Embryos who cross animals have created monsters?

Embryogenesis by implanting from male skin cells into women's eggs, or injecting the genetic genes of human skin cells into the eggs of animals . New methods to create stem cell sources inevitably causing moral concerns.

However, creating embryos who cross animals will not create a monster . These embryos will not be allowed to grow more than two weeks. The goal of scientists is to find the source of stem cells for application in therapy.

Cloning embryonic clones with skin cells

Within 10 years, stem cell technologies can be applied to treat diseases and heal wounds.In the photo: A Japanese stem cell research laboratory (Photo: AFP)

A company in the state of California - USA, has just announced that it has successfully cloned the world's first adult human embryo from adult skin cells of adults. Scientists used heat to create embryos by implanting genetic information from skin cells into empty eggs, which do not contain DNA genetic information. These are donated skin cells of two men and eggs from three young women who are undergoing treatment for infertility

21 embryos are made up of this process, and are called somatic cell nuclear transfer (SCNT). But then, only 5 embryos remained and developed from 40 to 72 cells.

Three of the five embryos contain DNA from a man's skin cell, indicating that the skin has been reprogrammed to form an embryo. In essence, one of the three embryos also contains a genetic information from a woman who donated eggs, mitochondrial DNA.

Mitochondrial DNA is found in the lining of eggs, and plays an important role in cloning. Because it contains instructions for reprogramming, turning skin cells into embryos. Finding the nucleus that contains the information of men and mitochondrial DNA of a woman in the same embryo has shown that this embryo is successfully cloned.

5 new embryos developed in laboratory conditions to the stage where a reproductive doctor says they are ready to be implanted in a woman's uterus. This is a level of adult human development that has never been achieved before.

Doctor Samuel Wood, co-head of Stemagen Corp.'s research team. - La Jolla, California, says that these embryos develop in good condition.

Scientists only hope that the results of the study will produce cloned embryos, or double the patient's genetic information. Later, they will collect stem cells from those embryos and develop them into tissues that replace the damaged area. This transplant will not be eliminated by the immune system because 'All these efforts are aimed directly at personalization of medications and diseases,' said BS. Samuel Wood said. He added that the scientists did not try to extract stem cells from these first cloned embryos because they thought they could now do human cloning.

This is a significant step towards the goal of personalizing the stem cells of each patient suffering from various diseases. However, these inventors have also seriously said that human-technical barriers still exist.

Other opposition also said scientists in Japan and Wisconsin have just discovered a way to ' reprogram ' to create stem cells from skin cells directly. However, these scientists did not produce embryos as the next step of research.

Allowing human embryos - rabbit .

Meanwhile, in the UK, on ​​Thursday, January 17, the government gave the green light to scientists to use animal eggs to create human stem cells. This law will promote a new supply of stem cells for research.

Researchers can select technology techniques for the production of human stem cells by practicing on the eggs of animals first. Similar studies on stem cells related to humans - animals are also being carried out in China and the United States.

Human embryo at the first stage (taken via computer screen) at La Jolla, California, USA laboratory(Photo: Reuters)

' This is good news for research work, but more importantly, very useful for patients ,' Sophie Petit-Zeman, Association of Medical Research Charities (Association of Medical Research Charities), to speak.

The Committee on Human Embryology and Embryology Authority (CO) said it agreed to sign two conditional one-year research permits for two places to conduct a human embryo study of human embryos.

It is King London College and Newcastle University has submitted applications since 2007 to conduct research to create human stem cells using the eggs of animals.

People will inject genetic genes of skin cells or some adult cells into an empty egg of a female cow or rabbit. Then, a stimulating current is used to break the egg normally, and create an embryo. From that embryo, one can extract stem cells.

' Practicing on cattle eggs such as cows is as effective as manipulating human eggs ,' said Lyle Armstrong, of Newcastle University.

Because the nucleus of the animal has been removed before injecting the genetic gene of the human, so the scientists claim, the embryo does not create a snake-tailed monster that goes to the lion's head. The embryos will also not be allowed to grow more than two weeks.

The goal of scientists is to use them only as scientific research tools to find ways to program without using human eggs. The Newcastle University team thinks we don't need to worry, because these hybrid embryonic stem cells are only used to treat human illness.

Scientists have found a way to harness the power of stem cells to treat degenerative diseases like Parkinson's, since the discovery of these cells could develop into any cell in the muscle. human body.

Sand Flavor (Source: AP, New Scientist, The Washington Post, Vietnamnet)