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Article Open Access

Effect and prognostic significance of the KAI1 gene in human gastric carcinoma

  • Authors:
    • Jing Guo
    • Kai‑Xi Fan
    • Li Xie
    • Jia‑Jia Xiao
    • Kai Chen
    • Li‑Na Hui
    • Zhong‑Fa Xu
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan, Shandong 250031, P.R. China, Basic Laboratory, Shandong Cancer Hospital and Institute, Jinan, Shandong 250117, P.R. China, Department of Neurology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200080, P.R. China, Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650118, P.R. China
    Copyright: © Guo et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2035-2042
    |
    Published online on: August 12, 2015
       https://doi.org/10.3892/ol.2015.3604
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Abstract

The present study aimed to explore the effect and mechanism of the Kangai 1 (KAI1) gene in regulating the migration and invasion of gastric carcinoma cells, and the prognostic significance of this gene in gastric cancer patients. Immunohistochemistry and in situ hybridization were used to investigate the role of KAI1 in the progression and prognosis of gastric cancer. The pEGFP‑N1‑KAI1 plasmid was transfected into human gastric carcinoma SGC7901 cells using liposomes. The effect of transfection with the KAI1 gene was measured using a reverse transcription‑semi‑quantitative polymerase chain reaction (RT‑sqPCR) assay. The Transwell chamber assay was used to study the metastatic and invasive ability of SGC7901 cells. Gastric cancer metastasis‑associated genes, including hypoxia‑inducible factor (HIF)‑1α, matrix metalloproteinase (MMP)‑2, MMP‑9, basic fibroblast growth factor (bFGF), and urease plasminogen activator (uPA) were measured by RT‑sqPCR prior to and following transfection with the KAI1 gene. The expression of KAI1 protein and mRNA was associated with the differentiation degree of gastric cancer, presence of lymph node metastasis, tumor‑node‑metastasis stage, depth of invasion and the survival time of patients. The migratory and invasive abilities of SGC7901 cells were significantly decreased subsequent to transfection with the KAI1 gene, and the expression of bFGF and uPA was downregulated. It was concluded that the tumor suppressor gene KAI1 inhibits the migration and invasion of gastric carcinoma cells, possibly by suppressing the expression of uPA. Patients that expressed KAI1 may demonstrate an improved prognosis.
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Copy and paste a formatted citation
Spandidos Publications style
Guo J, Fan KX, Xie L, Xiao JJ, Chen K, Hui LN and Xu ZF: Effect and prognostic significance of the KAI1 gene in human gastric carcinoma. Oncol Lett 10: 2035-2042, 2015.
APA
Guo, J., Fan, K., Xie, L., Xiao, J., Chen, K., Hui, L., & Xu, Z. (2015). Effect and prognostic significance of the KAI1 gene in human gastric carcinoma. Oncology Letters, 10, 2035-2042. https://doi.org/10.3892/ol.2015.3604
MLA
Guo, J., Fan, K., Xie, L., Xiao, J., Chen, K., Hui, L., Xu, Z."Effect and prognostic significance of the KAI1 gene in human gastric carcinoma". Oncology Letters 10.4 (2015): 2035-2042.
Chicago
Guo, J., Fan, K., Xie, L., Xiao, J., Chen, K., Hui, L., Xu, Z."Effect and prognostic significance of the KAI1 gene in human gastric carcinoma". Oncology Letters 10, no. 4 (2015): 2035-2042. https://doi.org/10.3892/ol.2015.3604
Copy and paste a formatted citation
x
Spandidos Publications style
Guo J, Fan KX, Xie L, Xiao JJ, Chen K, Hui LN and Xu ZF: Effect and prognostic significance of the KAI1 gene in human gastric carcinoma. Oncol Lett 10: 2035-2042, 2015.
APA
Guo, J., Fan, K., Xie, L., Xiao, J., Chen, K., Hui, L., & Xu, Z. (2015). Effect and prognostic significance of the KAI1 gene in human gastric carcinoma. Oncology Letters, 10, 2035-2042. https://doi.org/10.3892/ol.2015.3604
MLA
Guo, J., Fan, K., Xie, L., Xiao, J., Chen, K., Hui, L., Xu, Z."Effect and prognostic significance of the KAI1 gene in human gastric carcinoma". Oncology Letters 10.4 (2015): 2035-2042.
Chicago
Guo, J., Fan, K., Xie, L., Xiao, J., Chen, K., Hui, L., Xu, Z."Effect and prognostic significance of the KAI1 gene in human gastric carcinoma". Oncology Letters 10, no. 4 (2015): 2035-2042. https://doi.org/10.3892/ol.2015.3604
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