Human bronchial smooth muscle cell proliferation via thromboxane A 2 receptor

Yusuke Suzuki, Koichiro Asano, Yoshiki Shiraishi, Tsuyoshi Oguma, Tetsuya Shiomi, Koichi Fukunaga, Takeshi Nakajima, Kyoko Niimi, Kazuhiro Yamaguchi, Akitoshi Ishizaka

研究成果: Article査読

10 被引用数 (Scopus)


Thromboxane A 2 receptor (TP) mediates bronchial smooth muscle cell (BSMC) contraction, airway hyperresponsiveness, and airway inflammation in patients with asthma. In the present study, a pathogenic role of TP activation in airway remodeling was examined using primary cultures of human BSMC. A TP agonist, I-BOP, concentration-dependently enhanced not only bromodeoxyuridine (BrdU) uptake but also cell proliferation of BSMC. A TP-selective antagonist, AA-2414, blocked the effects of I-BOP on both BrdU uptake and cell proliferation. I-BOP-induced BrdU uptake was significantly blocked by two non-selective tyrosine kinase inhibitors, genistein and herbimycin A, or a Src family tyrosine kinase inhibitor, PP2, but not by an inhibitor of epidermal growth factor (EGF) receptor-associated tyrosine kinase, AG1478. In conclusion, TP receptor activation causes DNA synthesis and cell proliferation of human BSMC by activating tyrosine kinases including Src, but not by EGF receptor transactivation.

ジャーナルProstaglandins Leukotrienes and Essential Fatty Acids
出版ステータスPublished - 2004 12月

ASJC Scopus subject areas

  • 臨床生化学
  • 細胞生物学


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