Cancer associated fibroblasts (CAFs) actively contribute to the growth and invasion of cancer cells. In recent years, the G protein estrogen receptor (GPER) has been largely involved in the estrogenic signals in diverse types of normal and tumor cells. In CAFs, GPER was localized into the nucleus, however the molecular mechanisms which regulate its nuclear shuttle remain to be clarified.
View Article and Find Full Text PDFCav-1 is an essential structural constituent of caveolae implicated in mitogenic signaling, oncogenesis, angiogenesis, neurodegenerative diseases and senescence. Its role as a tumor suppressor gene or as a tumor promoter seems to strictly depend on cell type and tumor stage/grade. The high expression of Cav-1 in some tumors in vivo, amongst which lung adenocarcinoma, is associated with increased tumor aggressiveness, metastatic potential and suppression of apoptosis.
View Article and Find Full Text PDFNaphthalimmide (NI) and 1,4,5,8-naphthalentetracarboxylic diimide (NDI) derivatives were synthesized and evaluated for their antiproliferative activity. NDI derivatives 1-9 were more cytotoxic than the corresponding NI derivatives 10-18. The molecular mechanisms of 1 and 2 were investigated in comparison to mitonafide.
View Article and Find Full Text PDFThe c-Jun N-terminal kinase (JNK) has been shown to mediate tamoxifen-induced apoptosis in breast cancer cells. However, the downstream mediators of the JNK pathway linking tamoxifen to effectors of apoptosis have yet to be identified. In this study, we analysed whether c-Jun, the major nuclear target of JNK, has a role in tamoxifen-induced apoptosis of SkBr3 breast cancer cells.
View Article and Find Full Text PDFVinorelbine (VNR) is a semi-synthetic vinca alkaloid known to exert its antitumour activity by interfering with the polymerisation of tubulin. It has shown a broad spectrum of activity in some advanced carcinomas of lung, breast and ovary. This report demonstrates for the first time the antiproliferative effect of VNR and its molecular mechanism in human osteosarcoma in vitro.
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