AUTHOR=Zhu Lanlan , Li Ping , Zhang Guangyi , He Zhiyong , Tao Xingyu , Ji Yicheng , Yang Wenjing , Zhu Xiaofang , Luo Wanying , Liao Wenjian , Chen Chuanhui , Liu Yang , Zhang Wei TITLE=Role of the ISKpn element in mediating mgrB gene mutations in ST11 hypervirulent colistin-resistant Klebsiella pneumoniae JOURNAL=Frontiers in Microbiology VOLUME=Volume 14 - 2023 YEAR=2023 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2023.1277320 DOI=10.3389/fmicb.2023.1277320 ISSN=1664-302X ABSTRACT=Colistin has emerged as a last-resort therapeutic against antibiotic-resistant bacterial infections, particularly those attributed to carbapenem-resistant Enterobacteriaceae (CRE) like CRKP. Yet, alarmingly, approximately 45% of multidrug-resistant Klebsiella pneumoniae strains now manifest resistance to colistin. Through our study, we discerned that the synergy between carbapenemase and IS elements amplifies resistance in Klebsiella pneumoniae, thereby narrowing the existing therapeutic avenues.