Published in
International Journal of Oncology
5-Fluorouracil (5FU) exposure can lead to both G1/S arrest and apoptosis induction which are dependent of P53 induction. The human papilloma virus oncoproteins (HPV), E6 and E7, inactivate respectively P53 and Rb. P53 degradation by E6 protein, leads to lack of G1/S arrest after genotoxic stress. Overexpression of E7 protein prevents P53-induced G1...
Marc Diederich
Published in
International Journal of Oncology
The hematopoietic transcription factor GATA-1 regulates the expression of several genes associated with differentiation of erythroid cells. We show here the inhibitory effect of tumor necrosis factor α (TNFα), a proinflammatory cytokine, on hemoglobinization and erythroid transcription factor GATA-1 expression in erythroleukemia (HEL) as well as in...
Marie-Hélène Teiten Francois Gaascht Cronauer, Marcus Henry, Estelle Dicato, Mario Marc Diederich
Published in
International Journal of Oncology
Activation of the Wingless (Wnt)/ß-catenin signaling pathway contributes to prostate tumorigenesis and metastasis. Depending of the stage of prostate cancer development, current drug therapies are of limited efficiency, so that prevention with natural compounds appears as an attractive strategy especially due to the slow progressive development of ...
Marc Diederich
Published in
International Journal of Oncology
Garlic-derived organo sulphur compounds such as diallylsulfides provide a significant protection against carcinogenesis. Chemically synthesized, and highly pure diallylsulfides with a chain of 1-4 sulphur atoms, as well as a range of control compounds, were employed to investigate the influence of these agents on cell viability, cell cycle arrest a...
Viry, Elodie Viry, Elodie Kirsch, Gilbert Jacob, Claus Marc Diederich Bagrel, Denyse
Published in
International Journal of Oncology
For many years, in vitro and in vivo studies have reported that organosulfur compounds (OSCs), naturally found in Allium vegetables, are able to suppress the proliferation of various tumor cells. In spite of recent advances, the specific molecular mechanisms involved in OSC activity are still unclear. Considering the antiproliferative effects obser...
Published in
International Journal of Oncology
Photodynamic therapy has clinical indications in treatment of localized cancers and could be interesting for eradication of local recurrence of chemoresistant tumors. In the present study, the intracellular accumulation and distribution of chlorin e6 was investigated in MCF-7 and in P-glycoprotein overexpressing, doxorubicin resistant MCF-7/DXR cel...
