PMID: 9543007May 23, 1998Paper

A form of anti-Tac(Fv) which is both single-chain and disulfide stabilized: comparison with its single-chain and disulfide-stabilized homologs

Protein Engineering
V RajagopalR J Kreitman

Abstract

Disulfide-stabilized Fvs (dsFvs) are recombinant proteins composed of a heavy-chain variable domain (VH) of an antibody connected via a disulfide bond to the light-chain variable domain (VL). In single-chain Fvs (scFvs), a peptide connector links VH and VL. The dsFv form of the anti-Tac monoclonal antibody which reacts with the alpha subunit of the IL2 receptor was recently reported to be more stable and to aggregate less during renaturation than anti-Tac(scFv). In addition, it could be produced in a better yield owing to less aggregation. However, the yields are still too low to permit the production of material for clinical trials in which the dsFv will be used to image or treat IL2 receptor (CD25)-containing tumors. To increase the efficiency by which VH and VL associate and form a disulfide bond during renaturation, we have prepared an Fv form of anti-Tac which is both single chain and disulfide stabilized (scdsFv). The recombinant protein is expressed in Escherichia coli, where it accumulates in inclusion bodies. Using inclusion body protein as the reference point, the yield of purified anti-Tac(scdsFv) was 13% compared with 2% for anti-Tac(dsFv). Anti-Tac(scdsFv) has equivalent binding affinity, immunoreactivity after rad...Continue Reading

Citations

May 16, 2012·Protein Engineering, Design & Selection : PEDS·Eve E WeatherillDavid P Humphreys
Dec 1, 2001·Expert Opinion on Biological Therapy·U BrinkmannP Hafkemeyer
Jul 12, 2011·Biochemical and Biophysical Research Communications·Yu-Ching LeeAn-Suei Yang
Feb 12, 2008·Journal of Molecular Biology·Dirk SaerensSerge Muyldermans
Jul 22, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Soichiro YamauchiHiroshi Morioka
Oct 16, 2020·International Journal of Molecular Sciences·Manali S SawantPeter M Tessier
Mar 23, 2000·Seminars in Radiation Oncology·D E Milenic

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