Russian Journal of Bioorganic Chemistry

, 35:711

New polypeptide components from the Heteractis crispa sea anemone with analgesic activity

  • S. A. Kozlov
  • Ya A. Andreev
  • A. N. Murashev
  • D. I. Skobtsov
  • I. A. D’yachenko
  • E. V. Grishin
Experimental Article

DOI: 10.1134/S1068162009060065

Cite this article as:
Kozlov, S.A., Andreev, Y.A., Murashev, A.N. et al. Russ J Bioorg Chem (2009) 35: 711. doi:10.1134/S1068162009060065

Abstract

Two new polypeptide components which exhibited an analgesic effect in experiments on mice were isolated from the Heteractis crispa sea tropical anemone by the combination of chromatographic methods. The APHC2 and APHC3 new polypeptides consisted of 56 amino acid residues and contained six cysteine residues. Their complete amino acid sequence was determined by the methods of Edman sequencing, mass spectrometry, and peptide mapping. An analysis of the primary structure of the new peptides allowed for their attribution to a large group of trypsin inhibitors of the Kunitz type.

An interesting biological function of the new polypeptides was their analgesic effect on mammals, which is possibly realized via the modulation of the activity of the TRPV1 receptor and was not associated with the residual inhibiting activity towards trypsin and chymotrypsin. The analgesic activity of the APHC3 polypeptide was measured on the hot plate model of acute pain and was significantly higher than that of APHC2. Methods of preparation of the recombinant analogues were created for both polypeptides.

Key words

the Heteractis crispa sea anemonepolypeptide inhibitors of the Kunitz type, structure, analgesic activityfunctional expression

Abbreviations

ASIC

proton-sensitive channel

BPTI

bovine pancreatic trypsin inhibitor

EDTA

ethylenediaminetetraacetic acid

IPTG

isopropyl-β-D-1-thiogalatopyranoside

TFA

trifluoroacetic acid

TRPV1

vanilloid receptor 1

Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • S. A. Kozlov
    • 1
  • Ya A. Andreev
    • 1
  • A. N. Murashev
    • 2
  • D. I. Skobtsov
    • 2
  • I. A. D’yachenko
    • 2
  • E. V. Grishin
    • 1
  1. 1.Shemyakin-Ovchinnikov Institute of Bioorganic ChemistryRussian Academy of SciencesMoscowRussia
  2. 2.Branch of the Shemyakin-Ovchinnikov Institute of Bioorganic ChemistryPushchino Division Russian Academy of SciencesPushchino, Moscow oblastRussia