Resveratrol, an ingredient of wine, acts synergistically with Ara-C and tiazofurin in HL-60 human promyelocytic leukemia cells.

Resveratrol (RV), a naturally occurring stilbene derivative, is a potent free radical scavenger causing a number of biochemical and antineoplastic effects. It was shown to induce differentiation and apoptosis in leukemia cells and was also identified as an inhibitor of ribonucleotide reductase (RR), a key enzyme of DNA synthesis. In this study, we report about the biochemical effects of RV in HL-60 human promyelocytic leukemia cells.

Gallic acid inhibits ribonucleotide reductase and cyclooxygenases in human HL-60 promyelocytic leukemia cells.

Gallic acid (GA) is a naturally occurring polyhydroxyphenolic compound and an excellent free radical scavenger. In this study, we examined its cytotoxic and biochemical effects on the human HL-60 promyelocytic leukemia cell line. GA caused a significant imbalance of deoxynucleosidetriphosphate (dNTP) pool sizes, indicating ribonucleotide reductase inhibition.

Effects of heavy water (D2O) on human pancreatic tumor cells.

Background: Pancreatic cancer constitutes an entity which is difficult to treat and, therefore, mostly fatal. Since heavy water (deuterium oxide, D2O) was shown to be active in various cancer cell lines in vitro and in vivo, we now investigated its effects in human pancreatic tumor cells.

Materials And Methods: The cytotoxic effects of D2O were examined in three pancreatic cancer cell lines (AsPC-1, BxPC-3 and PANC-1).

Cytotoxic effects of novel amphiphilic dimers consisting of 5-fluorodeoxyuridine and arabinofuranosylcytosine in cross-resistant H9 human lymphoma cells.

Various amphiphilic heterodinucleoside phosphates have recently been synthesized in order to overcome drug resistance. These agents contain 5-fluorodeoxyuridine (5-FdUrd) and arabinofuranosylcytosine (Ara-C). We now investigated the action of two of these novel dimers (#2 and #10) in sensitive and 5-FdUrd/Ara-C cross-resistant H9 human lymphoma cells.

Synergistic action of resveratrol, an ingredient of wine, with Ara-C and tiazofurin in HL-60 human promyelocytic leukemia cells.

Objective: Resveratrol, a naturally occurring stilbene derivative, is a potent free-radical scavenger causing a number of biochemical and antineoplastic effects. It was shown to induce differentiation and apoptosis in leukemia cells. Resveratrol was also identified as an inhibitor of ribonucleotide reductase (RR), a key enzyme of DNA synthesis.