101
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Luo X, Wang GH, Bian ZL, Li XW, Zhu BY, Jin CJ, Ju SQ. Long non-coding RNA CCAL/miR-149/FOXM1 axis promotes metastasis in gastric cancer. Cell Death Dis 2018; 9:993. [PMID: 30250169 PMCID: PMC6155366 DOI: 10.1038/s41419-018-0969-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/05/2018] [Accepted: 08/20/2018] [Indexed: 12/13/2022]
Abstract
Early evidence indicates that the long non-coding RNA CCAL plays a critical role in cancer progression and metastasis. However, the overall biological role and clinical significance of CCAL in gastric tumourigenesis and progression remain largely unknown. We observed that CCAL was upregulated in gastric cancer tissues and was associated with the tumour-node-metastasis stage. Functional experiments showed that CCAL promoted gastric cancer cell proliferation and metastasis in vitro and in vivo. Luciferase reporter assay indicated that CCAL directly bind to miR-149. Moreover, knockdown of CCAL significantly reduced the expression of FOXM1, a direct target of miR-149. We also showed that FOXM1 suppression by miR-149 could be partially rescued by CCAL overexpression. In addition, we identified a negative correlation between the mRNA expression of CCAL and miR-149 in gastric cancer tissues. Furthermore, we observed a negative correlation between the expression of miR-149 and FOXM1 and a positive correlation between CCAL and FOXM1 levels. These results demonstrated that the CCAL/miR-149/FOXM1 axis functions as a key regulator in gastric cancer metastasis and CCAL potentially represents a biomarker for diagnosis and potential target for therapy in the future.
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Affiliation(s)
- Xi Luo
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, No.20 Xisi Road, 226001, Nantong, Jiangsu Province, China.,Department of Clinical Laboratory, The Third People's Hospital of Nantong, No.60 Middle Qingnian Road, 226006, Nantong, Jiangsu Province, China
| | - Gui-Hua Wang
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, No.20 Xisi Road, 226001, Nantong, Jiangsu Province, China
| | - Zhao-Lian Bian
- Nantong Institute of Liver Diseases, The Third People's Hospital of Nantong, No.60 Middle Qingnian Road, 226006, Nantong, Jiangsu Province, China
| | - Xi-Wen Li
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, No.20 Xisi Road, 226001, Nantong, Jiangsu Province, China
| | - Bing-Ying Zhu
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, No.20 Xisi Road, 226001, Nantong, Jiangsu Province, China
| | - Chun-Jing Jin
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, No.20 Xisi Road, 226001, Nantong, Jiangsu Province, China
| | - Shao-Qing Ju
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, No.20 Xisi Road, 226001, Nantong, Jiangsu Province, China.
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102
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Zhao C, Zou H, Wang J, Shen J, Liu H. A Three Long Noncoding RNA-Based Signature for Oral Squamous Cell Carcinoma Prognosis Prediction. DNA Cell Biol 2018; 37:888-895. [PMID: 30234381 DOI: 10.1089/dna.2018.4317] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is one of the most common malignancies worldwide. Despite relative high 5-year survival rate, delayed diagnosis still hampers its prognosis improvement. Long noncoding RNA (lncRNA) has recently been demonstrated to involve in development of various cancers. This study aimed to identify a lncRNA-based signature by which we could accurately predict OSCC prognosis. We first downloaded the RNA sequencing datasets for OSCC from The Cancer Genome Atlas (TCGA) and divided samples into training set and validation set. Associations between lncRNAs' expression and OSCC overall survival (OS) were evaluated in training set. Further screening through Random Survival Forest (RSF) method identified a prognostic signature composed of three lncRNAs, including AC013268.5, RP11.65 L3.4, and RP11.15A1.7, and by which OSCC samples in training set could be divided into high-risk and low-risk group with significantly different OS (p < 0.001, hazard ratio [HR] = 1.873). Besides, reliability of the prognostic signature was confirmed in the validation set (p < 0.01, HR = 2.14). Receiver operating characteristic curve analysis showed the superiority of the signature in OSCC prognosis prediction than other clinical characteristics. Gene set enrichment analysis indicated that high-risk score was closely associated with metabolism and spliceosome related pathways. Our findings suggest that lncRNA should be an important biomarker for prognosis of OSCC patients.
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Affiliation(s)
- Chenguang Zhao
- 1 Department of Emergency, Tianjin Stomatological Hospital , Tianjin, China
| | - Huiru Zou
- 2 Central Laboratory of Tianjin Stomatological Hospital, The Affiliated Stomatological Hospital of Nankai University , Tianjin, China
| | - Jinhui Wang
- 1 Department of Emergency, Tianjin Stomatological Hospital , Tianjin, China
| | - Jun Shen
- 3 Department of Oral and Maxillofacial, Tianjin Stomatological Hospital , Tianjin, China
| | - Hao Liu
- 3 Department of Oral and Maxillofacial, Tianjin Stomatological Hospital , Tianjin, China
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103
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Li P, Tong L, Song Y, Sun J, Shi J, Wu Z, Diao Y, Li Y, Wang Z. Long noncoding RNA H19 participates in metformin-mediated inhibition of gastric cancer cell invasion. J Cell Physiol 2018; 234:4515-4527. [PMID: 30192003 DOI: 10.1002/jcp.27269] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 07/20/2018] [Indexed: 12/30/2022]
Abstract
Recent research suggests that the first-line oral antidiabetes drug metformin may prevent gastric cancer progression and improve prognosis. Many studies have also shown that long noncoding RNAs (lncRNAs) play important roles in many biological processes. Therefore, we aimed to explore whether lncRNAs participate in the mechanisms by which metformin affects gastric cancer cells. In the current study, we found that metformin significantly inhibited the cellular functions of gastric cancer cells through Cell Counting Kit-8 and invasion assays. We found that lncRNA H19 was greatly downregulated in gastric cancer cells treated with metformin using lncRNA microassays. Based on bioinformatics analyses of the Oncomine and The Cancer Genome Atlas databases, H19 is shown to be overexpressed in gastric cancer tissues, with increased expression of H19 relating to advanced pathological tumor stage and pathological tumor node metastasis stage, indicating that H19 may be associated with the invasive ability of gastric cancer. We knocked down H19 in AGS and SGC7901 cell lines and found that knocked-down H19 could decrease gastric cancer cell invasion and that metformin could not further decrease invasion after the knock down. Moreover, H19 depletion increased AMPK activation and decreased MMP9 expression, and metformin could not further activate AMPK or decrease MMP9 in H19 knocked-down gastric cancer cells. In summary, metformin has a profound antitumor effect on gastric cancer cells, and H19 is a key component in the process of metformin suppressing gastric cancer cell invasion.
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Affiliation(s)
- Peiwen Li
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Linhao Tong
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Yongxi Song
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Jingxu Sun
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Jinxin Shi
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Zhonghua Wu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Yao Diao
- Department of Nuclear Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Yaming Li
- Department of Nuclear Medicine, The First Hospital of China Medical University, Shenyang, China
| | - Zhenning Wang
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, China
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104
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Wang XP, Song J, Liu GT, Wang JJ, Guo HF. Upregulation of gastric adenocarcinoma predictive long intergenic non-coding RNA promotes progression and predicts poor prognosis in perihilar cholangiocarcinoma. Oncol Lett 2018; 16:3964-3972. [PMID: 30128015 DOI: 10.3892/ol.2018.9137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 01/29/2018] [Indexed: 11/06/2022] Open
Abstract
Perihilar cholangiocarcinoma (PHCC) is one of the most aggressive and complex types of cancer with a poor survival. Despite advances in PHCC diagnosis and treatment, the biology of this tumor remains poorly understood. Recent studies have suggested long non-coding RNAs (lncRNAs) as crucial determinants of cancer progression. However, the role of lncRNAs in PHCC is rarely reported and the function of gastric adenocarcinoma predictive long intergenic non-coding RNA (GAPLINC) in PHCC has yet to be elucidated. The present study observed a significant upregulation of GAPLINC in PHCC cell lines and clinical specimens (P<0.05). Furthermore, by comparing clinicopathological characteristics with expression data, high GAPLINC expression was revealed to be associated with the T stage (P=0.013), N stage (P<0.001) and Tumor-Node-Metastasis stage (P<0.001) of PHCC. Furthermore, Kaplan-Meier analysis demonstrated that GAPLINC expression was associated with poor overall survival and progression-free survival rates in PHCC. Furthermore, univariate and multivariate COX regression analyses identified high GAPLINC expression as a risk factor of a poor prognosis in PHCC. GAPLINC upregulation promoted the migration and invasion of PHCC cells in Transwell and Matrigel assays, respectively, while GAPLINC deficiency inhibited PHCC cell metastasis. Furthermore, PHCC cells with GAPLINC overexpression exhibited markedly increased proliferation ability in a Cell Counting kit-8 assay. However, GAPLINC interference significantly suppressed cell proliferation. In conclusion, GAPLINC may promote PHCC progression and may serve as a potential prognostic marker and therapeutic target of PHCC.
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Affiliation(s)
- Xin-Ping Wang
- Department of General Surgery, Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Jing Song
- Department of Urology, Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Gui-Ting Liu
- Department of Thoracic Surgery, Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Jian-Jun Wang
- Department of General Surgery, Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Hai-Feng Guo
- Department of General Surgery, Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, Heilongjiang 157011, P.R. China
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105
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Gao S, Zhao ZY, Wu R, Zhang Y, Zhang ZY. Prognostic value of long noncoding RNAs in gastric cancer: a meta-analysis. Onco Targets Ther 2018; 11:4877-4891. [PMID: 30147339 PMCID: PMC6098423 DOI: 10.2147/ott.s169823] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background In the last few years, accumulating evidence has indicated that numerous long noncoding RNAs (lncRNAs) are abnormally expressed in gastric cancer (GC) and are associated with the survival of GC patients. This study aimed to conduct a meta-analysis on 19 lncRNAs (AFAP1 antisense RNA 1 [AFAP1-AS1], CDKN2B antisense RNA 1 [ANRIL], cancer susceptibility 15 [CASC15], colon cancer associated transcript 2 [CCAT2], gastric adenocarcinoma associated, positive CD44 regulator, long intergenic noncoding RNA [GAPLINC], H19, imprinted maternally expressed transcript [H19], HOX transcript antisense RNA [HOTAIR], HOXA distal transcript antisense RNA [HOTTIP], long intergenic non-protein coding RNA 673 [LINC00673], metastasis-associated lung adenocarcinoma transcript 1 [MALAT1], maternally expressed 3 [MEG3], promoter of CDKN1A antisense DNA damage activated RNA [PANDAR], Pvt1 oncogene [PVT1], SOX2 overlapping transcript [Sox2ot], SPRY4 intronic transcript 1 [SPRY4-IT1], urothelial cancer associated 1 [UCA1], X inactive specific transcript [XIST], ZEB1 antisense RNA 1 [ZEB1-AS1] and ZNFX1 antisense RNA 1 [ZFAS1]) to systematically estimate their prognostic value in GC. Methods The qualified literature was systematically searched in PubMed, Web of Science, Embase and Cochrane Database of Systematic Reviews (up to March 16, 2018), and one meta-analysis relating to the relationship between lncRNA expression and overall survival (OS) of GC patients was performed. The only evaluation criterion of survival results was OS. Results A total of 6,095 GC patients and 19 lncRNAs from 51 articles were included in the present study. Among the listed 19 lncRNAs, 18 lncRNAs (other than SPRY4-IT1) showed a significantly prognostic value (P<0.05). Conclusion This meta-analysis suggested that the abnormally expressed lncRNAs (AFAP1-AS1, ANRIL, CASC15, CCAT2, GAPLINC, H19, HOTAIR, HOTTIP, LINC00673, MALAT1, MEG3, PANDAR, PVT1, Sox2ot, UCA1, XIST, ZEB1-AS1 and ZFAS1) were significantly associated with the survival of GC patients, among which AFAP1-AS1, CCAT2, LINC00673, PANDAR, PVT1, Sox2ot, ZEB1-AS1 and ZFAS1 were strong candidates in predicting the prognosis of GC patients.
