Periostin promotes tumor angiogenesis in pancreatic cancer through the Erk/VEGF signaling pathway, suggesting it as a potential target for anti-vascular therapy.
May support periostin targeting in pancreatic cancer models; leaves open clinical translation.
// Yang Liu 1, * , Fan Li 1, * , Feng Gao 1 , Lingxi Xing 1 , Peng Qin 2 , Xingxin Liang 1 , Jiajie Zhang 1 , Xiaohui Qiao 1 , Lizhou Lin 1 , Qian Zhao 3 , Lianfang Du 1 1 Department of Ultrasound, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200080, China 2 Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China 3 Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis and National Ministry of Education, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China * These authors have contributed equally to this work Correspondence to: Lianfang Du, email: lianfang_du@126.com Qian Zhao, email: qzhao@shsmu.edu.cn Keywords: periostin, pancreatic cancer, angiogenesis, Erk, VEGF Received: February 19, 2016 Accepted: April 26, 2016 Published: May 20, 2016 ABSTRACT Pancreatic cancer (PaC) consists of a bulk of stroma cells which contribute to tumor progression by releasing angiogenic factors. Recent studies have found that periostin (POSTN) is closely associate with the metastatic potential and prognosis of PaC. The purpose of this study is to determine the role of POSTN in tumor angiogenesis and explore the precise mechanisms. In this study, we used lentiviral shRNA and human recombinant POSTN protein (rPOSTN) to negatively and positively regulate POSTN expression in vitro . We found that increased POSTN expression promoted the tubule formation dependent on human umbilical vein endothelial cells (HUVECs). Moreover, knockdown of POSTN in PaC cells reduced tumor growth and VEGF expression in vivo . In accordance with these observations, we found that Erk phosphorylation and its downstream VEGF expression were upregulated achieved in rPOSTN-treated groups, opposing results were obversed in POSTN-slienced group. Meanwhile, Erk inhibitor SCH772984 significantly decreased VEGF expression as well as tubule formation of HUVECs in rPOSTN-treated PaC cells. Taken together, these findings suggest that POSTN promotes tumor angiogenesis via Erk/VEGF signaling in PaC and POSTN may be a new target for cancer anti-vascular treatment.
No takes yet. Share an insight, caveat, or question.
Liu et al. (2016) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: