Hishot display--a new combinatorial display for obtaining target-recognizing peptides

PLoS One. 2013 Dec 27;8(12):e83108. doi: 10.1371/journal.pone.0083108. eCollection 2013.

Abstract

Display technologies are procedures used for isolating target-recognizing peptides without using immunized animals. In this study, we describe a new display method, named Hishot display, that uses Escherichia coli and an expression plasmid to isolate target-recognizing peptides. This display method is based on the formation, in bacteria, of complexes between a polyhistidine (His)-tagged peptide including random sequences and the peptide-encoding mRNA including an RNA aptamer against the His-tag. When this system was tested using a sequence encoding His-tagged green fluorescent protein that included an RNA aptamer against the His-tag, the collection of mRNA encoding the protein was dependent on the RNA aptamer. Using this display method and a synthetic library of surrogate single-chain variable fragments consisting of VpreB and Ig heavy-chain variable domains, it was possible to isolate clones that could specifically recognize a particular target (intelectin-1 or tumor necrosis factor-α). These clones were obtained as soluble proteins produced by E. coli, and the purified peptide clones recognizing intelectin-1 could be used as detectors for sandwich enzyme-linked immunosorbent assays. The Hishot display will be a useful method to add to the repertoire of display technologies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Base Sequence
  • Cell Surface Display Techniques / methods*
  • Enzyme-Linked Immunosorbent Assay / methods*
  • Escherichia coli / genetics*
  • Escherichia coli / metabolism
  • Genetic Vectors
  • Green Fluorescent Proteins / analysis
  • Molecular Sequence Data
  • Peptide Library

Substances

  • Peptide Library
  • Green Fluorescent Proteins

Grants and funding

This research was supported in part by the following grants: Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research (JSPS KAKENHI) (22590544) and Yokohama Foundation for Advancement of Medical Science (to ST). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.