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What are telomeres?
Like the rest of a chromosome and its genes, telomeres are sequences of DNA - chains of chemical code. Like other DNA, they are made of four nucleic acid bases: G for guanine, A for adenine, T for thymine and C for cytosine.
Telomeres are made of repeating sequences of TTAGGG on one strand of DNA bound to AATCCC on the other strand. Thus, one section of telomere is a "repeat" made of six "base pairs."
In human blood cells, the length of telomeres ranges from 8,000 base pairs at birth to 3,000 base pairs as people age and as low as 1,500 in elderly people. (An entire chromosome has about 150 million base pairs.) Each time a cell divides, an average person loses 30 to 200 base pairs from the ends of that cell's telomeres.
Cells normally can divide only about 50 to 70 times, with telomeres getting progressively shorter until the cells become senescent, die or sustain genetic damage that can cause cancer.
Telomeres do not shorten with age in tissues such as heart muscle in which cells do not continually divide.
Originally posted by Bedlam
Artificially lengthening telomeres in cell cultures didn't automatically lead to cancer, it was sort of interesting.
Probably part of a life extension fix, but by itself, no.
Originally posted by SaturnFX
So ya..the limit would possibly be extended, but its not like we would benefit from it overall due to it not actually slowing down the decaying process life tends to give.
Can you imagine what a 400 year old person would look like...without of course any benefit of slowing aging down...raisin comes to mind.
Originally posted by unityemissions
reply to post by Bedlam
Mutations accumulate, and the ability for cell death diminishes over time. Eventually cancer is the result.
That some people live to be over 100 and die without cancer means nothing.
You're using things as they are now to extrapolate on a hypothetical that transcends it.
Makes no sense.