The problem of genetic modification generatesacute discussions in scientific circles, especially if experiments are connected with living organisms and even more so with the use of human genetic material. However, in Japan, the government recently issued ambiguous permission to modify rodents.
Professor of the Institute of Medical Sciences atTokyo University Chiromitsu Nakuchi developed a method of crossing human cells with embryos of mice or rats. The appearance of the new hybrid animals will not differ from the "standard" natural individuals. The main task of scientists is to modify internal organs by introducing human genetic material into them. The purpose of the experiment is the cultivation of animal internal organs capable of replacing human organs.
Japanese scientists using stem cellsthey seek to initiate the cultivation of human organs in certain species of animals for their further transplantation into humans. Thus, the issue of long waiting for patients with donor organs will be solved.
Critics of the technique of “crossing” a person andanimal fears cause a possible modification of the consciousness of the subjects in the case of penetration of human cells into the brain of animals. However, Kharomitsu Nakauchi eliminates this possibility by introducing human genetic material exclusively into the pancreas for the further “production” of internal organs identical to human ones.
The plans of Japanese scientists include systematic,a thorough study of the possibility of modifying animals. At the first stage of the experiment, modified animal embryos will be grown for up to 14 days, and rats to 15. At the next stage, Nakauchi plans to obtain permission to grow modified pig embryos for up to 70 days.