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Affiliation(s)
- Song Gao
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
| | - Zhi-Ying Zhao
- Division of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Rong Wu
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
| | - Yue Zhang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, People's Republic of China,
| | - Zhen-Yong Zhang
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
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106
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Wu L, Yin JH, Guan YY, Liu HL, Shen HL, Wang XJ, Han BH, Zhou MW, Gu XD. A long noncoding RNA MAP3K1-2 promotes proliferation and invasion in gastric cancer. Onco Targets Ther 2018; 11:4631-4639. [PMID: 30122954 PMCID: PMC6086095 DOI: 10.2147/ott.s168819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Long noncoding RNAs (lncRNAs) have been implicated in several human cancers. The expression profile and underlying mechanism of the lncRNA MAP3K1-2 in gastric cancer (GC) are poorly understood. Methods Sixty-one patients with GC were recruited from Shanghai Baoshan Luo Dian Hospital (Shanghai, China). Tumor tissues and paired normal tissues (5 cm adjacent to the tumor) were obtained. Expression of lncRNA MAP3K1-2 in GC cell lines was examined using quantitative real-time polymerase chain reaction. Protein expression was detected using Western blot. Cell cycle analysis was assessed using flow cytometry. Cell proliferation was assessed using soft agar assays, and cell invasion was assessed using Transwell assays. Results The expression level of lncRNA MAP3K1-2 was upregulated in GC cells and markedly higher in poorly differentiated cell lines. Silencing treatment of lncRNA MAP3K1-2 significantly inhibited cell proliferation and invasion in GC. In addition, knockdown of lncRNA MAP3K1-2 significantly inhibited the function of important genes in the MAPK signaling pathway. Higher expression of lncRNA MAP3K1-2 was often associated with poorer prognosis in patients with GC. Conclusions lncRNA MAP3K1-2 is a critical effector in GC tumorigenesis and progression, representing novel therapeutic targets. High lncRNA MAP3K1-2 expression may serve as a novel independent prognostic marker for predicting the outcome of GC.
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Affiliation(s)
- Lei Wu
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Jia-Huan Yin
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Yu-Yu Guan
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Hai-Long Liu
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Hai-Long Shen
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Xiao-Jie Wang
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Bao-Hua Han
- Department of General Surgery, Shanghai Baoshan Luo Dian Hospital, Shanghai 201908, China
| | - Min-Wei Zhou
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China, ;
| | - Xiao-Dong Gu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China, ;
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107
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Wang X, Mo FM, Bo H, Xiao L, Chen GY, Zeng PW, Huang YN, Lei Z, Yuan WJ, Chen ZH. Upregulated Expression of Long Non-Coding RNA, LINC00460, Suppresses Proliferation of Colorectal Cancer. J Cancer 2018; 9:2834-2843. [PMID: 30123352 PMCID: PMC6096368 DOI: 10.7150/jca.26046] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/30/2018] [Indexed: 12/23/2022] Open
Abstract
Through bioinformatics analysis, a novel lncRNA, LINC00460, was implicated in the development of multiple cancers. However, the precise expression pattern, clinical significance and biological function of LINC00460 in colorectal cancer (CRC) remain unknown. Network databases were used to investigate the correlation between LINC00460 and CRC. In situ hybridization was performed to verify the precise expression pattern and clinical significance of LINC00460 in a CRC tissue microarray, which included 92 pairs of CRC and adjacent normal tissues. The effect of LINC00460 on proliferation was evaluated by MTT, colony formation assays and flow cytometry employing SW620 and HCT116 cell lines. Cell migration and matrigel invasion assays were performed to investigate whether LINC00460 is involved in the metastasis of CRC. The expression of LINC00460 was significantly upregulated in CRC tissues and cells, associated with early stage CRC and low disease-free survival. The downregulated of LINC00460 expression increased cell proliferation by regulating the cell cycles of SW620 and HCT116 cells. LINC00460 knockdown did not affect cell migration or invasion in vitro. These findings suggest that LINC00460 may be an interesting target for the development of CRC.
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Affiliation(s)
- Xin Wang
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Fong-Ming Mo
- Key Laboratory of Nanobiological Technology of National Health and Family Planning Commission, Xiangya Hospital , Central South University, Changsha, China
| | - Hao Bo
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medicine, Central South University, Changsha, China
| | - Lei Xiao
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Guan-Yang Chen
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Peng-Wei Zeng
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Yan-Ning Huang
- Key Laboratory of Nanobiological Technology of National Health and Family Planning Commission, Xiangya Hospital , Central South University, Changsha, China
| | - Zhuo Lei
- Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha, China
| | - Wei-Jie Yuan
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Zi-Hua Chen
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
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108
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Luo T, Zhao J, Lu Z, Bi J, Pang T, Cui H, Yang B, Li W, Wang Y, Wu S, Xue X. Characterization of long non-coding RNAs and MEF2C-AS1 identified as a novel biomarker in diffuse gastric cancer. Transl Oncol 2018; 11:1080-1089. [PMID: 30005210 PMCID: PMC6067087 DOI: 10.1016/j.tranon.2018.06.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 06/12/2018] [Accepted: 06/15/2018] [Indexed: 02/08/2023] Open
Abstract
Previous studies proved that long noncoding RNAs (lncRNAs) play important role in human cancer. However, the knowledge of genome scale expression of lncRNAs and their potential biological function in gastric cancer is still lacking. Next generation RNA sequencing (RNA-seq) was performed on tumor tissues and matched adjacent normal tissues of six diffuse gastric cancer (DGC) patients. Then we performed a comprehensive analysis on lncRNAs and mRNA. Fifty-eight lncRNAs were upregulated and 54 lncRNAs were downregulated in diffuse gastric cancer tissue compared with adjacent tissue. The numbers of up- and downregulated mRNAs were 306 and 161, respectively. In addition, we inferred the function of lncRNAs by construction of a co-expression network for deregulated mRNAs and lncRNAs. Co-expressed genes of MEF2C-AS1 and FENDRR were enriched to RAS and TGF-beta signaling pathway. MEF2C-AS1 and FENDRR expression were re-evaluated by Real-time Quantitative PCR in 42 DGC patients' tumor and normal tissues, and other 46 DGC patents' and 21 healthy controls' plasma. Validation data showed MEF2C-AS1 and FENDRR were significantly downregulated in tumor tissues compared with normal tissues. And decreased FENDRR are associated with aggressive tumor characteristics including more advanced stage (P = .030), poor differentiation (P = .043) and lymphatic metastasis (P = .001). The expression level MEF2C-AS1 was significantly lower in DGC patients' plasma than that in healthy controls' plasma. In gastric cancer cell lines, knock-down of MEF2C-AS1 or FENDRR reduced the protein levels of FAT3, NTN1 and LYVE1 (the co-expressed genes), which were related with gastric cancer cell proliferation and invasion by previous studies. In addition, knock-down of MEF2C-AS1 or FENDRR promoted aggressive tumor behaviors in in-vitro assays. In this study, we provide a valuable resource of lncRNAs which might play important roles in the function of oncogenes or tumor suppressors affecting the development and progression of diffuse gastric cancer.
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Affiliation(s)
- Tianhang Luo
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
| | - Jiangman Zhao
- Zhangjiang Center for Translational Medicine, Shanghai, Biotecan Diagnostics Co. Ltd, Shanghai 201204, China.
| | - Zhengmao Lu
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
| | - Jianwei Bi
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
| | - Tao Pang
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
| | - Hangtian Cui
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
| | - Biao Yang
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
| | - Wushuang Li
- Zhangjiang Center for Translational Medicine, Shanghai, Biotecan Diagnostics Co. Ltd, Shanghai 201204, China.
| | - Yu Wang
- Zhangjiang Center for Translational Medicine, Shanghai, Biotecan Diagnostics Co. Ltd, Shanghai 201204, China.
| | - Shouxin Wu
- Zhangjiang Center for Translational Medicine, Shanghai, Biotecan Diagnostics Co. Ltd, Shanghai 201204, China.
| | - Xuchao Xue
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, 200433, China.
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Zhang X, Liang W, Liu J, Zang X, Gu J, Pan L, Shi H, Fu M, Huang Z, Zhang Y, Qian H, Jiang P, Xu W. Long non-coding RNA UFC1 promotes gastric cancer progression by regulating miR-498/Lin28b. J Exp Clin Cancer Res 2018; 37:134. [PMID: 29970131 PMCID: PMC6029056 DOI: 10.1186/s13046-018-0803-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 06/19/2018] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) have emerged as important regulators of human cancers. However, the functional roles of lncRNAs and the mechanisms responsible for their aberrant expression in gastric cancer (GC) have not been well characterized. METHODS In this study, we examined the expression of lncRNA UFC1 in GC by qRT-PCR and explored its correlation with clinicopathological parameters. In vitro cell functional assays and in vivo animal studies were performed to determine the roles of UFC1 in GC progression. RESULTS UFC1 was elevated and predicted poorer prognosis in GC. UFC1 knockdown inhibited while UFC1 overexpression promoted GC cell proliferation, migration, and invasion. UFC1 bound to miR-498 to antagonize its tumor suppressive effect on Lin28b. Suppression of Lin28b by miR-498 could be rescued by UFC1 overexpression, whereas Lin28b overexpression partially rescued UFC1 knockdown-mediated inhibition of GC cell function. Lin28b expression was increased in GC and suggested a co-expression pattern with UFC1. CONCLUSIONS UFC1 has a promoting role in GC progression, at least in part, by acting as a miR-498 sponge and derepressing Lin28b expression, which would provide a novel biomarker for GC diagnosis and prognosis and offer a potential target for GC therapy.
