Volume 21, Issue 12 pp. 3360-3371
Original Article
Open Access

PTTG3P promotes gastric tumour cell proliferation and invasion and is an indicator of poor prognosis

Weiwei Weng

Weiwei Weng

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

These authors have contributed equally to this work.Search for more papers by this author
Shujuan Ni

Shujuan Ni

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

These authors have contributed equally to this work.Search for more papers by this author
Yiqin Wang

Yiqin Wang

Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China

These authors have contributed equally to this work.Search for more papers by this author
Midie Xu

Midie Xu

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Qiongyan Zhang

Qiongyan Zhang

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Yusi Yang

Yusi Yang

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Yong Wu

Yong Wu

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Qinghua Xu

Qinghua Xu

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Peng Qi

Peng Qi

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Cong Tan

Cong Tan

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Dan Huang

Dan Huang

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Ping Wei

Ping Wei

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

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Zhaohui Huang

Zhaohui Huang

Wuxi Oncology Institute, the Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China

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Yuqing Ma

Yuqing Ma

Department of Pathology, First Hospital Affiliated to Xinjiang Medical University, Urumqi, China

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Wei Zhang

Wei Zhang

Department of Pathology, First Hospital Affiliated to Xinjiang Medical University, Urumqi, China

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Weiqi Sheng

Corresponding Author

Weiqi Sheng

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

Correspondence to: Dr. Xiang DU M.D.

E-mail: [email protected]

Dr. Weiqi SHENG M.D., Ph.D.

E-mail: [email protected]

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Xiang Du

Corresponding Author

Xiang Du

Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China

Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China

Institute of Pathology, Fudan University, Shanghai, China

Department of Pathology, First Hospital Affiliated to Xinjiang Medical University, Urumqi, China

Institutes of Biomedical Sciences, Fudan University, Shanghai, China

Correspondence to: Dr. Xiang DU M.D.

E-mail: [email protected]

Dr. Weiqi SHENG M.D., Ph.D.

E-mail: [email protected]

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First published: 19 June 2017
Citations: 37

Abstract

Pseudogenes play a crucial role in cancer progression. However, the role of pituitary tumour-transforming 3, pseudogene (PTTG3P) in gastric cancer (GC) remains unknown. Here, we showed that PTTG3P expression was abnormally up-regulated in GC tissues compared with that in normal tissues both in our 198 cases of clinical samples and the cohort from The Cancer Genome Atlas (TCGA) database. High PTTG3P expression was correlated with increased tumour size and enhanced tumour invasiveness and served as an independent negative prognostic predictor. Moreover, up-regulation of PTTG3P in GC cells stimulated cell proliferation, migration and invasion both in vitro in cell experiments and in vivo in nude mouse models, and the pseudogene functioned independently of its parent genes. Overall, these results reveal that PTTG3P is a novel prognostic biomarker with independent oncogenic functions in GC.

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