{"title":"The Cumulative Variations of Respiratory Syncytial Virus Fusion Protein (F) in Ten Consecutive Years in China.","authors":"Fengjie Wang, Mingli Jiang, Zhenzhi Han, Yanpeng Xu, Yu Sun, Runan Zhu, Dongmei Chen, Qi Guo, Yutong Zhou, Yao Yao, Ling Cao, Dong Qu, Muya Li, Linqing Zhao","doi":"10.3390/idr16050081","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Variations in the fusion (F) protein of respiratory syncytial virus (RSV) with main antigenic sites I-V and Ø may affect the development of RSV vaccines and therapies.</p><p><strong>Methods: </strong>In the study, 30 respiratory specimens positive for RSV were randomly selected from children with acute lower respiratory infections (ALRI) in Beijing every year from 2012 to 2021 for <i>F</i> gene sequencing. Then, 300 <i>F</i> gene sequences and 508 uploaded to GenBank from China were subjected to phylogenetic analysis.</p><p><strong>Results: </strong>The results indicated the nucleotide identities were 95.4-100% among 446 sequences of RSV A, and 96.3-100% among 362 of RSV B. The most common variant loci were N80K (100.00%) and R213S (97.76%) for site Ø, and V384I/T (98.43%) for site I among sequences of RSV A, and M152I (100.00%), I185V (100.00%), and L172Q/H (94.48%) for site V, and R202Q (99.45%) for site Ø among sequences of RSV B. N276S appears in 95.29% sequences of RSV A, while S276N and N262 I/S appear in 1.38% and 0.55% sequences of RSV B, respectively. No variation was found in all sequences at the binding sites of 14N4 and motavizumab.</p><p><strong>Conclusions: </strong>There were cumulative variations of the RSV <i>F</i> gene, especially at some binding sites of antigenic sites.</p>","PeriodicalId":13579,"journal":{"name":"Infectious Disease Reports","volume":"16 5","pages":"1017-1029"},"PeriodicalIF":3.4000,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11507529/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Infectious Disease Reports","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/idr16050081","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Variations in the fusion (F) protein of respiratory syncytial virus (RSV) with main antigenic sites I-V and Ø may affect the development of RSV vaccines and therapies.
Methods: In the study, 30 respiratory specimens positive for RSV were randomly selected from children with acute lower respiratory infections (ALRI) in Beijing every year from 2012 to 2021 for F gene sequencing. Then, 300 F gene sequences and 508 uploaded to GenBank from China were subjected to phylogenetic analysis.
Results: The results indicated the nucleotide identities were 95.4-100% among 446 sequences of RSV A, and 96.3-100% among 362 of RSV B. The most common variant loci were N80K (100.00%) and R213S (97.76%) for site Ø, and V384I/T (98.43%) for site I among sequences of RSV A, and M152I (100.00%), I185V (100.00%), and L172Q/H (94.48%) for site V, and R202Q (99.45%) for site Ø among sequences of RSV B. N276S appears in 95.29% sequences of RSV A, while S276N and N262 I/S appear in 1.38% and 0.55% sequences of RSV B, respectively. No variation was found in all sequences at the binding sites of 14N4 and motavizumab.
Conclusions: There were cumulative variations of the RSV F gene, especially at some binding sites of antigenic sites.