O-desmethylangolensin inhibits the proliferation of human breast cancer MCF-7 cells by inducing apoptosis and promoting cell cycle arrest.
Seoul, South Korea. In Oncol Lett, 31 Dec 2013
Of the G1/S phase-related proteins, O-DMA modulated the cyclin-dependent kinases (CDKs), with a decrease in CDK2 and CDK4 and an increase in CDK6, and downregulated cyclin D and E. With respect to the G2/M-related proteins, O-DMA caused a reduction in CDK1, together with a slight increase in cyclin A and B. In addition, O-DMA downregulated p21(Cip1) and p27(Kip1), but not p16(INK4a) and p15(INK4b), and interacted with the CDK6-cyclin D and CDK1-cyclin B complexes.
Coordination of Cell Proliferation and Cell Fate Determination by CES-1 Snail.
Martinsried, Germany. In Plos Genet, 31 Oct 2013
gene, which encodes a Cdc25-like phosphatase, thereby enhancing the block in NSM neuroblast division caused by the partial loss of cya-1, which encodes Cyclin A. Our results indicate that CDC-25.2 and CYA-1 control specific cell divisions and that the over-expression of the ces-1 gene leads to incorrect regulation of this functional 'module'.
MG132, a proteasome inhibitor, induces apoptosis in tumor cells.
Chengdu, China. In Asia Pac J Clin Oncol, Mar 2013
There are many cancer-related molecules in which the protein levels present in cells are regulated by a proteasomal pathway; for example, tumor inhibitors (P53, E2A, c-Myc, c-Jun, c-Fos), transcription factors (transcription factor nuclear factor-kappa B, IκBα, HIFI, YYI, ICER), cell cycle proteins (cyclin A and B, P27, P21, IAP1/3), MG132 induces cell apoptosis through formation of reactive oxygen species or the upregulation and downregulation of these factors, which is ultimately dependent upon the activation of the caspase family of cysteine proteases.
Control of sleep by cyclin A and its regulator.
New York City, United States. In Science, Apr 2012
We show that cyclin A (CycA) and regulator of cyclin A1, essential cell cycle factors, function in postmitotic neurons to promote sleep in Drosophila melanogaster.
How APC/C-Cdc20 changes its substrate specificity in mitosis.
Cambridge, United Kingdom. In Nat Cell Biol, 2011
Cdc20 requires APC3 and APC8 to bind and activate the APC/C when the spindle assembly checkpoint is satisfied, but only APC8 when active, and APC10 is crucial for the destruction of cyclin B1 and securin, but not cyclin A