133 – The anticancer Agent PB-100, Selectively Active on Malignant Cells, Inhibits Multiplication of 16 Malignant Cell Lines, even Multidrug Resistant

Genetics and Molecular Biology 2000, vol 23 nº1, pp. 29. Available in English only ABSTRACT IN ENGLISH: The plant-derived anticancer agent PB-100 (Beljanski® Pao extract) selectively destroys cancer cells, even when multidrug resistant; yet, it does not inhibit normal (non-malignant) cell multiplication. Testing of PB-100 on sixteen cell lines, several multidrug resistant, as well as on five normal cell lines, confirmed our previous results. Flavopereirine and dihydroflavopereirine, the active principles of PB-100, were chemically synthesized and displayed the same selectivity for tumor cells as the purified plant extract, being active at even lower concentrations. List of cell lines tested : brain (4), ovary (2), breast (2), prostate thyroid (2), colon (2), pancreatic, hepatic, kidney, skin, liver ABSTRACT IN PORTUGUES : O agente anticancerigeno de origem vegetal PB-100 destroi seletivamente as células cancerosas, mesmo quando elas sao resistentes a multiplas drogas; no entanto, ele nao inibe a multiplicacao de células normais (nao malignas). O teste do PB-100 em 16 linhagens de células malignas, assim como em 5 linhagens de células normais, confirmou nosso resultados prévios. Flavopereirine e dihidroflavopereirine, os principios ativos do PB-100, foram sintetizados quimicamente e mostraram a mesma seletividade para as células tumorais que o extrato purificado da planta, sendo ativos em concentraçoes ainda menores.Voir le document