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(PPE), seaweed Polysaccharides, have exhibited antiviral activity and were expected to be used for influenza treatment. In our research, the capability of PPE to inhibit H1N1 infection was proved in MDCK cells. PPE could make MDCK cells avoid being infected with H1N1 and inhibited nuclear fragmentation and condensation of chromatin. PPE evidently inhibited the generation of reactive oxygen species in MDCK cells. Mechanism study revealed that PPE prevented MDCK cells from H1N1 infection through induction of apoptosis by stimulating AKT signaling pathway and suppressing p\u2010p53 signaling pathway. In conclusion, PPE turns out to act as a prospective antiviral drug for H1N1 influenza.<\/jats:p>","DOI":"10.1002\/fsn3.3110","type":"journal-article","created":{"date-parts":[[2022,10,22]],"date-time":"2022-10-22T05:29:25Z","timestamp":1666416565000},"page":"743-751","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Inhibition of <scp>H1N1<\/scp> by <i>Picochlorum<\/i> sp. 122 via <scp>AKT<\/scp> and p53 signaling pathways"],"prefix":"10.1002","volume":"11","author":[{"given":"Danyang","family":"Chen","sequence":"first","affiliation":[{"name":"Center Laboratory, Guangzhou Women and Children's Medical Center Guangzhou Medical University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhihui","family":"Ning","sequence":"additional","affiliation":[{"name":"Center Laboratory, Guangzhou Women and Children's Medical Center Guangzhou Medical University  Guangzhou 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