Virchows Archiv

, Volume 448, Issue 2, pp 127–134 | Cite as

Endoglin (CD105) expression in angiogenesis of colon cancer: analysis using tissue microarrays and comparison with other endothelial markers

  • Rahmawati Minhajat
  • Daisuke Mori
  • Fumio Yamasaki
  • Yasuo Sugita
  • Toshimi Satoh
  • Osamu Tokunaga
Original Article


Some markers of angiogenic endothelial cells are emerging as targets of cancer therapy. The present study compares the expression of CD105 with that of other endothelial markers in all tissue layers during the development of colon cancer. We immunohistochemically analyzed the expression of the colon adenoma–carcinoma sequence by endothelial cells using a panel of eight endothelial markers. We examined sections from endoscopic mucosal resection and surgical resection of tubular adenoma (n=31), carcinoma in adenoma (n=11), and adenocarcinoma (n=34). Cylindrical cores were punched out from donor paraffin blocks of normal mucosa adjacent to tumors, from tumor lesions of mucosa, submucosa, muscularis propria, subserosa, and serosa, and from lymph node metastases. CD31 (PECAM-1) was universally expressed in the blood vessels of adenoma–carcinoma lesions as well as in normal mucosal vessels (80–95%), with no significant differences. In contrast, cancer-associated blood vessels (up to 80%) and cancer cells themselves expressed high levels of CD105. In normal mucosa, CD105 was weakly expressed in endothelial cells of capillaries (≦21%), and significant differences in its expression in endothelial cells between the normal mucosa and adenoma, carcinoma in adenoma, and adenocarcinoma were found. Flt-1, Flk-1, transforming growth factor-β1, transforming growth factor-β receptor II, and CD44 were strongly expressed in the cancer cells but were not expressed in the blood vessels. Vascular endothelial growth factor was expressed at <30% in the blood vessels of adenoma, carcinoma in adenoma, and carcinoma. Moreover, this study provided evidence that CD105 was expressed exclusively in endothelial blood vessels by double immunostaining of CD105 and D2-40. The present study shows that de novo blood vessels of colon cancer specifically express CD105. These findings provide the basis for novel antiangiogenic cancer therapies.


Colon tumor CD105 Tissue microarray Angiogenesis Endothelial markers 


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Rahmawati Minhajat
    • 1
  • Daisuke Mori
    • 1
  • Fumio Yamasaki
    • 1
  • Yasuo Sugita
    • 1
  • Toshimi Satoh
    • 1
  • Osamu Tokunaga
    • 1
  1. 1.Department of Pathology and Biodefense, Faculty of MedicineSaga UniversitySagaJapan

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