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Researchers Find Master Skin Gene Posted: April 6, 2009 page 2
of 3 Skin is actually the largest organ in the human body and
has important functions in protecting people from infection,
toxins, microbes and solar radiation. But it's not static—skin
cells are constantly dying and being replaced by new cells, to
the extent that human skin actually renews its surface layers
every three to four weeks. Wrinkles, in fact, are a reflection
of slower skin regeneration that occurs naturally with aging.
Major advances have been made in recent years in understanding
how skin develops in space and time, and in recent breakthroughs
scientists learned how to re-program adult skin cells into
embryonic stem cells. "When you think about therapies for skin
disease or to address the effects of skin aging, basically
you're trying to find ways to modulate the genetic network
within cells and make sure they are doi