The molecular basis of E. coli colonization of the large intestine will be investigated using a mouse model. Mutants of normal human fecal strains of E. coli, which have an impaired ability to colonize the large intestine as a result of limited genetic manipulation and which possess well-defined altered surface properties will be used to investigate microbial interaction with the mucous gel blanket of the large intestine. Bacterial binding of soluble mucous gel glycoproteins and bacterial adhesion to immobilized mucous gel glycoproteins will be assessed in vitro and compared to in vivo colonizing ability. The bacterial surface components (adhesins) and individual mucous gel components (receptors) involved in the interaction will be isolated and biochemically characterized. The overall objective of the proposed research is to characterize bacterial-mucous gel interactions and to clarify the role of the mucous gel in E. coli colonization of the large intestine.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI016370-06
Application #
3126642
Study Section
Bacteriology and Mycology Subcommittee 1 (BM)
Project Start
1980-09-01
Project End
1986-08-31
Budget Start
1985-09-01
Budget End
1986-08-31
Support Year
6
Fiscal Year
1985
Total Cost
Indirect Cost
Name
University of Rhode Island
Department
Type
Schools of Arts and Sciences
DUNS #
135531015
City
Kingston
State
RI
Country
United States
Zip Code
Utley, M; Franklin, D P; Krogfelt, K A et al. (1998) A Salmonella typhimurium mutant unable to utilize fatty acids and citrate is avirulent and immunogenic in mice. FEMS Microbiol Lett 163:129-34
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