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In order to address the problem of the action of cytostatics on chromosome ends, telomere length was measured in human lymphocyte cultures exposed to mitomycin C (MMC) and bleomycin (BLM). Telomere-specific PNA probes were used for the quantitative estimation of the relative telomere length of each individual chromosome by fluorescence in situ(More)
The nucleo-protein structure of an intact telomere protects each chromosome from being recognized as a break and subsequently being degraded. The DNA component of this structure, the telomeric repeats, undergo attrition with every cell division, as well as in response to endogenous events, like oxidative stress. Exposure to exogenous damage promotes this(More)
Damage to telomeres induced by cytostatic therapy theoretically could generate telomere shortening and, subsequently, induce an additional genomic instability in neoplastic cells. Model experiments were carried out to examine this hypothesis. Cells of the T-ALL derived cell line CCRF-CEM were exposed to various different concentrations of Bleomycin (BLM) or(More)
So far, the problem of an influence of translocations on the telomeres of the involved chromosomes has not been addressed yet in human cells. Therefore, the telomeres of a karyotypically rather well characterized T-cell acute lymphoblastic leukemia (T-ALL) cell line (CCRF-CEM) with several marker chromosomes were examined using peptide nucleic acid (PNA)(More)
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