2013 Fiscal Year Final Research Report
Search of inhibitors effective in suppressing the altered invasiveness of irradiated cancer cell lines
| Project/Area Number |
23791467
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Radiation science
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| Research Institution | National Institute of Radiological Sciences |
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Principal Investigator |
FUJITA Mayumi 独立行政法人放射線医学総合研究所, 重粒子医科学センター, 研究員 (80580331)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 粒子線治療 |
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| Research Abstract |
In this study, we used 30 tumor cell lines and 1 normal embryonic lung fibroblast, and found that carbon-ion (C-ion) irradiation is effective in suppressing invasiveness of many cell lines. However, C-ion irradiation also enhanced the invasiveness of 2 cell lines, PANC-1 and SF126. Among 285 Anticancer Drugs , we found that nitric oxide synthase (NOS) inhibitors and phosphatidylinositol 3-kinases (PI3K) inhibitors were both effective in suppressing irradiated-PANC-1 invasion. Interestingly, most invading PANC-1 cells were nitric oxide (NO)-producing cells, and C-ion irradiation increased the NO-producing cell population, thereby enhancing invasion. Furthermore, NO2- content was increased in irradiated PANC-1 or SF126, whereas those were decreased in irradiated MIAPaCa-2, whose invasiveness was suppressed by C-ion irradiation, suggested the roles of NO in the regulation of irradiation-altered invasiveness.
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Research Products
(14 results)
