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Displaying 170 of 2850 articles.

A mechanism shared by healing wounds and growing tumors

Scientists have long seen parallels between healing wounds and growing tumors. In studying the molecular changes that occur within both, a research team has discovered a new cancer-fuelling mechanism that potentially could inform drug development.

Shooting the messenger: how one protein allows germ cells to develop

Researchers have identified a molecule that guides the formation of eggs and sperm by preventing a host of factors related to cell death and inflammation from killing the precursors to these cells. Their findings reveal new knowledge about how a mutation in this molecule leads to male sterility.

Viral fossils reveal how our ancestors eliminated an ancient infection

Some viruses can insert their genetic material into the genome of their host, creating a genetic fossil record. Researchers have uncovered how our ancestors may have wiped out one such virus around 11 million years ago.

Scientists discover how crucial DNA sequences endure

The centromere region of chromosomes retains the same DNA from one generation to the next. Scientists have gained new insights into how it avoids being scrambled in normal cells, and how it becomes unstable in cancer.

Study identifies “night owl” gene variant

Scientists have discovered a common mutation that might explain why some people have trouble going to sleep at night and getting up early. The gene alteration slows the internal biological clock that regulates our sleeping patterns.

For microbes fighting viruses, a fast response means a better defense

Researchers have found that the bacterial immune system targets an invading virus as soon as it enters the cell. This discovery answers a long-standing question about how microbes defend themselves.

For biologists studying tiny worms, new technologies make big improvements

Two new technologies are helping scientists understand new aspects of organ and nervous system development in C. elegans. One allows them to image worms developing in a natural environment, while the other makes it possible to track single neurons as the worms grow.

Early intervention with new treatment provides durable control of HIV-like virus in monkeys

There are more than 25 drugs to control HIV, yet the virus remains one of the world’s biggest health problems. One of the many challenges with existing therapies is that a dormant version of the virus is always lurking in the background, ready to attack the immune system as soon as treatment is i...

A new way to reset gene expression in cancer cells shows promise for leukemia treatment

New findings from Rockefeller University researchers could guide the development of potent combination therapies that deliver more effective and durable treatment of leukemia. In recent work published in Nature, they show it’s possible to deactivate cellular programs involved in tumor growth by d...

Scientists discover an unexpected influence on dividing stem cells’ fate

When most cells divide, they simply make more of themselves. But stem cells, which are responsible for repairing or making new tissue, have a choice: They can generate more stem cells or differentiate into skin cells, liver cells, or virtually any of the body’s specialized cell types. As r...