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Trinucleotide cassettes increase diversity of T7 phage-displayed peptide library

Journal Article · · BMC Biotechnology (Online)
 [1];  [2];  [3];  [4];  [3]
  1. National Cancer Institute, Frederick, MD (United States). Center for Cancer Research. Molecular Targets Development Program; National Cancer Institute, Frederick, MD (United States). SAIC-Frederick, Inc.; DOE/OSTI
  2. National Cancer Institute, Frederick, MD (United States). Center for Cancer Research. Molecular Targets Development Program; National Cancer Institute, Frederick, MD (United States). Werner H. Kirsten Studen Internship Program
  3. National Cancer Institute, Frederick, MD (United States). Center for Cancer Research. Molecular Targets Development Program
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Biosciences Division

Background: Amino acid sequence diversity is introduced into a phage-displayed peptide library by randomizing library oligonucleotide DNA. We recently evaluated the diversity of peptide libraries displayed on T7 lytic phage and M13 filamentous phage and showed that T7 phage can display a more diverse amino acid sequence repertoire due to differing processes of viral morphogenesis. Methods: In this study, we evaluated and compared the diversity of a 12-mer T7 phage-displayed peptide library randomized using codon-corrected trinucleotide cassettes with a T7 and an M13 12-mer phage-displayed peptide library constructed using the degenerate codon randomization method. Results: We herein demonstrate that the combination of trinucleotide cassette amino acid codon randomization and T7 phage display construction methods resulted in a significant enhancement to the functional diversity of a 12-mer peptide library. This novel library exhibited superior amino acid uniformity and order-of-magnitude increases in amino acid sequence diversity as compared to degenerate codon randomized peptide libraries. Comparative analyses of the biophysical characteristics of the 12-mer peptide libraries revealed the trinucleotide cassette-randomized library to be a unique resource. Conclusion: The combination of T7 phage display and trinucleotide cassette randomization resulted in a novel resource for the potential isolation of binding peptides for new and previously studied molecular targets.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division; National Institutes of Health (NIH)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1626539
Journal Information:
BMC Biotechnology (Online), Journal Name: BMC Biotechnology (Online) Journal Issue: 1 Vol. 7; ISSN 1472-6750
Publisher:
BioMed CentralCopyright Statement
Country of Publication:
United States
Language:
English

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Quantitative Assessment of Peptide Sequence Diversity in M13 Combinatorial Peptide Phage Display Libraries journal October 2002
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Phage display-derived peptides as therapeutic alternatives to antibodies journal June 2004
Interaction of Human Lactoferrin with Cell Adhesion Molecules through RGD Motif Elucidated by Lactoferrin-binding Epitopes journal August 2006
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Cited By (7)

Compositional Bias in Naïve and Chemically-modified Phage-Displayed Libraries uncovered by Paired-end Deep Sequencing journal January 2018
ProxiMAX randomization: a new technology for non-degenerate saturation mutagenesis of contiguous codons journal September 2013
TrimerDimer: an oligonucleotide-based saturation mutagenesis approach that removes redundant and stop codons journal September 2009
Biomathematical Description of Synthetic Peptide Libraries journal June 2015
Adhiron: a stable and versatile peptide display scaffold for molecular recognition applications journal March 2014
Construction of Nanobody Library in Mammalian Cells by Linear-double-stranded DNA Based AND Gate Genetic Circuit posted_content May 2020
DNA Libraries for the Construction of Phage Libraries: Statistical and Structural Requirements and Synthetic Methods journal February 2011

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