LIFE01200604005 Shri Somnath Ghosh - Homi Bhabha National ...

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CHAPTER 3 RESULTS Fig.3.2.4 Gene expression of Bax and Bcl-2 12h after irradiation in A 549 cells irradiated with 2Gy Proton Beam or 2Gy γ-radiation. Total RNA from A 549 cells was isolated and reverse transcribed. RT-PCR analysis of Bax and Bcl-2 genes was carried out as described in materials and methods. PCR products were resolved on 1.5% agarose gels containing ethidium bromide. β- Actin gene expression in each group was used as an internal control. Ratio of intensities of Bax and Bcl-2 band to that of respective β-actin band as quantified from gel pictures are shown above each gel picture. Con means unirradiated control, H means proton. Data represents means ± SE of three independent experiments; significantly different from unirradiated controls: *P < 0.05, **P < 0.01. 143
CHAPTER 3 RESULTS 3.3 High LET irradiation induced signaling in mammalian cells and its comparison with Gamma irradiation. Having established the signaling differences between proton beam and gamma ray in lung carcinoma A549 cells, the variance in signaling pattern with higher LET (Carbon and Oxygen) was studied. Although enough gross evidence exists of the activation of signaling pathways after irradiation, the differences between gamma and High LET have not been studied in detail. The two seem to activate the same pathways but must diverge at some point so that the end point can be different. Many studies on signaling pathways after low and high LET radiations have found the activation to be similar except in the intensity [214] but since the end result is different, there must be a divergence of pathways at some stage. It is this stage of signaling, that is different, that will be crucial to designing therapies that target specific molecules or pathways. The aim of the present study was to look for these subtle differences that are of immense consequences. 3.3.1 Carbon beam induced signaling in mammalian cells and its comparison with Gamma irradiation. Carbon beams are high linear energy transfer (LET) radiation characterized by higher relative biological effectiveness than low LET radiation. The aim of the current study was to determine the signaling differences between γ and carbon ion-irradiation. A549 cells were irradiated with 1Gy carbon or γ-radiation and the activation of DNA damage response signaling was studied. 3.3.1.1 Carbon ions were three times more cytotoxic than gamma To determine the sensitivity of cells to similar dose of high and low LET radiation, their ability to form colonies after irradiation was observed. Irradiation of exponentially growing A549 cells 144
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RADIATION INDUCED SIGNALING IN MAMM
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DECLARATION I, hereby declare that
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CONTENTS Page No. SYNOPSIS………
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2.11 Measurement of NO production
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PREAMBLE SYNOPSIS Ionising radiatio
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SYNOPSIS Aims and Objectives: To St
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SYNOPSIS 2.6 Immunofluorescence sta
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SYNOPSIS ATM gene expression, which
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SYNOPSIS Percentage Survival 100 80
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SYNOPSIS Ratio of Rad52 to Actin Ra
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Relative Phosphorylation 45 40 35 3
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SYNOPSIS Fig. 3.3A Clonogenic Cell
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SYNOPSIS (A) Av No. of phospho BRCA
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SYNOPSIS Percentage Survival 120 10
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SYNOPSIS Fig.3.4B. Existance of cro
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SYNOPSIS Fig. 3.4EDNA damage in EL-
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SYNOPSIS subsequent cytotoxicity ca
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SYNOPSIS [4] Hall, E. J. Radiobiolo
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CHAPTER 1 INTRODUCTION INTRODUCTION
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CHAPTER 1 INTRODUCTION 15.8% 9.56%
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CHAPTER 1 INTRODUCTION far apart an
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CHAPTER 1 INTRODUCTION and are more
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CHAPTER 1 INTRODUCTION 1.3 DNA dama
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CHAPTER 1 INTRODUCTION associates w
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CHAPTER 1 INTRODUCTION are unable t
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CHAPTER 1 INTRODUCTION Perhaps one
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CHAPTER 1 INTRODUCTION occurs at DS
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CHAPTER 1 INTRODUCTION related prot
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CHAPTER 1 INTRODUCTION damage must
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CHAPTER 1 INTRODUCTION At the prese
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CHAPTER 1 INTRODUCTION predominant
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CHAPTER 1 INTRODUCTION provide a me
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CHAPTER 1 INTRODUCTION hypersensiti
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CHAPTER 1 INTRODUCTION cycle-specif
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CHAPTER 1 INTRODUCTION 1.4 Overview
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CHAPTER 1 INTRODUCTION 1.4.1 Radiat
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CHAPTER 1 INTRODUCTION interaction
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CHAPTER 1 INTRODUCTION p90S6 kinase
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CHAPTER 1 INTRODUCTION CD4 (formerl
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CHAPTER 1 INTRODUCTION unrepaired d
