First embryo created without sperm and egg

Scientists from Israel's Weizmann Research Institute have discovered that stem cells from mice can self-assemble into embryonic structures with the gut, brain cells and heart.

The structures created by the Weizmann Research Institute are called "synthetic embryos" because they form without undergoing fertilization between the egg and sperm, the Guardian reported on August 3.

Comparison between natural and artificial embryos of mice. (Photo: Weizmann Research Institute).

Scientists say that the synthetic mouse embryos are 95% similar to natural embryos in terms of the internal structure and genetic structure of the cells. Organs formed from embryos are capable of functioning.

However, the scientists say the synthetic embryo is unlikely to develop into a living animal without being implanted in the uterus of a female mouse.

The scientists say that synthetic embryo research helps provide a deeper understanding of how tissues and organs form during natural embryonic development.

In addition, the scientists believe that this study helps reduce the number of animal experiments, paving the way for creating a new supply of cells and tissues for transplant in humans.

For example, the skin cells of a leukemia patient can be transformed into bone marrow stem cells to treat their own cancer.

"Embryonic stem cells give rise to a whole synthetic embryo, including the placenta and the yolk sac surrounding the embryo. This study and its applications excite us," said Professor Jacob Hanna, who led the study. research, said.