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Pigs with Human Genes

LGRiske writes "In a step toward creating herds of pigs that could provide organs for transplanting into humans, Italian researchers manipulated swine sperm to make an animal strain that carries human genes in the heart, liver and kidneys."

18 of 283 comments (clear)

  1. rejection ? by Tensor · · Score: 5, Interesting

    AFAIK rejection rates from human-human transplants are quite high, and the search for compatible donors quite hard.

    What did they do to surpass these two ? did they made them 100% compatible with everyone ? are they only compatible with the original human dna-donor for the pigs?

    Should we start saving now to have a pig with our replacement liver (for beer) and heart (fried chicken & ribs) ?

    1. Re:rejection ? by mythr · · Score: 5, Interesting

      The only problem with your argument is that most (not all, but I'm sure a majority, especially in America) heart/liver/lung disease is not genetic. Most of it is caused by consuming things that shouldn't be consumed. (triple bacon cheeseburgers with extra lard, beer and cheap whiskey, and cigarettes, respectively)

      Also, how about people who get in car accidents and have vital organs punctured? This would certainly help them, so I wouldn't completely dismiss its validity.

    2. Re:rejection ? by pyrote · · Score: 2, Interesting

      bacon.....
      Then you'll need a new heart in a few months anyway. Better have a litter...it's gonna be a long cycle.

      --
      THE WORLD IS GOING TO END!!!! eventually.
    3. Re:rejection ? by runderwo · · Score: 2, Interesting

      Or, you could simply maintain a donor pig as a pet, or in the backyard. Then you'd be covered should such a situation arise. :)

    4. Re:rejection ? by the_2nd_coming · · Score: 2, Interesting

      they are doing cool things with bone marrow transplants...it seems that when you do a bone maroww transplant, any organ inside the body that is of other nature than that bodies is identified as part of the body.....in a sence, a bone marow transplant resets the switch that tells the body what is not part of you. only problem...if you regect the bone marow...you die.

      --



      I am the Alpha and the Omega-3
    5. Re:rejection ? by MrFredBloggs · · Score: 3, Interesting

      "The single most important risk factor for heart disease is genetics."

      That would explain why heart disease and obesity are both increasing at a rate that suggests its something other than a fixed percentage of the population. Obesity kills via heart disease - you don't literally die of obesity. What's it running at nowadays - 3000 a day in the US? What was it 50 years ago? Still think its genetic?

    6. Re:rejection ? by mesocyclone · · Score: 3, Interesting

      I didn't say it was the *only* factor, but it is the most significant.

      Furthermore, people are *not* dying of other diseases the way they did in the past. The result is most people will die of either cancer, heart disease or degenerative diseases. Hence your historical comparison is not a good way to look at things.

      --

      The only good weather is bad weather.

  2. Errrrr by Tensor · · Score: 3, Interesting

    If a living being has a human heart, a human liver, and human kidneys ... is it closer to pig or human ? i mean, when do we stop ? wouldnt it be "easier" to just have a replacement human with say, no brain (so its not "really" a clone) living assisted by machines waiting for its parts to be harvested ?

    I am having a kind of matrixy vison rite now, only its humans that own the storage facility.

    Scary

  3. Re:great, we're all doomed by mythr · · Score: 5, Interesting

    4) Pigs are not kosher, and Jewish or Moslems would not be able to benefit from these advances. That's alienting 1/5 of the planet right there from being able to benefit from this.

    If they don't want to benefit, they don't have to. It's not their decision what other people do, though. We don't ban the use of antibiotics for bacterial infections just because a few people might have religious beliefs against them.

    5) We are tampering with God's work. Pigs were created perfect the way they are, as are we. Toying with genes is tampering with God's perfect work and SHOULD not be done under any sane principals.

    We are God's work as well. If He did not want us to do this, he should not have made us capable. That's assuming He exists, but we'll stay away from that argument for today. Also, I don't think you can describe a pig as perfect. They do, as you mentioned earlier, roll around in their own feces.

  4. how close is it? by pyrote · · Score: 3, Interesting

    Question at this point is... having pigs so close to human DNA does it constitute canibalisim if you have bacon at breakfast? let alone the crap McDonalds sells for breakfast...well I guess that may as well be.

    --
    THE WORLD IS GOING TO END!!!! eventually.
  5. Re:great, we're all doomed by Guppy · · Score: 3, Interesting

    Pigs are not kosher, and Jewish or Moslems would not be able to benefit from these advances. That's alienting 1/5 of the planet right there from being able to benefit from this.

    IANAJ (first time I've ever used that particular acronym!), but I believe there is a doctrine which states that the importance of a human life far outweighs any of the kosher requirements -- for instance, it would be okay to eat pork if you were starving and that was the last item of food you had left. I imagine that a pig organ transplant would fall into the same classification.

    As for muslims, IANAM ;), and I don't have a clue to boot.

