Frontiers in Oncology (Mar 2020)

Chloroquine Inhibits Stemness of Esophageal Squamous Cell Carcinoma Cells Through Targeting CXCR4-STAT3 Pathway

  • Dongli Yue,
  • Dongli Yue,
  • Daiqun Zhang,
  • Xiaojuan Shi,
  • Shasha Liu,
  • Anqi Li,
  • Dong Wang,
  • Dong Wang,
  • Guohui Qin,
  • Guohui Qin,
  • Yu Ping,
  • Yamin Qiao,
  • Yamin Qiao,
  • Xinfeng Chen,
  • Xinfeng Chen,
  • Feng Wang,
  • Renyin Chen,
  • Song Zhao,
  • Lidong Wang,
  • Yi Zhang,
  • Yi Zhang,
  • Yi Zhang

DOI
https://doi.org/10.3389/fonc.2020.00311
Journal volume & issue
Vol. 10

Abstract

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Esophageal squamous cell carcinoma (ESCC) is one of the most prevalent cancers worldwide. Recent studies have shown that cancer stem cells (CSCs) are present in ESCC, are thought to lead to aggressive tumor behavior and the prognosis. The CXC chemokine receptor 4 (CXCR4), is regarded as a putative CSCs marker in various malignancies. Here, we demonstrate that CXCR4 played a key role in ESCC progression and CXCR4 positive ESCC cells possessed stem-like properties. Furthermore, the anti-malarial agent chloroquine (CQ) targeted CXCR4-positive ESCC cells via STAT3 pathway. Therefore, CQ with anti-CSCs effects may be an effective adjunct to current ESCC chemotherapy regimens.

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