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Detection of complement activity by using a polysaccharide-protected membrane.

Costello¹, Evans, Evans

¹Centre for Molecular and Biomolecular Electronics, Coventry University, Coventry, UK

Enzyme and Microbial Technology

|February 26, 2000

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The complement system

Area of Science:

Immunology
Biophysics
Materials Science

Background:

The complement system is a key part of innate immunity, implicated in various diseases.
Understanding complement activation is crucial for developing new therapeutic strategies.

Purpose of the Study:

To investigate complement system activation using a novel membrane system.
To observe pore formation induced by complement activation in a phospholipid bilayer.

Main Methods:

A bilayer membrane composed of dioleoylphosphatidyl choline was created.
A protective polysaccharide gel layer (approx. 100 µm thick) was applied.
Pore formation was detected by measuring DC conductivity using Ag/AgCl electrodes.

Main Results:

Related Experiment Videos

Pore creation was observed upon complement activation in the blood sample.
The complement response was detected within 3 minutes of activator application.
The membrane's lifespan was limited by phospholipid hydrolysis.

Conclusions:

A novel, easily prepared membrane system effectively demonstrates complement-induced pore formation.
This system provides a suitable platform for studying complement component interactions and inhibitor kinetics.