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LIFE01200604005 Shri Somnath Ghosh - Homi Bhabha National ...

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SYNOPSIS<br />

Percentage Survival<br />

120<br />

100<br />

80<br />

60<br />

40<br />

20<br />

0<br />

(A)<br />

Carbon beam<br />

Oxygen beam<br />

Con 1 Gy 2 Gy<br />

Irradiation Dose<br />

Average H2Ax foci per cell<br />

26<br />

24<br />

22<br />

20<br />

18<br />

16<br />

14<br />

12<br />

10<br />

8<br />

6<br />

4<br />

2<br />

0<br />

(B)<br />

100%<br />

22%<br />

10%<br />

Carbon<br />

Con<br />

1Gy 15m<br />

1Gy 4h<br />

61%<br />

23%<br />

10%<br />

Oxygen<br />

Average pATM foci per cell<br />

30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

(C)<br />

22%<br />

Carbon<br />

52%<br />

Con<br />

1Gy<br />

96%<br />

19%<br />

Oxygen<br />

Average ATR foci per cell<br />

40<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

(D)<br />

10%<br />

Carbon<br />

Con<br />

1Gy<br />

36%<br />

Oxygen<br />

Fig.3.3I Comparison of carbon and oxygen beam irradiation induced signaling. (A)<br />

Graph represents Clonogenic Cell Survival of A 549 cells irradiated with 1 or 2Gy carbon<br />

or oxygen beam. Data represents means ± SD of three independent experiments. (B-D)<br />

Graphs represent average numbers of foci per cell of γ-H2AX, p-ATM and p-ATR<br />

respectively, percentage of cells showing the foci is marked above the bars. At least 100<br />

cells per experiment were analyzed from three independent experiments. Data represents<br />

means ± SD of three independent experiments.<br />

19

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