Therefore, it is necessary to explore the problem of re-prolifera

Therefore, it is necessary to explore the problem of re-proliferated radioresistant cells to chemotherapeutic agents [2]. Multicellular spheroid (MTS) is a three-dimensional structure formed by cancer cells, which could be used for radio-biological study and bioassay on drug sensitivity in vitro. The results obtained from this assay are closely mimic in vivo setting [3, 4]. The microenvironment and cell cycle between A549 lung adenocarcinoma MTS and single layers are different [5]. Our

former article had shown that the cell cycle retardation during G2-M phase became increased with increase of the irradiation dose, and only a few cells survived, proliferated and relapsed after prolonged subculture. The growth of radioresistant PF-02341066 research buy descendant cells was slow with low sensitivity to radiation [6]. Whether the change of drug sensitivity to chemotherapeutic agent in re-proliferated radioresistant cells

may result in reduction and resistant, or sensitive, or the same as the primary cells CX-4945 is a problem worth to further investigate. In general, the mechanism of radioresistance and chemotherapy tolerance may have a common basis, and tumor cells at different cell cycle phase may have different degree of sensitivity to radiation and chemotherapeutic agents. For instance, cells in proliferate stage may be more sensitive. The survival of a few polyploidy giant cells in tumor after irradiation is perhaps due to p53 gene mutation resulting from DNA damage. The repairmen of tumor cells and tolerance to DNA damage form the basis of tolerance in the survived re-proliferated cells [7]. Radiation can also influence the apoptosis and some gene expression in regulating the cell cycle, e.g. C-Jun NH2-terminal kinase (JNK), protein kinase C (PKC), nerve ceramide

cascade protein [8], survivin (an inhibition substance of membranous structure in Progesterone the apoptosis protein ARS-1620 family) [9] and CD40 activating signal [10], etc. The elevation of the above factors is likely in some way to lead to the development of tolerance. In this study, MTS formed by A549 lung adenocarcinoma cells was used as the experimental model to assess chemosensitivity of radioresistant cells. A549 MTS was first treated with irradiation of 6 MV X-ray, then the susceptibility of radioresistant regrowth cells to chemotherapeutic agents and their multidrug resistance gene expression were analyzed thereafter. Methods Culture and irradiation of A549 MTS 6MV X-ray was used for single irradiation to A549 MTS, with irradiation dosage 15, 20, 25 and 30 Gy respectively and dosage rate 200 cGy/min. Then the MTS was cultured according to the conventional MTS culture methods [3, 6], and the culture liquid was changed weekly. Living re-proliferated cells were noted 40 days after irradiation of 25 Gy or 30 Gy [6], with the radioresistant cells being the 10th generation cell after 25 Gy irradiation.

The aim of the present study is to better characterize the cellul

The aim of the present study is to better characterize the cellular compartment, which is targeted by anti-JAM-C in vivo: lymphatic, mesenchymal or endothelial. We have generated a new monoclonal antibody against a mouse lymphatic cell line (JAM-Chigh), which does not recognize a brain endothelial cell line (JAM-Clow). This antibody is directed against thrombomodulin, initially described as a vascular specific protein. We show here that thrombomodulin is co-expressed with JAM-C on lymphatic sinuses and fibroblastic reticular cells of lymph nodes LDN-193189 research buy and on tumoral vessels, whereas it is not expressed on specialized vascular beds such as high endothelial venules. This suggests that the role of thrombomodulin

largely exceed its reported function of a vascular specific protein involved in coagulation and inflammation. We further demonstrate that anti-JAM-C treatment specifically decreases the lymph node fibroblastic reticular compartment

expressing PDGRFa and thrombomodulin. Similarly, thrombomodulin expression associated with tumoral vessels is reduced in anti-JAM-C treated mice, indicating that inhibition of tumor growth by anti-JAM-C treatment may rely on the killing of a stromal compartment present in tumor and lymph nodes. Whether this cellular compartment is mandatory for tumor growth and plays a role in tumor metastasis to lymph nodes is currently addressed. References: 1 M. Aurrand-Lions, L. PF477736 Duncan, C. Ballestrem see more et al., The Journal of biological chemistry 276 (4), 2733 (2001). 2 C. Lamagna, K. M. Hodivala-Dilke, B. A. Imhof et al., Cancer research 65 (13), 5703 (2005). 3 C. Zimmerli, B. P. Lee, G. Palmer et al., J Immunol 182 (8), 4728 (2009). O86 Identification of Glucocorticoid-Induced Leucine

