PMID- 37817016 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231123 IS - 2731-9229 (Electronic) IS - 2731-9229 (Linking) VI - 18 IP - 1 DP - 2023 Oct 10 TI - The shape-dependent inhibitory effect of rhein/silver nanocomposites on porcine reproductive and respiratory syndrome virus. PG - 126 LID - 10.1186/s11671-023-03900-x [doi] LID - 126 AB - Traditional Chinese medicines (TCMs)/nanopreparations as viral antagonists exhibited a structure-function correlation, i.e., the differences in surface area/volume ratio caused by the variations in shape and size could result in different biochemical properties and biological activities, suggesting an important impact of morphology and structure on the antiviral activity of TCM-based nanoparticles. However, few studies paid attention to this aspect. Here, the effect of TCM-based nanoparticles with different morphologies on their antiviral activity was explored by synthesizing rhein/silver nanocomposites (Rhe@AgNPs) with spherical (S-Rhe/Ag) and linear (L-Rhe/Ag) morphologies, using rhein (an active TCM ingredient) as a reducing agent and taking its self-assembly advantage. Using porcine reproductive and respiratory syndrome virus (PRRSV) as a model virus, the inhibitory effects of S-Rhe/Ag and L-Rhe/Ag on PRRSV were compared. Results showed that the product morphology could be regulated by varying pH values, and both S- and L-Rhe/Ag exhibited good dispersion and stability, but with a smaller size for L-Rhe/Ag. Antiviral experiments revealed that Rhe@AgNPs could effectively inhibit PRRSV infection, but the antiviral effect was morphology-dependent. Compared with L-Rhe/Ag, S-Rhe/Ag could more effectively inactivate PRRSV in vitro and antagonize its adsorption, invasion, replication, and release stages. Mechanistic studies indicated that Rhe@AgNPs could reduce the production of reactive oxygen species (ROS) induced by PRRSV infection, and S-Rhe/Ag also had stronger ROS inhibitory effect. This work confirmed the inhibitory effect of Rhe@AgNPs with different morphologies on PRRSV and provided useful information for treating PRRSV infection with metal nanoparticles synthesized from TCM ingredients. CI - (c) 2023. Springer Science+Business Media, LLC, part of Springer Nature. FAU - Ren, Caifeng AU - Ren C AD - State Key Laboratory of Agricultural Microbiology, College of Resource and Environment, College of Science, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. FAU - Ke, Qiyun AU - Ke Q AD - State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, People's Republic of China. FAU - Fan, Xiaoxia AU - Fan X AD - State Key Laboratory of Agricultural Microbiology, College of Resource and Environment, College of Science, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. FAU - Ning, Keke AU - Ning K AD - College of Science, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. FAU - Wu, Yuan AU - Wu Y AD - College of Science, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. FAU - Liang, Jiangong AU - Liang J AD - State Key Laboratory of Agricultural Microbiology, College of Resource and Environment, College of Science, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. liangjg@mail.hzau.edu.cn. LA - eng GR - 21904046/National Natural Science Foundation of China/ GR - 22074048/National Natural Science Foundation of China/ GR - 2022YFD1800305/National Key Research and Development Program of China/ PT - Journal Article DEP - 20231010 PL - Switzerland TA - Discov Nano JT - Discover nano JID - 9918540788706676 PMC - PMC10564707 OTO - NOTNLM OT - Antiviral mechanisms OT - Porcine reproductive and respiratory syndrome virus OT - Reactive oxygen species OT - Rhein OT - Silver nanocomposites COIS- There are no competing interests to declare. EDAT- 2023/10/11 00:42 MHDA- 2023/10/11 00:43 PMCR- 2023/10/10 CRDT- 2023/10/10 23:45 PHST- 2023/07/13 00:00 [received] PHST- 2023/09/18 00:00 [accepted] PHST- 2023/10/11 00:43 [medline] PHST- 2023/10/11 00:42 [pubmed] PHST- 2023/10/10 23:45 [entrez] PHST- 2023/10/10 00:00 [pmc-release] AID - 10.1186/s11671-023-03900-x [pii] AID - 3900 [pii] AID - 10.1186/s11671-023-03900-x [doi] PST - epublish SO - Discov Nano. 2023 Oct 10;18(1):126. doi: 10.1186/s11671-023-03900-x.