Journal of Natural Medicines

, Volume 63, Issue 1, pp 32–40

In vivo growth-inhibition of Sarcoma 180 by an α-(1 → 4)-glucan–β-(1 → 6)-glucan-protein complex polysaccharide obtained from Agaricus blazei Murill

  • Maria Leônia Costa Gonzaga
  • Daniel Pereira Bezerra
  • Ana Paula Negreiros Nunes Alves
  • Nylane Maria Nunes de Alencar
  • Rodney de Oliveira Mesquita
  • Michael Will Lima
  • Sandra de Aguiar Soares
  • Cláudia Pessoa
  • Manoel Odorico de Moraes
  • Letícia Veras Costa-Lotufo
Original Paper

DOI: 10.1007/s11418-008-0286-4

Cite this article as:
Gonzaga, M.L.C., Bezerra, D.P., Alves, A.P.N.N. et al. J Nat Med (2009) 63: 32. doi:10.1007/s11418-008-0286-4

Abstract

Agaricus blazei Murrill, a native mushroom of Brazil, has been widely consumed in different parts of the world due to its anticancer potential. This effect is generally attributed to its polysaccharides; however, the precise structure of these has not been fully characterized. To better understand the relationship between polysaccharide structures and antitumor activity, we investigated the effect of the intraperitoneally (i.p.) or orally (p.o.) administered α-(1 → 4)-glucan–β-(1 → 6)-glucan-protein complex polysaccharide from A. blazei alone or in association with 5-fluorouracil (5-FU) in tumor growth using Sarcoma 180 transplanted mice. Hematological, biochemical, and histopathological analyses were performed in order to evaluate the toxicological aspects of the polysaccharide treatment. The polysaccharide had no direct cytotoxic action on tumor cells in vitro. However, the polysaccharide showed strong in vivo antitumor effect. Thus, the tumor growth-inhibitory effect of the polysaccharide is apparently due to host-mediated mechanisms. The histopathological analysis suggests that the liver and the kidney were not affected by polysaccharide treatment. Neither enzymatic activity of transaminases (AST and ALT) nor urea levels were significantly altered. In hematological analysis, leucopeny was observed after 5-FU treatment, but this effect was prevented when the treatment was associated with the polysaccharide. In conclusion, this polysaccharide probably could explain the ethnopharmacological use of this mushroom in the treatment of cancer.

Keywords

Agaricus blazeiα-(1 → 4)-glucan–β-(1 → 6)-glucan-protein complex polysaccharideAntitumor activitySarcoma 180Toxicity

Abbreviations

5-FU

5-Fluorouracil

ALT

Alanine aminotransferase

AST

Aspartate aminotransferase

COBEA

Colégio Brasileiro de Experimentação Animal, Brazil

FTIR

Fourier transform infra red

i.p.

Intraperitoneal route

MTT

3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide

NMR

Nuclear magnetic resonance

NK

Natural killer

p.o.

Oral route

Copyright information

© The Japanese Society of Pharmacognosy and Springer 2008

Authors and Affiliations

  • Maria Leônia Costa Gonzaga
    • 3
  • Daniel Pereira Bezerra
    • 1
  • Ana Paula Negreiros Nunes Alves
    • 2
  • Nylane Maria Nunes de Alencar
    • 1
  • Rodney de Oliveira Mesquita
    • 1
  • Michael Will Lima
    • 1
  • Sandra de Aguiar Soares
    • 3
  • Cláudia Pessoa
    • 1
  • Manoel Odorico de Moraes
    • 1
  • Letícia Veras Costa-Lotufo
    • 1
  1. 1.Department of Physiology and Pharmacology, School of MedicineFederal University of Ceará, UFCFortalezaBrazil
  2. 2.Department of Clinical OdontologyFederal University of CearáFortalezaBrazil
  3. 3.Department of Organic and Inorganic ChemistryFederal University of CearáFortalezaBrazil