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Affiliation(s)
- Xu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Wei Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Jibin Liu
- Tumor Institute, Nantong Tumor Hospital, 30 Tongyang North Road, Nantong, 226361 Jiangsu China
| | - Xueyan Zang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Jianmei Gu
- Tumor Institute, Nantong Tumor Hospital, 30 Tongyang North Road, Nantong, 226361 Jiangsu China
| | - Lei Pan
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Hui Shi
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Min Fu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Zhenhua Huang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Yu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Pengcheng Jiang
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013 Jiangsu China
- Institute of Digestive Diseases of Jiangsu University, The Affiliated People’s Hospital of Jiangsu University, 8 Dianli Road, Zhenjiang, 212002 Jiangsu China
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Integrative Analysis of Dysregulated lncRNA-Associated ceRNA Network Reveals Functional lncRNAs in Gastric Cancer. Genes (Basel) 2018; 9:genes9060303. [PMID: 29912172 PMCID: PMC6027299 DOI: 10.3390/genes9060303] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/28/2018] [Accepted: 06/12/2018] [Indexed: 01/05/2023] Open
Abstract
Mounting evidence suggests that long noncoding RNAs (lncRNAs) play important roles in the regulation of gene expression by acting as competing endogenous RNA (ceRNA). However, the regulatory mechanisms of lncRNA as ceRNA in gastric cancer (GC) are not fully understood. Here, we first constructed a dysregulated lncRNA-associated ceRNA network by integrating analysis of gene expression profiles of lncRNAs, microRNAs (miRNAs), and messenger RNAs (mRNAs). Then, we determined three lncRNAs (RP5-1120P11, DLEU2, and DDX11-AS1) as hub lncRNAs, in which associated ceRNA subnetworks were involved in cell cycle-related processes and cancer-related pathways. Furthermore, we confirmed that the two lncRNAs (DLEU2 and DDX11-AS1) were significantly upregulated in GC tissues, promote GC cell proliferation, and negatively regulate miRNA expression, respectively. The hub lncRNAs (DLEU2 and DDX11-AS1) could have oncogenic functions, and act as potential ceRNAs to sponge miRNA. Our findings not only provide novel insights on ceRNA regulation in GC, but can also provide opportunities for the functional characterization of lncRNAs in future studies.
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111
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Pang K, Ran MJ, Zou FW, Yang TW, He F. Long non-coding RNA LINC00857 promotes gastric cancer cell proliferation and predicts poor patient survival. Oncol Lett 2018; 16:2119-2124. [PMID: 30008909 PMCID: PMC6036341 DOI: 10.3892/ol.2018.8883] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 01/12/2018] [Indexed: 01/09/2023] Open
Abstract
Gastric cancer (GC) is a common malignancy worldwide and its pathogenesis remains unclear. Long non-coding RNAs (lncRNAs) serve an important function in cancer development, therefore identification of functional lncRNAs in GC is required. The results of the present study demonstrate that an lncRNA, LINC00857, was increased in GC tissues compared with adjacent non-tumor tissues. Overexpression of LINC00857 was positively associated with poor survival rate, as well as with the tumor size of patients with GC. LINC00857 knockdown induced by specific small interfering RNAs significantly inhibited GC cell proliferation in vitro. Genome-wide analysis revealed that LINC00857 knockdown deregulated the cell cycle. Western blot analysis confirmed that LINC00857 knockdown decreased protein expression of cyclin D1 and cyclin E1 in GC cells. Taken together, the results indicated that LINC00857 knockdown suppressed GC cell proliferation through deregulating the cell cycle, resulting in the downregulation of cyclin D1 and cyclin E1. Therefore, LINC00857 expression may be an independent biomarker for the diagnosis and prognosis of GC.
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Affiliation(s)
- Ke Pang
- Department of Geriatrics, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
| | - Mao-Juan Ran
- Department of Geriatrics, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
| | - Fan-Wen Zou
- Department of Geriatrics, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
| | - Tian-Wen Yang
- Department of Geriatrics, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
| | - Fei He
- Department of Geriatrics, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
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112
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Yin D, Lu X, Su J, He X, De W, Yang J, Li W, Han L, Zhang E. Long noncoding RNA AFAP1-AS1 predicts a poor prognosis and regulates non-small cell lung cancer cell proliferation by epigenetically repressing p21 expression. Mol Cancer 2018; 17:92. [PMID: 29793547 PMCID: PMC5968553 DOI: 10.1186/s12943-018-0836-7] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/18/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Mounting evidence indicates that long noncoding RNAs (lncRNAs) could play a pivotal role in cancer biology. However, the role and molecular mechanism and global genes that were mediated by lncRNA AFAP1-AS1 in non-small cell lung cancer (NSCLC) remain largely unknown. METHODS Expression of AFAP1-AS1 was analyzed in 92 NSCLC tissues and cell lines by Quantitative real time polymerase chain reaction (qRT-PCR). The effect of AFAP1-AS1 on proliferation was evaluated by function assays both in in vitro and in vivo. RNA-seq assays were performed after knockdown AFAP1-AS1. RNA immunoprecipitation (RIP) was performed to confirm the interaction between AFAP1-AS1 and EZH2. Chromatin immunoprecipitation (ChIP) was used to study the promoter region of p21. RESULTS AFAP1-AS1 expression was increased in NSCLC tissues and was correlated with clinical outcomes of NSCLC. Further experiments revealed that inhibition of its expression in NSCLC cells resulted in diminished cell growth in vitro and in vivo. RNA-seq revealed that knockdown of AFAP1-AS1 could induce the expression of p21. Mechanistic investigations found that AFAP1-AS1 could interact with EZH2 and recruit EZH2 to the promoter regions of p21, thus epigenetically repressing p21 expression. CONCLUSIONS Together, these results suggest that lncRNA AFAP1-AS1 may serve as a candidate prognostic biomarker and target for new therapies in human NSCLC.
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Affiliation(s)
- Dandan Yin
- Cancer Research and Biotherapy Center, the Second Affiliated Hospital of Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Xiyi Lu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Jun Su
- Department of Oncology, the Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Xuezhi He
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Wei De
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Jinsong Yang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.
| | - Wei Li
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.
| | - Liang Han
- Department of Oncology, Xuzhou Central Hospital, Affiliated Xuzhou Hospital, College of Medicine, Southeast University, Xuzhou, Jiangsu, People's Republic of China.
| | - Erbao Zhang
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, People's Republic of China.
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113
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Chen Z, Ju H, Yu S, Zhao T, Jing X, Li P, Jia J, Li N, Tan B, Li Y. Prader-Willi region non-protein coding RNA 1 suppressed gastric cancer growth as a competing endogenous RNA of miR-425-5p. Clin Sci (Lond) 2018; 132:1003-1019. [PMID: 29535266 DOI: 10.1042/cs20171588] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/12/2018] [Accepted: 03/12/2018] [Indexed: 12/22/2022]
Abstract
Gastric cancer (GC) is one of the major global health problems, especially in Asia. Nowadays, long non-coding RNA (lncRNA) has gained significant attention in the current research climate such as carcinogenesis. This research desires to explore the mechanism of Prader-Willi region non-protein coding RNA 1 (PWRN1) on regulating GC process. Differentially expressed lncRNAs in GC tissues were screened out through microarray analysis. The RNA and protein expression level were detected by quantitative real-time PCR (qRT-PCR) and Western blot. Cell proliferation, apoptosis rate, metastasis abilities were respectively determined by cell counting kit 8 (CCK8), flow cytometry, wound healing, and transwell assay. The luciferase reporter system was used to verify the targetting relationships between PWRN1, miR-425-5p, and phosphatase and tensin homolog (PTEN). RNA-binding protein immunoprecipitation (RIP) assay was performed to prove whether PWRN1 acted as a competitive endogenous RNA (ceRNA) of miR-425-5p Tumor xenograft model and immunohistochemistry (IHC) were developed to study the influence of PWRN1 on tumor growth in vivo Microarray analysis determined that PWRN1 was differently expressed between GC tissues and adjacent tissues. qRT-PCR revealed PWRN1 low expression in GC tissues and cells. Up-regulated PWRN1 could reduce proliferation and metastasis and increase apoptosis in GC cells, while miR-425-5p had reverse effects. The RIP assay indicated that PWRN1 may target an oncogene, miR-425-5p The tumor xenograft assay found that up-regulated PWRN1 suppressed the tumor growth. The bioinformatics analysis, luciferase assay, and Western blot indicated that PWRN1 affected PTEN/Akt/MDM2/p53 axis via suppressing miR-425-5p Our findings suggested that PWRN1 functioned as a ceRNA targetting miR-425-5p and suppressed GC development via p53 signaling pathway.
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Affiliation(s)
- Zihao Chen
- Graduate School of Hebei Medical University, Shijiazhuang 050017, Hebei, China
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, China
| | - Hongping Ju
- School of Medicine, Kunming University, Kunming 650214, Yunnan, China
- The Respiratory System Disease Prevention and Control of Public Service Platform of Science and Technology in Yunnan Province, Yunnan, Kunming, 650214, China
| | - Shan Yu
- School of Medicine, Kunming University, Kunming 650214, Yunnan, China
| | - Ting Zhao
- Graduate School of Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Xiaojie Jing
- Department of Medicine, The People's Hospital of Economic and Technological Development Zone, Kunming 650217, Yunnan, China
| | - Ping Li
- School of Medicine, Kunming University, Kunming 650214, Yunnan, China
| | - Jing Jia
- School of Medicine, Kunming University, Kunming 650214, Yunnan, China
| | - Nan Li
- School of Medicine, Kunming University, Kunming 650214, Yunnan, China
| | - Bibo Tan
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, China
| | - Yong Li
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, China
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114
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Upregulation of the long noncoding RNA FOXD2-AS1 promotes carcinogenesis by epigenetically silencing EphB3 through EZH2 and LSD1, and predicts poor prognosis in gastric cancer. Oncogene 2018; 37:5020-5036. [PMID: 29789713 DOI: 10.1038/s41388-018-0308-y] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 03/27/2018] [Accepted: 04/18/2018] [Indexed: 01/21/2023]
Abstract
Accumulating data indicate that long noncoding RNAs (lncRNAs) serve as important modulators in biological processes and are dysregulated in diverse tumors. The function of FOXD2-AS1 in gastric cancer (GC) progression and related biological mechanisms remain undefined. A comprehensive analysis identified that FOXD2-AS1 enrichment was upregulated markedly in GC and positively correlated with a large tumor size, a later pathologic stage, and a poor prognosis. Gene-set enrichment analysis (GSEA) in GEO datasets uncovered that cell cycle and DNA replication associated genes were enriched in patients with high FOXD2-AS1 expression. Loss of FOXD2-AS1 function inhibited cell growth via inhibiting the cell cycle in GC, whereas upregulation of FOXD2-AS1 expression promoted cancer progression. The enhancer of zeste homolog 2 (EZH2) and lysine (K)-specific demethylase 1A (LSD1) proteins were found to serve as binding partners of FOXD2-AS1 and mediators of FOXD2-AS1 function. Mechanically, FOXD2-AS1 promoted GC tumorigenesis partly through EZH2 and LSD1 mediated EphB3 downregulation. The present results revealed that FOXD2-AS1 acted as a tumor inducer in GC partly through EphB3 inhibition by direct interaction with EZH2 and LSD1, and may prove to be a potential biomarker of carcinogenesis.
