPR: This gene-editing technique was discovered in bacteria, but researchers now wield it as a scalpel for surgery on individual genes. Its popularity soared this year as more than a dozen teams of researchers used it to manipulate the genomes of various plant, animal and human cells.
Perovskite Solar Cells: A new generation of solar-cell materials, cheaper and easier to produce than those in traditional silicon cells, garnered plenty of attention this past year. Perovskite cells are not as efficient as commercial solar cells yet, but they are improving very quickly.
Structural Biology Guides Vaccine Design: This year, researchers used the structure of an antibody to design an immunogen—the main ingredient of a vaccine—for a childhood virus that hospitalizes millions each year. It was the first time that structural biology led to such a powerful tool for fighting disease.
CLARITY: This imaging technique, which renders brain tissue transparent and puts neurons (as well as other brain cells) on full display, changed the way that researchers look at this intricate organ in 2013.
Mini-Organs: Researchers made remarkable progress growing mini human-like “organoids” in vitro this year. These included liver buds, mini-kidneys and tiny brains. Such miniaturized human organs may prove to be much better models of human disease than animals.
Cosmic Rays Traced to Supernova Remnants: Although originally detected 100 years ago, scientists haven’t been sure where the high-energy particles from outer space known as cosmic rays come from. This year, they finally tied the rays to debris clouds left by supernovae, or exploding stars.
Human Cloned Embryos: Researchers were able to derive stem cells from cloned human embryos this year after realizing that caffeine plays an important role in the process, stabilizing key molecules in delicate human egg cells.
Our Microbes, Our Health: Research on the trillions of bacterial cells that call the human body home made it clear how much these microbes do for us. “Personalized” medicine will need to take these microbial tenants into account in order to be effective.
Contacts and sources:
Natasha Pinol
American Association for the Advancement of Science
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also like the science of spraying nano particles of anything they want from nano robots to viruses to aluminum to chinese feces out the rear end of jetliners that form trails from horizon to horizon an no-one notices..
i like that science..
Scientists are involved in trying to solve the problems that mankind has created in the first place. For example, cancer was a very rare disease a generation ago, but today it is rampant in modern industrialized societies. Why? It couldn’t be because of all the nuclear testing above ground, underground, or in the ocean, now could it? It couldn’t be because of the tons of chemicals and pollution being generated by the industrialized nations, now could it? It couldn’t be because of all the nuclear power plants that have been built, some of which have exploded and released radioactive particulates, now could it? It couldn’t be because of the use of depleted uranium munitions, now could it? The acceleration of the problems that humanity now faces are a direct result of humanities past and present scientific and technological developments and innovations! Its a bottomless pit!
Scientists are involved in trying to solve the problems of mankind which are the direct result of scientific and technological developments?
Talk about giving the keys to the inmates.
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Your stories are consistently good, accurate, and informative. Kudos.