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Oncology Research

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https://read.qxmd.com/read/30764901/olfm4-inhibits-epithelial-mesenchymal-transition-and-metastatic-potential-of-cervical-cancer-cells
#1
Juan Li, Chunyan Liu, Dawei Li, Meng Wan, Hong Zhang, Xiaoxia Zheng, Xuemei Jie, Pengju Zhang, Hongchun Hou, Qing Sun, Jingjing Li
OLFM4 has been shown to play an important role in tumor initiation and progression. This study aims to investigate the role of OLFM4 in metastatic cervical cancer and its underlying mechanism. Here we discover that OLFM4 expression is significantly reduced in metastatic cervical cancer. Accordingly, overexpression of OLFM4 inhibits epithelial-mesenchymal transition (EMT), migration and invasion in human cervical cancer cells. To further explore the molecular mechanisms of it, we reveal that OLFM4 augmentation interferes with mTOR signal pathway and the suppressive effects of OLFM4 on cell migration and invasion are largely weakened by phosphatidic acid (PA) induced mTOR signal activation, which implicates the potential role of mTOR pathway in OLFM4-related cervical metastasis...
February 14, 2019: Oncology Research
https://read.qxmd.com/read/30764900/heme-oxygenase-1-inhibits-tumor-metastasis-mediated-by-notch1-pathway-in-murine-mammary-carcinoma
#2
Qiang Li, Qi Liu, Wanpeng Cheng, Huiyan Wei, Wenqian Jiang, Fang E, Yuan Yu, Jianfeng Jin, Chaoxia Zou
Heme oxygenase-1 (HO-1) plays an important role in the progression of several malignancies including breast cancer. However, its role in breast cancer metastasis is still ambiguous. In this study, we observed the effect of HO-1 on mouse mammary carcinoma metastasis using the in vivo tumor metastasis model. Our results revealed that overexpression of HO-1 strongly inhibits the lung metastasis of 4T1 cells. In in vitro analysis, associated indices for Epithelial-mesenchymal transition (EMT), migration and proliferation of 4T1 cells were evaluated...
February 14, 2019: Oncology Research
https://read.qxmd.com/read/30764899/phf8-plays-an-oncogene-function-in-hepatocellular-carcinoma-formation
#3
Hong Ye, Qing Yang, Shujie Qi, Hairong Li
Hepatocellular carcinoma (HCC) has high morbidity and mortality rates, and the number of new cases and deaths from liver cancer are increasing. However, the details of the regulation in HCC remain largely unknown. Plant Homeodomain Finger protein 8 (PHF8) is a JmjC domain-containing protein. Recently, PHF8 was reported to participate in several types of cancer. However, the biological function and clinical significance of PHF8 in HCC remain unknown. In this study, we investigate that PHF8 role in HCC growth and metastasis...
February 14, 2019: Oncology Research
https://read.qxmd.com/read/30764896/hsa_circ_0003998-promotes-chemoresistance-via-modulation-of-mir-326-in-lung-adenocarcinoma-cells
#4
Wanjun Yu, Weidong Peng, Hanyun Sha, Jipeng Li
Circular RNAs (circRNAs) represent a new class of non-coding RNAs that is involved in the development of cancer. However, little is known about their role in chemoresistance. In the present study, we found that hsa_circ_0003998 expression levels in lung adenocarcinoma (LAD) tissues and docetaxel-resistant cell lines (A549/DTX and H1299/DTX) were upregulated. Knockdown of hsa_circ_0003998 decreased chemoresistance, inhibited proliferation, and enhanced apoptosis in docetaxel-resistant LAD cells. Moreover, by using bioinformatics and luciferase reporter assays, we found that miR-326 was a direct target of hsa_circ_0003998...
February 14, 2019: Oncology Research
https://read.qxmd.com/read/30764894/high-circ_100053-predicts-a-poor-outcome-for-chronic-myeloid-leukemia-and-is-involved-in-imatinib-resistance
#5
Lei Ping, Chen Jian-Jun, Liao Chu-Shu, Liu Guang-Hua, Zhou Ming
Chronic myeloid leukemia (CML) is a rare clonal myeloproliferative malignancy, which is caused by a reciprocal translocation between chromosomes 9 and 22 t(9;22) (q34;q11). Altered circle RNAs (circRNAs) could contribute to leukemogenesis. In this study, we aimed to investigate the expression profiling of circRNAs in CML. We performed circRNA-sequencing to identify differentially expressed circRNAs in CML cells. Furthermore, we found that circ_100053 was significantly upregulated in peripheral blood mononuclear cells (PBMC) and serum samples from CML compared with healthy controls...
