» http://www.dw-world.de/dw/article/0,2144,2648728,00.html
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» I bet this is going to be on the market sooner than hm …
Stem cells are undifferentiated. They can become any type of cell, and they just haven’t decided what kind to be yet. Its kind of like a college student that hasn’t declared a major yet.
If you surround stem cells with a specific type of cell, they will differentiate and become like the surrounding cells. For example, if you inject stem cells into damaged heart tissue, they will become heart tissue cells and take the place of the damaged area.
The article here talks about combating viruses. Basically, viruses are little shuttles with a tiny strand of DNA or RNA inside it. The shuttle lands on a healthy cell and injects its genetic material into the cell. This genetic material is carried to the cell’s own DNA and added to it. Thus, the virus has taken over this cell and this cell will do whatever the virus tells it to do. The cell grows and multiplies, creating more contaminated cells.
The technique they are proposing to use to fight the virus is recombinant DNA. They create a little snippet of DNA or RNA, and teach the body how to seek and destroy this strand. The scientists here have found (or plan to isolate) a genetic trait in the material of AIDS infected cells that is unique from the rest of the body’s cells. They will make recombinant RNA that matches this strand and have the body go after it.
In this situation, the stem cells will most likely be used to ensure that the AIDS-unique genetic strands are not in conflict with any of the other naturally occurring DNA with in the body. It is possible that they will also use the stem cells as a delivery vehicle for the recombinant DNA. Or, like benji suggests, they can have the recombinant DNA transported through friendly viruses, which is the typical delivery method.
This use of stem cells is completely different from hair multiplication efforts. And yes, this AIDS treatment or a variation of it will appear on the scene before HM because it is a technique that has been used before in other applications. But like benji says, the virus can mutate so this will be a treatment, not a cure. Yes – this is the technique proposed for removing other bad genes, once they are identified.
Note: gay AND straight people have the free will to engage in or decline unprotected casual sex. The majority of the gay people I know are in monogamous relationships.