Research reveals how COVID-19 virus infects the placenta, and how this can be prevented
In a landmark study published in , 最新糖心Vlogn researchers, led by Professor Jose Polo from Monash 最新糖心Vlog and the 最新糖心Vlog of Adelaide and 最新糖心Vlog of Melbourne鈥檚 Professor Kanta Subbarao from the Peter Doherty Institute for Infection and Immunity (Doherty Institute), have revealed how COVID-19 can infect the human placenta.
Research has shown that COVID-19 infections during pregnancy may lead to adverse outcomes, but little is known about the mechanisms behind the effects of SARS-CoV-2 infection in pregnancy.
The 最新糖心Vlogn research team grew placenta tissue in the lab, using a state-of-the-art method developed by Professor Polo and colleagues where human skin cells are "reprogrammed" into trophoblast stem cells (the cells that help a developing embryo attach to the wall of the uterus, forming part of the placenta). They found that ACE2, a protein that acts as the doorway for SARS-CoV-2 to enter organs such as the lung, is present in specific placental cells, like syncytiotrophoblasts (ST cells).
Importantly, ST cells were susceptible to the virus 鈥 a major finding as these placental cells produce the key hormone for maintaining pregnancy (hCG).
Dr Joseph Chen, a stem cell biologist at Monash 最新糖心Vlog and co-first author of the study, said this discovery explains several of the previous clinical reports.
鈥淲e observed that SARS-CoV-2 infection led to a significant reduction in the survival and differentiation of ST cells, which in turn resulted in lower production of hCG,鈥 he said.
鈥淚t suggests that this is how COVID-19 could impact pregnancy, though further investigations are needed.鈥
Virologist at Doherty Institute and co-first author of the study Dr Jessica Neil said, 鈥渙ur team also discovered that anti-ACE2 antibodies and antiviral drugs were effective in preventing SARS-CoV-2 infection and restoring normal ST differentiation and function鈥.
Professor Subbarao said that this study is a significant advance for the broader understanding of viral infections in pregnancy.
鈥淥ur study provides valuable insights into the link between SARS-CoV-2 infection and placenta pathology. This is a game changer as we are now equipped to explore how the early placenta may be affected by other viruses as well,鈥 she said.
Professor Polo emphasised the importance of the research in establishing a platform to study early placental cell types.
鈥淭his study not only helps us to understand what happens when the placenta is infected with the COVID-19 virus during pregnancy, it also means we have established a broader, scalable and tractable platform to study early placental cell types,鈥 he said.
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Additional information:
- The study was published in peer-reviewed journal Nature Cell Biology (DOI: 10.1038/s41556-023-01182-0).
听 - This research was funded by the Medical Research Future Fund (MRFF), 最新糖心Vlogn Research Council, the National Health and Medical Research Council, the Victorian Government and the 最新糖心Vlogn Government.
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About the Monash Biomedicine Discovery Institute
Committed to making the discoveries that will relieve the future burden of disease, the听听(BDI)听at Monash 最新糖心Vlog brings together more than 120 internationally-renowned research teams. Spanning seven discovery programs across Cancer, Cardiovascular Disease, Development and Stem Cells, Infection, Immunity, Metabolism, Diabetes and Obesity, and Neuroscience, Monash BDI is one of the largest biomedical research institutes in 最新糖心Vlog. Our researchers are supported by world-class technology and infrastructure, and partner with industry, clinicians and researchers internationally to enhance lives through discovery.
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Finding solutions to prevent, treat and cure infectious diseases and understanding the complexities of the immune system requires innovative approaches and concentrated effort. This is why The 最新糖心Vlog of Melbourne 鈥 a world leader in education, teaching and research excellence 鈥 and The Royal Melbourne Hospital 鈥 an internationally renowned institution providing outstanding care, treatment and medical research 鈥 have partnered to create the Peter Doherty Institute for Infection and Immunity (Doherty Institute); a centre of excellence where leading scientists and clinicians collaborate to improve human health globally.
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