AI Article Synopsis
- A single-chain antibody fragment (1C10 scFv) against digoxin was cloned using a new baculovirus transfer system, outperforming E. coli in yield.
- The procaryotic version retained a similar affinity to the original antibody, while the eucaryotic version had lower affinity but matched the specificity of the mAb.
- The half-lives of the digoxin:scFv complexes suggest potential therapeutic applications for this antibody fragment.
Article Abstract
A gene encoding a single-chain antibody fragment directed against digoxin (named 1C10 scFv) was cloned in two expression systems. For this purpose, a new baculovirus transfer cassette fully compatible with the procaryotic pHEN vector was constructed. Baculovirus production led to higher yield than did Escherichia coli expression. The procaryotic fragment showed variations in the fine specificity profile but an affinity constant nearly identical to that of the 1C10 Fab, whereas the eucaryotic scFv fragment had a lower affinity with a specificity profile identical to original mAb. The half-lives of the digoxin:scFv complexes and the global specificity are compatible with therapeutic use of this antibody fragment.
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| http://dx.doi.org/10.1016/s0014-5793(98)00029-5 | DOI Listing |
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