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LIFE01200604005 Shri Somnath Ghosh - Homi Bhabha National ...

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SYNOPSIS<br />

Relative phosphorylation<br />

1.5<br />

1.0<br />

0.5<br />

0.0<br />

(A)<br />

pERK(gamma)<br />

pERK(carbon)<br />

Con 0.1 0.5 1 2 3 4 6<br />

Time after irradiation (hrs)<br />

Relative phosphorylation<br />

(B)<br />

1.5<br />

1.0<br />

0.5<br />

0.0<br />

pJNK(gamma)<br />

pJNK(carbon)<br />

Con 0.1 0.5 1 2 3 4 6<br />

Time after irradiation (Hrs)<br />

Carbon<br />

Gamma<br />

Con 10 30 1 2 3 4 6 Lane Con 10 30 1 2 3 4 6<br />

pERK<br />

pJNK<br />

Fig.3.3G Phosphorylation of ERK (pERK) and JNK (pJNK) in A549 cells cells at<br />

different time periods (hours) after exposure to 1 Gy dose of gamma or carbon ion<br />

irradiation. Treated and untreated cells were immunoblotted and detected using antiphospho<br />

ERK (panel A) or anti phospho JNK (panel B). One representative image of<br />

three independent experiments is shown here.<br />

Bar graph represents the relative pERK (panel A) and pJNK (panel B) band intensities<br />

plotted against time. The intensities of pERK/pJNK were obtained after dividing them<br />

with the respective loading control intensities and have been normalized for comparison.<br />

(A)<br />

30<br />

Control 1Gy Gamma 1Gy Carbon<br />

(B)<br />

% Apoptotic Nuclei at 4h<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

Con<br />

Gamma<br />

Carbon<br />

1 Gy<br />

Con 2h 3h 4h 6h<br />

(C)<br />

Bax<br />

Lane<br />

Fig.3.3H Apoptosis in carbon irradiated A549 cells. Panel A, Apoptotic nuclei of A549 cells were<br />

visualized and quantified by using DAPI staining, 4 hours after carbon or gamma irradiation<br />

(1Gy). Panel B, The percentage of cells with apoptotic nuclei are represented as graph. At least<br />

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

Representative immunoblot image depicting upregulation of Bax, observed at various time<br />

periods (2, 3, 4 and 6 hours) after carbon irradiation (1 Gy).<br />

18

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