The University of Southampton

Gene Editing: Does it Hurt those it’s Meant to Help?

When we first looked at gene editing, I had mixed feelings. As some who studies engineering, I believe in innovation and using technology to help people. However, as some whose sibling has a disability, I thought about how the advancement of gene editing pushes the narrative that those with disabilities need ‘fixing’. Therefore, I decided to research the topic further.

First of all, what is gene editing?

Gene editing is the process of deleting, inserting or replacing genetic material within animals, plants and bacteria to alter their characteristics. It has different applications, but I’m focusing on gene therapy and using different techniques to treat diseases. The development of CRISPR-Cas9 has created a quicker, cheaper method for gene editing, leading to the current buzz around the topic.

Laws surrounding gene editing:

While it is illegal in the UK to implant a gene-edited embryo, in 2016, the HFEA approved licensing to allow gene editing of human embryos in research. Many of my classmates thought this was a good change as it could lead to more knowledge and potential cures about inheritable disorders like Cystic Fibrosis. However, is this any different from previous attempts in eugenics? The removal of genetics at an embryonic level will lead to the eradication of different, ‘undesirable’, traits from society. The practice may also lead to the relaxation of laws and the possibility of designer babies.

Gene therapy case:

While gene editing is often associated with inheritable disorders, it can be used to cure cancer. There have been successful results from a study in 2010, where a patient suffering from lymphoma underwent CAR T cell therapy. In this treatment, the patients T cells are collected and then genetically altered in the laboratory so they can recognise the cancerous cells. They are then put back inside the body to fight the cancerous cells.

Image of CAR T-Cell Therapy

Cost of gene editing:

However, gene therapies are expensive! In the US it is estimated that $20.4 billion is spent annually on gene therapies. If this money was spent on creating a more inclusive environment through education of the public and the changing of laws, this could have a far greater effect on the people already living with genetic disorders. Is it not better to create an environment where people can live well with these disorders, then create one which focuses on their removal?

Different opinions:

The NHGRI conducted surveys to investigate patient perspectives on gene editing. Many patients, especially those with Huntington’s, argued that gene editing should be used to prevent other people from inheriting the disease, despite the argument that it could isolate them from society and reinforce the belief that people with disabilities have a low quality of life.

Furthermore, Wellcome Connecting Science hosted a citizen’s jury vote based on the following question: ‘Are there any circumstances under which a UK Government should consider changing the law to allow intentional genome editing of human embryos for serious genetic conditions?’. All the jurors had been affected in one way or another by hereditary diseases and by the end most jurors (17-4) agreed that human embryos should be edited. While a small sample, this vote indicates that the scientific community and the legislators are listening to those who it truly affects, something which has previously been overlooked and distinguishes gene editing from previous, eugenic practices.

Final Thoughts

My summary of different arguments for and against Gene-Editing

I believe that the advancement of gene editing will help those with genetic disorders and provides cures which were previously unavailable. I think that this outweighs the negatives of gene editing especially considering many people with genetic disorders believe in the benefits. However, I think that the narrative surrounding gene editing needs to include those who are affected the most to make sure that it is continuing to be done in a positive way which doesn’t isolate people or become modern-day eugenics.

The Woolly Mouse: Gene Editing’s Newest Invention

[1] On 4 March 2025, the de-extinction company Colossal revealed its latest research: the Woolly Mouse. Unlike typical mice which have short, grey hair, this mouse has long, shaggy, tawny-toned hair, mimicking the hair of the Woolly Mammoth. To achieve this, the scientists used many gene-editing techniques to modify up to 7 different genes involved in lipid production, and hair type, both of which differ due to the Woolly Mammoth’s adaptations to surviving in the cold.

[3] Gene editing is the process of modifying DNA via deletion, addition or modification of different genes in different plants, bacteria and animals which can change their physical features like eye colour and disease risk. While the concept and techniques have been developed since the late 1900’s, recent developments of a tool called CRISPR/Cas9 have greatly advanced gene editing.

[2] Gene-editing research often takes place in animals as humans and animals share many genes. Mice are often used as they have a short gestation period of 20 and have well established methods for gene editing protocols, allowing rapid testing compared to other animals. While the findings in mice models are not fully translational to human genes or in this case to Woolly Mammoth genes, they can still be used for research and understanding the effect of different genes and different characteristics.

[3] The de-extinction of the Woolly Mammoth could have great effects on the Artic tundra and convert it back to grasslands seen in the ice age. This could then reduce CO2 released into the atmosphere. Other animals which played unique crucial roles in their habitat, like the passenger pigeon, could also have positive long-lasting effects if they were brought back. While true de-extinction involves different technologies, the use of genetic engineering may be able to create modern replica animals with desirable characteristics which could still bring positive environmental impact.

There are many arguments for not using gene editing for de-extinction. If we use small creatures like rats, then it is possible to lose track of them and they could infiltrate other ecosystems. It also raises ethical issues as even if we could bring back these species are people and people in power ready for this? There is no guarantee that once people can bring back a Woolly Mammoth that people wouldn’t monopolise the discovery and create zoos filled with de-extinct creatures or bring back other species purely for monetary gains. Therefore, new laws will need to be put in place to regulate the ethical use of gene editing for de-extinction. If this technology develops it could also lead to a wider acceptance of gene editing and the use of gene editing in humans which comes with another set of arguments.

Overall, the arrival of the Woolly Mouse highlights the innovative research continuing to be done in the field of gene editing. While the mouse is adorable, it highlights the potential ethical issues around gene editing and could start discussions around introducing laws to regulate the use of gene editing for de-extinction, to prevent a real-life Jurassic Park situation.

References:

[1] E. Callaway, “Meet the ‘woolly mouse’: why scientists doubt it’s a big step towards recreating mammoths,” Nature.com, Mar. 2025, doi: https://doi.org/10.1038/d41586-025-00684-1.

[2] R. Chen et al., “Multiplex-edited mice recapitulate woolly mammoth hair phenotypes,” bioRxiv (Cold Spring Harbor Laboratory), Mar. 2025, doi: https://doi.org/10.1101/2025.03.03.641227.

[3] D. Shultz, “Should we bring extinct species back from the dead?,” www.science.org, Sep. 26, 2016. https://www.science.org/content/article/should-we-bring-extinct-species-back-dead