Published in Cancer Letters
Glutathione S-transferases (GST) are involved in cellular protection against xenobiotics, oxidative stress as well as in resistance against chemotherapeutic compounds such as doxorubicin. Levels of human placental type GSTP1-1 are known to be increased in many tumors and hematopoietic diseases. In this work, we compare transcriptional mechanisms in...
Published in Cancer Letters
Heat shock response is an adaptive response, which helps the cells to regulate their physiological homeostasis under stress. Here we show that the natural compound curcumin induces nuclear translocation of the heat shock transcription factor (HSF)-1, its binding to a heat shock regulatory element (HSE), and the subsequent activation of the hsp70 pr...
Published in Cancer Letters
Chemoprevention is a promising anti-cancer approach with reduced secondary effects in comparison to classical chemotherapy. Curcumin, one of the most studied chemopreventive agents, is a natural compound extracted from Curcuma longa L. that allows suppression, retardation or inversion of carcinogenesis. Curcumin is also described as an anti-tumoral...
Published in Cancer Letters
Cells reprogram their metabolism very early during carcinogenesis; this event is critical for the establishment of other cancer hallmarks. Many oncogenes and tumor suppressor genes control metabolism by interplaying with the existing nutrient-sensing intracellular pathways. Mammalian target of rapamycin, mTOR, is emerging as a collector and sorter ...
Published in Cancer Letters
Histone acetyltransferases (HATs) and histone deacetylases (HDACs) regulate cellular processes by modifying the acetylation status of many proteins. Pathologically altered HDAC activity contributes to cancer development and thus characterization of novel acetylation modulators is important for future anti-cancer therapies. In this study, we identif...
Published in Cancer Letters
Up-regulation of tumor necrosis factor alpha (TNFalpha) is linked to solid tumors as well as to hematologic disorders including different forms of anemia and multiple myeloma. This cytokine was shown to contribute to inhibition of erythroid maturation mechanisms which are characterized by the expression of specific genes regulated by GATA-1 and NF-...
Published in Cancer Letters
Polysulfanes show chemopreventive effects against gastrointestinal tumors. We identified diallyl tetrasulfide and its derivative, dibenzyl tetrasulfide (DBTTS), to be mitotic inhibitors and apoptosis inducers. Here, we translate their application in colorectal cancer (CRC). MALDI-TOF-MS analysis identified both compounds as reversible tubulin binde...
Published in Cancer Letters
Constitutive activity of kinases has been reported in many types of cancers, so that inhibition of "onco-kinases" became a validated anti-cancer strategy. We found that the polyphenol 13c, a tri-vanillate derivative, inhibited kinase phosphorylation in leukemia cells. P-JAK2, P-Src and P-PI3Kp85 inhibition occurred independently of phosphatase invo...
Published in Cancer Letters
Cancer remains a major public health problem in our society. The development of potent novel anti-cancer drugs selective for tumor cells is therefore still required. Deregulation of the epigenetic machinery including DNA methylation, histone modifications and non-coding RNAs is a hallmark of cancer, which provides potential new therapeutic targets....
