Sihai network

Human chicken hybrid embryo experiment by scientists

Original title: scientists make human chicken hybrid embryo: a major discovery has been sprayed by netizens

Sihai technology, according to foreign media reports, a research team at the Rockefeller University in New York recently combined artificial human embryonic cells with chicken embryos to create half human and half chicken embryos in the laboratory. It is reported that this experiment has confirmed the existence of organizer cells in human body for the first time, but the experimental method has caused a stir in the society. Many people on social media have criticized this experiment as' pathological ',' super annoying 'and' disgusting '.

Combining human stem cells with chicken embryos sounds like a nightmare science fiction movie. But scientists at Rockefeller University in New York did. These researchers hope that by transplanting human stem cells into newly formed chicken embryos, they can learn more about how cells transform into fetuses. They believe that the findings in the experiment may lead to a series of new treatments for developmental disorders, but the experiment still leads to criticism.

Once the experiment was published, the criticism from social media was particularly sharp. Eric hedean, a twitter user, said: 'it's totally sick

Bernie for the greater good added: 'really. It's something sick. When supercomputers are available for molecular level research, there is no excuse. '

Ashley said: 'it's terrible, it's very disturbing!

The study was conducted by a team led by Ali brivanlou, a scientist at Rockefeller University in New York. Scientists have known that embryonic stem cells can differentiate into any type of functional cell: from bone, brain to lung and liver.

They also know that special cell groups found in amphibian and fish embryos play a crucial role in shaping their early developmental structures.

These tissues, known as' organizers', release molecular signals that allow cells to grow and develop in specific ways.

When an organizer is transferred from one embryo to another, the 'organizer' will stimulate its new host to gradually develop a central nervous system including the spinal cord and brain, and the organizer itself will develop into spinal bone and other tissues.

However, due to ethical restrictions on human embryo experiments, scientists do not know whether there are similar organizer cells in the human body.

But the problem is that to see potential human organizer cells, scientists need to extend the incubation time of embryos to 15-16 days. However, limited by national ethics and laws, many countries, including the United States, prohibit scientists from experimenting with human embryos that have developed for more than 14 days. For example, in Massachusetts, the local law stipulates that only embryos that have developed within 14 days can be experimented. This is precisely the key point that the embryo can no longer divide, and it is also the time when the organizer cell begins to form. It is these ethical issues that limit the direct use of human embryos to carry out the corresponding experiments. So scientists began to actively look for a variety of similar alternatives.

To solve this problem, a team led by Dr. brivanlou transplanted artificial human embryonic cells into chicken embryos. Once they are implanted in poultry hosts, these artificial stem cells begin to lay the foundation for the formation of the secondary spine and nervous system, a phenomenon that clearly demonstrates the existence of a real human organizer.

Dr. brivanlou said of the results: 'once the human organizer is transplanted into a chicken embryo, it's used to direct bird cells to build the brain and nervous system in exactly the same way that amphibians and fish use. '

'To my surprise, this combination not only allowed the embryo to survive, but actually produced such a beautiful tissue structure. '

Cassandra Fairbanks, who also expressed their disgust online, wrote on Twitter: 'it's not good. Scientists need to be calm. They are making human / chicken hybrid embryos. '

A complete review of the study is published in the latest issue of the journal Nature.