Geneticists Claim Aging Breakthrough 408
Quirk writes "The Science section of The Guardian is reporting on recent experiments by geneticists 'to unlock the secrets of the aging process has created organisms that live six times their usual lifespan, raising hopes that it might be possible to slow ageing in humans.' 'In the experiment, Dr Longo's team took yeast cells and knocked out two key genes, named Sir2 and SCH9. The latter governs the cells' ability to convert nutrients into energy. They found that instead of dying after a week, the cells lived for up to six weeks.''Research has now begun to test whether the effect works in mice.' So it looks like we might soon have near immortal, fearless mice."
We have that already (Score:5, Informative)
Mammals aren't exactly fungi (Score:3, Informative)
Re:We have that already (Score:5, Informative)
* telomerase activity
* insensitivity to apoptosis by either disrupting the proapoptotic signal pathway (Bax, P53, effector-caspase etc) increase the expression of antiapoptotic signals such as Bcl-2
* growth factor independence (ie constitutively active Ras)
* insentivitity to growth inhibitors
* proangiogenetic mutations
Re:Do not go gently into that goodnight.... (Score:2, Informative)
Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light.
Though wise men at their end know dark is right,
Because their words had forked no lightning they
Do not go gentle into that good night.
Good men, the last wave by, crying how bright
Their frail deeds might have danced in a green bay,
Rage, rage against the dying of the light.
Wild men who caught and sang the sun in flight,
And learn, too late, they grieved it on its way,
Do not go gentle into that good night.
Grave men, near death, who see with blinding sight
Blind eyes could blaze like meteors and be gay,
Rage, rage against the dying of the light.
And you, my father, there on that sad height,
Curse, bless, me now with your fierce tears, I pray.
Do not go gentle into that good night.
Rage, rage against the dying of the light.
****
I only italicized from the second & third stanza, but really the entire poem is saying "Those who have 'effed up their lives can't deal with death". This is one of the more misused poems, along with Frost's "The Road Not Taken" (& also, for songs, "Born in the USA" which I've seen in a very patriotic Chevvy commercial).
I guess my point: your reference paints your comment, "I know there will be the crowd that says - but we were designed to die. That is bunk!" in a rather ironic light.
Re:We have that already (Score:1, Informative)
Re:We have that already (Score:5, Informative)
It's astonishing how much genetic material is shared going all the way back to yeast, and how much genetic research is transferable. Yeast is a eukaryote (so, while single-celled, they have a nuclei, unlike bacteria), and though it usually reproduces asexually, it can be made to undergo meiosis and bind half its genetic material with that of a "mate".
Note: I am not a genetic researcher, but I work in the same research facility as some, and am encouraged to understand more or less what they do.
Let's take it a step further (Score:3, Informative)
We could be out of synch with the frame...
CT GAC TGC ATC
C TGA CTG CAT C
But I'm noticing a concern with the GC being present there. It would not be this sequence that is all so important... GC has a tendency to have 5-methyl-cytosines which are deaminated to thymidine. There's no way that strand would last through the generations of mutation in offspring.
Maybe that's why the highlanders are dying out...?
Re:Let's take it a step further (Score:3, Informative)
Regular C deaminates to Uridine, which gets fixed right away. CG sequences tend to get methylated more frequently unless they are in CpG islands in the upstream promotor regions...