Zipper as a Key Regulator of Tumor Cell Proliferation in Epithelial Ovarian Cancer Nassima Redjimi1, Françoise Gaudin1, Cyril Touboul1, Karl Balabanian1, Marc Pallardy3, Armelle Biola-Vidamment3, Hervé Fernandez2, Sophie Prevot2, Dominique Emilie1,2, Véronique Machelon 1 1 UMRS 764, Université Paris-Sud 11, Inserm, Clamart, France, 2 Service de Microbiologie-Immunologie Bioogique, Service d’Anatomie et Cytologie Pathologiques, Service de Gynécologie Obstétrique et de Médecine de la Reproduction, Assistance Publique-Hôpitaux de Paris, Hôpital Antoine Béclère, Ponatinib clinical trial Clamart, France, 3 UMR-S 749, Faculté de Pharmacie, Chatenay-Malabry, France Little is known about the molecules that contribute to tumor growth of epithelial ovarian cancer (EOC) that remains the most lethal gynecological neoplasm in women. Glucocorticoid-Induced Leucine Zipper (GILZ) is frequently detected in epithelial tissues and controls key signaling pathways. We investigated its expression by immunohistochemistry in tumor specimens from 50 patients surgically treated for diagnosis of epithelial ovarian cancer. GILZ was detected in the cytoplasm of tumor cells of all the well-defined histological types.

Data from elderly patients were evaluated in separate analyses (o

Data from elderly patients were Omipalisib clinical trial evaluated in separate analyses (of patients aged ≥65 and ≥70 years) from the analyses of 20- to <70-year-old patients (i.e. patients aged <70 years). Patients were administered the study drugs in an intravenous infusion see more on day 1 of each 21-day cycle, up to a maximum of six cycles. Pemetrexed (500 mg/m2) or docetaxel (75 mg/m2), and carboplatin (area under the curve: 5 mg/mL × min) were administered. Patients in the pemetrexed + carboplatin group were supplemented with at least five daily doses of oral folic acid (350–1,000 μg

once daily) within 7 days of the first dose of pemetrexed and were required to take daily folic acid supplements for 21 days following treatment; an intramuscular injection of vitamin B12 (1,000 μg) was given within 7 days of the first dose of pemetrexed and once every three cycles thereafter; and oral dexamethasone (4 mg twice daily) was required the day before, the day of, and the day after administration of pemetrexed [2]. Patients in the docetaxel + carboplatin group received supplementation with oral dexamethasone (8 mg twice daily) the day before, the day of, and the day after administration

of docetaxel. Time-to-event endpoints were analyzed using Cox proportional hazard models adjusted for Eastern find more Cooperative Oncology Group (ECOG) performance status (0 or 1 versus 2), disease stage (IIIB versus IV), ethnicity (East Asian versus others), gender (male versus female),

and smoking status (never versus ever). The between-arm tumor response and disease control rates were compared using multivariate logistic regression models adjusted for the same covariates. Toxicities were compared using Fisher’s exact text. 3 Results 3.1 Study Population The <70-, ≥65-, and ≥70-year age groups had 174, 68, and 37 patients, respectively, with median ages of 57.5, 70.3, and 73.1 years, respectively. Between-arm imbalances in the <70-, ≥65-, and ≥70-year age groups Chlormezanone favored the docetaxel + carboplatin arm among women (pemetrexed + carboplatin 39.3, 28.6, and 41.2 %, respectively, versus docetaxel + carboplatin 51.8, 51.5, and 55.0 %, respectively) and never smokers (pemetrexed + carboplatin 34.8, 14.3, and 17.6 %, respectively, versus docetaxel + carboplatin 38.8, 33.3, and 40.0 %, respectively) [Table 1]. Table 1 Baseline demographics of elderly subsets Variable Q-ITT population <70-year age group ≥65-year age group ≥70-year age group Pemetrexed + carboplatin, N = 106 Docetaxel + carboplatin, N = 105 Pemetrexed + carboplatin, N = 89 Docetaxel + carboplatin, N = 85 Pemetrexed + carboplatin, N = 35 Docetaxel + carboplatin, N = 33 Pemetrexed + carboplatin, N = 17 Docetaxel + carboplatin, N = 20 Gender [n (%)]  Male 64 (60.4) 50 (47.6) 54 (60.7) 41 (48.2) 25 (71.4) 16 (48.5) 10 (58.8) 9 (45.0)  Female 42 (39.6) 55 (52.4) 35 (39.3) 44 (51.

