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Human gastric cancer organizes neighboring lymphatic vessels via recruitment of bone marrow-derived lymphatic endothelial progenitor cells

Authors
  • Tawada, Masahiro1
  • Hayashi, Shin-ichiro2, 3
  • Osada, Shinji1
  • Nakashima, Shigeru2
  • Yoshida, Kazuhiro1
  • 1 Gifu University Graduate School of Medicine, Departments of Surgical Oncology, 1-1 Yanagido, Gifu, 501-1194, Japan , Gifu (Japan)
  • 2 Gifu University Graduate School of Medicine, Department of Cell Signaling, 1-1 Yanagido, Gifu, 501-1194, Japan , Gifu (Japan)
  • 3 National Cerebral and Cardiovascular Center, Division of Hypertension and Nephrology, 5-7-1 Fujishiro-dai, Suita, Osaka, 565-8565, Japan , Suita (Japan)
Type
Published Article
Journal
Journal of Gastroenterology
Publisher
Springer Japan
Publication Date
Jul 25, 2012
Volume
47
Issue
9
Pages
1057–1060
Identifiers
DOI: 10.1007/s00535-012-0638-4
Source
Springer Nature
Keywords
License
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Abstract

BackgroundLymphatic metastasis is a critical determinant of prognosis in human gastrointestinal cancers. Studies suggest that lymphatic metastasis has been linked to lymphangiogenesis, the growth of lymphatic vessels, while the mechanisms of tumor lymphangiogenesis remain poorly characterized.MethodsHuman gastric cancer cells, MKN45, were implanted under the gastric submucosa of nude mice receiving green fluorescent protein-positive bone marrow (BM) transplants. In addition, MKN45 cells were subcutaneously injected into the back of each mouse as a model of human tumor xenografts. The tumor tissue was analyzed 3 weeks after implantation.ResultsThe mice with MKN45 cells represent recruitment and incorporation of BM-derived lymphatic endothelial progenitor cells (LEPC) into gastric lymphatics. Moreover, in a xenograft model, MKN45 cells induced lymphangiogenesis as well as recruitment of BM-derived LEPC in tumor lymphatics in a xenograft model.ConclusionsThese findings of this study suggest that human gastric adenocarcinoma induces tumor lymphangiogenesis via recruitment of LEPC from BM.

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