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115
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Vaziri F, Tarashi S, Fateh A, Siadat SD. New insights of Helicobacter pylori host-pathogen interactions: The triangle of virulence factors, epigenetic modifications and non-coding RNAs. World J Clin Cases 2018; 6:64-73. [PMID: 29774218 PMCID: PMC5955730 DOI: 10.12998/wjcc.v6.i5.64] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 02/09/2018] [Accepted: 03/07/2018] [Indexed: 02/05/2023] Open
Abstract
Helicobacter pylori (H. pylori) is a model organism for understanding host-pathogen interactions and infection-mediated carcinogenesis. Gastric cancer and H. pylori colonization indicates the strong correlation. The progression and exacerbation of H. pylori infection are influenced by some factors of pathogen and host. Several virulence factors involved in the proper adherence and attenuation of immune defense to contribute the risk of emerging gastric cancer, therefore analysis of them is very important. H. pylori also modulates inflammatory and autophagy process to intensify its pathogenicity. From the host regard, different genetic factors particularly affect the development of gastric cancer. Indeed, epigenetic modifications, MicroRNA and long non-coding RNA received more attention. Generally, various factors related to pathogen and host that modulate gastric cancer development in response to H. pylori need more attention due to develop an efficacious therapeutic intervention. Therefore, this paper will present a brief overview of host-pathogen interaction especially emphases on bacterial virulence factors, interruption of host cellular signaling, the role of epigenetic modifications and non-coding RNAs.
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Affiliation(s)
- Farzam Vaziri
- Microbiology Research Center, Pasteur Institute of Iran, Tehran 1316943551, Iran
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran 1316943551, Iran
| | - Samira Tarashi
- Microbiology Research Center, Pasteur Institute of Iran, Tehran 1316943551, Iran
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran 1316943551, Iran
| | - Abolfazl Fateh
- Microbiology Research Center, Pasteur Institute of Iran, Tehran 1316943551, Iran
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran 1316943551, Iran
| | - Seyed Davar Siadat
- Microbiology Research Center, Pasteur Institute of Iran, Tehran 1316943551, Iran
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran 1316943551, Iran
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116
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Li D, Yang M, Liao A, Zeng B, Liu D, Yao Y, Hu G, Chen X, Feng Z, Du Y, Zhou Y, He J, Nie Y. Linc00483 as ceRNA regulates proliferation and apoptosis through activating MAPKs in gastric cancer. J Cell Mol Med 2018; 22:3875-3886. [PMID: 29761936 PMCID: PMC6050491 DOI: 10.1111/jcmm.13661] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 03/28/2018] [Indexed: 12/20/2022] Open
Abstract
Long non‐coding RNAs (lncRNAs) are important regulators of many cellular processes, and their aberrant expression and/or function is associated with many different diseases, including cancer. However, the identification of functional lncRNAs in gastric cancer is still a challenge. In this study, we describe a novel functional lncRNA, linc00483, that is upregulated and associated with tumorigenesis, tumour size, metastasis and poor prognosis in gastric cancer. In our study, linc00483 promoted gastric cancer cell proliferation, invasiveness and metastasis in vitro and in vivo. Mechanistically, upregulated expression of linc00483 in gastric cancer acts as a sponge to absorb endogenous tumour suppressor miR‐30a‐3p. Furthermore, it restores SPAG9 expression, which is negatively regulated by miR‐30a‐3p, and actives MAPK signaling pathway in gastric cancer cells. Thus, linc00483 is an oncogenic lncRNA in gastric cancer and targeting linc00483 or its pathway can potentially be useful in development of targeted therapies for patients with gastric cancer. Our results show that linc00483 is an important regulator in carcinogenesis and may be a useful biomarker to predict prognosis of gastric cancer patients. We believe our findings are novel and will be of interest to scientists working in many areas related to biomarkers in cancer.
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Affiliation(s)
- Defeng Li
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China.,Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Meifeng Yang
- Department of Hematology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Aijun Liao
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Bing Zeng
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Diqun Liu
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Yuhong Yao
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Guangsheng Hu
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Xuanmin Chen
- Department of Gastroenterology, The First Affiliated Hospital of South China of University, South China of University, Hengyang, China
| | - Zhiqiang Feng
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Yanlei Du
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Youlian Zhou
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Jie He
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
| | - Yuqiang Nie
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Key Laboratory of Digestive Disease, Guangzhou First People's Hospital, Guangzhou, China.,Department of Gastroenterology, The Second Affiliated Hospital, Medical School, South China University of Technology, Guangzhou, China
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117
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Diao L, Wang S, Sun Z. Long noncoding RNA GAPLINC promotes gastric cancer cell proliferation by acting as a molecular sponge of miR-378 to modulate MAPK1 expression. Onco Targets Ther 2018; 11:2797-2804. [PMID: 29785127 PMCID: PMC5957056 DOI: 10.2147/ott.s165147] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Dysregulated long noncoding RNAs (lncRNAs) and microRNAs (miRNAs) play key roles in the development of human cancers. LncRNA GAPLINC has been reported to be increased in gastric cancer (GC) tissues. Methods Real-time PCR assays were used to measure expressions of GAPLINC, miR-378, and MAPK1 mRNA. Western blot assays were employed to examine MAPK1 protein expression. Cell proliferation and cell cycle were measured by CCK-8 and propidium iodide-detection assays, respectively. The interaction between GAPLINC and miR-378 was confirmed by site-directed mutagenesis and luciferase assays. Luciferase assays were also used to study whether GAPLINC was able to act as a molecular sponge of miR-378 to modulate MAPK1 expression. Results The lncRNA GAPLINC expression was upregulated and positively correlated with MAPK1 expression in gastric cancer tissues and cells. Additionally, lncRNA GAPLINC promoted the expression of MAPK1 and the enhancement of GC cell proliferation and cell cycle progression by LncRNA GAPLINC was dependent on MAPK1 in vitro and in vivo. Consequently, we found that miR-378 expression was inversely correlated with GAPLINC expression in GC tissues and cells. miR-378 could directly bind to GAPLINC and decreased GAPLINC expression, thus reducing MAPK1 expression. Furthermore, overexpression of miR-378 inhibited MAPK1 expression, cell proliferation, and cell cycle progression of gastric cancer cells, while these effects were abrogated by upregulating lncRNA GAPLINC expression. Conclusion Taken together, lncRNA GAPLINC promotes gastric cancer cell proliferation by acting as a molecular sponge of miR-378 to modulate MAPK1 expression.
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Affiliation(s)
- Lingyun Diao
- Department of Gastroenterology, The First Clinical Medical School of Nanjing University of Chinese Medicine, Nanjing, People's Republic of China.,Department of Gastroenterology, Xuzhou City Hospital of Traditional Chinese Medicine, Xuzhou, People's Republic of China
| | - Shengying Wang
- Department of Gastroenterology, Xuzhou City Hospital of Traditional Chinese Medicine, Xuzhou, People's Republic of China
| | - Zhiguang Sun
- Department of Gastroenterology, The First Clinical Medical School of Nanjing University of Chinese Medicine, Nanjing, People's Republic of China
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118
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Mo BY, Guo XH, Yang MR, Liu F, Bi X, Liu Y, Fang LK, Luo XQ, Wang J, Bellanti JA, Pan YF, Zheng SG. Long Non-Coding RNA GAPLINC Promotes Tumor-Like Biologic Behaviors of Fibroblast-Like Synoviocytes as MicroRNA Sponging in Rheumatoid Arthritis Patients. Front Immunol 2018; 9:702. [PMID: 29692777 PMCID: PMC5902673 DOI: 10.3389/fimmu.2018.00702] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 03/22/2018] [Indexed: 01/15/2023] Open
Abstract
Rapidly accumulating evidence has now suggested that the long non-coding RNAs (LncRNAs), a large and diverse class of non-coding transcribed RNA molecules with diverse functional roles and mechanisms, play a major role in the pathogenesis of many human inflammatory diseases. Although some LncRNAs are overexpressed in plasma, T cell, and synovial tissues of patients with rheumatoid arthritis (RA), there is a dearth of knowledge in what role these transcripts play in fibroblast-like synoviocytes (FLSs) of these patients. Here, our studies showed that GAPLINC, a newly identified functional LncRNA in oncology, displayed a greater degree of expression in FLSs from RA than in patients with traumatic injury. GAPLINC suppression in RA-FLS cells revealed significant alterations in cell proliferation, invasion, migration, and proinflammatory cytokines production. Additionally, we performed a preliminary bioinformatics analysis of GAPLINC gene sequence in order to find its target molecules, using miRanda, PITA, RNAhybrid algorithms, Kyoto encyclopedia of genes and genomes, and gene ontology analysis. Since the results predicted that some of microRNAs and mRNA may interact with GAPLINC, we simulated a gene co-action network model based on a competitive endogenous RNA theory. Further verification of this model demonstrated that silencing of GAPLINC increased miR-382-5p and miR-575 expression. The results of this study suggest that GAPLINC may function as a novel microRNAs sponging agent affecting the biological characteristics of RA-FLSs. Additionally, GAPLINC may also promote RA-FLS tumor-like behaviors in a miR-382-5p-dependent and miR-575-dependent manner. Based upon these findings, LncRNA GAPLINC may provide a novel valuable therapeutic target for RA patients.
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Affiliation(s)
- Bi Yao Mo
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xing Hua Guo
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Meng Ru Yang
- Department of Internal Medicine, Division of Rheumatology, The Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Fang Liu
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xuan Bi
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yan Liu
- Center for Clinic Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lin Kai Fang
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xi Qing Luo
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Julie Wang
- Department of Medicine, Division of Rheumatology, Hershey Medical Center at Penn State University, Hershey, PA, United States
| | - Joseph A Bellanti
- Department of Pediatrics and Microbiology-Immunology, Georgetown University Medical Center, Washington, DC, United States
| | - Yun Feng Pan
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Song Guo Zheng
- Department of Medicine, Division of Rheumatology, Hershey Medical Center at Penn State University, Hershey, PA, United States
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119
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Li Q, Zhang J, Zhou J, Yang B, Liu P, Cao L, Jing L, Liu H. lncRNAs are novel biomarkers for differentiating between cisplatin-resistant and cisplatin-sensitive ovarian cancer. Oncol Lett 2018; 15:8363-8370. [PMID: 29805570 PMCID: PMC5950027 DOI: 10.3892/ol.2018.8433] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 12/05/2017] [Indexed: 12/16/2022] Open
Abstract
Cisplatin-resistant ovarian cancer occurs in patients with ovarian cancer treated with cisplatin-based chemotherapy, which results in tumor progression during treatment, or recurrence of the tumor within 6 months of the treatment. It is vital that a novel biomarker for diagnosis, or an efficient therapeutic target of cisplatin-resistant ovarian is identified. Long non-coding (lnc)RNAs were determined to serve critical functions in a variety of distinct types of cancer, including ovarian cancer; however, there is limited knowledge regarding the differential expression levels of lncRNAs in cisplatin-resistant and cisplatin-sensitive ovarian cancer. Therefore, in the present study, the expression levels were determined for these cancer types. The lncRNA expression profile in cisplatin-resistant ovarian cancer was analyzed and compared with the results for cisplatin-sensitive ovarian cancer; gene ontology and pathway analysis demonstrated that the dysregulated lncRNAs participated in important biological processes. Subsequently, it was identified that these dysregulated lncRNAs were present in other ovarian cancer tissues and in SKOV3 ovarian cancer cells, as well as its cisplatin-resistant clone, SKOV3/CDDP. In addition, it was revealed that 8 lncRNAs (Enst0000435726, Enst00000585612, Enst00000566734, Enst00000453783, NR_023915, RP11_697E22.2, uc010jub.1 and tcons_00008505) were associated with cisplatin-resistant ovarian cancer. The present study may assist in improving understanding of the initiation and developmental mechanisms underlying cisplatin-resistant ovarian cancer, which could aid future studies in discovering potential biomarkers for diagnosis or therapeutic targets that may be used in clinical treatment.
