I mentioned this research into the PASG gene last week: EurekAlert now has a little more on the subject. Altering the gene causes premature aging in cells and animals, implying that this gene controls part of the natural regeneration process. Another puzzle piece is now available for scientists trying to understand the mechanics of aging. As is the case for many other discoveries related to premature aging and cell death, this will be tested as a cancer therapy. If researchers can find a way to alter PASG genes in cancer cells (and not in healthy cells), it should make an effective treatment. As a doctor once told me, killing cancer is easy - but doing it without killing the patient is very difficult.