subject: Skin Cells Function In Beating Heart Muscle [print this page] Reported by Reuters, scientists have for the first time succeeded in taking skin cells from patients with heart failure and transforming them into healthy, beating heart tissue that could one day be used to treat the condition.
The researchers, based in Haifa, Israel, said there were still many years of testing and refining ahead. But the results meant they might eventually be able to reprogram patients' cells to repair their own damaged hearts.
"We have shown that it's possible to take skin cells from an elderly patient with advanced heart failure and end up with his own beating cells in a laboratory dish that are healthy and young - the equivalent to the stage of his heart cells when he was just born," said Lior Gepstein from the Technion-Israel Institute of Technology, who led the work.
Heart failure is a debilitating condition in which the heart is unable to pump enough blood around the body. It has become more prevalent in recent decades as advances medical science mean many more people survive heart attacks.
At the moment, people with severe heart failure have to rely on mechanical devices or hope for a transplant.
Researchers have been studying stem cells from various sources for more than a decade, hoping to capitalize on their ability to transform into a wide variety of other kinds of cell to treat a range of health conditions.
What is the reaction of turning skin cells into beating heart muscle? Briefly speaking, they beat together. It is the same case with that transplant a jaw crushers bearing to a dryer machine, its undoubted that neither can work. Gepstein's team took skin cells from two men with heart failure - aged 51 and 61 - and transformed them by adding three genes and then a small molecule called valproic acid to the cell nucleus.
They found that the resulting hiPSCs were able to differentiate to become heart muscle cells, or cardiomyocytes, just as effectively as hiPSCs that had been developed from healthy, young volunteers who acted as controls for the study. Within 24 to 48 hours the two types of tissue were beating together, they said.
In a final step of the study, the new tissue was transplanted into healthy rat hearts and the researchers found it began to establish connections with cells in the host tissue.
