Stuuuuuuu wrote:
I'm all for stem cell research, but I think that it may be over-hyped. I might be talking about something different here, but clones like Dolly the sheep came from stem cells right? If so, I know that these artificial cells develop and break down at a much quicker rate than the natural ones. So it seems possible to me, making a few jumps in logic, that someone with say cancer could get better with stem cell treatments, then redevelop the disease later. Am I totally off the mark in thinking this?
Yeah, kind of off the mark, but understandable.
I was going to sum it up for you, but i'll let a wikiquote do it instead. Regarding dolly:
"This used the technique of somatic cell nuclear transfer, where the cell nucleus from an adult cell is transferred into an unfertilised oocyte (developing egg cell) that has had its nucleus removed. The hybrid cell is then stimulated to divide by an electric shock, and when it develops into a blastocyst it is implanted in a surrogate mother."
So, with cloning, you're using established cells to create a copy of what you've already got. With Stem cells, you're using cells which havent become anything yet, they are totipotent, meaning they can BECOME any type of cell found in the human body. There are a zillion more differences between the two...but I dont think either of us want to turn this into some sort of molecular biology lecture.
In short, i've not read of anything indicating that the short lived nature of animal cloning will be a concern with stem cell regeneration in humans. But of course, we are at the very first steps of testing in humans, there are bound to be roadblocks to get past. I'm guessing we dont have the first clue as to what the real hurdles will be.