Helicobacter pylori-derived heat shock protein 60 enhances angiogenesis via a CXCR2-mediated signaling pathway

Chen Si Lin, Pei Juin He, Wei Tung Hsu, Ming Shiang Wu, Chang Jer Wu, Hsiao Wei Shen, Chia Hsiang Hwang, Yiu Kay Lai, Nu Man Tsai, Kuang-Wen Liao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Helicobacter pylori is a potent carcinogen associated with gastric cancer malignancy. Recently, H. pylori Heat shock protein 60 (HpHSP60) has been reported to promote cancer development by inducing chronic inflammation and promoting tumor cell migration. This study demonstrates a role for HpHSP60 in angiogenesis, a necessary precursor to tumor growth. We showed that HpHSP60 enhanced cell migration and tube formation, but not cell proliferation, in human umbilical vein endothelial cells (HUVECs). HpHSP60 also indirectly promoted HUVEC proliferation when HUVECs were co-cultured with supernatants collected from HpHSP60-treated AGS or THP-1 cells. The angiogenic array showed that HpHSP60 dramatically induced THP-1 cells and HUVECs to produce the chemotactic factors IL-8 and GRO. Inhibition of CXCR2, the receptor for IL-8 and GRO, or downstream PLCβ2/Ca2+-mediated signaling, significantly abolished HpHSP60-induced tube formation. In contrast, suppression of MAP K or PI3 K signaling did not affect HpHSP60-mediated tubulogenesis. These data suggest that HpHSP60 enhances angiogenesis via CXCR2/PLCβ2/Ca2+ signal transduction in endothelial cells.

Original languageEnglish
Pages (from-to)283-289
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume397
Issue number2
DOIs
StatePublished - 25 Jun 2010

Keywords

  • Angiogenesis
  • CXCR2
  • Heat shock protein 60
  • Helicobacter pylori

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