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RVC professor contributes to vital research on potential COVID-19 treatment

Continuing the ongoing and expanding partnership between the Royal Veterinary College (RVC) and the Francis Crick Institute, Simon Priestnall— Professor of Veterinary Anatomic Pathology at the RVC—has contributed to a significant new piece of research just published in Science Mag which shows a protein currently being trialed as a treatment for COVID-19 interferes with the repair of lung tissue.

The findings have been published alongside research from Harvard Medical School, which found that severe COVID-19 patients showed strong expression of this protein in their lungs.
The protein called interferon lambda signals to surrounding lung tissue cells to switch on anti-viral defenses when a virus is detected in the body. Working alongside the team from the Crick Institute, Professor Priestnall used his skills in examining the pathology of respiratory viral infections to support the findings that antiviral interferons—such as the protein under investigation—can block repair in damaged lungs. Prof Priestnall, who has researched respiratory coronavirus infections in dogs at the RVC, was able to contribute valuable insights into the project, using the first-hand experience from veterinary species.

Interferon lambda mice lungs


The research concluded that this could prolong lung damage and increase the risk of subsequent bacterial infections. The researchers observed that in mice with influenza an increased level of this protein in their lungs meant that the lungs’ epithelial cells multiplied less. These cells make up the lining of the airspaces in the lung and need to multiply to replace damaged cells and therefore repair damage. This was the case for mice treated with the protein experimentally and mice that had produced the protein naturally, as a result of their response to the virus. The researchers also found that cultures of human lung epithelial cells treated with this protein were less able to grow. Professor Simon Priestnall, Professor of Veterinary Anatomic Pathology at the RVC, said:

“This research is another example of the way in which the RVC’s veterinary pathologists are working together with scientists at the Francis Crick Institute on research which is furthering our understanding of COVID-19 and other viral diseases. At the RVC, we always emphasise the need for collaboration between different disciplines to achieve the best health outcomes for animals and humans, and this vital research demonstrates just how important such an approach is.”


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