Journal article
Adherence to respiratory epithelia by recombinant Escherichia coli expressing Klebsiella pneumoniae type 3 fimbrial gene products
Infection and immunity, Vol.60(4), pp.1577-1588
04/1992
DOI: 10.1128/IAI.60.4.1577-1588.1992
PMCID: PMC257033
PMID: 1312518
Abstract
We examined the role of Klebsiella fimbrial types 1 and 3 in mediating adherence to human buccal and tracheal cells and to lung tissue sections. We found that clinical isolates of Klebsiella pneumoniae producing type 3 fimbriae and Escherichia coli HB101 containing a recombinant plasmid encoding expression of Klebsiella type 3 fimbriae (pFK10) demonstrated increased adherence to tracheal cells, trypsinized buccal cells, and lung tissue sections, in contrast to nonfimbriate and to type 1 fimbriate bacteria. Adherence by type 3 fimbriate bacteria was inhibited by purified type 3 fimbriae and Fab fragments derived from type 3 fimbrial-specific polyclonal immunoglobulin G. Type 3 fimbriae mediated attachment to the basolateral surface of tracheal cells and to the basal epithelial cells and the basement membrane regions of bronchial epithelia. Using an E. coli transformant (pDC17/pFK52), which expresses nonadherent P fimbrial filaments, along with the type 3 fimbrial adhesin (MrkD), we demonstrated that type 3 fimbrial attachment to respiratory cells was attributable to the MrkD adhesin subunit. Subsequent experiments demonstrated that the epithelial target of the type 3 fimbrial adhesin was most likely a peptide molecule rather than a carbohydrate. The results of this study demonstrate that, in vitro, the Klebsiella type 3 fimbrial adhesin mediates adherence to human respiratory tissue.
Details
- Title: Subtitle
- Adherence to respiratory epithelia by recombinant Escherichia coli expressing Klebsiella pneumoniae type 3 fimbrial gene products
- Creators
- Douglas B Hornick - Department of Internal Medicine, University of Iowa College of Medicine, Iowa City 52242Bradley L AllenMark A HornSteven Clegg
- Resource Type
- Journal article
- Publication Details
- Infection and immunity, Vol.60(4), pp.1577-1588
- DOI
- 10.1128/IAI.60.4.1577-1588.1992
- PMID
- 1312518
- PMCID
- PMC257033
- ISSN
- 0019-9567
- eISSN
- 1098-5522
- Grant note
- GM07337 / NIGMS NIH HHS HL07638 / NHLBI NIH HHS
- Language
- English
- Date published
- 04/1992
- Academic Unit
- Pulmonary, Critical Care, and Occupational Medicine; Microbiology and Immunology; Internal Medicine
- Record Identifier
- 9984094874402771
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