Cepharanthine inhibits angiogenesis and tumorigenicity of human oral squamous cell carcinoma cells by suppressing expression of vascular endothelial growth factor and interleukin-8.
Cepharanthine is a biscoclaurine alkaloid extracted from Stephania cepharantha Hayata, which is widely used for the treatment of many acute and chronic diseases, and can exert antitumor effects on several human cancer cell lines. However, little is known about the detailed mechanisms of the antitumor activity of Cepharanthine. In the present study, we determined whether Cepharanthine could suppress angiogenesis and growth of human oral squamous cell carcinoma (OSCC) cells in vitro and in vivo. Cepharanthine significantly inhibited expression of two major pro-angiogenic molecules, vascular endothelial growth factor (VEGF) and interleukin-8 (IL-8), in cultured cells and in cells implanted into the subcutaneous tissue of nude mice. Also, Cepharanthine inhibited the nuclear factor-kappaB (NF-kappaB) activity in human OSCC cells in vitro and in vivo. The decreased expression of VEGF and IL-8 correlated with decreased tumor cell growth and decreased vascularization in vitro and in vivo. These findings suggest that Cepharanthine can suppress angiogenesis and growth of OSCC cells by inhibiting expression of VEGF and IL-8 involved in the blockade of NF-kappaB activity.
Harada
Koji
K
Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan. harako@yamaguchi-u.ac.jp
Ferdous
Tarannum
T
Itashiki
Yasutaka
Y
Takii
Michiyo
M
Mano
Takamichi
T
Mori
Yoshihide
Y
Ueyama
Yoshiya
Y
D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology*; D044182:Benzylisoquinolines / Q000494:pharmacology*; D015153:Blotting, Western; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy* / Q000378:metabolism; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D016209:Interleukin-8 / Q000096:biosynthesis / Q000187:drug effects*; D051379:Mice; D008819:Mice, Nude; D009062:Mouth Neoplasms / Q000188:drug therapy* / Q000378:metabolism; D016328:NF-kappa B / Q000187:drug effects / Q000378:metabolism; D009389:Neovascularization, Pathologic / Q000188:drug therapy; D020133:Reverse Transcriptase Polymerase Chain Reaction; D042461:Vascular Endothelial Growth Factor A / Q000096:biosynthesis / Q000187:drug effects*; D023041:Xenograft Model Antitumor Assays; D052117:Benzodioxoles
D000972:Antineoplastic Agents, Phytogenic; D044182:Benzylisoquinolines; D016209:Interleukin-8; D016328:NF-kappa B; D042461:Vascular Endothelial Growth Factor A; C006947:cepharanthine; D052117:Benzodioxoles