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lncRNA pancreatic

Zhipeng Zhang, Hongxi Chen, Yebin Lu, Tiecheng Feng, Weijia Sun
This study examined the effects of long non‑coding RNA (lncRNA) BC032020 on the development of human pancreatic ductal adenocarcinoma (PDAC), and the potential molecular mechanisms responsible for these effects. The expression of BC032020 was assessed in 20 pairs of PDAC tumor tissues and adjacent normal tissues. The overexpression of BC032020 was enforced in the AsPC‑1 and PANC‑1 cells, and the effects on cell proliferation, cell cycle distribution, cell migration and apoptosis were determined. We also analyzed the functions of zinc finger protein 451 (ZNF451), which shares a gene sequence with two exons of BC032020 and a non‑coding region with another two exons, in PDAC cells...
April 2018: International Journal of Oncology
Ning Wang, Yanan Zhu, Min Xie, Lintao Wang, Feiyan Jin, Yihui Li, Qingxin Yuan, Wei De
BACKGROUND/AIMS: The main pathogenic mechanism of diabetes is a decrease in the number of islet beta cells or a decline in their function. Recent studies have shown that pancreatic long noncoding RNAs (lncRNAs) have a high degree of tissue specificity and may be involved in the maintenance of islet cells function and the development of diabetes. The aim of this study was to investigate the molecular regulatory mechanism of mouse maternal expressed gene 3 (Meg3) in insulin biosynthesis in pancreatic islets...
March 6, 2018: Cellular Physiology and Biochemistry
Libin Wang, Feng Wang, Li Na, Jingjing Yu, Liya Huang, Zhi-Qiang Meng, Zhen Chen, Hao Chen, Liu-Lu Ming, Yong-Qiang Hua
BACKGROUND: Recent study revealed that abnormal long noncoding RNAs (lncRNAs) expression are association with chemotherapy resistance of pancreatic ductal adenocarcinoma (PDAC). OBJECTIVE: The present study was aimed to investigate the effects of lncRNA AB209630 expression for gemcitabine resistance in PDAC cells. METHODS: In the study, increased expression of lncRNA AB209630 could suppress cell proliferation and cell colony formation ability in gemcitabine resistance cells of PDAC...
February 28, 2018: Cancer Biomarkers: Section A of Disease Markers
Meiting Zhang, Yi Zhao, Youli Zhang, Dawei Wang, Shuming Gu, Wen Feng, Wanxin Peng, Aihua Gong, Min Xu
Although overexpression of the long non-coding RNA (lncRNA) UCA1 has been implicated in several human cancers, its biological function in pancreatic cancer remains to be clarified. In this study, we reported that UCA1 expression was significantly increased in pancreatic cancer tissues and correlated with clinicopathological features, tumor stage, and poorer patient outcome. We further showed that UCA1 promoted cell migration and invasion of pancreatic cancer cells. Importantly, we found that UCA1 overexpression inhibited YAP phosphorylation, and increased YAP expression...
March 3, 2018: Biochimica et Biophysica Acta
Yongping Zhou, Yigang Chen, Wenzhou Ding, Zhiyuan Hua, Liying Wang, Ye Zhu, Haixin Qian, Tu Dai
This study was expected to reveal the regulatory effects of lncRNA UCA1 on pancreatic cancer cell progression through targeting miR-96/FOXO3. Microarray analysis was carried out on 36 cases of pancreatic cancer tissues and 16 cases of adjacent tissues among them. Expression levels of lncRNA UCA1, miR-96, and FOXO3 in pancreatic cancer tissues and cell lines were determined by qRT-PCR. Expression levels of FOXO3 protein were determined by western blot. Cell viability, cell cycle and apoptosis, cell invasion and migration were detected by CCK-8, flow cytometry, and transwell assay, respectively...
March 2, 2018: IUBMB Life
Jie Zhang, Xiao-Yan Li, Ping Hu, Yuan-Sheng Ding
Previous study indicates that long noncoding RNA NORAD could serve as a competing endogenous RNA to pancreatic cancer metastasis. However, its role in colorectal cancer requires to be investigated. In the present study, we found that the expression of NORAD was significantly upregulated in colorectal cancer (CRC) tissues. Furthermore, the expression of NORAD was positively related with CRC metastasis and patients' poor prognosis. Knockdown of NORAD markedly inhibited CRC cell proliferation, migration and invasion but induced cell apoptosis in vitro...
February 22, 2018: Oncology Research
Zhixia Sun, Baogang Zhang, Tingting Cui
Long non-coding RNAs (lncRNAs) have been implicated in the occurrence and progression of multiple cancers. In the present study, we investigated the role of lncRNA X inactive-specific transcript (XIST) in the development and progression of pancreatic cancer (PC). Firstly, we found that lncRNA XIST was markedly upregulated in PC tissues and PC cell lines, respectively. Overexpression of XIST significantly promoted the proliferation, migration and invasion, and suppressed cell apoptosis of BxPC-3 cells; knockdown of XIST significantly inhibited the proliferation, migration and invasion, and accelerated cell apoptosis of PANC-1 cells...
