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Stem cell findings may offer answers for some bladder defects and disease
Date:3/21/2014

(SACRAMENTO, Calif.) For the first time, scientists have succeeded in coaxing laboratory cultures of human stem cells to develop into the specialized, unique cells needed to repair a patient's defective or diseased bladder.

The breakthrough, developed at the UC Davis Institute for Regenerative Cures and published today in the scientific journal Stem Cells Translational Medicine, is significant because it provides a pathway to regenerate replacement bladder tissue for patients whose bladders are too small or do not function properly, such as children with spina bifida and adults with spinal cord injuries or bladder cancer.

"Our goal is to use human stem cells to regenerate tissue in the lab that can be transplanted into patients to augment or replace their malfunctioning bladders," said Eric Kurzrock, professor and chief of the division of pediatric urologic surgery at UC Davis Children's Hospital and lead scientist of the study, which is titled "Induction of Human Embryonic and Induced Pluripotent Stem Cells into Urothelium."

To develop the bladder cells, Kurzrock and his UC Davis colleagues investigated two categories of human stem cells. In their key experiments, they used induced pluripotent stem cells (iPS cells), which were derived from lab cultures of human skin cells and umbilical blood cells that had been genetically reprogrammed to convert to an embryonic stem cell-like state.

If additional research demonstrates that grafts of bladder tissue grown from human stem cells will be safe and effective for patient care, Kurzrock said that the source of the grafts would be iPS cells derived from a patient's own skin or umbilical cord blood cells. This type of tissue would be optimal, he said, because it lowers the risk of immunological rejection that typifies most transplants.

In their investigation, Kurzrock and his colleagues developed a protocol to prod the pluripotent cells into becoming bladder cel
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Contact: Charles Casey
charles.casey@ucdmc.ucdavis.edu
916-734-9048
University of California - Davis Health System
Source:Eurekalert

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