Tianjin Medical Journal ›› 2023, Vol. 51 ›› Issue (5): 522-526.doi: 10.11958/20221409

• Clinical Research • Previous Articles     Next Articles

Relationship between the expression of GPR120 and GPR40 and clinicopathological features and survival outcome of ovarian cancer patients

LI Juan(), NI Huihua()   

  1. Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong 226000, China
  • Received:2022-09-05 Revised:2022-11-24 Published:2023-05-15 Online:2023-05-05
  • Contact: △E-mail:yyy123hs@163.com

Abstract:

Objective To investigate the expression of G protein coupled receptor 120 (GPR120) and G protein coupled receptor 40 (GPR40) and their clinical value as prognostic biomarkers for ovarian cancer patients. Methods The paraffin embedded samples and clinicopathological data of 128 ovarian cancer patients were systematically collected. The expression levels of GPR120 and GPR40 in ovarian cancer samples were detected by immunohistochemistry, and the relationships between expression levels of GPR120 and GPR40 and clinicopathological characteristics of ovarian cancer patients were analyzed. Kaplan-Meier method was used to draw survival curves of patients with high and low expression levels of GPR120 and GPR40, and Cox proportional hazard model were used to analyze predictors of disease free survival (DFS) for ovarian cancer patients. Results The positive rates of GPR120 and GPR40 expression in ovarian cancer samples were 62.5% (80/128) and 56.3% (72/128), respectively. The positive expression rates of GPR120 in patients with FIGO stage Ⅱ—Ⅲ and histology G3 were significantly higher than those in patients with FIGO stage Ⅰ and histology G1—G2, respectively. Similarly, the positive expression rates of GPR40 in FIGO Ⅱ—Ⅲ and histologic G3 patients were significantly higher than those in patients with FIGO Ⅰ and histologic G1—G2, respectively. Survival analysis showed that the 4-year DFS rate of patients with high GPR120 expression was decreased compared with that of patients with low GPR120 expression (56.9% vs. 70.7%, Log-rank χ2= 5.144, P=0.023). The 4-year DFS rate of patients with high GPR40 expression was significantly lower than that of patients with low GPR40 expression (57.7% vs. 68.4%,Log-rank χ2= 4.491, P=0.034). The univariate and multivariate Cox regression analysis identified that high GPR120 expression, high GPR40 expression, FIGO stage Ⅱ—Ⅲ and residual disease size ≥ 1 cm were independent prognostic factors for ovarian cancer patients. Conclusion GPR120 and GPR40 are useful biomarkers to predict aggressive features and poor prognosis of ovarian cancer patients, and their dysregulation might be implicated in malignant transformation and cancer progression.

Key words: ovarian neoplasms, G protein coupled receptor 120, G protein coupled receptor 40, prognosis, disease-free survival, biomarkers

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