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November 15, 2013BiogerontologyOpen Access

A comparison of replicative senescence and doxorubicin-induced premature senescence of vascular smooth muscle cells isolated from human aorta

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Authors

ABAnna Bielak-ŻmijewskaMWMaciej WnukDPDorota Przybylska

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Overview

In vitro study reveals distinct cell cycle arrest and absent calcification in doxorubicin-treated human aortic VSMCs, suggesting drug-induced senescence does not accelerate vessel mineralization.

Key Points

  • To compare the cellular hallmarks of replicative senescence and doxorubicin-induced stress-induced premature senescence in human aortic vascular smooth muscle cells.
  • Cultured vascular smooth muscle cells (VSMCs) isolated from human aorta to induce replicative senescence (RS) through continuous passage.
  • Treated aortic VSMCs with the chemotherapeutic agent doxorubicin for 7 days to model stress-induced premature senescence (SIPS).
  • Measured cell cycle distribution and alkaline phosphatase activity to evaluate cell cycle arrest phases and calcification potential.
  • Cell cycle profiling demonstrated that 32% of doxorubicin-treated cells were arrested in the G2/M phase, whereas 73% of replicatively senescent cells were arrested in the G1 phase.
  • A 7-day treatment with doxorubicin induced typical senescence markers but did not trigger alkaline phosphatase activity or precocious calcification, which are characteristic features of replicative senescence.

Cite This Study

Bielak-Żmijewska et al. (2013) studied this question.

synapsesocial.com/papers/6a796a2702ab7a73dd02558dhttps://doi.org/10.1007/s10522-013-9477-9
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