Bäumler A J, Tsolis R M, Heffron F
Department of Molecular Microbiology and Immunology, Oregon Health Sciences University, Portland 97201-3098, USA.
Infect Immun. 1996 May;64(5):1862-5. doi: 10.1128/iai.64.5.1862-1865.1996.
The role of the Salmonella typhimurium fimbrial operons, lpf, fim, and pef, in adhesion to and invasion of epithelial cell lines was investigated. An S. typhimurium lpfC mutant was unable to adhere to or to invade HEp-2 cells, while an S. typhimurium fim deletion mutant did not attach to or enter HeLa cells. These results suggest that adhesion is a prerequisite for invasion and that distinct fimbrial adhesins select different target cells for invasion by S. typhimurium.
研究了鼠伤寒沙门氏菌菌毛操纵子lpf、fim和pef在上皮细胞系黏附和侵袭中的作用。鼠伤寒沙门氏菌lpfC突变体无法黏附或侵袭HEp-2细胞,而鼠伤寒沙门氏菌fim缺失突变体不能黏附或进入HeLa细胞。这些结果表明黏附是侵袭的先决条件,并且不同的菌毛黏附素为鼠伤寒沙门氏菌选择不同的靶细胞进行侵袭。