“Latest Stem Cells News”

Stem cell researchers have a lot of big dreams, and one is to someday regenerate damaged hearts. That is still many years away from becoming a commercial reality, if ever, but a few University of Washington scientists have formed a new company that hopes to make cells that can replace pacemakers, and someday rebuild damaged heart tissue that people are left with after heart attacks.

The company, Bellevue, WA-based Beat BioTherapeutics, is the brainchild of Chuck Murry and Michael Laflamme, a pair of UW stem cell researchers, and UW bioengineering professor Buddy Ratner. It has roots in about a decade of research, with $20 million of funding from the National Institutes of Health, Ratner says. No venture capitalists have chipped in to carry this work forward through the early phases of development, although the fledgling company has found another way forward through a partnership with the Bellevue, WA-based Hope Heart Institute, that will provide it with services and support, says CEO Stephen Quinn.

The basic concept of BeatBio, as it’s known for short, is a marriage of stem cell biology and biomedical engineering. Murry and Laflamme’s work has at least partly paved the way for the company to reprogram adult skin cells, to give them vast potential to become other types of cells, like those of the heart. BeatBio specifically wants to direct these cells to become cardiac pacemaker cells, and also cardiomyocytes, the cells that make up heart ventricles. Importantly, scientists have shown the cells can be kept proliferating over time in live animals, Ratner says (…)

“Somebody’s got to be crazy enough to take stem cell therapies to the market,” Quinn says.

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All those who have suffered ligament damage could benefit from artificial ligaments built biologically. But, experimentation on artificial ligaments, which could come from stem cells and naturally replace damaged tissue, will not continue. Speaking about the issue was Luigi Ambrosio, one of the researchers of the Institute of Technology of Composite Material of the National Research Council (CNR) in Naples, who contributed to the realization of this biological ligament. Two solutions were proposed by the Neapolitan laboratory.

One solution was to build a biodegradable structure out of hyaluronic acid, one of the components of ligament tissue that repairs or replaces the damaged parts of the ligament. The more efficient result was obtained by building an artificial ligament from adult stem cells, which grow and differentiate into tissue. Despite the good results obtained in animals in lab experiments, human experiments will not be done due to a lack of funds, even if the solution proposed by the CNR in Naples could help maintain a good physical condition for a longer time.

The alternative today is to replace damaged ligaments with ligaments from other parts of the body or replacing the damaged tissue with artificial materials, mainly polymers that mimic their structure. However, these techniques, chosen mainly for athletes who must recover quickly, can create long-term problems. As Ambrosio said, “various structures, especially polymers, have been constructed, but none have given the results hoped for and have almost all been abandoned. The material developed by our laboratories,” concluded the researcher “could help people overcome problems with an important improvement in the quality of life and a reduction in costs for the patient”.

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