Titre du document / Document title

Prostate cancer and inositol hexaphosphate : Efficacy and mechanisms

Auteur(s) / Author(s)

SINGH Rana P. ⁽¹⁾ ; AGARWAL Rajesh ^{(1 2)} ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Pharmaceutical Sciences, School of Pharmacy, University of Colorado Health Sciences Center, Denver, CO 80262, ETATS-UNIS
⁽²⁾ University of Colorado Cancer Center, University of Colorado Health Sciences Center, Denver, CO 80262, ETATS-UNIS

Résumé / Abstract

There are now extensive scientific data suggesting the potential role of dietary and non-dietary phytochemicals in the prevention and control of prostate cancer (PCA) growth and progression. PCA is a disease of elderly male populations with a relatively slower rate of growth and progression as compared to most other cancers and, therefore, is a candidate disease for preventive intervention. Overall, PCA growth and progression involve aberrant mitogenic and survival signaling and deregulated cell cycle progression, accompanied by gradual accumulation of genetic and epigenetic changes over a period of years. Several mechanisms, including overexpression of growth, survival and angiogenic factors and their receptors, together with a loss/decrease of tumor suppressor p53, retinoblastoma and cyclin-dependent kinase inhibitor, have been implicated in PCA growth and progression. Therefore, phytochemicals targeting these molecular events could have a promising role in PCA prevention and/or therapy. Inositol hexaphosphate (IP6) is a major constituent of most cereals, legumes, nuts, oil seeds and soybean. Taken orally as an over-the-counter dietary/nutrient supplement, and is recognised as offering several health benefits without any known toxicity. In vitro anticancer efficacy of IP6 has been observed in many human, mouse and rat prostate cancer cells. Completed studies also show that oral feeding of IP6 inhibits human PCA xenograft growth in nude mice without toxicity. In a recently completed pilot study, we observed similar preventive effects of IP6 on prostate tumorigenesis in the TRAMP model. Mechanistic studies indicate that IP6 targets mitogenic and survival signaling, as well as cell cycle progression, in PCA cells. IP6 is also shown to target molecular events associated with angiogenesis. Moreover, IP6 has pleiotropic molecular targets for its overall efficacy against PCA and, therefore, could be a suitable candidate agent for preventive intervention of this malignancy in humans.

Revue / Journal Title

Anticancer research   ISSN 0250-7005 

Source / Source

2005, vol. 25, n^o4, pp. 2891-2903 [13 page(s) (article)] (132 ref.)

Langue / Language

Anglais

Editeur / Publisher

International Institute of Anticancer Research, Attiki, GRECE  (1980) (Revue)

Mots-clés anglais / English Keywords

B-Vitamins ; Prostate disease ; Malignant tumor ; Urinary system disease ; Male genital diseases ; Signaling pathway ; Cancerology ; Bibliographic review ; Neovascularization ; Angiogenesis ; Cell death ; Apoptosis ; Cell cycle ; Survival ; Inositol ; Mechanism ; Treatment efficiency ; Prostate cancer ;

Mots-clés français / French Keywords

Vitamine B ; Prostate pathologie ; Tumeur maligne ; Appareil urinaire pathologie ; Appareil génital mâle pathologie ; Voie de signalisation ; Cancérologie ; Revue bibliographique ; Néovascularisation ; Angiogenèse ; Mort cellulaire ; Apoptose ; Cycle cellulaire ; Survie ; Inositol ; Mécanisme ; Efficacité traitement ; Cancer prostate ;

Mots-clés espagnols / Spanish Keywords

Vitamina B ; Prostata patología ; Tumor maligno ; Aparato urinario patología ; Aparato genital macho patología ; Cancerología ; Revista bibliográfica ; Neovascularización ; Angiogénesis ; Muerte celular ; Apoptosis ; Ciclo celular ; Sobrevivencia ; Inositol ; Mecanismo ; Eficacia tratamiento ; Cáncer de la próstata ;

Mots-clés d'auteur / Author Keywords

Inositol hexaphosphate ; prostate cancer ; mitogenic signaling ; cell survival signaling ; cell cycle progression ; apoptosis ; angiogenesis ; review ;

Localisation / Location

INIST-CNRS, Cote INIST : 19426, 35400013792321.0450