February 14, 2019: Oncology Research
https://read.qxmd.com/read/30764893/the-interaction-between-lncrna-snhg1-and-mir-140-in-regulating-growth-and-tumorigenesis-via-tlr4-nf-%C3%AE%C2%BAb-pathway-in-cholangiocarcinoma
#6
Zhen Li, Xin Li, Xiao Du, Henghui Zhang, Zhengyang Wu, Kewei Ren, Xinwei Han
Cholangiocarcinoma (CCA) is the second most common primary hepatobiliary carcinoma. The long non-coding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) has been reported to contribute to the progression of multiple cancers. Nonetheless, the functions and hidden mechanism of SNHG1 remain unclear in CCA. Herein, the SNHG1 levels were boosted in CCA cell lines, and knockdown of SNHG1 repressed CCA cell proliferation and invasion in vitro. The data also demonstrated that miR-140 could act as a target of SNHG1 in CCA, and inhibited CCA cell proliferation and invasion, whereas the inhibition effects were relieved by overexpression of SNHG1...
February 14, 2019: Oncology Research
https://read.qxmd.com/read/30732676/notch3-overexpression-and-post-transcriptional-regulation-by-mir-150-were-associated-with-egfr-tki-resistance-in-lung-adenocarcinoma
#7
Youwei Zhang, Bi Chen, Yongsheng Wang, Qi Zhao, Weijun Wu, Peiying Zhang, Liyun Miao, Sanyuan Sun
Acquired resistance remains a key challenge in epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (TKI) therapy in lung adenocarcinoma (LUAD). Recent studies have shown that Notch signaling is associated with drug resistance. However, its role and possible mechanisms in EGFR-TKI resistance are not yet clear. In our study, we found that among 4 members of NOTCH1-4, only NOTCH3 was up-regulated in LUAD tissues and TKI-resistant cell line (HCC827GR6). Knockdown of NOTCH3 by siRNA significantly inhibited proliferative ability, decreased colony and sphere formation in HCC827GR6 cells...
February 7, 2019: Oncology Research
https://read.qxmd.com/read/30696521/erratum
#8
Jianlin Wang, Wenjie Song, Weiwei Shen, Xisheng Yang, Wei Sun, Sshibin Qu, Runze Shang, Ben Ma, Meng Pu, Kaishan Tao, Kefeng Dou, Haimin Li
MicroRNA-200a (miR-200a) is frequently downregulated in most cancer types and plays an important role in carcinogenesis and cancer progression. In this study, we determined that miR-200a was downregulated in hepatocellular carcinoma (HCC) tissues and cell lines, consistent with the results of our previous study. Because a previous study suggested that downregulation of miR-200a is correlated with HCC metastasis, we aimed to elucidate the mechanism underlying the role of miR-200a in metastasis in HCC. Here we observed that overexpression of miR-200a resulted in suppression of HCC metastatic ability, including HCC cell migration, invasion, and metastasis, in vitro and in vivo...
