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In vivo selection of single-chain antibodies using a yeast two-hybrid system

Authors
Journal
Journal of Immunological Methods
0022-1759
Publisher
Elsevier
Publication Date
Volume
238
Identifiers
DOI: 10.1016/s0022-1759(00)00145-9
Keywords
  • Single-Chain Antibody
  • Yeast Two-Hybrid System
  • Library Screen
  • Transcription Factor
Disciplines
  • Biology

Abstract

Abstract The current methodology for screening libraries of single-chain fragments of immunoglobulin variable domains (sFvs) utilizes bacterial phage systems. We have developed a unique in vivo selection protocol combining a modified yeast two-hybrid assay with a novel prey vector expressing sFvs. The viability of the system is demonstrated with the screen of a sFv library cloned into a yeast two-hybrid prey vector for molecules that target the bait ATF-2, a member of the CREB/ATF family of transcriptional regulatory proteins. The isolated sFv was capable of recognizing ATF-2 in vitro on Western blots and in vivo in mammalian cells.

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