Healthy babies born from DNA of three people to prevent inherited diseases - NBC News

Groundbreaking Medical Breakthrough: Experimental Technique Saves 8 Babies from Rare Genetic Diseases

In a groundbreaking medical breakthrough, eight healthy babies were born in Britain with the help of an experimental technique that uses DNA from three people. This innovative approach aims to help mothers avoid passing devastating rare diseases to their children.

What is the Experimental Technique?

The experimental technique involves using a process called "mitochondrial replacement therapy" (MRT) to replace a mother's mitochondrial DNA with healthy DNA from a donor. Mitochondrial DNA is responsible for many of the body's functions, including energy production and cell division.

In this technique, a mitochondria from a donor egg (usually from an adult volunteer) is inserted into an empty egg cell that has had its own mitochondria removed. The resulting egg cell then develops into a healthy embryo, which can be implanted into a womb where it will develop into a baby.

How Does it Work?

The process works by targeting the mitochondrial DNA of the mother's egg cells, replacing it with healthy donor DNA. This is done through a process called "somatic cell nuclear transfer" (SCNT), where an adult egg cell is taken and its nucleus is removed. The nucleus contains the genetic material necessary for development.

What Diseases Are Being Targeted?

The experimental technique aims to prevent devastating rare diseases that are caused by mutations in mitochondrial DNA. Some of these diseases include:

  • Leber's hereditary optic neuropathy (LHON): a condition that causes blindness and is usually inherited from one's mother.
  • MELATONIN RESISTANCE SYNDROME: a condition that affects the production of melatonin, leading to sleep disorders and other symptoms.

How Effective Is the Technique?

The experimental technique has been shown to be effective in preventing these diseases. In the UK, where the technique was first used, it has prevented over 100 cases of mitochondrial disease in children born to carriers of the mutated gene.

In the case of the eight babies mentioned in the news article, their mothers were all carrying a mutated gene that put them at risk of passing on the disease to their child. However, thanks to the experimental technique, these babies have been able to develop normally without any ill effects.

Challenges and Controversies

While the experimental technique holds great promise, there are also challenges and controversies surrounding its use. Some critics argue that it raises questions about the ethics of manipulating human DNA and the potential risks associated with gene editing.

Additionally, there is ongoing debate about whether this technique should be used for reproductive purposes (i.e., to prevent disease in future generations) or only for treating existing cases of mitochondrial disease.

What's Next?

The experimental technique has been approved by UK regulators and is now available at a limited number of fertility clinics. While more research is needed to fully understand its potential benefits and risks, this breakthrough holds great promise for the prevention of devastating rare diseases in future generations.

As the medical community continues to explore the possibilities of gene editing and mitochondrial replacement therapy, it's likely that we'll see even more innovative approaches to disease prevention in the years to come.

Conclusion

The experimental technique using DNA from three people has shown great promise in preventing devastating rare diseases in babies. While there are challenges and controversies surrounding its use, this breakthrough holds great potential for improving human health and reducing the risk of inherited diseases.

As we continue to explore the possibilities of gene editing and mitochondrial replacement therapy, it's essential that we prioritize open communication and informed debate about these issues. By doing so, we can ensure that future generations benefit from this groundbreaking medical technology.