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This work

This work #LY3039478 randurls[1|1|,|CHEM1|]# was also funded by Conselho Nacional

de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). The authors would like to thank Dr. Guillermo Montandon Chaer (Embrapa Agrobiologia) for his knowledge on multivariate analyses and Dr. Vinícius de Melo Benites (Embrapa Solos) for his support with the logistics and the fieldwork. References 1. Silva JE, Resck DVS, Corazza EJ, Vivaldi L: Carbon storage in clayey oxisol cultivated pastures in the “Cerrado” region, Brazil. Agric Ecos Environ 2004, 103:357–363.CrossRef 2. Graham MH, Haynes RJ: Organic matter status and the size, activity buy Salubrinal and metabolic diversity of the soil microbial community in the row and inter-row of sugarcane under burning and trash retention. Soil Biol Biochem 2006, 38:21–31.CrossRef

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Pesq. Agropc. Bras. 2001, 36:1539–1545. 9. Lal R: Global potential of soil carbon sequestration to mitigate the greenhouse effect. Cr. Rev Plant Sci 2003, 22:151–184.CrossRef 10. Bustamante MMC, Medina E, Asner GP, Nardoto GB, Garcia-Montiel DC: Nitrogen cycling in tropical and temperate savannas. Biogeochemistry 2006, 79:209–237.CrossRef 11. Aboim MCR, Coutinho HLC, Peixoto RS, Barbosa JC, Rosado AS: Soil bacterial community structure and soil quality in a slash-and-burn cultivation system in southeastem Brazil. Appl Soil Ecol 2008, 38:100–108.CrossRef 12. Fearnside PM: Tropical deforestation and global warming. Science 2006, 312:1137–1137.PubMedCrossRef 13. Cerri CEP, Sparovek G, Bermoux M, Easterling WE, Melillo JM, Cerri CC: Tropical Agriculture and global warming impacts and mitigation option. Sci Agric 2007, 64:83–99.CrossRef 14. IPCC Intergovernmental Panel on Climate Change. Climate Change: Contribution of Working Group II to the 4th Assessment Report of the Intergovernmental Panel on Climate Change.

J Bacteriol 2005,187(17):6019–6030 PubMedCrossRef 13 Guillouard

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14. Sperandio B, Gautier C, Pons N, Ehrlich DS, Renault P, Guedon E: Three paralogous LysR-type transcriptional regulators control sulfur amino acid supply in Streptococcus mutans . J Bacteriol selleck chemical 2010,192(13):3464–3473.PubMedCrossRef 15. Sperandio B, Gautier C, McGovern S, Ehrlich DS, Renault P, Martin-Verstraete I, Guedon E: Control of methionine synthesis and uptake by MetR and homocysteine in Streptococcus mutans . J Bacteriol 2007,189(19):7032–7044.PubMedCrossRef 16. Even S, Burguière P, Auger S, Soutourina O, Danchin A, Martin-Verstraete I: Global control of cysteine metabolism by CymR in Bacillus subtilis . J Bacteriol 2006,188(6):2184–2197.PubMedCrossRef 17. Soutourina O, Poupel O, Coppée JY, Danchin A, Msadek T, Martin-Verstraete I: CymR, the master regulator of cysteine 3-deazaneplanocin A molecular weight metabolism in Staphylococcus aureus , controls host sulfur source utilization and plays a role in biofilm formation. Mol Microbiol 2009,73(2):194–211.PubMedCrossRef 18. Tanous C, Soutourina O, Raynal B, Hullo MF, Mervelet P, Gilles AM, Noirot P, Danchin A, England P, Martin-Verstraete I: The CymR Regulator in Complex with the Enzyme CysK Controls Cysteine Metabolism in Bacillus subtilis

