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Displaying 175 of 2889 articles.

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 ...

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 ...

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...

Parasites reveal how evolution has molded an ancient nuclear structure

Long before animals evolved from sponges, and before plants evolved out of algae, there was a pivotal event that allowed complex, multicellular organisms to arise: the development of the nucleus in single-celled organisms. Eukaryotes, one of the three main branches of living organisms, are define...

Awards, arrivals, and promotions

Congratulations to our latest award winners: Cori Bargmann has won the 2016 Edward M. Scolnick Prize in Neuroscience, an award given by the McGovern Institute for Brain Research at MIT to recognize outstanding advances in the field. She is being honored for her work on the genetic and neural mech...

A virus common among livestock depends on a microRNA to replicate

In the ongoing arms race between pathogenic viruses and the cells they infect, each side needs every advantage it can get. One way wily viruses can get a leg up is by subverting the microRNAs (miRNAs) of their host. These miRNAs are small stretches of RNA made by host cells to regulate gene expre...

Luciano Marraffini, among the first scientists to plumb the workings of the CRISPR-Cas system, is promoted to associate professor

by Diana Gitig, science writer Rockefeller University microbiologist Luciano Marraffini, head of the Laboratory of Bacteriology, has been promoted to associate professor. He studies the CRISPR-Cas system, which is part of an immune response that bacteria and some other microbes use to defend...

New research clarifies how stem cells get activated to produce new hair—and what happens when their regenerative powers wear out

Adult stem cells provide the body with a reservoir from which damaged or used up tissues can be replenished. In organs like the intestines and skin, which need constant rejuvenating, these stem cells are dividing frequently. But in other body structures, including the hair follicles, they are hel...

Luciano Marraffini, among the first scientists to plumb the workings of the CRISPR-Cas system, is promoted to associate professor

Rockefeller University microbiologist Luciano Marraffini, head of the Laboratory of Bacteriology, has been promoted to associate professor. He studies the CRISPR-Cas system, which is part of an immune response bacteria and some other microbes use to defend themselves against viruses known as phag...

Awards, arrivals, and promotions

Congratulations to our latest award winners: Jean-Laurent Casanova has been recognized with the Stanley J. Korsmeyer Award for his work investigating the genetic basis of pediatric infectious diseases. The award is given by the American Society for Clinical Investigation, an honor society of phys...