Research Paper Volume 8, Issue 10 pp 2392—2406

Transgenic expression of cyclooxygenase-2 (COX2) causes premature aging phenotypes in mice

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Figure 8. (A) and (B) Adult mouse lung fibroblasts from control and COX2 transgenic mice were incubated with 4-hydroxytamoxifen for 24 hours to induce COX2 expression in transgenic fibroblasts. The cells were cultured in the regular culture medium for 48 hours before SA-β-Gal staining. Representative pictures from 3 independent experiments are shown. Quantification results are shown in (C). (D-F) Western blot analysis of COX2 and p53 in pancreas (D), skin (E), and muscle (F) tissues of control and COX2 transgenic littermates.