. J Biol Chem 2008,283(51):35551–35560.PubMedCrossRef 19. Andre G, Even S, Putzer H, Burguiere

P, Croux C, Danchin A, Martin-Verstraete I, Soutourina O: S-box and T-box riboswitches and antisense RNA control a sulfur metabolic operon of Clostridium acetobutylicum . Nucleic Acids Res 2008,36(18):5955–5969.PubMedCrossRef 20. Rood JI: LY3023414 order Virulence genes of Clostridium perfringens . Annu Rev Microbiol 1998, 52:333–360.PubMedCrossRef 21. Shimizu T, Ohtani K, Hirakawa H, Ohshima K, Yamashita A, Shiba T, Ogasawara N, Hattori M, Kuhara S, Hayashi H: Complete genome sequence of Clostridium perfringens , an anaerobic flesh-eater. Proc Natl Acad Sci USA 2002,99(2):996–1001.PubMedCrossRef 22. BaThein W, Lyristis M, Ohtani K, Nisbet IT, Hayashi H, O-methylated flavonoid Rood JI, Shimizu T: The virR/virS locus regulates the transcription of genes encoding extracellular toxin production in Clostridium perfringens . J Bacteriol 1996,178(9):2514–2520. 23. Shimizu T, Shima K, Yoshino K, Yonezawa K, Hayashi H: Proteome and transcriptome analysis of the virulence genes regulated by the VirR/VirS system in Clostridium perfringens . J Bacteriol 2002,184(10):2587–2594.PubMedCrossRef 24. Cheung JK, Rood JI: The VirR response regulator from Clostridium perfringens binds independently to two imperfect direct repeats located upstream of the pfoA promoter. J Bacteriol 2000,182(10):2992–2992.CrossRef 25. Okumura K, Ohtani K, Hayashi H, Shimizu T: Characterization of genes regulated directly by the VirR/VirS system in Clostridium perfringens .

A lack of other alternatives may, however, explain this reliance

A lack of other alternatives may, however, explain this reliance on diversification. As land becomes infertile and fragmented, the expansion of agriculture has become unfeasible in the LVB. Similarly, migration is no Selleckchem Ku 0059436 longer as attractive to farmers as it used to be because the competition for unskilled work has increased between ruralites and the urban poor (field data, 2008–2010) as also noted by other scholars in similar sub-Saharan settings (Bryceson 2002; Cleaver 2005; Ellis and Freeman 2005). Intensification is still a possibility, but in the short term it demands an increase in the supply of labor and in the long term greater agricultural expertise

to make management sustainable (Pretty et al. 2011), Fedratinib both of which are currently in short supply in the communities we have studied (Andersson 2012). Hence. agricultural diversification is likely to continue to play a key role in the future management of chronic livelihood stress. But whether or not it is a sustainable adaptation strategy and viable for everyone,

is still uncertain, MAPK Inhibitor Library nmr given the current reliance on similar strategies and the differential adaptive capacities to implement those adaptations. Moreover, there may be limits to how much one can diversify due to the (often) increased labor burden, limited market integration and lack of transport infrastructure (Eriksen et al. 2005; Miles 2007). Three lessons with significance for our understanding of climate vulnerability can be drawn from this analysis. Firstly,

smallholder livelihoods are becoming increasingly separated from their natural surroundings, because the C1GALT1 majority of natural resources needed for basic livelihood survival are either no longer available or no longer accessible to them, other than in the cash-based market economy. This means that small-holding farmers today have mainly become consumers in, rather than producers for, the local market. This is illustrated by the following quotation from one of the farmers interviewed: Life is harder now, everything needs money. In the past people were exchanging food with each other, food was available at all times (Paul, 14 November 2008, Tanzania). Consequently, due to recurring, yet variable, shortages of home grown food in all four communities throughout the year (see Table 2), farmers are not only dependent on purchasing food but also need to buy fuel wood, seeds and water at times as well as renting grazing land in order to survive—resources that in the past were produced and/or collected directly from natural surroundings. This monetarization requires families to ensure a steady flow of cash into the household. Particularly important is securing money to buy staple foods, since that consumes the biggest share of budgets in the households studied (field data, 2008, 2009).

