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  • Title: Antigen binding and stability properties of non-covalently linked anti-CD22 single-chain Fv dimers.
    Author: Arndt MA, Krauss J, Rybak SM.
    Journal: FEBS Lett; 2004 Dec 17; 578(3):257-61. PubMed ID: 15589829.
    Abstract:
    By varying linker length and domain orientation three multivalent derivatives of a monovalent anti-CD22 single-chain fragment variable (scFv) antibody were generated. Shortening the linker of the V(H)-V(L) oriented scFv to 5 or 0 residues resulted in the formation of diabodies or a mixture of tetramers and trimers, respectively. Unexpectedly, a V(L)-0-V(H) scFv assembled to homogenous dimers, remained substantially more stable than the V(H)-5-V(L) diabody when incubated in human serum at 37 degrees C, and retained its dimeric state when concentrated up to 4 mg/ml. These properties suggest the V(L)-0-V(H) scFv could become an attractive vehicle for the selective delivery of multiple effector molecules to CD22(+) tumor cells.
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