Chris Hamilton
11-08-2007, 03:03 AM
DNA may take damaged parts to other parts of the cells to repair them as this study may show:
http://science.nasa.gov/headlines/y2007/07nov_repairshops.htm
"High-speed particles of space radiation zip through an astronaut's body. Occasionally, one of these particles will strike and break a strand of DNA. Because DNA carries a cell's genetic information and directs its behavior, broken DNA can make a cell grow out of control and even lead to cancer.
Fortunately, cells have teams of repair enzymes that try to fix this damage. Scientists have long thought that these enzymes always go to the site of injury and fix the DNA damage in place. But new research by Francis Cucinotta, the Chief Scientist for NASA's Space Radiation Program at the Johnson Space Center, and his colleagues suggests that cells might sometimes move broken DNA to special "repair shops" instead."
http://science.nasa.gov/headlines/y2007/07nov_repairshops.htm
"High-speed particles of space radiation zip through an astronaut's body. Occasionally, one of these particles will strike and break a strand of DNA. Because DNA carries a cell's genetic information and directs its behavior, broken DNA can make a cell grow out of control and even lead to cancer.
Fortunately, cells have teams of repair enzymes that try to fix this damage. Scientists have long thought that these enzymes always go to the site of injury and fix the DNA damage in place. But new research by Francis Cucinotta, the Chief Scientist for NASA's Space Radiation Program at the Johnson Space Center, and his colleagues suggests that cells might sometimes move broken DNA to special "repair shops" instead."