کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2051643 1074206 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Protection against DNA damage-induced apoptosis by the angiogenic factor thymidine phosphorylase
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Protection against DNA damage-induced apoptosis by the angiogenic factor thymidine phosphorylase
چکیده انگلیسی

Thymidine phosphorylase (TP) is involved both in pyrimidine nucleoside metabolism and in angiogenesis. TP also conferred the resistance to hypoxia-induced apoptosis of the cancer cells. In U937 cells, DNA damage-inducing agents significantly enhanced the expression of TP. Cell lines stably transfected with TP cDNA were more resistant to the DNA damage-inducing agents than the mock-transfected cells and showed augmented activity of Akt. The cytoprotective function of TP against DNA damage was independent of its enzymatic activity. The resistance to apoptosis was partially abrogated by treatment with the phosphatidyl inositol 3-kinase (PI3K) inhibitors, suggesting that the cytoprotective function of TP is mediated, at least in part, by regulation of the PI3K/Akt pathway. These findings indicate that TP expression in increased by various stress including DNA damage and that TP molecules confer resistance to DNA damage-induced apoptosis in cancer cells.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 580, Issue 5, 20 February 2006, Pages 1294–1302
نویسندگان
, , , , , , , , , , ,