Cytotoxicity and glycan-binding properties of an 18 kDa lectin isolated from the marine sponge Halichondria okadai

  • Ryo Matsumoto
  • , Yuki Fujii
  • , Sarkar M.A. Kawsar
  • , Robert A. Kanaly
  • , Hidetaro Yasumitsu
  • , Yasuhiro Koide
  • , Imtiaj Hasan
  • , Chihiro Iwahara
  • , Yukiko Ogawa
  • , Chang Hun Im
  • , Shigeki Sugawara
  • , Masahiro Hosono
  • , Kazuo Nitta
  • , Jiharu Hamako
  • , Taei Matsui
  • , Yasuhiro Ozeki

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

A divalent cation-independent lectin-HOL-18, with cytotoxic activity against leukemia cells, was purified from a demosponge, Halichondria okadai. HOL-18 is a 72 kDa tetrameric lectin that consists of four non-covalently bonded 18 kDa subunits. Hemagglutination activity of the lectin was strongly inhibited by chitotriose (GlcNAcβ1-4GlcNAcβ1-4GlcNAc), fetuin and mucins from porcine stomach and bovine submaxillary gland. Lectin activity was stable at pH 4-12 and temperatures lower than 60 °C. Frontal affinity chromatography with 16 types of pyridylaminated oligosaccharides indicated that the lectin had an affinity for N-linked complex-type and sphingolipid-type oligosaccharides with N-acetylated hexosamines and neuramic acid at the non-reducing termini. The lectin killed Jurkat leukemia T cells and K562 erythroleukemia cells in a dose- and carbohydrate-dependent manner.

Original languageEnglish
Pages (from-to)323-338
Number of pages16
JournalToxins
Volume4
Issue number5
DOIs
Publication statusPublished - 05-2012

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Health, Toxicology and Mutagenesis

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