Lactoferrin-derived Peptides Active towards Influenza: Identification of Three Potent Tetrapeptide Inhibitors

Sci Rep. 2017 Sep 6;7(1):10593. doi: 10.1038/s41598-017-10492-x.

Abstract

Bovine lactoferrin is a biglobular multifunctional iron binding glycoprotein that plays an important role in innate immunity against infections. We have previously demonstrated that selected peptides from bovine lactoferrin C-lobe are able to prevent both Influenza virus hemagglutination and cell infection. To deeper investigate the ability of lactoferrin derived peptides to inhibit Influenza virus infection, in this study we identified new bovine lactoferrin C-lobe derived sequences and corresponding synthetic peptides were synthesized and assayed to check their ability to prevent viral hemagglutination and infection. We identified three tetrapeptides endowed with broad anti-Influenza activity and able to inhibit viral infection in a concentration range femto- to picomolar. Our data indicate that these peptides may constitute a non-toxic tool for potential applications as anti-Influenza therapeutics.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Antiviral Agents / chemistry
  • Antiviral Agents / pharmacology*
  • Cell Line
  • Hemagglutination Tests
  • Hemagglutination, Viral / drug effects
  • Humans
  • Influenza, Human / drug therapy
  • Influenza, Human / immunology
  • Influenza, Human / virology
  • Lactoferrin / chemistry*
  • Magnetic Resonance Spectroscopy
  • Models, Molecular
  • Orthomyxoviridae / drug effects*
  • Peptides / chemistry
  • Peptides / pharmacology*
  • Protein Conformation
  • Structure-Activity Relationship

Substances

  • Antiviral Agents
  • Peptides
  • Lactoferrin