Br 008/009 isolates (Table insert in Figure 1 and

Br.008/009 isolates (Table insert in Figure 1 and selleck kinase inhibitor [5]). This province also had 44 of 188 worldwide isolates of the A.Br.Aust94 isolates. This is a sub-group that is also well represented in neighboring Turkey and India. A smaller subset of the A.Br.Vollum sub-lineage (also found in Europe and Africa) accounts for 16 Xinjiang samples out of a worldwide set that totals 48 isolates (Table insert in

Figure 1). The remainder of China is dominated by the A.Br.001/002 subgroup. Chinese isolates represent 74 of the 106 isolates from our worldwide collection of A.Br.001/002 sub-group isolates (Figure 1 and [5]). Only 9 of these isolates are from Xinjiang province to the west. Similarly there are 8 isolates out of 19 worldwide isolates in the A.Br.Ames sub-lineage in the main parts of China. MLVA Analysis of A.Br.008/009, A.Br.Aust94 and A.Br.Vollum CanSNP typing of these isolates has already indicated that there were

49 total Chinese isolates from the A.Br.008/009 subgroup, 44 from the A.Br.Aust94 sub-lineage and 15 from the A.Br.Vollum (Figure 1). Additional sub-typing using 15 MLVA markers indicates that there were only 3 MLVA genotypes within both the A.Br.Vollum (Nei Diversity Index = 0.038 [8]) and A.Br.Aust94 (Nei’s Diversity Index = 0.031) sub-lineages but 14 MLVA genotypes within A.Br.008/009 (Nei’s Diversity Index = 0.143, Figures 1, 3a, 3b, and 3c). These results suggest repeated infections and outbreaks for each of these sub-groups of B. anthracis. The identification of 14 genotypes for the A.Br.008/009 sub-groups is an indication of a combination of possibly repeated introductions Selleck MEK162 and infections and a significantly longer history for this particular clade in this region. Figure 3 MLVA15 Analysis of Chinese isolates belonging to the A.Br.Vollum, A.BrAust94 and A.Br.008/009 canSNP sub-lineges/sub-groups. Representatives of these three sub-groups were only found in isolates recovered in Xinjiang Province,

or in unknown locations within China (n = 2). All of these isolates were recovered from soil samples in this province. GF120918 Branch collapse and Methocarbamol ongoing SNP analysis One of the more remarkable findings from the whole genome SNP analysis of 5 diverse isolates by Pearson et al. [3] was a nearly total lack of homoplastic SNP markers in a query of the status of nearly 1,000 SNP positions in 26 diverse isolates. This finding uncovered a phenomenon called “”branch collapse”" that resulted in a tree that had no branching except for those created by 7 sequenced reference genomes. The remaining 26 isolates were then either part of one of these seven “”sub-lineages”" or part of 5 non-branching nodes (“”sub-groups”") on one of the 7 branches. While the canSNP tree is highly accurate in the typing of 1033 isolates, it lacks resolution because it reflects the results of only 13 of nearly 1,000 SNPs.

The OCR of N9 cells

The OCR of N9 cells pre-treated with LPS (Figure 7B) was more significant than that in N9 cells (Figure 7A). Followed find protocol with the increased concentrations of SWNHs, the OCR of N9 cells decreased significantly

in a Inhibitor Library in vitro dose-dependent manner, especially in pre-treated with LPS (Figure 7B) (P < 0.01). Figure 7 The mitochondrial functions of N9 cells affected by SWNHs, especially in pre-treated with LPS. Intact cellular basal OCR of N9 cells pre-treated with or without LPS induced by SWNHs measured by Seahorse XF24 analyzer. The OCR of N9 cells pre-treated with LPS (B) was more significant than N9 cells (A). Followed with the increasing concentrations of SWNHs, the MK 8931 solubility dmso OCR of N9 cells decreased significantly in a dose-dependent manner, especially in pre-treated with LPS (B) (P < 0.01). Steady state cellular ATP levels of N9 cells pre-treated with or without LPS induced by SWNHs were measured too. The steady state cellular alkaline phosphatase (APT) level of N9 cells pre-treated with LPS (D) was more significant than N9 cells (C). Followed with the increasing concentrations of SWNHs, the steady state cellular ATP level of N9 cells

