- A cell-based assay for the detection of neutralizing antibodies against alemtuzumab.
A cell-based assay for the detection of neutralizing antibodies against alemtuzumab.
BioTechniques (2020-02-26)
Liaqat Ali, Gauri Saxena, Meleri Jones, Georgia R Leisegang, Luke Gammon, Sharmilee Gnanapavan, Gavin Giovannoni, Klaus Schmierer, David Baker, Angray S Kang
PMID32096651
ABSTRACT
Aim: The humanized anti-CD52 monoclonal antibody alemtuzumab depletes lymphocytes and is currently used to treat relapsing multiple sclerosis. During treatment, anti-alemtuzumab antibodies may develop and reduce effective lymphocyte depletion in future treatment cycles. Results: Alemtuzumab-Alexa Fluor 488 conjugate binding to the CHO-CD52 cell surface was inhibited by anti-alemtuzumab antibodies. Conclusion: In this proof-of-concept study, a CHO-CD52 cell line has been developed and used to detect the presence of anti-alemtuzumab neutralizing antibodies. This platform provides the basis of an assay for routine screening of serum for neutralizing antibodies from patients treated with alemtuzumab.
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