Wenzhang Zhang^*1, Xin Wu^†1, Liang Hu^*, Yuefan Ma^*, Zihan Xiu^*, Bingyu Huang^*, Yun Feng^*, Xudong Tang^*†‡

Oncology Research, Vol.25, No.5, pp. 843-852, 2017, DOI:10.3727/096504016X14813880882288

Abstract The human papillomavirus (HPV) infection may be associated with the development and progression of nonsmall cell lung cancer (NSCLC). However, the role of HPV-16 oncoproteins in the development and progression of NSCLC is not completely clear. Epithelial–mesenchymal transition (EMT), a crucial step for invasion and metastasis, plays a key role in the development and progression of NSCLC. Here we explored the effect of HPV-16 oncoproteins on EMT and the underlying mechanisms. NSCLC cell lines, A549 and NCI-H460, were transiently transfected with the EGFP-N1-HPV-16 E6 or E7 plasmid. Real-time PCR and Western blot analysis were performed… More >

Li-Zhou Fang^*, Jian-Qing Zhang^*, Ling Liu^*, Wei-Ping Fu^*, Jing-Kui Shu^*, Jia-Gang Feng^*, Xiao Liang^†

Oncology Research, Vol.25, No.5, pp. 819-829, 2017, DOI:10.3727/096504016X14772349843854

Abstract Cancer stem cells (CSCs) are responsible for tumorigenesis and recurrence, so targeting CSCs is an effective method to potentially cure cancer. BTB/POZ domain-containing protein 7 (Btbd7) has been found in various cancers, including lung cancer and liver cancer, but the role of Btbd7 in non-small cell lung cancer (NSCLC), CSC self-renewal, and chemoresistance is still unknown. Therefore, in this study we found that the ratio of tumor sphere formation and stem cell transcription factors in CD133⁺ cells was dramatically enhanced compared to parental cells, which indicated successful sorting of CD133⁺ cells from A549. Meanwhile, Btbd7 and More >

Dengfeng Zhang¹, Feng Jiang¹, Xiao Wang, Guojun Li

Oncology Research, Vol.25, No.5, pp. 743-751, 2017, DOI:10.3727/096504016X14772395226335

Abstract Ubiquitin-specific protease 22 (USP22), a novel deubiquitinating enzyme, belongs to an extended family of proteins that have ubiquitin hydrolase activity. Recently, USP22 has attracted widespread attention because of its implication in carcinogenesis. However, there have been no studies, to our knowledge, investigating the expression of USP22 in osteosarcoma (OS) and its association with OS progression. In this study, we explored the role of USP22 in OS. We demonstrated that USP22 was highly expressed in OS tissue and cell lines. Downregulation of USP22 inhibited OS cell proliferation, invasion, and epithelial–mesenchymal transition (EMT) in vitro. In addition, More >

Zewei Zhang^*1, Chao Xu^†1, Xiafang Zhang^†1, Lulu Huang^†, Cheng Zheng^‡, Haitao Chen^†, Yan Wang^†, Haixing Ju^§, Qinghua Yao^†

Oncology Research, Vol.25, No.5, pp. 691-699, 2017, DOI:10.3727/096504016X14774897404770

Abstract The tripartite motif-containing protein 11 (TRIM11), a member of the TRIM protein family, has attracted much attention because of its involvement in the development of the central nervous system. It has gained renewed focus because of its newly found function in promoting tumors. However, little is known about its role in hepatocellular carcinoma (HCC). In the present study, we found TRIM11 to be overexpressed in HCC tissues and cell lines. Downregulation of TRIM11 inhibited HCC cell proliferation and invasion in vitro and in vivo as well as suppressed the epithelial–mesenchymal transition (EMT) process. In addition, More >

Sheng-Qiang Lu^*1, Yan Qiu^†1, Wei-Jie Dai^‡, Xiao-Yu Zhang^§

Oncology Research, Vol.25, No.5, pp. 681-689, 2017, DOI:10.3727/096504016X14771034190471

Abstract Forkhead box R2 (FOXR2), a member of the FOX gene family, has not been very well investigated for its role in cancer. A recent study has shown that FOXR2 is highly expressed in breast cancer samples and is associated with poor prognosis. In addition, FOXR2 was identified as an oncogene in medulloblastoma. Nevertheless, whether FOXR2 plays a role in colorectal cancer (CRC) remains unclear. In the present study, we conducted several in vitro and in vivo studies to investigate the expression and effect of FOXR2 in CRC. The study results demonstrated that FOXR2 was upregulated More >

