Scientists have long been conducting experiments to eliminatevarious hybrid animal species. As a rule, this applies to laboratory animals, experiments on which are necessary for obtaining species with new properties, for testing various preparations, and so on. In this case, hybridization occurs, as a rule, within one species. That is, rats of one species interbreed with rats of another species. Where rarely cross different species (the most famous example is a mule, a hybrid of a donkey and a horse). And very rarely experimenting with embryos of animals and humans. However, very soon it will be done by Japanese scientists. They even got permission for this.
Who will breed animal and human hybrids
For a start it is worth noting that until March 2019there was a partial ban on this kind of experiments, however, as you understand, it was removed. The first researcher who managed to get permission to breed hybrids, was the Japanese Hiromitsu Nakauti. He plans to grow human cells in the embryos of mice and rats, and then transplant these embryos in surrogate animals for further observation.
See also: Scientists want to grow human organs inside pigs.
It is worth noting that attempts to create this kindembryos have been made before, but the ban concerned, if I may say so, “the lifetimes of embryos”. Scientists were allowed to create hybrid species, but not bring them to the point of birth.
Why create hybrids of humans and animals?
Mr. Nakaguchi says he plansact slowly and will not try to immediately seek the birth of hybrid animals. Initially, he plans to grow hybrid embryos of mice to a period of 14.5 days, when the organs of the animal are already formed. The same experiments will be conducted on rats, but their hybrids will grow a little longer - 15.5 days. Later, Nakauti plans to apply for a permit to grow hybrid embryos in pigs for up to 70 days.
It is necessary to act in stages and carefully, thatwill allow a dialogue with a skeptical public who is worried and anxious, ”says Tetsuya Ishii, a colleague of Nakaguchi, a researcher at Hokkaido University in Sapporo (Japan). Some experts in the field of bioethics are concerned about the possibility that human cells can go beyond the development of the target organ, move into the brain of a developing animal and potentially affect its central nervous system. But these problems were taken into account when designing the experiment.
Chimera. A mythical creature with features of several animals. In the scientific world, hybrids of different species are sometimes called that.
So why is all this necessary? In fact, the reason sounds quite logical: the ultimate goal of Nakauchi is the production of animals with organs from human cells, which, ultimately, can be transplanted into humans. Thus, in the future, it will be possible to grow tissues, organs, and possibly whole organ systems in order to save many human lives by transplantation.
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