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Affiliation(s)
- Qing Li
- Department of Pathology, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
| | - Juan Zhang
- Department of Pathology, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing, Jiangsu 210004, P.R. China
| | - Juan Zhou
- Department of Pathology, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
| | - Binglie Yang
- Department of Gynecology and Obstetrics, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
| | - Pingping Liu
- Department of Gynecology and Obstetrics, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
| | - Lei Cao
- Department of Pathology, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
| | - Lei Jing
- Department of Pathology, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
| | - Hua Liu
- Department of Pathology, Shanghai Pudong New Area People's Hospital, Shanghai 201299, P.R. China
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Luo Y, Ouyang J, Zhou D, Zhong S, Wen M, Ou W, Yu H, Jia L, Huang Y. Long Noncoding RNA GAPLINC Promotes Cells Migration and Invasion in Colorectal Cancer Cell by Regulating miR-34a/c-MET Signal Pathway. Dig Dis Sci 2018; 63:890-899. [PMID: 29427222 DOI: 10.1007/s10620-018-4915-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/03/2018] [Indexed: 01/17/2023]
Abstract
BACKGROUND Gastric adenocarcinoma predictive long intergenic noncoding RNA (GAPLINC) has been detected in colorectal cancer (CRC) cells and reportedly performs many functions related to tumor proliferation and metastasis. Aim The present study aimed to comprehensively explore the biological functions of GAPLINC and their underlying mechanism in CRC cell. METHODS The human cancer LncRNA PCR array was used to detect the differentially expressed long noncoding RNAs in human CRC samples. Real-time PCR, dual-luciferase assay, RNA pull-down assay, Transwell assay, and western blot analysis were performed to explore the molecular mechanism underlying GAPLINC functions related to migration and invasion of a human CRC cell line (HCT116). RESULTS Compared to the non-cancerous tissues, GAPLINC expression was obviously increased in CRC tissues. In HCT116, silencing of GAPLINC weakened cell migration and invasion, while overexpression of GAPLINC significantly promoted cell migration and invasion. Through dual-luciferase, RNA pull-down, and Transwell assays, we verified that miR-34a was the downstream molecule of GAPLINC and that miR-34a negatively regulated the migration and invasion of HCT116 cell. Furthermore, we found that GAPLINC positively regulated the miR-34a target gene c-MET in CRC tissues. CONCLUSIONS Our findings revealed that GAPLINC was up-regulated in CRC tissues and was involved in the migration and invasion of CRC cells by regulating miR-34a/c-MET signaling pathway.
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Affiliation(s)
- Yuqi Luo
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.,Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Jun Ouyang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.
| | - Donggen Zhou
- Ningbo international Travel Healthcare Center, Ningbo, 315000, China
| | - Shizhen Zhong
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Minjie Wen
- Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Wentao Ou
- Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Haitao Yu
- Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Lin Jia
- Department of Gastroenterology, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Yaoxin Huang
- Department of Gastroenterology, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
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Zhuo ZJ, Zhang R, Zhang J, Zhu J, Yang T, Zou Y, He J, Xia H. Associations between lncRNA MEG3 polymorphisms and neuroblastoma risk in Chinese children. Aging (Albany NY) 2018; 10:481-491. [PMID: 29615542 PMCID: PMC5892699 DOI: 10.18632/aging.101406] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 03/22/2018] [Indexed: 02/07/2023]
Abstract
Neuroblastoma is the third most common childhood cancer after leukemias and cancer of the central nervous system. Long noncoding RNA MEG3 polymorphisms have been shown to confer cancer susceptibility; however, their roles in the genetic predisposition to neuroblastoma remain unclarified. To answer this question, we genotyped two MEG3 polymorphisms, rs7158663 G>A and rs4081134 G>A, in 392 neuroblastoma children and 783 controls by TaqMan method. The results showed that neither single locus nor the combination analysis supported an association between MEG3 polymorphism and neuroblastoma risk. Interestingly, we found that subjects carrying rs4081134 AG/AA genotypes significantly tended to develop neuroblastoma among subgroups with age >18 month (adjusted OR=1.36, 95% CI=1.01-1.84) and clinical stage III+IV disease (adjusted OR=1.47, 95% CI=1.08-1.99), when compared with reference group. In the combined analysis of MEG3 polymorphisms, we found that carriers of 2 risk genotypes were more likely to have higher risk of developing neuroblastoma than those with 0-1 risk genotype among children more than 18 months of age (adjusted OR=1.36, 95% CI=1.01-1.84, P=0.042), and with clinical stages III+IV disease (adjusted OR=1.47, 95% CI=1.08-2.00, P=0.014). Our data suggest MEG3 as a weak-effect neuroblastoma susceptibility gene. Well-designed studies with large sample studies are needed to further validate this finding.
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Affiliation(s)
- Zhen-Jian Zhuo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong 999077, China
- Equal contribution
| | - Ruizhong Zhang
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
- Equal contribution
| | - Jiao Zhang
- Department of Pediatric Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
- Equal contribution
| | - Jinhong Zhu
- Department of Clinical Laboratory, Molecular Epidemiology Laboratory, Harbin Medical University Cancer Hospital, Harbin 150040, Heilongjiang, China
| | - Tianyou Yang
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Yan Zou
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, Guangdong, China
| | - Huimin Xia
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
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Zheng Z, Zhu D, Zhao F, Han J, Chen H, Cai Y, Xie W. Upregulated GAPLINC predicts a poor prognosis in bladder cancer patients and promotes tumor proliferation and invasion. Oncol Lett 2018; 15:6770-6776. [PMID: 29725414 DOI: 10.3892/ol.2018.8158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 01/11/2018] [Indexed: 12/11/2022] Open
Abstract
Previous studies have demonstrated that long noncoding RNAs (lncRNAs) exhibit critical regulatory roles in cancer biology. However, few lncRNAs have been well characterized in bladder cancer. In the previous study, we demonstrated that gastric adenocarcinoma associated, positive CD44 regulator, long intergenic noncoding RNA (GAPLINC) was significantly upregulated in bladder cancer tissues compared with normal tissues in The Cancer Genome Atlas (TCGA) cohort (P=0.039) and a validated cohort of 80 patients with bladder cancer (P=0.021). Statistical analysis revealed that GAPLINC expression level was associated with tumor stage in the validated cohort (P=0.017). Kaplan-Meier analysis demonstrated that patients in the high GAPLINC expression group had a worse overall survival (P=0.0386), indicating that GAPLINC may be a sensitive prognostic biomarker for patients with bladder cancer. Furthermore, knockdown of GAPLINC inhibited cell proliferation and colony formation, promoted cells cycle arrest at G1 phase and suppressed cells migration and invasion. The findings of the present study suggest that GAPLINC exhibits an oncogenic role in bladder cancer and may be a potential prognostic biomarker and therapeutic target.
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Affiliation(s)
- Zaosong Zheng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Dingjun Zhu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Fengjin Zhao
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jinli Han
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Haicheng Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Yuhong Cai
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Wenlian Xie
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
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Nasrollahzadeh-Khakiani M, Emadi-Baygi M, Schulz WA, Nikpour P. Long noncoding RNAs in gastric cancer carcinogenesis and metastasis. Brief Funct Genomics 2018; 16:129-145. [PMID: 27122631 DOI: 10.1093/bfgp/elw011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Recent studies of the human transcriptome, most prominently by the ENCyclopedia Of DNA Elements project, have revealed an unexpected number of noncoding RNAs (ncRNAs). Long noncoding RNAs (lncRNAs) are typically referred to a heterogeneous group of polyadenylated long ncRNAs, with a length of > 200 nt. LncRNAs constitute an integral part of tumor biology, with many lncRNAs discovered to be aberrantly expressed in various cancer types. They are involved in many aspects of cancer pathogenesis from its initiation to progression, metastasis and treatment response. Gastric cancer (GC) is the third leading cause of cancer death worldwide. Despite the current improvements of life expectancy and survival rate, most of the patients are diagnosed when their cancer has been progressed to advanced stages. Therefore, unraveling the molecular mechanisms of GC to find early-stage biomarkers is urgent. As the list of lncRNAs with deregulated expression in GC is steadily expanding, these molecules offer a source for developing GC-specific biomarkers. In this review, we will present and discuss those lncRNAs whose expression has been shown to be deregulated in GC.
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124
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Long noncoding RNA PANDAR blocks CDKN1A gene transcription by competitive interaction with p53 protein in gastric cancer. Cell Death Dis 2018; 9:168. [PMID: 29416011 PMCID: PMC5833854 DOI: 10.1038/s41419-017-0246-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 12/13/2022]
Abstract
Emerging evidence indicates that lncRNAs play important roles in cancer tumourigenesis and could be used as potential diagnostic biomarkers or therapeutic targets. However, the clinical significance and molecular mechanism of lncRNAs in gastric cancer (GC) is still unclear. The aim of this study was to explore the expression and role of lncRNAs in GC. The relative expression level of lncRNAs in GC samples was examined by an lncRNA microarray analysis, northern blot analysis and qRT-PCR analysis. A Kaplan−Meier survival analysis and univariate and multivariate Cox proportional hazards models were performed to evaluate the clinical and prognostic significance of PANDAR (promoter of CDKN1A antisense DNA damage activated RNA) in GC patients. The binding activity of PANDAR with the p53 protein was analysed by an RNA immunoprecipitation analysis and RNA pull-down analysis. The depletion of PANDAR was conducted using the CRISPR/Cas9 system for PANDAR. The biological functions of PANDAR in GC cells were determined both in vitro and in vivo. Upregulated PANDAR in GC patients was positively correlated with increased tumour size, advanced TNM classification and a poor survival rate in GC patients. The ROC curves identified that the PANDAR level was a marker for discriminating the early-stage tumour group from the healthy group, the metastasis group from the non-metastasis group and the chemoresistance group from the chemosensitive group in GC patients. As a target, the CDKN1A gene was successfully downregulated by PANDAR. PANDAR controlled the transcription of the CDKN1A gene by competitively binding with p53 protein. In combination with a p53 activator (nutlin3), the knockout of PANDAR by CRISPR/Cas9 technology synergistically inhibited GC tumour growth in vivo. Our results suggest that the PANDAR is a powerful diagnostic and therapeutic marker for patients with GC and, combined with other chemotherapeutics, may have distinct antitumour effects.
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125
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Jin C, Shi W, Wang F, Shen X, Qi J, Cong H, Yuan J, Shi L, Zhu B, Luo X, Zhang Y, Ju S. Long non-coding RNA HULC as a novel serum biomarker for diagnosis and prognosis prediction of gastric cancer. Oncotarget 2018; 7:51763-51772. [PMID: 27322075 PMCID: PMC5239513 DOI: 10.18632/oncotarget.10107] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/02/2016] [Indexed: 02/06/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have recently emerged as vital players in tumor biology with potential value in cancer diagnosis, prognosis, and therapeutics. The lncRNA HULC (highly up-regulated in liver cancer) is increased in many malignancies, yet its serum expression profile and clinical value in gastric cancer (GC) patients remain unclear. Quantitative real-time polymerase chain reaction (RT-qPCR) for large-scale analysis of the serum expression of HULC in GC patients reliably detected circulating HULC and revealed that it is upregulated in GC patients. A high serum HULC level correlated with tumor size, lymph node metastasis, distant metastasis, tumor-node-metastasis stage, and H. pylori infection. The area under the ROC curve for HULC was up to 0.888, which was higher than that for CEA (0.694) and CA72-4 (0.514). Follow-up detection and Kaplan-Meier curve analysis revealed HULC is a good predictor of GC prognosis. Our present study indicates that circulating HULC may represent a novel serum tumor marker for early diagnosis and monitoring progression and prognosis of GC.