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CHAPTER 1 INTRODUCTION well to the
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CHAPTER 1 INTRODUCTION 1.6 Radiatio
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CHAPTER 1 INTRODUCTION becomes pote
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CHAPTER 2 MATERIALS AND METHODS MAT
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CHAPTER 2 MATERIALS AND METHODS 2.2
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CHAPTER 2 MATERIALS AND METHODS res
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CHAPTER 2 MATERIALS AND METHODS Arr
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CHAPTER 2 MATERIALS AND METHODS PBS
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CHAPTER 2 MATERIALS AND METHODS the
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CHAPTER 2 MATERIALS AND METHODS 2.1
Page 102 and 103: CHAPTER 3 RESULTS RESULTS 93
Page 104 and 105: CHAPTER 3 RESULTS fractionated regi
Page 106 and 107: CHAPTER 3 RESULTS On comparison of
Page 108 and 109: CHAPTER 3 RESULTS Table 3.1.2A List
Page 110 and 111: CHAPTER 3 RESULTS 80 NM_002185 IL7R
Page 112 and 113: CHAPTER 3 RESULTS SAA2 149 AU134977
Page 114 and 115: CHAPTER 3 RESULTS 221 LOC643167 RNA
Page 116 and 117: CHAPTER 3 RESULTS 299 BF244402 FBXO
Page 118 and 119: CHAPTER 3 RESULTS CDK4) 57 AU152107
Page 120 and 121: CHAPTER 3 RESULTS 134 AL045793 METT
Page 122 and 123: CHAPTER 3 RESULTS 58 AF237813 ABAT
Page 124 and 125: CHAPTER 3 RESULTS 127 AI809749 ORMD
Page 126 and 127: CHAPTER 3 RESULTS 31 BE615699 UNC84
Page 128 and 129: CHAPTER 3 RESULTS 47 AF026303 SULT1
Page 130 and 131: CHAPTER 3 RESULTS 117 BF062193 CYor
Page 132 and 133: CHAPTER 3 RESULTS 187 AL036662 ---
Page 134 and 135: CHAPTER 3 RESULTS 52 AV686514 EMP2
Page 136 and 137: CHAPTER 3 RESULTS exposed to 10 Gy
Page 138 and 139: CHAPTER 3 RESULTS Fig.3.1.4 Gene ex
Page 140 and 141: CHAPTER 3 RESULTS Fig. 3.1.6 Radiat
Page 142 and 143: CHAPTER 3 RESULTS Fig. 3.1.7 Transl
Page 144 and 145: CHAPTER 3 RESULTS 3.1.9 Stabilizati
Page 146 and 147: CHAPTER 3 RESULTS 23±1.5% (Fig. 3.
Page 148 and 149: CHAPTER 3 RESULTS whereas only the
Page 150 and 151: CHAPTER 3 RESULTS Fig.3.2.2 Gene ex
Page 154 and 155: CHAPTER 3 RESULTS with equal doses
Page 156 and 157: CHAPTER 3 RESULTS Fig.3.3.1.2 Forma
Page 158 and 159: CHAPTER 3 RESULTS Fig.3.3.1.3 Phosp
Page 160 and 161: CHAPTER 3 RESULTS (7.5±0.64) (Fig.
Page 164 and 165: CHAPTER 3 RESULTS Fig.3.3.1.7b Phos
Page 166 and 167: CHAPTER 3 RESULTS 3.3.2 Oxygen beam
Page 168 and 169: CHAPTER 3 RESULTS in all the cells.
Page 170 and 171: CHAPTER 3 RESULTS 3.3.2.3 Radiation
Page 176 and 177: CHAPTER 3 RESULTS Fig.3.3.2.7 Apopt
Page 178 and 179: CHAPTER 3 RESULTS PMA stimulated U9
Page 180 and 181: CHAPTER 3 RESULTS Fig.3.4.2. Exista
Page 182 and 183: CHAPTER 3 RESULTS up-regulation of
Page 184 and 185: CHAPTER 3 RESULTS Fig.3.4.3.2 NO pr
Page 186 and 187: CHAPTER 3 RESULTS 3.4.3.4 Apoptotic
Page 188 and 189: CHAPTER 3 RESULTS 3.4.4 Bystander e
Page 190 and 191: CHAPTER 3 RESULTS Fig.3.4.4b DNA da
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CHAPTER 4 DISCUSSION 4.2 Proton bea
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CHAPTER 4 DISCUSSION Although the e
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CHAPTER 4 DISCUSSION Similar number
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CHAPTER 4 DISCUSSION the mechanism
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CHAPTER 4 DISCUSSION Thus unlike th
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CHAPTER 4 DISCUSSION different from
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CHAPTER 4 DISCUSSION upregulates ma
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CHAPTER 4 DISCUSSION Numerous studi
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CHAPTER 4 DISCUSSION inhibition of
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CHAPTER 4 DISCUSSION The survival o
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CHAPTER 5 REFERENCES [1] Khan, F. T
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CHAPTER 5 REFERENCES [19] Woo, R. A
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CHAPTER 5 REFERENCES [35] Nghiem, P
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CHAPTER 5 REFERENCES [52] McKay, B.
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CHAPTER 5 REFERENCES [69] Cary, R.
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CHAPTER 5 REFERENCES [84] Uziel, T.
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CHAPTER 5 REFERENCES [98] Liu, Y.;
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CHAPTER 5 REFERENCES [111] Fei, P.;
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CHAPTER 5 REFERENCES [127] Frank, K
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CHAPTER 5 REFERENCES [141] Pierce,
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CHAPTER 5 REFERENCES [156] Roots, R
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CHAPTER 5 REFERENCES [171] Xia, Z.;
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CHAPTER 5 REFERENCES (MAP) kinase c
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CHAPTER 5 REFERENCES phosphorylatio
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CHAPTER 5 REFERENCES [211] Anderson
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CHAPTER 5 REFERENCES [229] Konca, K
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CHAPTER 5 REFERENCES [245] Kastan,
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CHAPTER 5 REFERENCES [261] Miralbel
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CHAPTER 5 REFERENCES [278] Weizman,
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CHAPTER 5 REFERENCES [294] Zhou, H.
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PUBLICATIONS AND PRESENTATIONS Publ
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Mutation Research 729 (2012) 61-72
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S. Ghosh, M. Krishna / Mutation Res
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Cancer Invest Downloaded from infor
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1568 I. J. Radiation Oncology d Bio
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