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Acquisition of replicative immortality is currently regarded as essential for malignant transformation. This is achieved by activating a telomere lengthening mechanism (TLM), either telomerase or alternative lengthening of telomeres, to counter normal telomere attrition. However, a substantial proportion of some cancer types, including glioblastomas, liposarcomas, retinoblastomas, and osteosarcomas,...
Under standard culture conditions, normal human mammary epithelial cells (HMECs) divide a limited number of times before proliferation ceases in a growth-arrested state referred to as selection. Cells that have undergone spontaneous loss of p16INK4a expression due to hypermethylation of the p16INK4a CpG island emerge from selection and proliferate for an extended, but limited, period before senescence...
Stanniocalcin (STC) is a glycoprotein hormone that is secreted by the corpuscle of Stannius, an endocrine gland of bony fish. It prevents hypercalcemia via mechanisms including inhibition of calcium uptake across the gills. Mammalian homologues have recently been reported but their function is unknown. Here we report the genomic organization and the transcription start site of the human STC gene and...
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