INTRODUCTION:
Many labs are still moving forward with their work with the helpful aid of recent advances in stem cell biology as well as gene editing techniques. They make it possible to genetically engineer pigs and sheep which are not able to develop their own specific tissues and organs. The goal of these experiments is to inject human stem cells into embryos of animals and allow the stem cells to grow into the missing organ which can then be harvested. Not only does this new research provide hope and possibly life for many who are on organ donor lists, but it could possibly put an end to the black market of organ 'donations'. Many people involved in the black market arena, usually in poverty stricken areas, take human lives and use the organs to make a profit. More often times than not, people pay tremendous amounts of money for these organs so that they will have a chance at living. The ethical and moral controversy and tension is still very strong. (A)
Because this is just the very beginning of research
around the idea of creating human animal hybrids to harvest organs for patients
on organ donor lists these experiments are not for growing human organs just
yet. They are used to create methods for a means towards an end. In September of 2015, the National
Institutes of Health refused to fund such studies until they were able to
better inspect the science of these studies more closely. (A) Meanwhile, in Britan, scientists created over 150 human animal hybrid embryos in secrecy for three years. They did so for the many wide range of diseases affecting people world wide. What happens when these experiments go too far?
In 2008 the Human Fertilization Embryology Act was published to the public and since then scientists have created 155 embryos that contains both human and animal genetic material. The creation of a variety of hybrids became legalized including animal egg being fertilized by a human sperm called 'cybrids'. The human nucleus, in this scenario, is implanted into an animal cell known as 'chimeras' where the human cells are now mixed with the animal's embryos. Such techniques and many others can be used to develop embryonic stem cells that will be able to treat a range of incurable illnesses. (B)
Research in the UK have stopped creating hybrid
embryos due to the lack of funding. Many scientists believe that this work will
continue again in the near future. The controversy here is is whether it is
ethically moral to use animals to save human lives. Is one life worth another?
Many believe that it can never be justifiable as it discredits the UK as a
country. There were 80 treatments and cures conducted with stem cells in which
adult stem cells (not embryonic ones). This fails on the moral and ethical
aspects as well as the scientific and medical aspects. Adding more fuel to the
flames, the question of why these experiments were kept a secret and if the
scientists were proud of their work why is there a need to as parliamentary
questions in order for these studies to become publicly aware. The concern
stretches to the scientists’ curiosity and eagerness to experiment, often times
lacking enough rationale to perform such experiments. (B)
In 2008 the Human Fertilization Embryology Act was published to the public and since then scientists have created 155 embryos that contains both human and animal genetic material. The creation of a variety of hybrids became legalized including animal egg being fertilized by a human sperm called 'cybrids'. The human nucleus, in this scenario, is implanted into an animal cell known as 'chimeras' where the human cells are now mixed with the animal's embryos. Such techniques and many others can be used to develop embryonic stem cells that will be able to treat a range of incurable illnesses. (B)
A group of leading scientists warned about ‘Planet of
the Apes’ experiments for they demanded new rules in order to prevent lab
animals from developing human attributes from human stem cell injections into
the brains of primates. Robin Lovell-Badge from the Medical Research Council’ s
National Institute for Medical Research, stated that scientists were not concerned
about human-animal hybrid embryos because by law these have to be destroyed
within 14 days. He said: ‘The reason for doing these experiments is to
understand more about early human development and come up with ways of curing
serious diseases, and as a scientist I feel there is a moral imperative to
pursue this research. As long as we have sufficient controls – as we do in this
country – we should be proud of the research.’ (B)
it was worried about the chance that animals’ “cognitive state” could be altered if they ended up with human brain cells.
CONCLUSION:
The
experiments rely on a cutting-edge fusion of technologies, including
recent breakthroughs in stem-cell biology and gene-editing techniques.
By modifying genes, scientists can now easily change the DNA in pig or
sheep embryos so that they are genetically incapable of forming a
specific tissue. Then, by adding stem cells from a person, they hope the
human cells will take over the job of forming the missing organ, which
could then be harvested from the animal for use in a transplant
operation.
“We can make an
animal without a heart. We have engineered pigs that lack skeletal
muscles and blood vessels,” says Daniel Garry, a cardiologist who leads a
chimera project at the University of Minnesota. While such pigs aren’t
viable, they can develop properly if a few cells are added from a normal
pig embryo. Garry says he’s already melded two pigs in this way and
recently won a $1.4 million grant from the U.S. Army, which funds some
biomedical research, to try to grow human hearts in swine.
it was worried about the chance that animals’ “cognitive state” could be altered if they ended up with human brain cells.
it was worried about the chance that animals’ “cognitive state” could be altered if they ended up with human brain cells.
it was worried about the chance that animals’ “cognitive state” could be altered if they ended up with human brain cells.
The effort to incubate
organs in farm animals is ethically charged because it involves adding
human cells to animal embryos in ways that could blur the line between
species.
The effort to incubate
organs in farm animals is ethically charged because it involves adding
human cells to animal embryos in ways that could blur the line between
species.
The experiments rely on a cutting-edge fusion of
technologies, including recent breakthroughs in stem-cell biology and
gene-editing techniques. By modifying genes, scientists can now easily change
the DNA in pig or sheep embryos so that they are genetically incapable of
forming a specific tissue. Then, by adding stem cells from a person, they hope
the human cells will take over the job of forming the missing organ, which
could then be harvested from the animal for use in a transplant operation.
“We can make an animal without a heart. We have engineered
pigs that lack skeletal muscles and blood vessels,” says Daniel Garry, a
cardiologist who leads a chimera project at the University of Minnesota. While
such pigs aren’t viable, they can develop properly if a few cells are added
from a normal pig embryo.
Although these new human animal hybrids or chimeras can be a source for organs, will these animals grow to resemble humans a little too much? What if these chimeras develop features such as a more human face or characteristics like higher intelligence? Now what? Is it still ethically and morally right to still proceed as planned in taking out all their organs leading to their death? When is it okay to give a life to save one?
(A)http://news.discovery.com/tech/biotechnology/human-animal-hybrids-growing-for-organ-transplants-160111.htm
(B) http://www.dailymail.co.uk/sciencetech/article-2017818/Embryos-involving-genes-animals-mixed-humans-produced-secretively-past-years.html
(C)http://www.independent.co.uk/news/science/human-animal-hybrids-chimeras-us-science-a6806516.html
(D)https://www.technologyreview.com/s/545106/human-animal-chimeras-are-gestating-on-us-research-farms/
*Please note! These images are not mine. They were found on various tumblr sites! If any are yours please let me know so that I can give you credit for them! Also the people in the images have no relation to the diseases, illnesses, or cancers I write about. Thanks so much & enjoy~
