• 作者： Zhongzheng Guan, Bingtan Song, Fengjun Liu, Dong Sun, Kexin Wang, Hui Qu
• 作者服務機構： Department of General Surgery, Qilu Hospital, Shandong University, No.107, West Wenhua Road, Jinan 250012, Shandong Province, China
• 中文摘要： --
• 英文摘要： Background:
  
  Mounting evidences have showed the important role of transforming growth factor-β (TGF-β) in immunological surveillance of tumors. Some studies have also indicated human leukocyte antigen (HLA)-G-associated immune escape involving TGF-β management in gastric cancer (GC). However, the mechanism underlying it is unclear. This study aims to verify the correlations between HLA-G and TGF-β, involving the potential targeting of miR-152 on HLA-G.
  
  
  
  Results:
  
  TGF-β and HLA-G levels were analyzed in blood samples from twenty GC patients with ELISA assays, while TGF-β showed directly proportional to HLA-G levels in GC patients, and TGF-β induced HLA-G up-regulation was also confirmed in GC cell lines. Furthermore, miR-152 expression could be inhibited by TGF-β, and the negative post-transcriptionally regulation of miR-152 on HLA-G was also demonstrated through gain- and loss-of-function studies. Besides, miR-152 overexpression repressed HLA-G up-regulation induced by TGF-β. And, miR-152 expression levels showed inversely proportional to both HLA-G and also TGF-β levels in GC patients.
  
  
  
  Conclusion:
  
  TGF-β could induce HLA-G expression in GC by inhibiting miR-152, involving its negative regulation on HLA-G. Since TGF-β induced HLA-G up-regulation plays important role in immune escape, a potential application of miR-152 was suggested in GC treatment, or miR-152 might be one potential biomarker for GC.
• 中文關鍵字： --
• 英文關鍵字： Gastric cancer; miR-152; TGF-β; HLA-G