Cytotoxic, anti-proliferative and apoptosis activity of l-amino acid oxidase from malaysian cryptelytrops purpureomaculatus (cp-laao) venom on human colon cancer cells

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Abstract

The aim of this study is to investigate the potential anti-cancer activity of L-amino acid oxidase (CP-LAAO) purified from the venom of Cryptelytrops purpureomaculatus on SW480 and SW620 human colon cancer cells. Mass spectrometry guided purification was able to identify and purify CP-LAAO. Amino acid variations identified from the partial protein sequence of CP-LAAO may suggest novel variants of these proteins. The activity of the purified CP-LAAO was confirmed with o-phenyldiamine (OPD)-based spectrophotometric assay. CP-LAAO demonstrated time- and dose-dependent cytotoxic activity and the EC50 value was determined at 13 µg/mL for both SW480 and SW620 cells. Significant increase of caspase-3 activity, reduction of Bcl-2 levels, as well as morphological changes consistent with apoptosis were demonstrated by CP-LAAO. Overall, these data provide evidence on the potential anti-cancer activity of CP-LAAO from the venom of Malaysian C. purpureomaculatus for therapeutic intervention of human colon cancer.

Original languageEnglish
Article number1388
Number of pages16
JournalMolecules
Volume23
Issue number6
DOIs
Publication statusPublished - 8 Jun 2018

Keywords

  • Apoptosis
  • Cryptelytrops purpureomaculatus
  • Cytotoxicity
  • Human colon cancer cells
  • L-amino acid oxidase

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