Brain disorders have not yet profited from advances in precision medicine to the same extent that other disorders have. With the advent of magnetic resonance imaging and other technologies, watching the brain at work has made great strides in recent decades. But those data have often been shoehorned into the categories of the Diagnostic and Statistical Manual of Mental Disorders. Researchers are working to bring diagnostic categories in line with a modern understanding the brain.
Although targeted therapies are prescribed on the basis of a patient's molecular makeup, they do not work every time. And in those instances where they do work, they basically stop working every time. In response, researchers have developed a number of systems whose goal it is to predict which drugs will be effective for an individual patients.
Separate research groups have reported new insights into the process of neurogenesis during development and adulthood, respectively. Their papers appeared in the July 6, 2021, online issue of Cell Reports.
LONDON – New guidelines for stem cell research open the door to extending the legal limit on human embryo research beyond the current 14-day maximum set down 40 years ago.
LONDON – New guidelines for stem cell research open the door to extending the legal limit on human embryo research beyond the current 14-day maximum set down 40 years ago. In revised guidelines, the International Society for Stem Cell Research (ISSCR) has moved research on human embryos from category 3, which explicitly bans their study in culture post 14 days in any circumstances, to category 2B, in which research post 14 days would be permissible if there is a clear scientific rationale – and after a thorough specialized review.
LONDON – The alchemy of induced pluripotent cells has broken another barrier, delivering a model of the earliest preimplantation stages of human development, when fertilized eggs form a blastocyst.
Organoids grown from cholangiocytes – the epithelial cells of the bile duct – are poised to be used in ex vivo cell therapy to increase the number of donated livers that are suitable for transplant, and also for direct bile duct repairs. The organoids have been shown to be effective in correcting defects in mouse models and in perfused donated livers. They are now being tested in large animal models.
Organoids grown from cholangiocytes – the epithelial cells of the bile duct – are poised to be used in ex vivo cell therapy to increase the number of donated livers that are suitable for transplant, and also for direct bile duct repairs.
Researchers at Hannover Medical School have developed an organoid that mimicked the early codevelopment of the heart with liver, lung and blood vessels.
