Carcinogenesis, Teratogenesis & Mutagenesis ›› 2024, Vol. 36 ›› Issue (1): 53-57,65.doi: 10.3969/j.issn.1004-616x.2024.01.009

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Expression of CXCR2 in esophageal cancer tissues and its impact on biological behavior of esophageal cancer cells

HUANG Conggai, LIU Qing, ZHENG Shutao, LIU Tao, TAN Yiyi, PENG Tianyuan, CHEN Jiao, LU Xiaomei   

  1. The First Affiliated Hospital of Xinjiang Medical University, State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi 830011, Xinjiang, China
  • Received:2023-11-01 Revised:2023-12-02 Online:2024-02-19 Published:2024-02-19

Abstract: OBJECTIVE: To investigate expression of the CXC receptor 2(CXCR2) in esophageal squamous cell carcinoma(ESCC) tissues and its impact on the biological behavior of esophageal cancer cells.METHODS: A total of 74 cases of surgically removed ESCC tissues were collected as the study group and 74 cases of paired adjacent normal esophageal tissues were collected as the control group. CXCR2 expression was detected by immunohistochemical staining, and the difference of CXCR2 expression level between the study and the control groups was compared, and the relationship between CXCR2 expression and clinicopathological characteristics was analyzed. The effects of CXCR2 antagonist SCH527123 on the biological behavior of esophageal cancer cells KYSE30 were examined by CCK-8 cell proliferation, plate colony formation, cell migration and invasion assay. RESULTS: The positive expression rate of CXCR2 in ESCC was 73.0%(54/74), which was significantly higher than the 13.5%(10/74) in the adjacent normal tissues(χ2=53.298, P=0.000). Significant differences were also detected in relation to the differentiation degree and lymph node metastasis of ESCC(χ2=5.515, P=0.019; χ2=7.320, P=0.007). However, the expression was not significantly related to gender, age, tumor location, gross classification of tumor, tumor diameter, depth of invasion, vessel emboli and nerve invasion(P>0.05). In the KYSE30 cells, application of the antagonist SCH527123 significantly inhibited their proliferation, migration, and invasion. CONCLUSION: CXCR2 expression was up regulated in ESCC tissues and was associated with poor prognosis of patients.CXCR2 antagonist SCH527123 inhibited the proliferation, migration, and invasion of esophageal cancer cells in vitro. CXCR2 may therefore be a molecular marker for molecular prediction and targeted therapy of esophageal cancer.

Key words: CXCR2, esophageal squamous cell carcinoma, clinical significance, pathological features, targeted therapy, biological behavior

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