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Science News

Scientists find evidence that cancer can arise from changes in the proteins that package DNA

A mutation that affects the proteins that package DNA—without changing the DNA itself—can cause a rare form of cancer, according to new findings in this week’s Science from researchers at Rockefeller University. The mutation is present in histones, the protein scaffolding around which DNA w...
Science News

Antibody therapy opens door to potential new treatment for HIV

The development of antiretroviral therapy, a combination of drugs that slows the replication of HIV in the body, has transformed the treatment of this infection. What was once a certain death sentence is now a chronic condition that people can live with for decades. But this therapy has drawbacks...
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Researchers use new CRISPR-based strategy to replicate disease in cells

To explore in detail how specific genetic errors can lead to disease, scientists need to perform experiments in cells that carry these exact mutations. Now, the ability to create these cellular replicas using new genome editing technology has been facilitated thanks to work by Rockefeller Univers...
Science News

A central clock runs the cell division cycle

Each time a cell divides, it replicates its DNA once, then separates the two copies from each other and splits into two daughter cells. The event is intricately coordinated and was long known to be under the influence of cyclins—an aptly named group of proteins whose levels go up and down as the ...
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New method allows first look at key stage of human development, embryo implantation

Accompanying commentary recommends revisiting current bioethical guidelines in light of advance       Despite significant biomedical advances in recent decades, the very earliest events of human development­—those that occur during a critical window just after fertilization—h...
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An experimental Alzheimer’s drug reverses genetic changes thought to spur the disease

Aging takes its toll on the brain, and the cells of the hippocampus—a brain region with circuitry crucial to learning and memory—are particularly vulnerable to changes that can lead to Alzheimer’s disease or cognitive decline. With the hope of counteracting the changes that can lead to these t...
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Mice engineered with rare kidney disease provide new insights about how cells repair broken DNA

Like jewels in a vault, our precious genetic material is stored in the nucleus of a cell—sequestered away from potentially damaging cellular components and toxins so that no harm can come to it. Yet over the course of a life moving through this world, our DNA does get damaged, and our cells have ...
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A common brain cell shapes the nervous system in unexpected ways

More than half of our brains are made up of glial cells, which wrap around nerve fibers and insulate them—similarly to how the plastic casing of an electric cable insulates the copper wire within—allowing electrical and chemical impulses to travel faster. In the past, neuroscientists considered ...
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A newly discovered way for cells to die

Some cells are meant to live, and some are meant to die. The linker cell of Caenorhabditis elegans, a tiny worm that is a favored model organism for biologists, is among those destined for termination. This cell helps determine the shape of the gonad in male worms—and then it dies, after two days...
Science News

Sweet tooth? Flies have it too—and new research explains how they know what to eat and when to stop

All animals, including humans, love sweet food. But if you’re someone who never turns down dessert under normal circumstances, try wolfing down six donuts as a scientific experiment. Even the moistest, most velvety piece of chocolate cake will seem a lot less appetizing—and you will likely eat l...
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