Zhongwei Wang, Yali Wang, Hongtao Ren, Yingying Jin, Ya Guo

Oncology Research, Vol.25, No.4, pp. 571-577, 2017, DOI:10.3727/97818823455816X14760478220149

Abstract Zinc and ring finger 3 (ZNRF3), which belongs to the E3 ubiquitin ligase family, is involved in the progression and development of cancer. However, the expression and function of ZNRF3 in human nasopharyngeal carcinoma (NPC) remain unclear. Thus, the aim of this study was to investigate the role of ZNRF3 in human NPC. Our results showed that ZNRF3 was downregulated in NPC cell lines. Restoration of ZNRF3 significantly inhibited the proliferation of NPC cells and tumor xenograft growth in vivo. In addition, overexpression of ZNRF3 suppressed migration and invasion, as well as attenuated the epithelial–mesenchymal More >

Hongwei Tan, Jin Qi, Guanghua Chu, Zhaoyang Liu

Oncology Research, Vol.25, No.4, pp. 551-558, 2017, DOI:10.3727/096504016X14758370595285

Abstract Tripartite motif 16 (TRIM16), a member of the RING B-box coiled-coil (RBCC)/tripartite motif (TRIM) protein family, has been shown to play a role in tumor development and progression. However, the role of TRIM16 in ovarian cancer has never been revealed. Thus, in this study, we investigated the roles and mechanisms of TRIM16 in ovarian cancer. Our results demonstrated that TRIM16 expression was low in ovarian cancer cell lines. In addition, overexpression of TRIM16 significantly inhibited the migration and invasion in vitro, as well as suppressed the epithelial–mesenchymal transition (EMT) phenotype in ovarian cancer cells. Furthermore, More >

Guojun Wang, Yang Fu, Guanghui Liu, Yanwei Ye, Xiefu Zhang

Oncology Research, Vol.25, No.3, pp. 355-364, 2017, DOI:10.3727/096504016X14738114257367

Abstract MicroRNAs (miRNAs) play an important role in carcinogenesis. miR-218 is one of the most known miRNAs and has been demonstrated to inhibit progression in gastric cancer. However, the underlying molecular mechanism is not established. In this study, qRT-PCR and Western blot indicated that miR-218 was downregulated in gastric cancer cell lines SGC7901 and BGC823 compared to that in normal gastric epithelial cell line GES-1. MTT and wound scratch assays suggested that overexpression of miR-218 markedly suppressed cell proliferation, migration, and EMT of gastric cancer cells. Furthermore, we proved that WASF3 was a direct target of More >

Juntao Yao^*†, Xuan Yao^‡, Tao Tian^*, Xiao Fu^*, Wenjuan Wang^*, Suoni Li^§, Tingting Shi^*, Aili Suo^*, Zhiping Ruan^*, Hui Guo^*, Kejun Nan^*, Xiongwei Huo^¶

Oncology Research, Vol.25, No.3, pp. 305-316, 2017, DOI:10.3727/096504016X14734149559061

Abstract ABCB5 belongs to the ATP-binding cassette (ABC) superfamily, which is recognized for playing a role in the failure of chemotherapy. ABCB5 has also been found to be overexpressed at the transcriptional level in a number of cancer subtypes, including breast cancer. However, the exact mechanism ABCB5 uses on cancer cell metastasis is still unclear. In the present study, we demonstrate that ABCB5 expression was increased in metastatic tissues when compared with nonmetastatic tissues. ABCB5 can significantly enhance metastasis and epithelial–mesenchymal transition (EMT), while knockdown of ABCB5 inhibited these processes. Microarray analysis indicated that ZEB1 may More >

Jianpeng Liu^*, Wei Li^†, Shunshun Liu^*, Xu Zheng^*, Lin Shi^*, Weitao Zhang^*, Hongfa Yang^*

Oncology Research, Vol.25, No.2, pp. 225-232, 2017, DOI:10.3727/096504016X14732772150587

Abstract Collagen triple helix repeat containing 1 (CTHRC1), an extracellular matrix-related protein, has been found to be upregulated in many solid tumors and contributes to tumorigenesis. We found that CTHRC1 is overexpressed in glioblastoma tissues and cells. By using the technique of RNA interference, the expression of CTHRC1 in the human glioblastoma U-87MG cell line was downregulated, and the proliferation and migration of U-87MG cells were examined. The results showed that the knockdown of CTHRC1 exerts inhibitory effects on the proliferation and migration ability of U-87MG cells. Knockdown of CTHRC1 expression in U-87MG cells resulted in More >