The whole-cell proteome shows the characteristics of macrolides-resistant Bordetella pertussis in China linked to the biofilm formation

作者：Zhe Lv, Sha Yin, Kaichong Jiang, Wei Wang, Yang Luan, Shuang Wu, Jianfei Shi, Zhe Li, Xiao Ma, Zengguo Wang, Hong Yan · 发表于：Research Square · 年份：2023 · DOI：10.21203/rs.3.rs-2663338/v1 · 研究领域：Bacterial Infections and Vaccines、Bacillus and Francisella bacterial research、Bacterial biofilms and quorum sensing

Abstract The macrolides-resistant Bordetella pertussis (MR- Bp ) isolates in China evolved from the ptxP1/fhaB3 allele and rapidly became predominant, suggestive of an adaptive transmission ability. This was different from the global prevalent ptxP3 strains, in which MR- Bp was rarely reported. The study aimed to determine the underlying mechanism responsible for fitness and resistance in these two strains. We identify proteomic differences between ptxP1/fhaB3 and ptxP3/fhaB1 strains using TMT-based proteomics. We then performed in-depth bioinformatic analysis to determine differentially expressed genes (DEGs), followed by gene ontology (GO), and protein-protein interaction (PPI) network analysis. Further PRM analysis confirmed the expression of 4 target proteins. Finally, the crystal violet method was used to determine biofilm-forming ability. The results showed that the main significant different proteins between the two represent isolates were related to biofilm formation. Furthermore, we have confirmed that ptxP1/fhaB3 showed hyperbiofilm formation in comparison with ptxP3/fhaB1 . It is suggested that the resistance and adaptability of ptxP1/fhaB3 strains may be related to the formation of biofilm through proteomics. In a word, we determined the significantly different proteins between the ptxP1/fhaB3 and ptxP3/fhaB1 strains through whole-cell proteome, which were related to biofilm formation.