A USC-led team of scientists has made a drool-worthy discovery about how tendons and salivary glands develop in the jaw. Their results are published in a new study in Developmental Cell. In order for our jaws to function, they require not only a precisely patterned skeleton, but also tendons that connect the jaw skeleton to Read More…

Five-hundred million years ago, it was relatively safe to go back in the water. That’s because creatures of the deep had not yet evolved jaws. In a new pair of studies in eLife and Development, scientists reveal clues about the origin of this thrilling evolutionary innovation in vertebrates. In the studies, Mathi Thiruppathy from Gage Read More…

When Natasha Raj-Derouin (née Natarajan) was doing her medical school rotations at Columbia University in New York City, she was thrilled to find a subspecialty that incorporated some of the lessons she had learned in the master’s program in stem cell biology and regenerative medicine at USC. “What’s been really great is that there is Read More…

Cranial neural crests cells, or CNCCs, contribute to many more body parts than their humble name suggests. These remarkable stem cells not only form most of the skull and facial skeleton in all vertebrates ranging from fish to humans, but also can generate everything from gills to the cornea. To understand this versatility, scientists from Read More…

Rapid technological development in the past decade has allowed scientists to generate more data than ever before. At the same time, increased calls for transparency, reproducibility and data sharing in the scientific community have made it increasingly important to store data for posterity — and to serve as a springboard for future discoveries. Enter the Read More…

Contrary to the popular song, the neck bone is actually connected to one of 22 separate head bones that make up the human skull. These plate-like bones intersect at specialized joints called sutures, which normally allow the skull to expand as the brain grows, but are absent in children with a birth defect called craniosynostosis. Read More…

“Stunning advances such as CRISPR-based molecular scissors, for which the Nobel Prize in chemistry was just awarded, allow us to precisely change genes, and designer chemicals can silence particular genes. In a recent study from our group published in Nature, however, we find that these tools are still far from perfect,” writes Gage Crump in Read More…

A new USC-led study suggests a change to the developmental — and evolutionary — story of the pituitary gland. The pea-sized gland, nestled at the base of the brain, produces hormones that drive growth, aggression, sexual development and reproduction. For decades, the front lobe of the pituitary — where the hormones are made — was Read More…

The same stem cells that heal broken bones can also generate arthritic bone spurs called osteophytes, according to a new study in the Annals of Rheumatic Diseases. “Although these stem and progenitor cells promote healthy bone repair in other contexts, they are inappropriately activated to cause a pathological bony protuberance in the context of arthritis,” Read More…

The emergence of jaws in primitive fish allowed vertebrates to become top predators. What is less appreciated is another evolutionary innovation that may have been just as important for the success of early vertebrates: the formation of covers to protect and pump water over the gills. In a new study published in the Proceedings of Read More…