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Insoo Hyun, PhD, associate professor of bioethics, urges such research to proceed only after "knowing the right and wrong ways to treat sentient beings according to complexities of their attributes." Hyun's recommendations appear in the journal's September 15th issue and come a week after the National Institutes of Health closed a month-long public comment period on proposed new regulations, widely expected to be adopted, that would lift a moratorium that currently forbids federal funding for chimera embryo research. For decades, research has taken place on animal-human chimeras (after a Greek mythological figure with the head of a lion, the body of a goat, and the tail of a serpent), without much controversy in the United States, such as in the case of mice transplanted with human cancer cells. However, concerns have arisen about research using human pluripotent stem cells, the focus of the current NIH moratorium. These cells are made from skin or blood cells ...

Three-D bioengineered lung-like tissue (left) resembles grownup human lung (proper). Credit score: UCLA Broad Stem Cell Analysis Heart By coating tiny gel beads with lung-derived stem cells after which permitting them to self-assemble into the shapes of the air sacs present in human lungs, researchers on the Eli and Edythe Broad Heart of Regenerative Medication and Stem Cell Analysis at UCLA have succeeded in creating three-dimensional lung "organoids." The laboratory-grown lung-like tissue can be utilized to review ailments together with idiopathic pulmonary fibrosis, which has historically been tough to review utilizing typical strategies. "Whereas we've not constructed a totally practical lung, we have been in a position to take lung cells and place them within the appropriate geometrical spacing and sample to imitate a human l...

"We wanted to determine the relationships between key genetic alterations and how head and neck cancer stem cells harness those alterations to drive initiation and growth," says CU Cancer Center investigator Antonio Jimeno, MD, PhD, the Daniel and Janet Mordecai endowed professor for cancer stem cell research, director of the University of Colorado School of Medicine's Head and Neck Cancer Clinical Research Program, and the paper's senior author. The current project was performed in collaboration with the Gates Center for Regenerative Medicine of which Dr. Jimeno is a faculty member. Jimeno started his work with cancer stem cells as a post-doc at Johns Hopkins University, but as he explains, "I focused on head and neck cancer stem cells because there has been an increase in head and neck cancer incidence of about fifty percent over the past ten years in the U.S. and we need to better understand what is at the root of this disease ." Previously, a major c...