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Affiliation(s)
- Chunjing Jin
- Medical School of Medicine, Nantong University, Nantong 226000, Jiangsu Province, China
| | - Wei Shi
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China
| | - Feng Wang
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China
| | - Xianjuan Shen
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China
| | - Jing Qi
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China
| | - Hui Cong
- Laboratory Medicine Center, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China
| | - Jie Yuan
- Medical School of Medicine, Nantong University, Nantong 226000, Jiangsu Province, China
| | - Linying Shi
- Medical School of Medicine, Nantong University, Nantong 226000, Jiangsu Province, China
| | - Bingying Zhu
- Medical School of Medicine, Nantong University, Nantong 226000, Jiangsu Province, China
| | - Xi Luo
- Medical School of Medicine, Nantong University, Nantong 226000, Jiangsu Province, China
| | - Yan Zhang
- Medical School of Medicine, Nantong University, Nantong 226000, Jiangsu Province, China
| | - Shaoqing Ju
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China.,Laboratory Medicine Center, Affiliated Hospital of Nantong University, Nantong 226000, Jiangsu Province, China
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Zhang E, Yin D, Han L, He X, Si X, Chen W, Xia R, Xu T, Gu D, De W, Guo R, Xu Z, Chen J. E2F1-induced upregulation of long noncoding RNA LINC00668 predicts a poor prognosis of gastric cancer and promotes cell proliferation through epigenetically silencing of CKIs. Oncotarget 2018; 7:23212-26. [PMID: 27036039 PMCID: PMC5029621 DOI: 10.18632/oncotarget.6745] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 12/12/2015] [Indexed: 12/27/2022] Open
Abstract
Recently, long noncoding RNAs (lncRNAs) have been shown to have important regulatory roles in human cancer biology. By utilizing publicly available lncRNAs expression profiling data and integrating analyses, we screened out LINC00668, whose expression is significantly increased and correlated with outcomes in gastric cancer (GC). Further experiments revealed that LINC00668 knockdown significantly repressed proliferation, both in vitro and in vivo. Mechanistic investigations showed that LINC00668 was a direct transcriptional target of E2F transcription factor 1 (E2F1). We further demonstrated that LINC00668 was associated with PRC2 and that this association was required for epigenetic repression of cyclin-dependent protein kinase inhibitors (CKIs), including p15, p16, p21, p27 and p57, thus contributing to the regulation of the gastric cancer cell cycle. Our results suggest that E2F1-activated LINC00668, as a cell cycle regulator, enriches the mechanistic link between lncRNA and the E2F1-mediated cell cycle regulation pathway and may serve as a candidate prognostic biomarker and target for new therapies in human gastric cancer.
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Affiliation(s)
- Erbao Zhang
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Dandan Yin
- Central Laboratory, the Second Affiliated Hospital of Southeast University, Nanjing, Jiangsu, PR China
| | - Liang Han
- Department of Oncology, Xuzhou Central Hospital, Affiliated Xuzhou Hospital, College of Medicine, Southeast University, Xuzhou, Jiangsu, PR China
| | - Xuezhi He
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Xinxin Si
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Wenming Chen
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Rui Xia
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Tongpeng Xu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Dongying Gu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Wei De
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Renhua Guo
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Zhi Xu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, PR China
| | - Jinfei Chen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, PR China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu, PR China
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Xu S, Wang P, You Z, Meng H, Mu G, Bai X, Zhang G, Zhang J, Pang D. The long non-coding RNA EPB41L4A-AS2 inhibits tumor proliferation and is associated with favorable prognoses in breast cancer and other solid tumors. Oncotarget 2018; 7:20704-17. [PMID: 26980733 PMCID: PMC4991486 DOI: 10.18632/oncotarget.8007] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 02/18/2016] [Indexed: 02/01/2023] Open
Abstract
EPB41L4A-AS2 is a novel long non-coding RNA of unknown function. In this study, we investigated the expression of EPB41L4A-AS2 in breast cancer tissues and evaluated its relationship with the clinicopathological features and prognosis of patients with breast cancer. This entailed conducting a meta-analysis and prognosis validation study using two cohorts from the Gene Expression Omnibus (GEO). In addition, we assessed EPB41L4A-AS2 expression and its relationship with the clinicopathological features of renal and lung cancers using the Cancer Genome Atlas cohort and a GEO dataset. We also clarified the role of EPB41L4A-AS2 expression in mediating cancer cell proliferation in breast, renal, and lung cancer cell lines transfected with an EPB41L4A-AS2 expression vector. We found that high EPB41L4A-AS2 expression is associated with favorable disease outcomes. Gene ontology enrichment analysis revealed that EPB41L4A-AS2 may be involved in processes associated with tumor biology. Finally, overexpression of EPB41L4A-AS2 inhibited tumor cell proliferation in breast, renal, and lung cancer cell lines. Our clinical and in vitro results suggest that EPB41L4A-AS2 inhibits solid tumor formation and that evaluation of this long non-coding RNA may have prognostic value in the clinical management of such malignancies.
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Affiliation(s)
- Shouping Xu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Peiyuan Wang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Zilong You
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Hongxue Meng
- Department of Pathology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Guannan Mu
- Biotherapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Xianan Bai
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Guangwen Zhang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Jinfeng Zhang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Da Pang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China.,Heilongjiang Academy of Medical Sciences, Harbin, China
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Liu Y, Xu N, Liu B, Huang Y, Zeng H, Yang Z, He Z, Guo H. Long noncoding RNA RP11-838N2.4 enhances the cytotoxic effects of temozolomide by inhibiting the functions of miR-10a in glioblastoma cell lines. Oncotarget 2018; 7:43835-43851. [PMID: 27270310 PMCID: PMC5190063 DOI: 10.18632/oncotarget.9699] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 05/06/2016] [Indexed: 01/04/2023] Open
Abstract
Resistance to temolozomide (TMZ), the standard chemotherapy agent for treating glioblastomas (GBM), is a major clinical problem for patients with GBM. Recently, long noncoding RNAs (lncRNAs) have been implicated in chemotherapy resistance in various cancers. In this study, we found that the level of the lncRNA RP11-838N2.4 was lower in TMZ-resistant GBM cells (U87TR, U251TR) compared to the parental, non-resistant GBM cells (U87, U251). In GBM patients, the decreased level of lncRNA RP11-838N2.4 correlated with higher risk of GBM relapse, as well as shorter postoperative survival times. We further found that lncRNA RP11-838N2.4 could enhances the cytotoxic effects of temozolomide to GBM cells both in vivo and in vitro. Moreover, lncRNA RP11-838N2.4 acts as an endogenous sponge, suppressing the function of miR-10a through conserved sequences and increasing the expression of EphA8 that enhanced the rate of cell apoptosis, thereby intensified sensitivity of GBM cells to TMZ. Additionally, lncRNA RP11-838N2.4 inhibited the activity of transforming growth factor-β (TGF-β) independent of miR-10a. Finally, Characterization of lncRNA RP11-838N2.4 could contribute to strategies for enhancing the efficacy of TMZ.
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Affiliation(s)
- Yanting Liu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Ningbo Xu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Boyang Liu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Yiru Huang
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Huijun Zeng
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Zhao Yang
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Zhenyan He
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Hongbo Guo
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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129
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Yang P, Chen T, Xu Z, Zhu H, Wang J, He Z. Long noncoding RNA GAPLINC promotes invasion in colorectal cancer by targeting SNAI2 through binding with PSF and NONO. Oncotarget 2018; 7:42183-42194. [PMID: 27259250 PMCID: PMC5173126 DOI: 10.18632/oncotarget.9741] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/13/2016] [Indexed: 01/13/2023] Open
Abstract
This study aimed to investigate the role of long noncoding RNAs (lncRNAs) in the metastasis of colorectal cancer (CRC). Metastasis is an important prognostic factor of CRC, and lncRNAs have been implicated in tumor proliferation and metastasis. The human CRC cell lines HCT116, HT29, SW480, DLD-1, and SW620 were used in the study. Genome-wide lncRNA expression patterns in metastatic lymph nodes compared with paired normal lymph nodes of CRC were assessed by microarray analysis. Gastric adenocarcinoma predictive long intergenic noncoding (GAPLINC) RNA was detected via functional prediction. The increased expression of GAPLINC was found to be positively correlated with larger tumor size, advanced tumor stage (T stage), advanced node stage (N stage), increased death, and shorter survival of patients with CRC by in situ hybridization analysis. Besides, the decreased expression of GAPLINC could significantly repress CRC cell invasion in vitro and also inhibit proliferation in vitro and in vivo. RNA pull-down with mass spectrum experiments revealed that PTB-associated splicing factor (PSF) and non-POU-domain-containing octamer-binding (NONO) protein bound to GAPLINC and reversed the effect of GAPLINC on cell invasion. Gene array and bioinformatics analyses identified that snail family zinc finger 2 (SNAI2) was involved in the biological processes of GAPLINC/PSF/NONO. This study indicated the importance of GAPLINC in promoting CRC invasion via binding to PSF/NONO and partly by stimulating the expression of SNAI2. Hence, GAPLINC may serve as a promising target for CRC diagnosis and therapy. The findings may help in developing a novel therapeutic strategy for patients with CRC.
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Affiliation(s)
- Peng Yang
- The Second Clinical Medical College of Nanjing Medical University, Nanjing, China
| | - Tao Chen
- The Second Clinical Medical College of Nanjing Medical University, Nanjing, China
| | - Zipeng Xu
- The Second Clinical Medical College of Nanjing Medical University, Nanjing, China
| | - Hua Zhu
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Wang
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhenyu He
- The Second Clinical Medical College of Nanjing Medical University, Nanjing, China.,Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Xie F, Ling L, van Dam H, Zhou F, Zhang L. TGF-β signaling in cancer metastasis. Acta Biochim Biophys Sin (Shanghai) 2018; 50:121-132. [PMID: 29190313 DOI: 10.1093/abbs/gmx123] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Indexed: 02/06/2023] Open
Abstract
The transforming growth factor (TGF)-β signaling events are well known to control diverse processes and numerous responses, such as cell proliferation, differentiation, apoptosis, and migration. TGF-β signaling plays context-dependent roles in cancer: in pre-malignant cells TGF-β primarily functions as a tumor suppressor, while in the later stages of cancer TGF-β signaling promotes invasion and metastasis. Recent studies have also suggested that the cross-talk between TGF-β signaling and other signaling pathways, such as Hippo, Wnt, EGFR/RAS, and PI3K/AKT pathways, may substantially contribute to our current understanding of TGF-β signaling and cancer. As a result of the wide-ranging effects of TGF-β, blockade of TGF-β and its downstream signaling components provides multiple therapeutic opportunities. Therefore, the outlook for anti-TGF-β signaling therapy for numerous diseases appears bright and will provide valuable information and thinking on the drug molecular design. In this review, we focus on recent insights into the regulation of TGF-β signaling in cancer metastasis which may contribute to the development of novel cancer-targeting therapies.
