Tumor Biology

, Volume 36, Issue 10, pp 8041–8045 | Cite as

Reduced expression of the long non-coding RNA AI364715 in gastric cancer and its clinical significance

  • Shengqian Zhu
  • Jinqin Mao
  • Yongfu Shao
  • Fang Chen
  • Xiaoqin Zhu
  • Dingli Xu
  • Xinjun Zhang
  • Junming Guo
Research Article


Long non-coding RNA (lncRNA), which is greater than 200 nucleotides, is a class of RNA molecules without protein coding function. In recent years, studies have shown that lncRNAs are associated with cancers. They are affecting the occurrence and development of cancers. However, the diagnostic significances of lncRNAs in gastric cancer are largely unknown. In this study, we focused on AI364715, one typical lncRNA. A total of 186 samples were collected from two cancer centers. To find the potential association between its level and gastric cancer, we first collected 75 paired gastric cancer tissues and normal tissues, which are 5 cm away from the edge of carcinoma. Besides, 18 human healthy gastric mucosa and 18 gastric precancerous lesions (dysplasia) were also collected. Quantitative reverse transcription-polymerase chain reaction (RT-PCR) was first used to detect the expression level of AI364715 at multiple stages of gastric tumorigenesis. Then, the relationships between AI364715 level and the clinicopathological factors of patients with gastric cancer were analyzed. The results showed that the expression level of AI364715 in gastric cancer tissues was downregulated. Meanwhile, its expression level was closely associated with tumor size and differentiation. More importantly, AI364715 expression level was significantly changed in dysplasia, the typical precancerous lesions. Taken together, AI364715 may be a potential biomarker for the diagnosis of gastric cancer.


Long non-coding RNA AI364715 Gastric cancer Tumor marker 



This work was supported by the Zhejiang Provincial Natural Science Foundation of China (No. LY14C060003), the Applied Research Project on Nonprofit Technology of Zhejiang Province (No. 2014C33222), the National Natural Science Foundation of China (No. 81171660), the Scientific Innovation Team Project of Ningbo (No. 2011B82014), and the K. C. Wong Magna Fund in Ningbo University.

Conflicts of interest



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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Shengqian Zhu
    • 1
  • Jinqin Mao
    • 1
  • Yongfu Shao
    • 1
  • Fang Chen
    • 1
  • Xiaoqin Zhu
    • 1
  • Dingli Xu
    • 1
  • Xinjun Zhang
    • 2
  • Junming Guo
    • 1
  1. 1.Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of PathophysiologyNingbo University School of MedicineNingboChina
  2. 2.Department of GastroenterologyThe Affiliated Hospital of Ningbo University School of MedicineNingboChina

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