Title:Functional Evaluation of Anti-TNF-α Affibody Molecules in Biochemical Detection and Inhibition to Signalling Pathways of a Synovial Cell
Volume: 22
Issue: 9
Author(s): Seiji Shibasaki*, Miki Karasaki, Kiyoshi Matsui and Tsuyoshi Iwasaki
Affiliation:
- Department of Internal Medicine, Hyogo College of Medicine, Mukogawa-cho, Nishinomiya, 663-8501,Japan
Keywords:
Affibody, TNF-α, synovial cell, IL-6, MMP-3, Rheumatoid Arthritis (RA).
Abstract:
Background: An affibody molecule obtained from a bioengineered staphylococcal protein
was previously shown to act as an affinity binder for a wide range of targets and develop Tumour Necrosis
Factor α (TNF-α)-binding clones.
Methods: In this study, we demonstrated that affibody molecules against TNF-α could bind to recombinant
TNF-α on the membrane for biochemical detection. In addition, we examined whether the
affibody molecules could block binding between recombinant TNF-α and its receptor on MH7A synovial
cells.
Results: When a TNF-α-binding affibody was added, the production level of inflammatory mediators
IL-6 and MMP-3 in MH7A were found to decrease up to 44%. Additionally, proliferation of synovial
cells was also inhibited by the addition of TNF-α to cultivation media.
Conclusion: These results suggest that affibody molecules against TNF-α could be candidate molecules
for the detection of TNF-α during biochemical analysis and pharmacotherapy for rheumatoid
arthritis.