Heparanase promotes angiogenesis through Cox-2 and HIF1α

Yoshio Naomoto, Mehmet Gunduz, Munenori Takaoka, Takaomi Okawa, Esra Gunduz, Tetsuji Nobuhisa, Masahiko Kobayashi, Yasuhiro Shirakawa, Tomoki Yamatsuji, Ryutaro Sonoda, Junji Matsuoka, Noriaki Tanaka

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Heparanase has been given attention for its role in the invasion and metastasis of various cancers for years. We have also investigated and reported the role of heparanase in several human cancers, including gastric, esophageal and colon carcinomas. Other than the critical role of heparanase in tumor invasion and metastasis, it is also believed that heparanase is involved in angiogenesis, another feature of tumor progression which is complicatedly mediated by many molecules, including cyclooxygenese-2 (Cox-2). Thus, our recent study elucidated a possible relationship of heparanase with Cox-2 upon tumor angiogenesis. Based upon our study, three major transcription factor binding sites containing NF-κB, NF-IL-6 and CRE sites seemed to have a compensative and cooperative role in heparanase-induced Cox-2 upregulation. On the other hand, tumor hypoxia often occurs in most tumors and Cox-2-induced HIF1α overexpression has recently been shown in various cancers. Here we believe that heparanase may also be involved in tumor hypoxia through the induction of HIFα either directly or indirectly through the Cox-2 pathway. This hypothesis indicates a possible novel function of heparanase and its link to HIF1α and Cox-2, and therefore this function would give us a clue about potential new strategies for cancer therapy.

Original languageEnglish
Pages (from-to)162-165
Number of pages4
JournalMedical Hypotheses
Volume68
Issue number1
DOIs
Publication statusPublished - 2006

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Neoplasms
Neoplasm Metastasis
heparanase
Colonic Neoplasms
Stomach Neoplasms
Interleukin-6
Transcription Factors
Up-Regulation
Binding Sites
Carcinoma
Tumor Hypoxia
Therapeutics

ASJC Scopus subject areas

  • Developmental Biology
  • Medicine(all)
  • Drug Discovery

Cite this

Naomoto, Y., Gunduz, M., Takaoka, M., Okawa, T., Gunduz, E., Nobuhisa, T., ... Tanaka, N. (2006). Heparanase promotes angiogenesis through Cox-2 and HIF1α. Medical Hypotheses, 68(1), 162-165. https://doi.org/10.1016/j.mehy.2006.03.055

Heparanase promotes angiogenesis through Cox-2 and HIF1α. / Naomoto, Yoshio; Gunduz, Mehmet; Takaoka, Munenori; Okawa, Takaomi; Gunduz, Esra; Nobuhisa, Tetsuji; Kobayashi, Masahiko; Shirakawa, Yasuhiro; Yamatsuji, Tomoki; Sonoda, Ryutaro; Matsuoka, Junji; Tanaka, Noriaki.

In: Medical Hypotheses, Vol. 68, No. 1, 2006, p. 162-165.

Research output: Contribution to journalArticle

Naomoto, Y, Gunduz, M, Takaoka, M, Okawa, T, Gunduz, E, Nobuhisa, T, Kobayashi, M, Shirakawa, Y, Yamatsuji, T, Sonoda, R, Matsuoka, J & Tanaka, N 2006, 'Heparanase promotes angiogenesis through Cox-2 and HIF1α', Medical Hypotheses, vol. 68, no. 1, pp. 162-165. https://doi.org/10.1016/j.mehy.2006.03.055
Naomoto Y, Gunduz M, Takaoka M, Okawa T, Gunduz E, Nobuhisa T et al. Heparanase promotes angiogenesis through Cox-2 and HIF1α. Medical Hypotheses. 2006;68(1):162-165. https://doi.org/10.1016/j.mehy.2006.03.055
Naomoto, Yoshio ; Gunduz, Mehmet ; Takaoka, Munenori ; Okawa, Takaomi ; Gunduz, Esra ; Nobuhisa, Tetsuji ; Kobayashi, Masahiko ; Shirakawa, Yasuhiro ; Yamatsuji, Tomoki ; Sonoda, Ryutaro ; Matsuoka, Junji ; Tanaka, Noriaki. / Heparanase promotes angiogenesis through Cox-2 and HIF1α. In: Medical Hypotheses. 2006 ; Vol. 68, No. 1. pp. 162-165.
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