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Chicken lung lectin is a functional C-type lectin and inhibits haemagglutination by influenza A virus

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  • Astrid Hogenkamp
  • Najiha Isohadouten
  • Sylvia S. N. Reemers
  • Roland A. Romjin
  • Wieger Hemrika
  • Mitchell R. White
  • Boris Tefsen
  • Lonneke Vervelde
  • Martin van Eijk
  • Edwin J. A. Veldhuizen
  • Henk P. Haagsman

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    Rights statement: Copyright 2008 Published by Elsevier B.V.

    Final published version, 432 KB, PDF document

http://www.sciencedirect.com/science/article/pii/S0378113507006396
Original languageEnglish
Pages (from-to)37-46
Number of pages10
JournalVeterinary Microbiology
Volume130
Issue number1-2
DOIs
Publication statusPublished - 27 Jul 2008

Abstract

Many proteins of the calcium-dependent (C-type) lectin family have been shown to play an important role in innate immunity. They can bind to a broad range of carbohydrates, which enables them to interact with ligands present on the surface of micro-organisms. We previously reported the finding of a new putative chicken lectin, which was predominantly localized to the respiratory tract, and thus termed chicken lung lectin (cLL). In order to investigate the biochemical and biophysical properties of cLL, the recombinant protein was expressed, affinity purified and characterized. Recombinant cLL was expressed as four differently sized peptides, which is most likely due to post-translational modification. Crosslinking of the protein led to the formation of two high-molecular weight products, indicating that cLL forms trimeric and possibly even multimeric subunits. cLL was shown to have lectin activity, preferentially binding to a-mannose in a calcium-dependent manner. Furthermore, cLL was shown to inhibit the haemagglutination-activity of human isolates of influenza A virus, subtype H3N2 and H1N1. These result show that cLL is a true C-type lectin with a very distinct sugar specificity, and that this chicken lectin could play an important role in innate immunity. (c) 2008 Published by Elsevier B.V.

    Research areas

  • SURFACTANT PROTEIN-A, CARBOHYDRATE-RECOGNITION DOMAIN, C-type lectin, chicken lung lectin, BETA, influenza A virus, CELLS, innate immunity, EXPRESSION, ALPHA, TETRANECTIN, BINDING-PROTEIN

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