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Identification and Characterization of Borrelia burgdorferi Complement-Binding Proteins
1Institute of Medical Microbiology and Infection Control, University Hospital of Frankfurt, Paul-Ehrlich-Str. 40, 60596, Frankfurt, Germany. Kraiczy@em.uni-frankfurt.de.
Methods in Molecular Biology (Clifton, N.J.)
|October 17, 2017
Summary
Borrelia burgdorferi acquires host proteins to evade the immune system. This study details a method to identify bacterial proteins that interact with complement regulator Factor H, aiding in understanding host immune evasion.
Area of Science:
- Microbiology
- Immunology
- Biochemistry
Background:
- Borrelia burgdorferi, the causative agent of Lyme disease, employs strategies to evade the human immune system.
- Acquisition of host-derived regulatory proteins is crucial for Borrelia burgdorferi survival and infection.
- Understanding these interactions is key to deciphering how spirochetes overcome complement-mediated innate immunity.
Purpose of the Study:
- To describe a methodology for detecting and characterizing Borrelia-derived proteins that interact with complement regulator Factor H.
- To provide insights into the molecular mechanisms of Borrelia burgdorferi's complement evasion strategies.
Main Methods:
- Preparation of Borrelia burgdorferi whole cell lysates.
- Separation of proteins using Tris-Tricine SDS-PAGE.
- Far western blotting technique utilizing purified Factor H as bait to detect interacting proteins.
Main Results:
- The study outlines a reliable Far western blotting protocol for identifying specific protein-protein interactions.
- This method allows for the detection of Borrelia-derived proteins that bind to human complement regulator Factor H.
Conclusions:
- The described methodology facilitates the identification of key bacterial proteins involved in complement evasion.
- Characterizing these interactions is essential for understanding Borrelia burgdorferi pathogenesis and developing potential therapeutic strategies.