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Researchers successfully map fountain of youth
Date:3/27/2013

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Telomeres a cellular 'multi-ride ticket'

The human body consists of 50,000,000,000,000 or fifty trillion cells, and each cell has 46 chromosomes which are the structures in the nucleus containing our hereditary material, the DNA. The ends of all chromosomes are protected by so-called telomeres. The telomeres serve to protect the chromosomes in much the same way as the plastic sheath on the end of a shoelace. But each time a cell divides, the telomeres become a little bit shorter and eventually end up being too short to protect the chromosomes.

Popularly speaking, each cell has a multi-ride ticket, and each time the cell divides, the telomeres (the chromosome ends) will use up one ride. Once there are no more rides left, the cell will not divide any more, and will, so to speak, retire. But some special cells in the body can activate telomerase, which again can elongate the telomeres.

Sex cells, or other stem cells which must be able to divide more than normal cells, have this feature. Unfortunately, cancer cells have discovered the trick, and it is known that they also produce telomerase and thus keep themselves artificially young. The telomerase gene therefore plays an important role in cancer biology, and it is precisely by identifying cancer genes that the researchers imagine that you can improve the identification rate and the treatment.

"A gene is like a country. As you map it, you can see what is going on in the various cities. One of the cities in what could be called Telomerase Land determines whether you develop breast cancer or ovarian cancer, while other parts of the gene determine the length of the telomeres. Mapping telomerase is therefore an important step towards being able to predict the risk of developing different cancers. In summary, our findings are very surprising and point in many directions. But as is the case with all good research, our work provides many answers but leaves even more questions" say
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Contact: Stig E. Bojesen
stig.egil.bojesen@regionh.dk
-45-61-79-71-51
University of Copenhagen
Source:Eurekalert

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