Prognostic significance of galectin-1 and vasculogenic mimicry in patients with gastric cancer
Received 19 February 2018
Accepted for publication 29 March 2018
Published 29 May 2018 Volume 2018:11 Pages 3237—3244
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Cristina Weinberg
Peer reviewer comments 4
Editor who approved publication: Dr William Cho
Xiaolan You,1,2 Yuanjie Wang,2 Jian Wu,2 Qinghong Liu,2 Dehu Chen,2 Dong Tang,3 Daorong Wang3
1Department of Integrated Traditional Chinese and Western Medicine, Medical College of Yangzhou University, Yangzhou, Jiangsu Province, People’s Republic of China; 2Department of Gastrointestinal Surgery, Taizhou People’s Hospital, Taizhou, Jiangsu Province, People’s Republic of China; 3Department of Gastrointestinal Surgery, Clinical Medical College of Yangzhou University (Subei People’s Hospital of Jiangsu Province), Yangzhou, Jiangsu Province, People’s Republic of China
Introduction: We evaluated the expression of galectin-1 (Gal-1) and vasculogenic mimicry (VM) in gastric cancer (GC) and investigated their relationships with the clinicopathological factors and prognostic significance in GC.
Materials and methods: Immunohistochemical (IHC) staining and CD34–periodic acid-Schiff double stain were used to investigate Gal-1 expression and VM in paraffin-embedded sections from 127 patients with GC of all tumor stages. The relationships between Gal-1 expression and VM, clinicopathological variables, and survival were analyzed. P < 0.05 was considered statistically significant.
Results: Among the 127 cases, 86 (67.7%) were positive for Gal-1; VM was detected in 29 cases (22.8%). There was a significant association between VM and the Gal-1 IHC staining; all cases with VM were positive for Gal-1 staining. Gal-1 expression and VM in primary GC tissue were associated with tumor size, differentiation, depth of tumor invasion, stage, lymph node metastases, and tumor emboli in microvessels (all, P < 0.05). Kaplan–Meier analysis revealed that the overall survival time was 52.56 ± 2.44 months (95% confidence interval [CI]: 47.77–57.35) for patients with Gal-1-negative and VM-negative primary GC tissue, 43.83 ± 2.17 months (95% CI: 39.58–48.08) for patients with Gal-1-positive but VM-negative primary GC tissue, and 23.97 ± 2.44 months (95% CI: 19.18–28.76) for patients with Gal-1-positive and VM-positive primary GC tissue (χ2 = 60.21, P < 0.01). Gal-1 expression was positively associated with VM in primary GC tissue.
Conclusion: Both Gal-1 expression and VM in primary GC tissue are indicators of poor prognosis for GC after gastrectomy, and Gal-1 may be a novel target for treating VM in GC.
Keywords: galectin-1, vasculogenic mimicry, gastric cancer, prognosis
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