Oncotarget

Research Papers:

Gemcitabine enhances cell invasion via activating HAb18G/CD147-EGFR-pSTAT3 signaling

Bao-Qing Xu, Zhi-Guang Fu, Yao Meng, Xiao-Qing Wu, Bo Wu, Liang Xu, Jian-Li Jiang, Ling Li and Zhi-Nan Chen _

PDF  |  HTML  |  Supplementary Files  |  How to cite

Oncotarget. 2016; 7:62177-62193. https://doi.org/10.18632/oncotarget.11405

Metrics: PDF 2348 views  |   HTML 2542 views  |   ?  


Abstract

Bao-Qing Xu1,*, Zhi-Guang Fu1,*, Yao Meng1,*, Xiao-Qing Wu2, Bo Wu1, Liang Xu2, Jian-Li Jiang1, Ling Li1, Zhi-Nan Chen1

1Department of Cell Biology and Cell Engineering Research Center, State Key Laboratory of Cancer Biology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi’an, China

2Departments of Molecular Biosciences and Radiation Oncology, University of Kansas, Lawrence, Kansas, USA

*These authors have contributed equally to this work

Correspondence to:

Zhi-Nan Chen, email: [email protected]

Ling Li, email: [email protected]

Keywords: gemcitabine, stress, invasion, HAb18G/CD147, EGFR

Received: March 20, 2015    Accepted: August 08, 2016    Published: August 19, 2016

ABSTRACT

Pancreatic cancer, one of the most lethal cancers, has very poor 5-year survival partly due to gemcitabine resistance. Recently, it was reported that chemotherapeutic agents may act as stressors to induce adaptive responses and to promote chemoresistance in cancer cells. During long-term drug treatment, the minority of cancer cells survive and acquire an epithelial-mesenchymal transition phenotype with increased chemo-resistance and metastasis. However, the short-term response of most cancer cells remains unclear. This study aimed to investigate the short-term response of pancreatic cancer cells to gemcitabine stress and to explore the corresponding mechanism. Our results showed that gemcitabine treatment for 24 hours enhanced pancreatic cancer cell invasion. In gemcitabine-treated cells, HAb18G/CD147 was up-regulated; and HAb18G/CD147 down-regulation or inhibition attenuated gemcitabine-enhanced invasion. Mechanistically, HAb18G/CD147 promoted gemcitabine-enhanced invasion by activating the EGFR (epidermal growth factor receptor)-STAT3 (signal transducer and activator of transcription 3) signaling pathway. Inhibition of EGFR-STAT3 signaling counteracted gemcitabine-enhanced invasion, and which relied on HAb18G/CD147 levels. In pancreatic cancer tissues, EGFR was highly expressed and positively correlated with HAb18G/CD147. These data indicate that pancreatic cancer cells enhance cell invasion via activating HAb18G/CD147-EGFR-pSTAT3 signaling. Our findings suggest that inhibiting HAb18G/CD147 is a potential strategy for overcoming drug stress-associated resistance in pancreatic cancer.


Creative Commons License All site content, except where otherwise noted, is licensed under a Creative Commons Attribution 4.0 License.
PII: 11405