February 5, 2019: Oncology Research
https://read.qxmd.com/read/29471895/etv6-flt3-fusion-is-a-novel-client-protein-of-hsp90
#9
Bui Thi Kim Ly, Hoang Thanh Chi
FMS-like tyrosine kinase-3 fragments from exon 14 to the end without any mutations or deletions have been reported to fuse to ETV6 (TEL) in a few cases of myeloid/lymphoid neoplasms with eosinophilia carrying a translocation t(12;13)(p13;q12). This fusion protein confers constitutive activation on the FLT3 fragment and induces factor-independent growth in transfected Ba/F3 cells, indicating that it is an oncoprotein. However, the mechanism controlling the stability of this oncoprotein is unknown. In this study, we focus on finding factors controlling the stability of ETV6/FLT3...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29463348/long-noncoding-rna-fgfr3-as1-promotes-hepatocellular-carcinoma-carcinogenesis-via-modulating-the-pi3k-akt-pathway
#10
Juhua Zhuang, Saifei He, Guoyu Wang, Guangdong Wang, Jing Ni, Suiliang Zhang, Ying Ye, Wei Xia
Hepatocellular carcinoma (HCC) as one of the most refractory cancers leads to high mortality worldwide. Long noncoding RNAs have been widely acknowledged as important biomarkers and therapeutic targets in HCC. In this study, we investigated the effects of long noncoding RNA FGFR3-AS1 on tumor growth and metastasis in HCC. First, we found that the expression of FGFR3-AS1 was upregulated about threefold in HCC samples and cell lines. We knocked down FGFR3-AS1 in Huh7 and Hep3B cells and found that FGFR3-AS1 knockdown significantly inhibited cell proliferation but induced apoptosis...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29444745/microrna-598-inhibits-cell-proliferation-and-invasion-of-glioblastoma-by-directly-targeting-metastasis-associated-in-colon-cancer-1-macc1
#11
Ning Wang, Yang Zhang, Huaxin Liang
The dysregulation of microRNA (miRNA) expression is closely related with tumorigenesis and tumor development in glioblastoma (GBM). In this study, we found that miRNA-598 (miR-598) expression was significantly downregulated in GBM tissues and cell lines. Restoring miR-598 expression inhibited cell proliferation and invasion in GBM. Moreover, we validated that metastasis associated in colon cancer-1 (MACC1) is a novel target of miR-598 in GBM. Restoring MACC1 expression reversed the inhibitory effects of miR-598 overexpression on GBM cells...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29426375/triptolide-inhibits-proliferation-and-migration-of-human-neuroblastoma-sh-sy5y-cells-by-upregulating-microrna-181a
#12
Jian Jiang, Xuewen Song, Jing Yang, Ke Lei, Yongan Ni, Fei Zhou, Lirong Sun
Neuroblastoma is the primary cause of cancer-related death for children 1 to 5 years of age. New therapeutic strategies and medicines are urgently needed. This study aimed to investigate the effects of triptolide (TPL), the major active component purified from Tripterygium wilfordii Hook F, on neuroblastoma SH-SY5Y cell proliferation, migration, and apoptosis, as well as underlying potential mechanisms. We found that TPL inhibited SH-SY5Y cell viability, proliferation, and migration, but induced cell apoptosis...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29422113/puerarin-inhibits-proliferation-and-induces-apoptosis-by-upregulation-of-mir-16-in-bladder-cancer-cell-line-t24
#13
Xiaoyun Liu, Shuguang Li, Yanyan Li, Bo Cheng, Bo Tan, Gang Wang
Bladder cancer (BC) is a common disease of the urinary system. Puerarin is a flavonoid extracted from Pueraria lobata. However, the role of puerarin in BC remains unclear. Hence, this study aimed to investigate the effect of puerarin on BC cells. Cell viability, proliferation, and apoptosis were measured by CCK-8, BrdU assay, and flow cytometry analysis, respectively. The expressions of miR-16, apoptosis-related factors, and the main factors of the NF-κB pathway were analyzed by qRT-PCR and Western blot. In this study, we found that cell viability and proliferation were significantly reduced, cell apoptosis was enhanced, and the mRNA level of miR-16 was upregulated in puerarin-treated T24 cells...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29402343/microrna-204-inhibits-the-growth-and-motility-of-colorectal-cancer-cells-by-downregulation-of-cxcl8
#14
Feng Shuai, Bo Wang, Shuxiao Dong
Among all of the miRNAs, miR-204 has gained considerable attention in the field of cancer research. This study aimed to reveal the detailed functions and the underlying mechanism of miR-204 in colorectal cancer (CRC) cells. The expressions of miR-204 in CRC tumor tissues and cell lines were monitored. Expressions of miR-204 and CXCL8 in Caco-2 and HT-29 cells were altered by transfection, and then cell viability, apoptosis, migration, invasion, EMT-related protein expression, and PI3K/AKT/mTOR pathway protein expression were assessed...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29391086/b7-homolog-4-promotes-epithelial-mesenchymal-transition-and-invasion-of-bladder-cancer-cells-via-activation-of-nuclear-factor-%C3%AE%C2%BAb
