Establishment and characterization of an expanding-type gastric cancer cell line by Ming's classification

Xu,Hao; Peng,Ji-Gui; Zhuang,Yi-Fan; Chen,Jia-Jia; Luo,Qi-Cong; Huang,Wei-Feng; Lin,Chun-Dong; Cai,Jian-Chun

doi:10.3892/or.2016.5090

Establishment and characterization of an expanding-type gastric cancer cell line by Ming's classification

Authors:
- Hao Xu
- Ji-Gui Peng
- Yi-Fan Zhuang
- Jia-Jia Chen
- Qi-Cong Luo
- Wei-Feng Huang
- Chun-Dong Lin
- Jian-Chun Cai
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Affiliations: Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, Fujian 361005, P.R. China, Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen, Fujian 361005, P.R. China
Published online on: September 14, 2016 https://doi.org/10.3892/or.2016.5090
Pages: 3030-3036

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Abstract

According to Ming's classification, gastric cancer (GC) can be divided into two types: expanding and infiltrative. The two types are readily recognizable by histology: expanding carcinomas grow en masse and by expansion, resulting in the formation of discrete tumour nodules, whereas in infiltrative carcinoma, tumour cells invade individually. Both types show varying degrees of cell maturation. The two types of carcinomas have vastly different pathological and clinical features. However, little is known concerning the mechanisms underlying these differences since no GC cell line models are available. For comprehensive and insightful analyses of mechanisms and treatment methods, new cell lines derived from expanding- and infiltrative-type gastric tumours are urgently needed. In the present study, we established an expanding-type GC cell line from a 72-year-old male patient. Different in vitro and in vivo methods were used to characterize the phenotypes of this cell line. This GC cell line was named XGC-2 and had an ~60 h doubling time. The cell line displayed strong colony formation and tumourigenicity in nude mice and had complicated chromosomal abnormalities. XGC-2 cells showed some markers of epithelial-to-mesenchymal transition (EMT), with decreased E-cadherin expression levels and increased vimentin expression levels. The XGC-2 cell line may be useful for future studies of GC development, progression, metastasis and therapy.

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