decreased significantly in a dose-dependent manner, especially in pre-treated with LPS (D) (P < 0.01). All data are represented as mean ± SEM. Steady state cellular ATP levels of N9 cells pre-treated with or without LPS induced by SWNHs were measured too. The steady state cellular APT level of N9 cells pre-treated with LPS (Figure 7D) was more significant than that in N9 cells (Figure 7C). Followed with the increased concentrations of SWNHs, the steady state cellular ATP level of N9 cells was decreased significantly in a dose-dependent manner, especially in pre-treated with LPS (Figure 7D) (P < 0.01). The NAD levels of N9 cells affected L-gulonolactone oxidase by SWNHs, especially in pre-treated with LPS NAD levels were measured

in N9 cells pre-treated with or without LPS induced by SWNHs. NAD level of N9 cells pre-treated with LPS (Figure 8B) were more significant than in N9 cells (Figure 8A). Followed with the increased concentrations of SWNHs, the NAD level of N9 cells pre-treated with (Figure 8B) or without LPS (Figure 8A) was decreased significantly in a dose-dependent manner, especially in pre-treated with LPS (Figure 8D) (P < 0.01). Figure 8 NAD levels of N9 cells affected by SWNHs, especially in pre-treated with LPS. NAD levels were measured in N9 cells pre-treated with or without LPS induced by SWNHs. NAD level of N9 cells pre-treated with LPS (B) were more significant than in N9 cells (A). Followed with the increasing concentrations of SWNHs, NAD level of N9 cells decreased significantly in a dose-dependent manner, especially in pre-treated with LPS (B) (P < 0.01). All data are represented as mean ± SEM.

Thus, it is necessary to investigate different tumour types and s

Thus, it is necessary to investigate different tumour types and stages in order to determine the role of amphiregulin for Cisplatin resistance. Further studies will determine

the impact of amphiregulin expression for therapy response and outcome in women with breast cancer. Figure 2 Schematic model of Amphiregulin signalling. Amphiregulin induced signaling of the EGFR/ERBB2 receptor tyrosine kinases in Cisplatin resistant MCF-7 cells. Ovarian cancer Clinicians have designated ovarian cancer a “”silent killer”" because, when diagnosed, the disease usually has already spread into the peritoneum [65]. If the cancer is diagnosed while confined to the ovary (localized stage), the 5-year survival rate is see more over 90%. In contrast, if ovarian cancer is diagnosed after it has metastasized (distant stage), the 5-year survival rate is below 30%. Unfortunately, most cases (68%) are diagnosed at the distant stage. Thus, ovarian cancer has a substantially shorter and more MRT67307 molecular weight dramatic etiopathology than breast cancer: ovarian cancer is the most lethal gynecological cancer in the industrialized nations although its first occurrence has a satisfactory clinical response to platinum-based chemotherapy [10]. The reason is that more than 80% of the patients experience an early relapse [66]. The tumour usually reappears in advanced stage or as metastatic

form of the disease (FIGO III/IV), which is treated in first line with cytoreductive surgery followed by chemotherapy doublets consisting of a Platinum-based compound combined with a Taxane. SB-715992 price Resistance to Platinum-containing compounds is a major Fludarabine datasheet obstacle in ovarian cancer therapy and the underlying mechanisms are not completely understood. Formation of a Cisplatin resistant phenotype after initial drug response usually is entailed with a lethal

course of the disease after a relapse [67]. Cellular defense to Cisplatin evolves as concerted action of growth factors, RTKs, MAPKs and other signal transduction pathways. The emergence of ovarian cancer proceeds with clinically diffuse symptoms [68]. Unfortunately, ovarian cancer is not contemporarily diagnosed because early symptoms like abdominal pain are not regarded as signs of a deadly disease by the patient. When symptoms aggravate, the patient often is already moribund. Ovarian cancer incidence peaks in the sixth and seventh life decade [67]. Approximately 5% of ovarian cancer cases have a hereditary background: women bear an increased risk of ovarian cancer if a first-degree relative suffers from (or died of) ovarian or breast cancer [69]. Therapeutic intervention of ovarian carcinomas can have different intentions, first, a curative approach intending the complete removal of the tumour and significant extension of survival time. To achieve this objective, severe side effects are accepted.