ArticleMolecular pharmaceutics2013
Molecular characterization and functional activity of an IL-15 antagonist MutIL-15/Fc human fusion protein.
Article in Molecular pharmaceutics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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10 authors at 4 institutions in 1 country.
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Abstract
Fc fusion proteins are a new emerging class of molecules for immune-targeted delivery of therapeutic proteins. Biophysical and bioanalytical characterization is critical for clinical development and delivery of therapeutic proteins. Here we report molecular and functional characterization of a recombinant human fusion protein Mutant IL-15/Fc. MutIL-15/Fc has a molecular weight of ∼95 kDa as determined by multiangle laser light scattering with online size exclusion chromatography and migrated at a faster rate (lower retention time) in gel filtration column. The kinetics of binding of MutIL-15/Fc to Fcγ receptor is best fitted in a bivalent modal with K(D1) 5 μM and K(D2) 9 μM determined by surface plasmon resonance (BIAcore). N-Glycoprofiling analysis revealed extensive glycosylation of MutIL-15/Fc. The Fc and IL-15 components in the MutIL-15/Fc are detected using the dual mode ELISA. The HT-2 cell proliferation inhibition assay is qualified as a quantitative in vitro marker functional assay. Molecular state changes associated with forced stress analyzed by SEC-MALS resulted in changes in bioactivity and Fc:Fcγ receptor interaction affinity. These data provide a systematic approach to molecular and functional characterization of the MutIL-15/Fc to establish product consistency and stability monitoring during storage and under drug delivery conditions.
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