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Interactions of CD55 with non-complement ligands
1Laboratory of Molecular Biophysics, Department of Biochemistry, South Parks Road, Oxford OX1 3QU, UK. susan@biop.ox.ac.uk
Biochemical Society Transactions
|November 21, 2002
Summary
Decay Accelerating Factor (CD55) regulates complement pathways and is exploited by pathogens like enteroviruses and E. coli for cell attachment. This review summarizes CD55 interactions with pathogens and its non-complement role with CD97.
Area of Science:
- Immunology
- Microbiology
- Cell Biology
Background:
- Decay Accelerating Factor (CD55) is a key regulator of complement system activation.
- CD55 is expressed on cells exposed to serum and plays a role in innate immunity.
- Pathogens frequently utilize host cell surface proteins to facilitate entry.
Purpose of the Study:
- To review the interactions between CD55 and various pathogens.
- To summarize the non-complement interactions between CD55 and CD97.
- To consolidate current knowledge on CD55's role in host-pathogen interactions.
Main Methods:
- Literature review of studies on CD55 and pathogen interactions.
- Analysis of research on CD55's role in complement regulation.
- Examination of studies detailing CD55-CD97 non-complementary binding.
Main Results:
- CD55 is commonly hijacked by pathogens, including enteroviruses and uropathogenic Escherichia coli, for cellular attachment.
- Pathogen binding to CD55 can inhibit complement-mediated lysis, promoting infection.
- Non-complement interactions between CD55 and CD97 are also significant.
Conclusions:
- CD55 plays a critical role in pathogen evasion of the immune system.
- Understanding CD55-pathogen interactions is crucial for developing novel therapeutic strategies.
- Further research into CD55's multifaceted roles, including non-complement functions, is warranted.