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Affinity-based screening of combinatorial libraries using automated, serial-column chromatography

D M Evans1, K P Williams, B McGuinness

  • 1PerSeptive Biosystems, Framingham, MA 01701, USA.

Nature Biotechnology
|April 1, 1996
PubMed
Summary
This summary is machine-generated.

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We developed an automated chromatography method to screen compound libraries for target molecule affinity. This technique successfully identified specific peptides, demonstrating its potential for high-throughput screening of diverse chemical libraries.

Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Drug Discovery

Background:

  • Screening compound libraries for molecules with specific target affinity is crucial for drug discovery.
  • Existing methods can be time-consuming and lack efficiency for large-scale screening.

Purpose of the Study:

  • To develop and validate an automated serial chromatographic technique for high-throughput screening of compound libraries.
  • To assess the method's ability to identify peptides with predetermined affinity for target molecules.

Main Methods:

  • An automated serial chromatographic system was designed, coupling a target molecule-immobilized column with a reversed-phase column.
  • Combinatorial peptide libraries were screened, with target-bound peptides isolated and sequenced.
  • The system was tested using a monoclonal antibody against beta-endorphin and bacterial lipopolysaccharide (LPS).

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Main Results:

  • A single peptide (YGGFL) with high affinity for the anti-beta-endorphin antibody was identified from approximately 5800 peptides.
  • The technology demonstrated applicability in selecting peptides with affinity for bacterial lipopolysaccharide (LPS).

Conclusions:

  • The automated serial chromatographic technique provides an efficient platform for high-throughput screening of compound libraries.
  • This method has broad potential applications in identifying bioactive compounds from chemical libraries and natural products.