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LIFE01200604005 Shri Somnath Ghosh - Homi Bhabha National ...

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SYNOPSIS<br />

Fig. 3.3A Clonogenic Cell Survival of A 549 cells irradiated with 1, 2 or 3Gy carbon<br />

Beam or γ-radiation. Data represents means ± SD of three independent experiments.<br />

(A)<br />

(B)<br />

Average y-H2AX foci per cell<br />

Relative γ−H2AX intensity<br />

24 Con<br />

22<br />

20<br />

18<br />

15 m<br />

4 hrs<br />

100%<br />

16<br />

100%<br />

14<br />

12<br />

10<br />

8<br />

6<br />

4<br />

57%<br />

2<br />

10%<br />

10%<br />

22%<br />

0<br />

Gamma<br />

Carbon<br />

1 Gy Dose<br />

7<br />

6<br />

5<br />

4<br />

3<br />

2<br />

Con<br />

15m<br />

4h<br />

1<br />

0<br />

Gamma<br />

Carbon<br />

1Gy Dose<br />

Relative Intensity pH2AX<br />

(C)<br />

Lane<br />

4.0<br />

3.5<br />

3.0<br />

2.5<br />

2.0<br />

1.5<br />

1.0<br />

0.5<br />

0.0<br />

pH2AX Carbon<br />

pH2AX Gamma<br />

Con 0.2 0.5 1 2 3 4 6<br />

Time (hours)<br />

Gamma<br />

Carbon<br />

C 10 30 1 2 3 4 6<br />

Fig. 3.3B Phosphorylation of H2AX (γ-H2AX) at different time points after exposure to 1<br />

Gy gamma or carbon irradiation in A 549 cells. (A) Graph represents average numbers of<br />

foci per cell, percentage of cells showing the foci is marked above the bars. (B) Graph<br />

represents relative phosphorylation of H2AX as determined by ImageJ software. At least<br />

100 cells per experiment were analyzed from three independent experiments. (C)<br />

Represenative image of immunoblot and histogram showing phosphorylation of H2AX at<br />

various time periods (0.2, 0.5, 1, 2, 3, 4 and 6 hours). Relative pH2Ax band intensity<br />

shown in histogram was divided by ponceau as loading control. Data represents means ±<br />

SD of three independent experiments.<br />

15

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