Zhi-Hua Zhou1,2,3, Cheng-Dong Ji1,2, Jiang Zhu1, Hua-Liang Xiao4, Hai-Bin Zhao3, You-Hong Cui1,2, Xiu-Wu Bian5,6. 1. Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Gaotanyan 30, Chongqing, 400038, China. 2. Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China. 3. Department of Pathology, The 101 Hospital of People's Liberation Army, Wuxi, Jiangsu Province, China. 4. Department of Pathology, Daping Hospital, Third Military Medical University, Chongqing, China. 5. Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University, Gaotanyan 30, Chongqing, 400038, China. bianxiuwu@263.net. 6. Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China. bianxiuwu@263.net.
Abstract
PURPOSE: To evaluate the prognostic value and pathobiological significance of Glasgow microenvironment score (GMS), a parameter based on tumor stroma percentage and inflammatory cell infiltration, in gastric cancer. METHODS: A total of 225 cases of gastric cancer were histologically reviewed, and GMS was evaluated for each case. The association between GMS and patients' survival was investigated. Then the relationship between GMS and mismatch repair (MMR) status, Epstein-Barr virus (EBV) infection were determined using immunohistochemistry (IHC) and in situ hybridization, and the expression of PD1/PD-L1 was examined. Furthermore, the amount of cancer-associated fibroblasts (CAFs), the content and maturity of collagen components were detected using IHC, Picrosirius Red staining and second harmonic generation imaging. RESULTS: GMS was significantly associated with clinical outcomes of gastric cancer, and multivariate analysis indicated that GMS was an independent factor (HR 1.725, P = 0.002). Low GMS was a manifestation of better prognosis and inflammatory tumor microenvironment, which was related to MMR deficiency (P = 0.042) and EBV infection (P = 0.032), and within this microenvironment, expression of PD-L1 in carcinoma cells (P = 0.030) or in inflammatory cells (P = 0.029) was significantly higher. In contrast, high GMS linked to a poorer survival and desmoplastic stroma, in which there existed markedly increased CAFs and collagen deposition. CONCLUSION: GMS can serve as a useful prognostic factor for gastric cancer, and according to GMS, the tumor microenvironment in this cancer type may be partially classified as inflammatory or desmoplastic microenvironment that possesses different pathobiological features.
PURPOSE: To evaluate the prognostic value and pathobiological significance of Glasgow microenvironment score (GMS), a parameter based on tumor stroma percentage and inflammatory cell infiltration, in gastric cancer. METHODS: A total of 225 cases of gastric cancer were histologically reviewed, and GMS was evaluated for each case. The association between GMS and patients' survival was investigated. Then the relationship between GMS and mismatch repair (MMR) status, Epstein-Barr virus (EBV) infection were determined using immunohistochemistry (IHC) and in situ hybridization, and the expression of PD1/PD-L1 was examined. Furthermore, the amount of cancer-associated fibroblasts (CAFs), the content and maturity of collagen components were detected using IHC, Picrosirius Red staining and second harmonic generation imaging. RESULTS:GMS was significantly associated with clinical outcomes of gastric cancer, and multivariate analysis indicated that GMS was an independent factor (HR 1.725, P = 0.002). Low GMS was a manifestation of better prognosis and inflammatory tumor microenvironment, which was related to MMR deficiency (P = 0.042) and EBV infection (P = 0.032), and within this microenvironment, expression of PD-L1 in carcinoma cells (P = 0.030) or in inflammatory cells (P = 0.029) was significantly higher. In contrast, high GMS linked to a poorer survival and desmoplastic stroma, in which there existed markedly increased CAFs and collagen deposition. CONCLUSION:GMS can serve as a useful prognostic factor for gastric cancer, and according to GMS, the tumor microenvironment in this cancer type may be partially classified as inflammatory or desmoplastic microenvironment that possesses different pathobiological features.
Authors: Cole R Drifka; Jo Tod; Agnes G Loeffler; Yuming Liu; Gareth J Thomas; Kevin W Eliceiri; W John Kao Journal: Mod Pathol Date: 2015-09-04 Impact factor: 7.842
Authors: B W Kang; A N Seo; S Yoon; H I Bae; S W Jeon; O K Kwon; H Y Chung; W Yu; H Kang; J G Kim Journal: Ann Oncol Date: 2015-12-16 Impact factor: 32.976