Archive for stem cells
New research paves the way to a better understanding of telomeres
Much the way the caps on the ends of a shoelace prevent it from fraying, telomeres — regions of repetitive DNA sequences and a protein structure — protect the tips of chromosomes from damage. Every time our cells divide, telomeres lose a bit of that DNA. Eventually, telomeres become so short that they can no ... Read More about New research paves the way to a better understanding of telomeres
AI-designed proteins open doors to new immunotherapies
Artificial intelligence (AI) is increasingly helping drive advances in science and medicine — including cellular signaling. In a recent study, published in Cell, a team of Boston Children’s researchers used groundbreaking AI-based protein design technologies to generate large numbers of immune cells — specifically T cells — in the laboratory and to enhance immune responses ... Read More about AI-designed proteins open doors to new immunotherapies
A new druggable cancer target: RNA-binding proteins on the cell surface
In 2021, research led by Ryan Flynn, MD, PhD, and his mentor, Nobel laureate Carolyn Bertozzi, PhD, opened a new chapter in biology, characterizing a new kind of player on the cell surface: glycoRNAs. Extending this discovery recently in Cell, Flynn and colleagues showed that glycoRNAs form highly organized clusters with RNA-binding proteins on the ... Read More about A new druggable cancer target: RNA-binding proteins on the cell surface
Blood across our lifetimes: An age-specific ‘atlas’ tells a dynamic story
The stem cells that form our blood, also known as hematopoietic stem cells (HSCs), are with us throughout our lives. A new study reveals how HSCs ramp up and pivot their activities depending on the body’s needs at the time, from before we’re born until old age. Researchers at Dana-Farber/Boston Children’s Cancer and Blood Disorders ... Read More about Blood across our lifetimes: An age-specific ‘atlas’ tells a dynamic story
Curbing blood cancers by teaching immune cells to kill mutant stem cells
Blood stem cells, which give rise to all of our blood cell types, undergo a quality assurance process after they’re born. As the lab of Leonard Zon, MD, director of the Stem Cell Research program at Boston Children’s, has documented, immune cells known as macrophages interact with each newly born cell. They engulf and eat ... Read More about Curbing blood cancers by teaching immune cells to kill mutant stem cells
Mitochondrial transfer restores heart muscle — but how?
Transferring mitochondria from a patient’s healthy skeletal muscle to damaged, ischemic heart tissue has been shown to restore heart muscle, increase energy production, and improve ventricular function. After pioneering preclinical work by James McCully, PhD, at Boston Children’s Hospital about a decade ago, cardiac surgeons led by Sitaram Emani, MD, have been testing it as ... Read More about Mitochondrial transfer restores heart muscle — but how?
Microvillus inclusion disease: From organoids to new treatments
Microvillus inclusion disease (MVID) is a rare type of congenital enteropathy in infants that causes devastating diarrhea and an inability to absorb food. Infants can lose liters of fluid a day, become severely dehydrated, and stop growing. There is no specific treatment. “Until about 10 years ago, 50 percent of kids with MVID would die ... Read More about Microvillus inclusion disease: From organoids to new treatments
Perfecting the craft of modeling disease in stem cells: Dosh Whye
Part of an ongoing series profiling researchers at Boston Children’s Hospital. Dosh Whye has always wanted to make peoples’ lives better, but he never imagined that tending to stem cells in a lab seven days a week would be the way he would do it. Now, as an assistant director of the Human Neuron Core ... Read More about Perfecting the craft of modeling disease in stem cells: Dosh Whye
Could we make blood anywhere in the body?
Our bodies make blood in a specialized niche — a “nursery” within our bone marrow that nurtures blood stem cells so they can replicate and make different kinds of blood cells. The lab of Leonard Zon, MD, has even shown how blood stem cells, once they settle in the niche, are “cuddled” by nearby cells. ... Read More about Could we make blood anywhere in the body?
Conquering a rare metabolic condition: A family, a pediatrician, and two labs join forces
As a newborn, Sam Hoffman never cried or made a sound. His mother, Carolyn, often had to wake him up to feed him. He missed many of his infant milestones. At one visit, his pediatrician tapped his leg and couldn’t get a reflex. A urine test found extremely high levels of 4-hydrobutyric acid or GHB ... Read More about Conquering a rare metabolic condition: A family, a pediatrician, and two labs join forces