#15
Haoran Wu, Xugang Wang, Naixin Mo, Liang Zhang, Xiaoliang Yuan, Zhong Lü
B7-homolog 4 (B7-H4), a member of the B7 family of costimulatory molecules, has been reported to be upregulated in urothelial cell carcinoma. This study was conducted to explore the biological role of B7-H4 in the aggressiveness of bladder cancer and the associated molecular mechanism. We found that the mRNA and protein levels of B7-H4 were significantly greater in bladder cancer cell lines than in SV-HUC-1 (normal human urothelial cells). Overexpression of B7-H4 significantly promoted bladder cancer cell migration and invasion, whereas knockdown of B7-H4 exerted an opposite effect...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29386089/long-noncoding-rna-gas5-promotes-proliferation-migration-and-invasion-by-regulation-of-mir-301a-in-esophageal-cancer
#16
Wei Li, Weidong Zhao, Zhaohui Lu, Wen Zhang, Xuan Yang
Long noncoding RNA (lncRNA) growth arrest-specific transcript 5 (GAS5) has been revealed to be associated with the progression of various cancers. However, the biological roles of GAS5 in esophageal cancer (EC) remain unclear. We aimed to thoroughly explore the functions of GAS5 in EC. The results showed that GAS5 expression was increased in EC cells (ECA109, TE-1, TE-3, and EC9706) compared to SHEE cells. Knockdown of GAS5 decreased cell viability, migration, and invasion and induced apoptosis in EC9706 cells...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29386087/mir-135a-confers-resistance-to-gefitinib-in-non-small-cell-lung-cancer-cells-by-upregulation-of-rac1
#17
Tingting Zhang, Ning Wang
The EGFR tyrosine kinase inhibitor gefitinib is used in therapy for non-small cell lung cancer (NSCLC). However, the therapeutic efficacy of gefitinib is known to be impeded by mutations of EGFR. The aim of the present study was to reveal the role of miR-135a in gefitinib resistance of NSCLC cells. Human NSCLC cell lines, NCI-H1650 and NCI-H1975, were transfected with miR-135a mimic/inhibitor or miR-135a inhibitor plus pEX-RAC1 (a RAC1-expressing vector). The effects of miR-135a and RAC1 expression on cell viability, apoptosis, migration, and invasion were then detected...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29321083/microrna-338-3p-suppresses-proliferation-of-human-liver-cancer-cells-by-targeting-sphk2
#18
Geqiong Xiao, Qiong Wang, Bo Li, Xiaohui Wu, Hui Liao, Yili Ren, Ning Ai
Recent studies have revealed abnormal expression of miRNAs in various tumors. Although microRNA-338-3p (miR-338-3p) plays an important role in many types of tumors, its influence on liver cancer (LC) is unknown. In this study, we found that expression of miR-338-3p was decreased in LC cells and tissues. Colony formation and cell proliferation were suppressed by enhanced expression of miR-338-3p in LC cells. Moreover, miR-338-3p targeted sphingosine kinase 2 (SphK2). Silencing of SphK2 had an identical influence as overexpression of miR-338-3p in LC cells...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/29301592/transglutaminase-2-promotes-migration-and-invasion-of-lung-cancer-cells
#19
Hung-Tsung Lee, Cheng-Hsieh Huang, Wuan-Chun Chen, Chi-Shan Tsai, Yu-Lin Chao, Szu-Han Liu, Jun-Hong Chen, Yi-Ying Wu, Yi-Ju Lee
Lung cancer is the leading cause of cancer deaths worldwide. Given that the major threat of cancer is metastasis, delineation of the molecular mechanism underlying it would help devise therapeutic strategies. Transglutaminase 2 (TG2), belonging to the transglutaminase superfamily, is a versatile protein with enzymatic and nonenzymatic functions. It mainly localizes inside the cell, but also appears extracellularly. Recent findings have demonstrated the involvement of TG2 in cancer development. Here we examine the role of TG2 in metastasis of lung cancer using a lung cancer cell line CL1-0, which exhibits low invasiveness, and its invasive subline CL1-5...
September 14, 2018: Oncology Research
https://read.qxmd.com/read/28915933/mir-1290-contributes-to-colorectal-cancer-cell-proliferation-by-targeting-inpp4b
#20
Qingzhu Ma, Yan Wang, Hualing Zhang, Fengqiang Wang
Colorectal cancer (CRC) is one of the most common oncological conditions worldwide, to date. MicroRNA-1290 (miR-1290) has been demonstrated to regulate its progression. We studied the role of miR-1290 in CRC progression. The gene was upregulated in CRC tissues and cells. Its overexpression promoted CRC cell proliferation analyzed by MTT assay, colony formation assay, and soft agar growth assay. In addition, miR-1290 knockdown inhibited CRC cell proliferation. We also found that miR-1290 overexpression reduced the p27 level and increased cyclin D1 at both the mRNA and protein levels, whereas miR-1290 knockdown increased p27 and reduced cyclin D1, confirming miR-1290 promoted CRC cell proliferation...
September 14, 2018: Oncology Research
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