Article View: sci.life-extension
Article #356Re: Mitochondrial intervention
From: Magnus Lynch
Date: Wed, 23 Feb 2000 00:00
Date: Wed, 23 Feb 2000 00:00
50 lines
2716 bytes
2716 bytes
I meant that a number of repeats of the telomeric sequence TTAGGG should be incorparated into the circular mitochondrial genome. Magnus rjk3 wrote: > > Aubrey de Grey is far better qualified than I to answer this, but I have > one observation: mitochondrial genes are circular. This implies they > do not have ends, hence no telomeres to play with. Or did I miss > something? > > Any further work with the P66 gene knockout mice that reduced apoptosis > and extend life in rodents? > > In article <38B40E08.A8B475D4@cam.ac.uk>, > Magnus Lynch <mdl24@cam.ac.uk> wrote: > > It is thought that mitochondrial mutations caused by oxidative damage > to > > the mitochondrial genome are an important mechanism of aging. It is > > proposed that certain of these mutations reduce the rate of free > radical > > production giving that mitochondrium a survival advantage within the > > cell. Selection subsequently causes the mutant mitochondrial genome to > > become the predominant species within that cell. [de Grey, A.D.N.J. > > BioEssays 19,161]. An intervention which has been proposed to test > this > > theory is to encode the mitochondrial genes in the nuclear genome and > > transport them into the mitochonrium. This will be extremely > informative > > but still requires significant work. > > > > It has been demonstrated that telomeric sequences preferentially > > accumulate oxidative damage [Exp Cell Res, 1998 Feb, 239:1, 152-60]. I > > propose that telomeric sequences be incorporated in a mitochondrial > > genome and that this might slow the accumulation of mutations in > coding > > regions of the genome. Although this intervention would not be as > useful > > as the one discussed above, it has the advantage of being simple to > > implement in the immediate future. > > > > Does anybody think that this intervention would have any effect? Am I > > correct in thinking that it would be simple to implement? > > > > Magnus > > > > Sent via Deja.com http://www.deja.com/ > Before you buy.
Technical Details
Message-ID:
<38B41D94.FB49D5B9@cam.ac.uk>Path:
arc1-ca.pugleaf.net!unknown!not-for-mailReferences:
<38B40E08.A8B475D4@cam.ac.uk> <8914fg$3db$1@nnrp1.deja.com>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f8921,6adc92572b43ba5b X-Google-Attributes: gidf8921,public X-Google-Thread: 113bb3,6adc92572b43ba5b X-Google-Attributes: gid113bb3,public From: Magnus Lynch <mdl24@cam.ac.uk> Subject: Re: Mitochondrial intervention Date: 2000/02/23 Message-ID: <38B41D94.FB49D5B9@cam.ac.uk> X-Deja-AN: 588919509 Content-Transfer-Encoding: 7bit References: <38B40E08.A8B475D4@cam.ac.uk> <8914fg$3db$1@nnrp1.deja.com> X-Accept-Language: en Content-Type: text/plain; charset=us-ascii Organization: University of Cambridge, England Mime-Version: 1.0 Newsgroups: sci.life-extension,bionet.molbio.ageing