Hyperforin is a prenylated phloroglucinol derivative which occurs in the plant Hypericum perforatum L. It has several medicinally important properties (antidepressant, anti-inflammatory, proapoptotic, antibacterial and antiangiogenic). To enable its medicinal use, it is necessary to investigate its potential genotoxic effect on human cell lines. We also observed an anticlastogenic effect of hyperforin towards the indirect mutagen benzo(a)pyrene. Benzo(a)pyrene is a widespread polycyclic aromatic hydrocarbon. We performed experiments on human tumor cell line HepG2, using the in vitro mammalian chromosome aberration test. We investigated two cytogenic parameters: the number of aberrant metaphases and the total number of chromosome aberrations. We found out that hyperforin was not genotoxic on human cell line HepG2. The second part of our results implies that hyperforin had an anticlastogenic effect against the indirect mutagen benzo(a)pyrene in our experimental conditions. In future we will continue our research by using another range of hyperforin concentrations, other cell lines and other chemical mutagens.
- MeSH
- antidepresiva terapeutické užití toxicita MeSH
- antiflogistika terapeutické užití toxicita MeSH
- antimutagenní látky terapeutické užití toxicita MeSH
- benzopyreny * chemie MeSH
- biomedicínský výzkum MeSH
- buněčné linie cytologie účinky léků MeSH
- buňky Hep G2 cytologie účinky léků MeSH
- chromozomální aberace * chemicky indukované účinky léků MeSH
- lidé MeSH
- statistika jako téma MeSH
- třezalka * chemie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
- přehledy MeSH
- MeSH
- adjuvancia imunologická MeSH
- antikarcinogenní látky MeSH
- antimutagenní látky MeSH
- antioxidancia * MeSH
- beta-glukany * MeSH
- imunologické faktory MeSH
- kometový test metody přístrojové vybavení využití MeSH
- konformace nukleové kyseliny * MeSH
- lidé MeSH
- magnetická rezonanční spektroskopie metody přístrojové vybavení MeSH
- plazmidy MeSH
- poškození DNA MeSH
- radioprotektivní látky MeSH
- Check Tag
- lidé MeSH
- MeSH
- antimutagenní látky MeSH
- chitosan analogy a deriváty MeSH
- elektroforéza v agarovém gelu metody využití MeSH
- farmakologické účinky - molekulární mechanismy MeSH
- konformace nukleové kyseliny * MeSH
- plazmidy MeSH
- Salmonella typhimurium * MeSH
- scavengery volných radikálů * MeSH
- Publikační typ
- práce podpořená grantem MeSH
Nowadays naturally occurring compounds with the potential antimutagenic and anticarcinogenic effects are of great importance for their prospective use in cancer chemoprevention and treatment. The new water soluble derivative of microbial polysaccharide beta-D-glucan-carboxymethyl glucan (CMG) belongs to such a category of natural substances. CMG isolated from the cell wall of baker's yeast Saccharomyces cerevisiae is included into the class of biopolymers known as biological response modifiers (BRMs) with a broad range of activities, above all ones interfering with cancer therapy. It was demonstrated on four experimental model systems that biological and consequential medicinal importance of CMG is based on the combined application with another active compound. In the Saccharomyces cerevisiae antimutagenicity assay CMG significantly reduced ofloxacin-induced mutagenicity in the yeast strain D7. CMG exerted bioprotective (anti-toxic and antimutagenic) effect after its simultaneos application with methyl methanesulphonate on the repair-deficient strain uvs10 of the unicellular green alga Chlamydomonas reinhardtii. In the Vicia sativa simultaneous phytotoxicity and anticlastogenicity assay CMG exerted statistically significant anticlastogenic efect against maleic hydrazide-induced clastogenicity in Vicia sativa L. Only in the Salmonella/microsome assay CMG did not exert statistically significant antigenotoxic effect, despite of the fact that it reduced 9-aminoacridine-induced mutagenicity in S. typhimurium TA97, but his(+) revertants decreasing was statistically significant only at the highest CMG concentration used. The data presented unambiguously documented that even biopolysaccharides (e.g., derivatives of beta-glucan) belonging to the most abundant class of natural biopolymers may contribute to cancer prevention and therapy.
