PORTLAND, Ore. - For the first time, scientists have confirmed the long-standing hypothesis that as people age, they accumulate gene mutations in their mitochondria -- cells' energy source.
A team led by Shoukhrat Mitalipov, Ph.D., director of the Center for Embryonic Cell and Gene Therapy at Oregon Health & Science University, has discovered that induced pluripotent stem, or iPS, cells, a type of stem cell derived from patients' skin or blood cells contain faulty mitochondrial DNA. The study was published today in the journal Cell Stem Cell.