2012 Fiscal Year Final Research Report
Studies on Helicobacter species on gastric MALT lymphoma and effect of molecular target drugs
| Project/Area Number |
22590690
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Gastroenterology
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| Research Institution | Kitasato University |
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Principal Investigator |
NAKAMURA Masahiko 北里大学, 薬学部臨床薬学研究・教育センター病態解析学, 准教授 (30155858)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUI Hidenori 北里大学, 感染制御科学府, 講師 (30219373)
TAKAHASHI Tetsufumi 北里大学, 薬学部, 助教 (40449004)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 上部消化管学(食道、胃、十二指腸) |
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| Research Abstract |
By the investigation of the specimens obtained from the upper gastrointestinal endoscopy of the patients suffering from chronic gastritis, gastric ulcer, gastric polyp, gastric cancer and gastric MALT lymphoma, 7 MALT lymphoma cases out of 18 (38%) were found to be positive to Helicobacter heilmannii, while only 2% were positive in other gastric diseases. By the cluster analysis using GENENTYC-MAC UPGMA, these cases were found to be infected by Helicobacter heilmannii and suis. Among other gastric diseases, nodular gastritis patents were found to be highly positive to H. heilmannii, suggesting the possible interaction with the gastric cancer. In H. heilmannii positive cases, more than half cases were found to show the positivity to H. pylori as well.By the in vivo study using the infection model using C57BL/6 mice, VEGF-related immunoreactities were recognized in the MALT lymphoma, suggesting the VEGF-mediated angiogenesis was closely related to the expansion of the tumor. The administration of Flt-4 and Flt-1 antibody suppressed the tumor, supporting this hypothesis. c-Met immunoreactivity was found in the lymphocytes composing the MALT lymphoma, and HGF immunoreactivity was recognized mostly in the endothelial cells and macrophages. HGFA was localized on mesenchymal cells other than the lymphocytes. The administration of antibodies against c-Met to the infected mice induced the significant suppression of hepatic and pulmonary lesions as well as the gastric MALT lymphoma.In conclusion, HGF and c-Met pathway were suggested to contribute to the lymphomagenesis in the liver and lung after Helicobacter heilmannii infection.
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[Journal Article] Suppression of lymphangiogenesis induced by Flt-4 antibody in gastric low-grade mucosa-associated lymphoid tissue lymphoma by Helicobacter heilmannii infection2010
Author(s)
Nakamura, M., Matsui, H., Takahashi, T., Ogawa, S., Tamura, R., Murayama, S.Y., Takahashi, T. and Tsuchimoto, K
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Journal Title
J. Gastroenterol. Hepatol
Volume: 25巻
Pages: S1-S6
Peer Reviewed
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[Journal Article] Helicobacter heilmannii can induce gastric lymphoid follicles in mice via a Peyer's patch-independent pathway2010
Author(s)
Nobutani, K., Yoshida, M., Nishiumi, S., Nishitani, Y., Takagawa, T,, Tanaka, H., Yamamoto, K., Miura, T., Bensuleiman, Y., Ota, H., Takahashi, S., Matsui, H., Nakamura, M.and Azuma, T
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Journal Title
FEMS Immunol Med Microbiol
Volume: 60巻
Pages: 156-164
Peer Reviewed
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[Presentation] MALT Lymphoma Stem Cell in Helicobacter heilmannii-infected Mice Stomach: Effect of Eradication2012
Author(s)
Nakamura, M., Matsui, H., Takahashi, T., Takahashi, S., Hibi, T. and Tsuchimoto, K
Organizer
7th International Symposium on Cell/Tissue Injury and Cytoprotection/Organoprotection -Focus on GT Tract
Place of Presentation
Hawaii, USA
Year and Date
20120909-11
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[Presentation] c-MET, HGF and HGFA are closely related to the Liver and Lung Lesion in Helicobacter heilmannii-induced MALT lymphoma2012
Author(s)
Nakamura, M., Matsui, H., Takahashi, T.,Murayama, S.Y., Takahashi, S., Hibi, T. and Tsuchimoto, K
Organizer
DDW 2012
Place of Presentation
San Diego, USA
Year and Date
20120519-22
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