Roles of soluble fibronectin and beta 1 integrin receptors in the binding of Mycobacterium leprae to nasal epithelial cells.

TitleRoles of soluble fibronectin and beta 1 integrin receptors in the binding of Mycobacterium leprae to nasal epithelial cells.
Publication TypeJournal Article
Year of Publication1993
AuthorsByrd SR, Gelber R, Bermudez LE
JournalClinical immunology and immunopathology
Volume69
Issue3
Pagination266-71
Date Published1993 Dec
ISSN0090-1229
KeywordsAmino Acid Sequence, Bacterial Proteins, Cell Line, Epithelial Cells, Epithelium, Fibronectins, Humans, Integrins, Leprosy, Ligands, Macrophages, Molecular Sequence Data, Mycobacterium leprae, Nasal Septum, Oligopeptides, Protein Binding, Solubility
Abstract

The mechanisms by which Mycobacterium leprae invades the human host are presently unknown. We investigated the ability of M. leprae to bind to human RPMI 2650 cells, a human nasal septal epithelial cell line, using both microscopic observation and an ELISA technique. The results demonstrated that M. leprae adheres to nasal cells after binding to soluble fibronectin. Furthermore, it was observed that M. leprae could bind to the beta 1 chain of the integrins in the absence of serum or mucus. These results demonstrated that M. leprae uses fibronectin and fibronectin receptors on the surface of epithelial cells to bind and possibly invade the nasal epithelial cells.

Alternate JournalClin. Immunol. Immunopathol.