
In the early nineties, genetically modified crops swam into the public ken. These were crops which were more resistant to disease and had a higher yield than normal crops and at first it seemed like they were ‘a good thing.’ However, as the details of the complicated technology were discussed, doubts arose. These were;
1. The DNA modification of crops, which was equivalent to several generations of the normal breeding process and the possible consequences;
2. The ‘genie in the bottle’; GM crops would cross-pollinate with non-gm crops, so if something went wrong with the gm crop, there would be no way of containing it or going back;
3. Companies claiming intellectual property rights over crops that they had developed and charging for them;
4. Companies developing crops that did not produce seed fit for sowing, so that customers esp in the third world, would have to go back to them to buy more seed;
5. People being unable to choose whether or not they could eat gm food or not.
The media did a blinder on what was a very complex subject, broke it down into simple layman’s terms and forced the issue with governments. The result was that we proceeded a lot more cautiously and hemmed in these companies on selling non-seeding crops to the third world.
How I wish, how I really wish that in the embryology debate that finished on Wednesday night in the Lords, that the media had done the same thing.
I did a post on this subject some months back, but to re-cap, stem cell research holds the ‘golden key’ to curing disease. Stem cells are the cells in the body that repair and replace diseased tissue. A number of these cells (called ‘pluripotent’ cells) can adapt to any area of the body and regrow for example, heart muscle damaged in a heart attack. It is the most promising area for finding cures to such horrors as Parkinsons’, Alzheimers and MS. There are a number of sources for these stem cells, but the two basic groups are embryonic stem cells, which come from foetuses, and adult stem cells, which are present in all of us and can be harvested and grown, (usually from bone marrow). Scientists have been using left-over eggs from IVF clinics for their research, but there are not enough eggs for their research, so the point of this bill is to allow them to create 'hybrid' embryos, using eggs from animals (cows,rabbits and pigs) and human cells. Here are the big issues surrounding the technology.
1.The effiacy (or lack of it) of embryonic technology
All the cures that have come from stem cell research, have come from the adult stem cells, not from embryonic ones. It is looking increasingly likely that things will stay this way. There are three major problems with embryonic stem cells;
1. They are not a perfect match to the patient so the patients body rejects them
2. They are cloned and have genetic defects in them from the cloning process;
3 Embryonic stem cells are not biologically compatible with adult tissue; they produce tumours when they are injected.
2. Intellectual property rights
The big brother of embryonic stem cell research, adult stem cell research, is the area that has actually produced all the wonder cures. Embryonic research has produced none. But the reason that companies want to persist with it , is that with embryonic technology, they can claim patent rights on a medicine developed from it. With adult stem cell cures they cannot, because the stem cells are taken from the patient and therefore belong to the patient.
3. ‘Therapeutic’ cloning
'Therapeutic' is used here, because the stated aim of the research is to grow stem cell lines that can be used to treat people for various diseases, not to actually clone a human being. But it is exactly the same technology and it means that we are building up a bank of experience which could very easily be switched to this use.
4. Crossing the species barrier
In this cloning process, the egg that is being used is from an animal, usually cows, rabbits or pigs, and the cells inserted into the egg are human. This bill allows the creation of cybrids, which is 99% human, to hybrids, which are 50% human. This crossing of the species barrier raises questions about the crossing over of animal diseases to humans, if medicines developed from these stem cell lines are created. At the moment, people who receive neural transplants from medicines developed from pigs have a whole set of restrictions on them; they are past child bearing age, are not allowed to give blood and have to use a condom when they are having sex. Not a whisper of this reached this debate on hybrid embryos.
5.Possible malicious use of embryonic technology
The possibility of full blown cloning and bringing a human embryo to full term, was the spectre that hung over this debate. This was supposedly dealt with in the bill, which forbids the implantation ‘in utero’; into a living being. But there was a flaw in this. The bill did not forbid the implantation of an embryo into an artificial womb. It couldn’t, because the stem cells are obtained by growing them in a laboratory. Scientists in America are developing artificial wombs that are in a different league from a petri dish, and again, this was not mentioned in the debate. And nobody picked up on the fact that doing away with the child’s need for a father, could apply to cloning.
Some might think this wouldn’t happen, but when you have a falling population and a dwindling economy to match like Britain has, or you are short of women as China is, there is certainly a possibility that someone might suggest this as a solution.
So there it is. The debate that never happened, or not in public anyway. Pandora’s Box was opened on Wednesday night, and none of us knew; we were too busy wondering if two clowns on Radio 2 were going to be sacked for making obscene phone calls. I predict that this bill in future will be seen the turning point of the 21st century and we didn't even debate it properly. Now all we can do, is deal with the consequences.
