Related Experiment Videos
Endotoxin receptors on mammalian cells
D C Morrison1, M G Lei, T Kirikae
1Department of Microbiology, University of Kansas Medical Center, Kansas City.
Immunobiology
|April 1, 1993
Summary
Researchers identified key membrane proteins that bind bacterial endotoxic lipopolysaccharides (LPS) on mammalian cells. These LPS-binding proteins are potential targets for treating septic shock and cancer.
Area of Science:
- Immunology
- Cell Biology
- Biochemistry
Background:
- Bacterial endotoxic lipopolysaccharides (LPS) trigger significant immune responses in mammals.
- Identifying cell surface receptors for LPS is crucial for understanding immune activation and developing therapies.
- Previous studies have yielded varying results, necessitating a consolidated overview.
Purpose of the Study:
- To identify and characterize specific membrane-localized receptors for bacterial endotoxic lipopolysaccharides (LPS) on mammalian cells.
- To summarize experimental findings, emphasizing results from the authors' laboratory.
- To reconcile differences in receptor identification across various research groups.
Main Methods:
- Review and synthesis of experimental data from multiple laboratories.
- Focus on identifying LPS-binding proteins on the cell membrane.
- Comparison of results obtained using different experimental techniques.
Main Results:
- Several LPS-binding proteins are emerging as dominant candidates for the functional LPS receptor.
- Key candidates include proteins of 70-80 kDa and 30-40 kDa.
- Other important membrane proteins involved in LPS response include CD14, CD11/18 adhesins, and a 95 kDa scavenger receptor.
Conclusions:
- Despite methodological differences, a consensus is forming on key LPS receptor candidates.
- Identification of specific LPS targets has significant implications for immunotherapy.
- Potential therapeutic applications include treating septic shock and possibly cancer.