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- W2014131083 abstract "ROIs and their scavengers are associated with apoptosis induction by anticancer drugs and gamma-rays, but the details have not been clarified. We examined the effect of transfection of Mn-SOD antisense on apoptosis by 5-FU, PLM, CDDP and gamma-rays using nu/nu mice. After inoculation of Mn-SOD antisense-transfected SCC cells into the subcutis of each mouse's back, they slowly multiplied to form tumors sized 1,460 +/- 70 mm(3) at day 60, while control vector-transfected SCC cells rapidly multiplied, with a mean tumor size of 2,330 +/- 220 mm(3). Inversely, mice in the Mn-SOD antisense group survived longer (mean survival duration 94.4 +/- 12.7 days) compared to those in the empty vector group (67.3 +/- 6.8 days). After treatment with 5-FU (5 microg/day), PLM (50 microg/day), CDDP (10 microg/day) and gamma-rays (2 Gy/day), mean survival times were largely prolonged, to 126.3 +/- 22.7, 123.0 +/- 22.1, 136.3 +/- 24.0 and 143.0 +/- 20.8 days, respectively, while mean survival times in the empty vector group were 91.7 +/- 14.8, 85.7 +/- 13.3, 97.5 +/- 16.0 and 100.7 +/- 17.1 days, respectively. Immunohistologically, tumors in the Mn-SOD antisense group revealed additional nick end-labeled cells compared to those in the empty vector group. In comparison, strong expression of Bax, Bak and p21(waf1/cip1) and suppressed expression of Bcl-2, Bcl-X(L) and COX-2 were observed in the Mn-SOD antisense group and the expression pattern of these proteins was the inverse in the empty vector group. The increased expression of these proapoptotic proteins appeared to be p53-independent because p53 protein expression was not increased in the antisense group. These immunohistologic results were supported by Western blotting of each protein. In conclusion, Mn-SOD antisense transfection is advantageous for apoptosis induction of SCC cells by anticancer drugs and gamma-rays through induction of proapoptotic Bcl-2 family proteins and suppression of antiapoptotic protein expression." @default.
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- W2014131083 date "2001-11-15" @default.
- W2014131083 modified "2023-10-15" @default.
- W2014131083 title "Mn‐SOD antisense upregulates in vivo apoptosis of squamous cell carcinoma cells by anticancer drugs and γ‐rays regulating expression of the BCL‐2 family proteins, COX‐2 and p21" @default.
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- W2014131083 doi "https://doi.org/10.1002/ijc.1513" @default.
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