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Affiliation(s)
- Feng Xie
- Institutes of Biology and Medical Science, Soochow University, Suzhou 215123, China
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Li Ling
- Institutes of Biology and Medical Science, Soochow University, Suzhou 215123, China
| | - Hans van Dam
- Department of Molecular Cell Biology, Cancer Genomics Centre Netherlands, Leiden University Medical Center, Postbus 9600, 2300 RC Leiden, The Netherlands
| | - Fangfang Zhou
- Institutes of Biology and Medical Science, Soochow University, Suzhou 215123, China
| | - Long Zhang
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China
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132
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Zhang Y, Hu Y, Fang JY, Xu J. Gain-of-function miRNA signature by mutant p53 associates with poor cancer outcome. Oncotarget 2017; 7:11056-66. [PMID: 26840456 PMCID: PMC4905457 DOI: 10.18632/oncotarget.7090] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 01/15/2016] [Indexed: 01/05/2023] Open
Abstract
Missense mutation of p53 not only impairs its tumor suppression function, but also causes oncogenic gain of function (GOF). The molecular underpinning of mutant p53 (mutp53) GOF is not fully understood, especially for the potential roles of non-coding genes. Here we identify the microRNA expression profile (microRNAome) of mutp53 on Arg282 by controlled microarray experiments, and clarify the prognostic significance of mutp53-regulated miRNAs in cancers. A predominant repression effect on miRNA expression was found for mutant p53, with 183 significantly downregulated and only 12 upregulated miRNAs. Mutp53 and wild-type (wtp53) commonly upregulate let-7i, and other two miRNAs were upregulated by wtp53 but repressed by mutp53 (miR-610 and miR-3065–3p). Based the mutp53-regulated miRNA signature, a non-negative matrix factorization (NMF) model classified gastric cancer (GC) cases into subgroups with significantly different Disease-free survival (Kaplan-Meier test, P = 0.013). In contrast, the NMF model based on all miRNAs did not associate with cancer outcome. The mutp53 miRNA signature associated with the outcomes of breast cancer (P = 0.024) and hepatocellular cancer (P = 0.012). The miRPath analysis revealed that mutp53-suppressed miRNAs associate with Hippo, TGF-β and stem cell signaling pathways. Taken together, our results highlight a miRNA-mediated GOF mechanism of mutant p53 on Arg282, and suggest the prognostic potential of mutp53-associated miRNA signature.
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Affiliation(s)
- Yao Zhang
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai Cancer Institute, Shanghai, China
| | - Ye Hu
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai Cancer Institute, Shanghai, China.,Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jing-Yuan Fang
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai Cancer Institute, Shanghai, China
| | - Jie Xu
- State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai Cancer Institute, Shanghai, China
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133
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He H, Wang N, Yi X, Tang C, Wang D. Long non-coding RNA H19 regulates E2F1 expression by competitively sponging endogenous miR-29a-3p in clear cell renal cell carcinoma. Cell Biosci 2017; 7:65. [PMID: 29214011 PMCID: PMC5709834 DOI: 10.1186/s13578-017-0193-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/22/2017] [Indexed: 01/10/2023] Open
Abstract
Background Numerous recent studies indicate that the long non-coding RNAs (lncRNAs) are frequently abnormal expressed and take critical roles in many cancers. Renal cell carcinoma is the secondary malignant tumors in the urinary system and has high mortality and morbidity. Around 80% of RCCs is clear cell renal cell carcinoma (ccRCC) and is characterized by high metastasis and relapse rate. However, the clinical significances of lncRNAs in ccRCC are still unknown. Methods The human cancer lncRNA PCR array (Yingbio) was performed to detect the differentially expressed lncRNAs in human ccRCC samples. Real-time PCR (RT-PCR), dual-luciferase assay, RNA binding protein immunoprecipitation (RIP) assay, transwell assay, CCK-8 assay, and western blot were performed to explore the molecular mechanism of lncRNAs in ccRCC cell migration and invasion. Results In this study, lncRNA-H19 was high expressed and negatively correlated with miR-29a-3p in ccRCC. By bioinformatics software, dual-luciferase reporter and RIP assays, we verified that miR-29a-3p was identified as a direct target of lncRNA-H19. RT-PCR and western blot demonstrated that down-regulated lncRNA-H19 could affect the expression of miR-29a-3p targeting E2F1 with competitively binding miR-29a-3p. Furthermore, transwell assays indicated that lncRNA-H19 knockdown inhibited cells migration and invasion, but this effect was attenuated by co-transfection of lncRNA-H19 siRNA and miR-29a-3p inhibitor. Over expression of E2F1 could rescue lncRNA-H19 siRNA induced suppression on cell migration and invasion in ccRCC cells. Conclusions These results show a possible competing endogenous RNAs regulatory network involving lncRNA-H19 regulates E2F1 expression by competitively sponging endogenous miR-29a-3p in ccRCC. This mechanism may contribute to a better understanding of ccRCC pathogenesis, and lncRNA-H19 may be further considered as a potential therapeutic target for ccRCC intervention.
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Affiliation(s)
- Haowei He
- Department of Urology, Jinling Hospital, No.305, Zhongshan East Road, Nanjing, 210002 Jiangsu People's Republic of China
| | - Nana Wang
- Department of Anesthesiology, Jinling Hospital, Nanjing, 210002 People's Republic of China
| | - Xiaoming Yi
- Department of Urology, Jinling Hospital, No.305, Zhongshan East Road, Nanjing, 210002 Jiangsu People's Republic of China
| | - Chaopeng Tang
- Department of Urology, Jinling Hospital, No.305, Zhongshan East Road, Nanjing, 210002 Jiangsu People's Republic of China
| | - Dong Wang
- Department of Urology, Jinling Hospital, No.305, Zhongshan East Road, Nanjing, 210002 Jiangsu People's Republic of China
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Liu G, Hu X, Zhou G. Long non-coding RNA OR3A4 promotes proliferation and migration in breast cancer. Biomed Pharmacother 2017; 96:426-433. [DOI: 10.1016/j.biopha.2017.10.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/18/2017] [Accepted: 10/02/2017] [Indexed: 12/31/2022] Open
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135
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Li CX, Li HG, Huang LT, Kong YW, Chen FY, Liang JY, Yu H, Yao ZR. H19 lncRNA regulates keratinocyte differentiation by targeting miR-130b-3p. Cell Death Dis 2017; 8:e3174. [PMID: 29192645 PMCID: PMC5775403 DOI: 10.1038/cddis.2017.516] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/16/2017] [Accepted: 08/31/2017] [Indexed: 01/06/2023]
Abstract
Aberrant differentiation of keratinocytes has been demonstrated to be associated with a number of skin diseases. A growing number of studies have showed that long noncoding RNAs (lncRNAs) have an important part in gene regulation, however, the role of lncRNAs in keratinocyte differentiation remains to be largely unknown. In the present study, we demonstrated that lncRNA-H19 act as an endogenous 'sponge', which binds directly to miR-130b-3p and therefore inhibits its activity on Dsg1. MiR-130b-3p was illustrated to inhibit keratinocyte differentiation by targeting Dsg1. H19 regulates Dsg1 expression and the consequent keratinocyte differentiation through miR-130b-3p. Our study casts light on a novel regulatory model of keratinocyte differentiation, which may provide new therapeutic targets of skin diseases.
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Affiliation(s)
- Chun-Xiao Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hua-Guo Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Lin-Ting Huang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yu-Wei Kong
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Fu-Ying Chen
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jian-Yin Liang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hong Yu
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhi-Rong Yao
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Zhou H, Wang F, Chen H, Tan Q, Qiu S, Chen S, Jing W, Yu M, Liang C, Ye S, Tu J. Increased expression of long-noncoding RNA ZFAS1 is associated with epithelial-mesenchymal transition of gastric cancer. Aging (Albany NY) 2017; 8:2023-2038. [PMID: 27654478 PMCID: PMC5076450 DOI: 10.18632/aging.101048] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 09/05/2016] [Indexed: 02/07/2023]
Abstract
LncRNAs play critical roles in gastric cancer (GC). In this study, the expression of fourteen cancer related lncRNAs were investigated in paired tissues of 66 patients with GC, Realtime RT-PCR revealed that ZFAS1 was significantly upregulated. We then examined the expression of ZFAS1 in plasmas derived from 77 GC patients before- and post-operations and 60 healthy individuals, and found that circulating ZFAS1 was also upregulated in GC patients and operation can reduce its presence in plasma. To investigate the potential mechanisms, we compared the expression of ZFAS1 in multiple gastric cell lines and one normal cell line and found that ZFAS1 was up-regulated in GC cell lines. Furthermore, circulating tumor cells (CTC) were simulated by mixing GC cells with peripheral blood. After EpCAM antibody-based cell sorting, we found that the expression of ZFAS1 was positively correlated with EMT property of CTCs. In GC patient tissue samples, we found that Twist was positively correlated with ZFAS1 by immunohistochemical staining. Taken together, our results suggested that ZFAS1 was up-regulated in both tissues and plasmas of GC patients, and may be involved in regulation of EMT in GC progression. Thus, ZFAS1 might serve as a potential diagnostic marker and/or therapeutic target for GC.
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Affiliation(s)
- Hu Zhou
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Fubing Wang
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hao Chen
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Qian Tan
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Shili Qiu
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Shanshan Chen
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Wei Jing
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Mingxia Yu
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Chunzi Liang
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | | | - Jiancheng Tu
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
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Li C, Wang H, Yao H, Fang JY, Xu J. Scaffold Proteins in Gastrointestinal Tumors as a Shortcut to Oncoprotein Activation. Gastrointest Tumors 2017; 4:1-10. [PMID: 29071259 DOI: 10.1159/000477904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 05/25/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The development of cancer involves uncontrolled cell proliferation, and multiple signaling pathways that regulate cell proliferation have been found to be dysregulated in cancers. Extracellular signal-regulated protein kinase (ERK) is one of three major subtypes in the mitogen-activated protein kinase (MAPK) families. The MAPK/ERK pathway (RAS/RAF1/MEK/ERK) plays an important part in promoting cell proliferation in response to growth factors, thereby serving as a driving signal in gastrointestinal (GI) tumors. In contrast, the p53 tumor suppressor functions as a "guardian of the genome" and stops cell proliferation when oncogenic signaling is activated. SUMMARY Both pathways constrain each other in healthy GI epithelium, facilitating controlled proliferation that is essential for tissue repair and regeneration. However, in GI tumors, the MAPK/ERK and p53 pathways are commonly dysregulated, in part due to abnormal posttranslational modifications. Hyperphosphorylation of the ERK protein causes sustained activation of cell proliferation, whereas hypoacetylation of the p53 protein impairs its transcriptional function and blocks cell apoptosis. Multiple scaffold proteins have been found to regulate the posttranslational modifications of ERK and p53 proteins in GI tumors. KEY MESSAGE Abnormal expression of scaffold proteins may contribute to the dysregulation of the MAPK and p53 signaling pathways and thereby contribute to the development of GI tumors. PRACTICAL IMPLICATIONS Scaffold proteins are potential biomarkers and therapeutic targets in GI tumors.
