The Next Pandemic? New Study Reveals How the Recent Animal-Origin Virus Enters Human Cells | CPT PPP Coverage

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Scientists have illuminated the process by which a highly infectious virus is a tiny infectious agent that is not considered a living organism. It consists of genetic material, either DNA or RNA, that is surrounded by a protein coat called a capsid. Some viruses also have an outer envelope made up of lipids that surrounds the capsid. Viruses can infect a wide range of organisms, including humans, animals, plants, and even bacteria. They rely on host cells to replicate and multiply, hijacking the cell&#039;s machinery to make copies of themselves. This process can cause damage to the host cell and lead to various diseases, ranging from mild to severe. Common viral infections include the flu, colds, HIV, and COVID-19. Vaccines and antiviral medications can help prevent and treat viral infections.</div>” data-gt-translate-attributes=”[{” attribute=””>virus, recently transmitted from animals to humans, gains entry into human cells.

Dr. Ariel Isaacs and Dr. Yu Shang Low, from The University of Queensland, have successfully revealed the structure of the fusion protein of the Langya virus. This virus was first identified in humans in Eastern China in August 2022.

Dr. Isaacs said the virus caused fever and severe respiratory symptoms and was from the same class of viruses as the deadly Nipah and Hendra viruses.

“We’re at an important juncture with viruses from the Henipavirus genus, as we can expect more spillover events from animals to people,” Dr. Isaacs said.

“It’s important we understand the inner workings of these emerging viruses, which is where our work comes in.”

The research team in front of UQ’s cryogenic electron microscope, L-R Dr. Ariel Isaacs, Associate Professor Daniel Watterson, Dr. Naphak Modhiran, and Dr. Yu Shang Low. Credit: The University of Queensland

The team used UQ’s molecular clamp technology to hold the fusion protein of the Langya virus in place to uncover the atomic structure using cryogenic electron microscopy at UQ’s Centre for Microscopy & Microanalysis.

“Understanding the structure and how it enters cells is a critical step towards developing vaccines and treatments to combat Henipavirus infections,” Dr. Isaacs said.

“There are currently no treatments or vaccines for them, and they have the potential to cause a widespread outbreak.”

Associate Professor Daniel Watterson, a senior researcher on the project, said they also saw that the Langya virus fusion protein structure is similar to the deadly Hendra virus, which first emerged in southeast Queensland in 1994.

“These are viruses that can cause severe disease and have the potential to get out of control if we’re not properly prepared,” Dr Watterson said.

“We saw with virus disease 2019, (which was originally called &quot;2019 novel coronavirus&quot; or 2019-nCoV) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It has spread globally, resulting in the 2019–22 coronavirus pandemic.</div>” data-gt-translate-attributes=”[{” attribute=””>COVID-19 how unprepared the world was for a widespread viral outbreak and we want to be better equipped for the next outbreak.”

The researchers will now work to develop broad-spectrum human vaccines and treatments for Henipaviruses, such as Langya, Nipah, and Hendra.

Reference: “Structure and antigenicity of divergent Henipavirus fusion glycoproteins” by Ariel Isaacs, Yu Shang Low, Kyle L. Macauslane, Joy Seitanidou, Cassandra L. Pegg, Stacey T. M. Cheung, Benjamin Liang, Connor A. P. Scott, Michael J. Landsberg, Benjamin L. Schulz, Keith J. Chappell, Naphak Modhiran and Daniel Watterson, 16 June 2023, Nature Communications.
DOI: 10.1038/s41467-023-39278-8

UQ acknowledges the support of the Coalition for Epidemic Preparedness Innovations, the Queensland and Australian governments and philanthropic partners.