A team of Rutgers scientists, including Leonard Lee and Shaohua Li, have taken an important step toward the goal of making diseased hearts heal themselves — a new model that would reduce the need for bypass surgery, heart transplants or artificial pumping devices.
Scientists have discovered the signals that determine the fate of immature cells in the pancreas. The research shows that they are very mobile and that their destiny is strongly influenced by their immediate environment. This breakthrough published in the journal Nature will facilitate the manufacturing of pancreatic islet cells from stem cells and might help combating type 1 diabetes. Prof. Dr. Henrik Semb who led the study recently joined Helmholtz Zentrum München.
A material based on a natural product of bones and citrus fruit, called citrate, provides the extra energy that stem cells need to form new bone tissue, according to a team of Penn State bioengineers. Their new understanding of the mechanism that allows citrate to aid in bone regeneration will help the researchers develop slow-release, biodegradable, citrate-releasing scaffolds to act as bone-growth templates to speed up healing in the body.
Scientists hoping to develop better treatments for kidney disease have turned their attention to growing clusters of kidney cells in the lab. One day, so-called organoids — grown from human stem cells — may help repair damaged kidneys in people or be used to test drugs developed to fight kidney disease.
Researchers have developed a way to grow human heart tissue that can serve as a model for the upper chambers of the heart, known as the atria. The tissue, derived from human induced pluripotent stem cells (hiPCSs), beats, expresses genes, and responds to drugs in a manner similar to a real human atrium. The model, described November 8 in the journal Stem Cell Reports, may be useful for evaluating disease mechanisms and drugs for atrial fibrillation — the most common type of arrhythmia.
Patients with blood cancers such as leukemia and lymphoma are often treated by irradiating their bone marrow to destroy the diseased cells. After the treatment, patients are vulnerable to infection and fatigue until new blood cells grow back.
A research group led by scientists from Showa University and the RIKEN Center for Biosystems Dynamics Research in Japan have, for the first time, succeeded in growing three-dimensional salivary gland tissue that, when implanted into mice, produced saliva like normal glands.
A technique using umbilical cord blood stem cells could be a promising new approach for repair of cleft palate in infants, reports a paper in The Journal of Craniofacial Surgery, published in the Lippincott portfolio by Wolters Kluwer.
Two recent studies in the journal Leukemia present a new approach for bone marrow donation and transplant that preclinical laboratory tests suggest could make the life-saving procedure safer and more effective for patients.
Sometimes kids trip and fall, and their teeth take the hit. Nearly half of children suffer some injury to a tooth during childhood. When that trauma affects an immature permanent tooth, it can hinder blood supply and root development, resulting in what is essentially a “dead” tooth.