February 2, 2018: Oncology Reports
Yating Cheng, Parisa Imanirad, Indira Jutooru, Erik Hedrick, Un-Ho Jin, Aline Rodrigues Hoffman, Jeann Leal de Araujo, Benjamin Morpurgo, Andrei Golovko, Stephen Safe
Metastasis-associated lung adenocarcinoma transcript-1 (MALAT-1) is a long non-coding RNA (lncRNA) that is a negative prognostic factor for patients with pancreatic cancer and several other tumors. In this study, we show that knockdown of MALAT-1 in Panc1 and other pancreatic cancer cell lines decreases cell proliferation, survival and migration. We previously observed similar results for the lncRNAs HOTTIP and HOTAIR in Panc1 cells; however, RNAseq comparison of genes regulated by MALAT-1 shows minimal overlap with HOTTIP/HOTAIR-regulated genes...
2018: PloS One
Hao Hu, Yandong Wang, Xiangya Ding, Yuan He, Zipeng Lu, Pengfei Wu, Lei Tian, Hao Yuan, Dongfang Liu, Guodong Shi, Tianfang Xia, Jie Yin, Baobao Cai, Yi Miao, Kuirong Jiang
BACKGROUND: Long non-coding RNAs (lncRNAs) play an important role in the development and progression of various tumors, including pancreatic cancer (PC). Recent studies have shown that lncRNAs can 'act in cis' to regulate the expression of its neighboring genes. Previously, we used lncRNAs microarray to identify a novel lncRNA termed XLOC_000647 that was down-regulated in PC tissues. However, the expression and function of XLOC_000647 in PC remain unclear. METHODS: The expression of XLOC_000647 and NLRP3 in PC specimens and cell lines were detected by quantitative real-time PCR...
January 31, 2018: Molecular Cancer
Shuai Liang, Xuejun Gong, Gewen Zhang, Gengwen Huang, Yebin Lu, Yixiong Li
Long non-coding RNA (lncRNA) X-inactive specific transcript (XIST) is involved in the development and progression of many tumors. In this study, XIST was specifically upregulated in pancreatic carcinoma tissues and cell lines; a higher XIST expression was correlated to poorer clinicopathologic features. After XIST knockdown, the proliferation of PC cell lines was suppressed and cell cycle stagnated in G1 phase; XIST knockdown also reduced the protein levels of inhibitor of apoptosis-stimulating protein of p53 (iASPP) and Cyclin-dependent kinase 1 (CDK1), increased the protein level of P21, a potent CDK inhibitor...
December 26, 2017: Oncotarget
Huilin Ye, Quanbo Zhou, Shangyou Zheng, Guolin Li, Qing Lin, Liangtao Ye, Yingxue Wang, Lusheng Wei, Xiaohui Zhao, Wenzhu Li, Zhiqiang Fu, Yimin Liu, Zhihua Li, Rufu Chen
Long non-coding RNAs (lncRNAs) play a pivotal role in pathological processes. However, little information has been published regarding the underlying functions and mechanisms of lncRNAs in pancreatic ductal adenocarcinoma (PDAC). A novel lncRNA FEZF1-AS1 and its sense-cognate gene ZNF312B were found to be highly expressed in human PDAC tissues and cell lines, which is associated with disease progression and predicts clinical outcome in PDAC patients. Of note, bioinformatics analysis, luciferase assays and RNA immunoprecipitation assays indicated that FEZF1-AS1 may act as an endogenous sponge by competing for miR-107, thereby modulating the derepression of ZNF312B...
January 18, 2018: Cell Death & Disease
Ling Ma, Xiaodong Tian, Huahu Guo, Zhengkui Zhang, Chong Du, Feng Wang, Xuehai Xie, Hongqiao Gao, Yan Zhuang, Marko Kornmann, Hong Gao, Yinmo Yang
The long noncoding RNA (lncRNA) H19 has been proven to be overexpressed in human pancreatic ductal adenocarcinoma (PDAC). H19-induced PDAC cell proliferation is cell cycle-dependent by modulating E2F-1. However, the mechanism of how H19 regulates E2F-1 remains unclear. In this study, we investigated the expression of miR-675 in PDAC tumours and cells, the biological function of miR-675 in PDAC cell proliferation and the possible relationship among H19, miR-675 and E2F-1. As a transcript of the first exon of H19, the level of miR-675 was negatively correlated with H19 expression in microdissected PDAC tissues (r=-0...
2018: Journal of Cancer
Sijie Hao, Lie Yao, Jiaxin Huang, Hang He, Feng Yang, Yang Di, Chen Jin, Deliang Fu
BACKGROUND: Long noncoding RNAs have been shown to play crucial roles in cancer biology, while the long noncoding RNA landscapes of pancreatic ductal adenocarcinoma have not been completely characterized. We aimed to determine whether long noncoding RNA could serve as early diagnostic biomarkers for pancreatic ductal adenocarcinoma. METHOD: We conducted a genome-wide microarray analysis on pancreatic ductal adenocarcinoma and their adjacent noncancerous tissues from 8 Chinese patients...
