The second "three-parent" child
A child was born in Ukraine with the genetic material of three parents
The world's first child with the genetic material of three parents was born in Ukraine using the method of transferring a fertilized egg to a donor one, director of the clinic of reproductive medicine "Nadezhda" Valery Zukin said.
The pregnancy proceeded absolutely normally, the clinic said. The newborn girl has already been discharged from the hospital.
"What is the uniqueness of our case, why is it the first in the world?.. In our case, there was a transfer of a fertilized egg – a unicellular embryo, and there (in Mexico – ed.) there were not yet fertilized (eggs – ed.)," Zukin said at a press conference.
The director of the clinic explained that after fertilization of an egg, two nuclei are formed in it – one from the mother, the second from the father. Reproductologists removed these two nuclei from the mother's egg and transferred them to the donor egg, from which two nuclei had been similarly removed before. The need for such a method arose due to a genetic disease of a woman, she suffered from infertility.
In this case, this method is effective, since the mutated genes carrying the disease remained in the original maternal egg, and the genes in the nuclei are not damaged. Thus, the nuclei implanted in the donor egg made it possible to avoid a genetic disease, Zukin explained.
"As a result, we get a child who has the nuclear DNA of the parents, and the cytoplasmic DNA from the donor," he said.
Earlier, New Scientist magazine reported that the world's first child with the genetic material of three parents was born in Mexico. A couple from Jordan turned to scientists in the United States because of a rare genetic disease that prevented the couple from having a child. The researchers, led by John Zhang, applied the technology using the genetic material of another female donor.
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18.01.2017