  6. Potential Cannibalism Concerns... by Bowie+J.+Poag · · Score: 3, Interesting



    So.. Anyone care to wager how long it takes for a clerical error to allow one of these pigs to interbreed with a normal one, and produce offspring that ends up in your hotdog?

    Oink!

    Cheers,

    --
    Bowie J. Poag

  7. Re:Stemcells by guybarr · · Score: 4, Interesting


    I think you're a little confused here:

    cloning == creating an organism with a DNA identical to a source DNA

    transgenics == implanting DNA from one specie to sperm, eggs or fertilized egg from another specie.

    If I read the article correctly they are doing transgenics, not cloning.

    also, the article does not say anything on stem cells.

    You seem to be interested, but not knowledgeable, for a very good basic biology book I recomend Keeton & Gould.

    --
    Working for necessity's mother.
  8. Re:Kosher by guybarr · · Score: 3, Interesting


    Actually it is Kosher, while some disagree Judaism lawers seem to be saying that it is because. 1) surgery is different then eating. 2) The Kosher laws can be suspended when necessary to save

    yes, not only is this allowed by jewish law, it is a great "MITZVA" to save a human life.
    And using pigs will cancel the current moral problems with human-donor transplants (when is the donor considered dead ? i.e. when is taking his vitals is no longer considered murder ? )

    --
    Working for necessity's mother.
  9. Re:Kosher by denttford · · Score: 3, Interesting

    A bit OT, I think, but I wanted to correct a point made in the thread- Actually, there are some cases where things other than eating are prohibited - namely, in the case of mixing milk and meat, cooking and deriving benefit (e.g. selling) are also prohibited.

    However, since this only applies to kosher animals, while you would be forbidden to sell a cheeseburger, selling a cheese BLT would technically be ok. Counter-intuitive, but quite true.

    Anyway, back on topic - clearly the situation would be one of saving a life, in which case, it is not just permissible to use such measures - it would be a requirement (as long at it were the best option: here is the fudge factor - e.g. no one will claim rejecting an operation with a 50% mortality rate is violating anything). That is, Kashrut (Kosher laws) are not suspended for serious medicine, they simply don't apply.

    --

    Leben Sie jetzt die Fragen.
  10. human cloning for organ transplants by g4dget · · Score: 5, Interesting
    wouldnt it be "easier" to just have a replacement human with say, no brain (so its not "really" a clone)

    Probably, although it wouldn't involve machines. One way this might work is as follows. A doctor would take a sample of your DNA and place it into an egg, creating a clone. That egg can be carried by a surrogate mother, or possibly implanted back into you (eggs can develop pretty much anywhere). When the organ that is needed has started to form, the embryo is removed, the developing organ is removed from the embryo, transplanted into you, and the rest of the embryo destroyed. When the transplanted organ has matured, your original defective organ is removed.

    Some organs might need to develop long enough that it becomes a concern whether the developing embryo has some kind of higher brain activity. In that case, the doctor could make sure that the embryo develops without higher brain functions--it would start out ``brain dead'', roughly the same way at which we already harvest organs.

    Where does one draw the line ethically? Hard to say. I find it difficult to see why human cloning should raise significant ethical problems as long as the clone does not develop higher brain functions.

    1. Re:human cloning for organ transplants by g4dget · · Score: 5, Interesting

      This is not intended as a flame, but thefertilized egg/embryo will need the uterus to grow and develop.

      No, it doesn't. A fertilized egg will implant pretty much anywhereit can get a reasonable blood supply. The uterus is mainly there toprotect the mother. Women actually occasionally give birth via cesareansection after ectopic pregnancies, it just is pretty risky.

      Even if carrying to term is very risky, if properly planned, it seems plausiblefor a man to be able to carry a cloned embryo ectopically without too muchrisk. Women, of course, can just use the more usual place to carrytheir own clones.

      An artificial uterus is difficult to make pretty much because an artificialbody is difficult to make. However, it is quite conceivable that anotherresult of genetic modification in pigs or other animals will be that animalscan carry human babies, with all sorts of interesting implications for humanevolution (no constraints on human head size anymore, for example, and allsorts of complicated constraints on human female evolution removed as well).

  11. Why not blood? by Mysticalfruit · · Score: 3, Interesting

    I think they should create a pig that creates O+ and every other type human compatible blood. Then we could have farms of blood donor pigs. The red cross could setup this ultra sterile facility just for harvesting blood.

    As for the organs, I think this is a great step forward in being able to save peoples lives. However, my preferred method would be to grow cloned organs in vats. I think it would be cool if you could pay a company and they would take a blood sample from you and make a whole bunch of organs and put them in the deep freeze so when you need them, all the doctor has todo is make a phone call and ta-da, a copy of your existing heart shows up in 3 hours.

    In a more far fetched idea...keeping with the idea that you could in the future transfer your brain to a computer, you could start cloning a copy of yourself and when the clones ready, transfer your essence into the new body! Though, how you could go the other direction really isn't clear.

    --
    Yes Francis, the world has gone crazy.