January 1, 2018: Technology in Cancer Research & Treatment
Ling Ma, Feng Wang, Chong Du, Zhengkui Zhang, Huahu Guo, Xuehai Xie, Hongqiao Gao, Yan Zhuang, Marko Kornmann, Hong Gao, Xiaodong Tian, Yinmo Yang
Long non-coding RNA (lncRNA) MEG3 has been demonstrated to be a tumour suppressor in many malignancies. However, the functional role of MEG3 in pancreatic cancer (PC) is unclear. In this study, the expression pattern of MEG3 was evaluated in 25 samples of microdissected PC tissues and 8 PC cell lines and was compared to the expression in adjacent non‑cancerous tissues and a human pancreatic normal epithelial cell line. Loss of MEG3 expression was observed in both the cancerous tissues and cancer cell lines...
January 2, 2018: Oncology Reports
Yi Cai, Xiaomei Li, Peng Shen, Dong Zhang
BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is highly aggressive with poor prognosis. Long non-coding RNAs (lncRNAs), a group of non-coding RNAs, play important roles in the progression of PDAC. This study aimed to investigate the potential involvement of lncRNA CCAT2 in PDAC tumorigenesis. METHODS: Expression of CCAT2 was detected by quantitative real-time PCR (qRT-PCR) in 80 human PDAC tissues and three PDAC cell lines. The effects of CCAT2 silencing in PANC-1 cells on cell proliferation and invasion were studied using MTT assay and transwell assay, respectively...
January 3, 2018: Biological Research
Jionghuang Chen, Shaowen Wang, Shengnan Jia, Guoping Ding, Guixing Jiang, Liping Cao
Background: Pancreatic cancer is a devastating disease with a low five-year survival rate. Dendritic cells (DCs), which are the most potent antigen-presenting cells in the human body, play a pivotal role in the immune response. However, few studies have investigated the role of pancreatic cancer-derived exosomes (PEXs) in DC-meditated immune escape. The expression profiles of long noncoding RNAs (lncRNAs) and mRNAs of PEX-treated dendritic cells are unknown. Methods: We used integrated lncRNA and mRNA microarrays to determine the expression profiles of PEX-treated DCs and normal DCs derived from five healthy donors...
2018: Journal of Cancer
Yifan Lian, Chuanxing Xiao, Changsheng Yan, Dajun Chen, Qingwen Huang, Yanyun Fan, Zhaohua Li, Hongzhi Xu
Current evidence suggests that pseudogene derived lncRNAs may be important players in human cancer progression. Our previous study showed that DUXAP10 could promote cell proliferation in colorectal cancer. However, the clinical significance and potential role of DUXAP10 in human pancreatic cancer (PC) has not been uncovered. In this study, we found that DUXAP10 was overexpressed in PC tissues compared with normal tissues. DUXAP10 expression was significantly higher in patients with an advanced TNM stage and positive lymph node metastasis...
December 29, 2017: Journal of Cellular Biochemistry
Jukun Song, Qiuyan Yan, Haodeng Zhang, Xinhai Yin, Chen Zhu, Ke Zhao, Jianguo Zhu
To improve PDCA prognosis, a screening biomarker for early diagnosis of pancreatic cancer is in urgent need. Long non-coding RNA (lncRNA) expression profiles as potential cancer prognostic biomarkers play critical roles in development of tumorigenesis and metastasis of cancer. However, lncRNA signatures in predicting the survival of a patient with PDAC remain unknown. In the current study, we try to identify potential lncRNA biomarkers and their prognostic values in PDAC. LncRNAs expression profiles and corresponding clinical information for 182 cases with PDAC were acquired from The Cancer Genome Atlas (TCGA)...
December 13, 2017: Journal of Cellular Biochemistry
Feiyan Jin, Ning Wang, Yanan Zhu, Lianghui You, Lintao Wang, Wei De, Wei Tang
BACKGROUND: Evidence shows that long non-coding RNAs (lncRNAs) are involved in individual development, cell differentiation, cell cycle processes and other important life processes and are closely related to major human diseases, including diabetes. Recent studies have reported that lncRNAs are involved in β cell functions and that lncRNA Gas5 levels decreased in T2DM patients' serum. The purpose of this study was to clarify the role of lncRNA Gas5 in mouse β cell functions in vitro and in vivo...
October 23, 2017: Cellular Physiology and Biochemistry
H-Y Zhou, H Zhu, X-Y Wu, X-D Chen, Z-G Qiao, X Ling, X-M Yao, J-H Tang
OBJECTIVE: To investigate the expression level and biological function of long non-coding RNA gastric carcinoma high expressed transcript 1 (lncRNA-GHET1) in pancreatic ductal adenocarcinoma (pancreatic cancer for short), to analyze the correlation between the expression of GHET1 and clinicopathological features and to explore the role and clinical significance of GHET1 in the development and progression of pancreatic cancer. PATIENTS AND METHODS: The relative expression of GHET1 in 5 human pancreatic cancer cell lines was detected by quantitative Real-time polymerase chain reaction (qRT-PCR)...
November 2017: European Review for Medical and Pharmacological Sciences
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