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Affiliation(s)
- Chushu Li
- Division of Gastroenterology and Hepatology, Renji Hospital School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huanbin Wang
- Division of Gastroenterology and Hepatology, Renji Hospital School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Han Yao
- Division of Gastroenterology and Hepatology, Renji Hospital School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jing-Yuan Fang
- Division of Gastroenterology and Hepatology, Renji Hospital School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Xu
- Division of Gastroenterology and Hepatology, Renji Hospital School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Shi J, Zhang W, Tian H, Zhang Q, Men T. lncRNA ROR promotes the proliferation of renal cancer and is negatively associated with favorable prognosis. Mol Med Rep 2017; 16:9561-9566. [DOI: 10.3892/mmr.2017.7775] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 06/15/2017] [Indexed: 11/05/2022] Open
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139
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Up-regulation of lncRNA CASC9 promotes esophageal squamous cell carcinoma growth by negatively regulating PDCD4 expression through EZH2. Mol Cancer 2017; 16:150. [PMID: 28854977 PMCID: PMC5577767 DOI: 10.1186/s12943-017-0715-7] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 08/21/2017] [Indexed: 01/18/2023] Open
Abstract
Background Abnormal expression of numerous long non-coding RNAs (lncRNAs) has been reported in esophageal squamous cell carcinoma (ESCC) recently, but the great majority of their roles and mechanisms remain largely unclear. We aim to identify the critical ESCC-associated lncRNAs and elucidate the functions and mechanisms in detail. Methods Microarrays were used to analyze the differentially expressed lncRNAs in ESCC tissues. qRT-PCR was used to verify the result of microarrays. The effects of the most up-regulated lncRNA, cancer susceptibility candidate 9(CASC9), on cell growth, proliferation and cell cycle were investigated by in vivo and in vitro assays. Microarrays and recovery tests were used to discover the regulatory targets of CASC9. RNA FISH and subcellular fractionation assays were used to detect the subcellular location of CASC9. Finally, the mechanism of CASC9 regulating PDCD4 was explored by RIP, RNA-protein pull down and ChIP assays. Results ESCC tissue microarrays showed that CASC9 was the most up-regulated lncRNA. qRT-PCR analysis indicated that CASC9 expression was positively associated with tumor size and TNM stage, and predicted poor overall survival of ESCC patients. Knockdown of CASC9 inhibited ESCC cell growth in vitro and tumorigenesis in nude mice. Furthermore interfering CASC9 decreased cell proliferation and blocked cell cycle G1/S transition. CASC9-associated microarrays indicated that PDCD4 might be the target of CASC9. Consistent with this, PDCD4 expression was negatively associated with CASC9 expression in ESCC tissues and predicted good prognosis. Manipulating CASC9 expression in ESCC cells altered both PDCD4 mRNA and protein levels and cell cycle arrest caused by CASC9 knockdown could be rescued by suppressing PDCD4 expression. CASC9 located both in the nucleus and cytoplasm. Mechanistically, enhancer of zeste homolog2 (EZH2) could bind to both CASC9 and PDCD4 promoter region. Interfering CASC9 reduced the enrichment of EZH2 and H3K27me3 in the PDCD4 promoter region. Conclusions Our study firstly demonstrates that lncRNA CASC9 functions as an oncogene by negatively regulating PDCD4 expression through recruiting EZH2 and subsequently altering H3K27me3 level. Our study implicates lncRNA CASC9 as a valuable biomarker for ESCC diagnosis and prognosis. Electronic supplementary material The online version of this article (10.1186/s12943-017-0715-7) contains supplementary material, which is available to authorized users.
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Han W, Zhang Z, He B, Xu Y, Zhang J, Cao W. Integrated analysis of long non-coding RNAs in human gastric cancer: An in silico study. PLoS One 2017; 12:e0183517. [PMID: 28841672 PMCID: PMC5571953 DOI: 10.1371/journal.pone.0183517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 08/04/2017] [Indexed: 02/04/2023] Open
Abstract
Accumulating evidence highlights the important role of long non-coding RNAs (lncRNAs) in a large number of biological processes. However, the knowledge of genome scale expression of lncRNAs and their potential biological function in gastric cancer is still lacking. Using RNA-seq data from 420 gastric cancer patients in The Cancer Genome Atlas (TCGA), we identified 1,294 lncRNAs differentially expressed in gastric cancer compared with adjacent normal tissues. We also found 247 lncRNAs differentially expressed between intestinal subtype and diffuse subtype. Survival analysis revealed 33 lncRNAs independently associated with patient overall survival, of which 6 lncRNAs were validated in the internal validation set. There were 181 differentially expressed lncRNAs located in the recurrent somatic copy number alterations (SCNAs) regions and their correlations between copy number and RNA expression level were also analyzed. In addition, we inferred the function of lncRNAs by construction of a co-expression network for mRNAs and lncRNAs. Together, this study presented an integrative analysis of lncRNAs in gastric cancer and provided a valuable resource for further functional research of lncRNAs in gastric cancer.
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Affiliation(s)
- Weiwei Han
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zhenyu Zhang
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Bangshun He
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yijun Xu
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jun Zhang
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Weijun Cao
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- * E-mail:
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Zhang Y, Guan DH, Bi RX, Xie J, Yang CH, Jiang YH. Prognostic value of microRNAs in gastric cancer: a meta-analysis. Oncotarget 2017; 8:55489-55510. [PMID: 28903436 PMCID: PMC5589675 DOI: 10.18632/oncotarget.18590] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/08/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Previous articles have reported that expression levels of microRNAs (miRNAs) are associated with survival time of patients with gastric cancer (GC). A systematic review and meta-analysis was performed to study the outcome of it. DESIGN Meta-analysis. METHODS English studies estimating expression levels of miRNAs with any of survival curves in GC were identified up till March 19, 2017 through performing online searches in PubMed, EMBASE, Web of Science and Cochrane Database of Systematic Reviews by two authors independently. The pooled hazard ratios (HR) with 95% confidence intervals (CI) were used to estimate the correlation between miRNA expression and overall survival (OS). RESULTS Sixty-nine relevant articles about 26 miRNAs with 6148 patients were ultimately included. GC patients with high expression of miR-20b (HR=2.38, 95%CI=1.16-4.87), 21 (HR=1.77, 95%CI=1.01-3.08), 106b (HR=1.84, 95%CI=1.15-2.94), 196a (HR=2.66, 95%CI=1.94-3.63), 196b (HR=1.67, 95%CI=1.38-2.02), 214 (HR=1.84, 95%CI=1.27-2.67) or low expression of miR-125a (HR=2.06, 95%CI=1.26-3.37), 137 (HR=3.21, 95%CI=1.68-6.13), 141 (HR=2.47, 95%CI=1.34-4.56), 145 (HR=1.62, 95%CI=1.07-2.46), 146a (HR=2.60, 95%CI=1.63-4.13), 206 (HR=2.85, 95%CI=1.73-4.70), 218 (HR=2.61, 95%CI=1.74-3.92), 451 (HR=1.73, 95%CI=1.19-2.52), 486-5p (HR=2.45, 95%CI=1.65-3.65), 506 (HR=2.07, 95%CI=1.33-3.23) have significantly poor OS (P<0.05). CONCLUSIONS In summary, miR-20b, 21, 106b, 125a, 137, 141, 145, 146a, 196a, 196b, 206, 214, 218, 451, 486-5p and 506 demonstrate significantly prognostic value. Among them, miR-20b, 125a, 137, 141, 146a, 196a, 206, 218, 486-5p and 506 are strong biomarkers of prognosis in GC.
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Affiliation(s)
- Yue Zhang
- 1 First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan 250355, Shandong, People's Republic of China
| | - Dong-Hui Guan
- 2 Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Rong-Xiu Bi
- 2 Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Jin Xie
- 2 Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Chuan-Hua Yang
- 3 Department of Cardiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Yue-Hua Jiang
- 4 Central Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
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Shih JW, Kung HJ. Long non-coding RNA and tumor hypoxia: new players ushered toward an old arena. J Biomed Sci 2017; 24:53. [PMID: 28789687 PMCID: PMC5547530 DOI: 10.1186/s12929-017-0358-4] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 07/25/2017] [Indexed: 01/17/2023] Open
Abstract
Hypoxia is a classic feature of the tumor microenvironment with a profound impact on cancer progression and therapeutic response. Activation of complex hypoxia pathways orchestrated by the transcription factor HIF (hypoxia-inducible factor) contributes to aggressive phenotypes and metastasis in numerous cancers. Over the past few decades, exponentially growing research indicated the importance of the non-coding genome in hypoxic tumor regions. Recently, key roles of long non coding RNAs (lncRNAs) in hypoxia-driven cancer progression have begun to emerge. These hypoxia-responsive lncRNAs (HRLs) play pivotal roles in regulating hypoxic gene expression at chromatic, transcriptional, and post-transcriptional levels by acting as effectors of the indirect response to HIF or direct modulators of the HIF-transcriptional cascade. Notably, the aberrant expression of HRLs significantly correlates with poor outcomes in cancer patients, showing promise for future utility as a tumor marker or therapeutic target. Here we address the latest advances made toward understanding the functional relevance of HRLs, the involvement of these transcripts in hypoxia response and the underlying action mechanisms, highlighting their specific roles in HIF-1 signaling regulation and hypoxia-associated malignant transformation.
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Affiliation(s)
- Jing-Wen Shih
- Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan. .,Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 110, Taiwan. .,Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan.
| | - Hsing-Jien Kung
- Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan.,Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 110, Taiwan.,Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, University of California at Davis, Sacramento, CA, 95817, USA.,Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 350, Taiwan
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143
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Wu X, Zhu H, Zhu S, Hao M, Li Q. lncRNA expression character associated with ischemic reperfusion injury. Mol Med Rep 2017; 16:3745-3752. [PMID: 28731128 PMCID: PMC5646951 DOI: 10.3892/mmr.2017.7051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 03/30/2017] [Indexed: 12/22/2022] Open
Abstract
Ischemic reperfusion injury (IRI) contributes to morbidity and mortality worldwide and results in a poor outcome for patients suffering from myocardial infarction. Ischemic post‑conditioning (IPostC), consisting of one or several brief periods of ischemia and reperfusion, generates powerful protection against IRI. The mechanism of IPostC initiation and development has previously been investigated, however still remains to be fully elucidated. Notably, long non‑coding (lnc) RNAs have previously been demonstrated to be important in cardiovascular diseases. However, there is little information about the systematic analysis of IRI‑associated lncRNA expression signature. The present study used microarrays to analyze the lncRNA expression characters of ischemic IPostc (corresponding to IRI), and demonstrated that 2,292 lncRNAs were observed to be upregulated and 1,848 lncRNAs downregulated. Gene ontology (GO) and Pathway analysis subsequently demonstrated that dysregulated lncRNAs participated in various biological processes, which are upregulated or downregulated in IPostC tissues. Finally, the present study verified that AK144818, ENSMUST00000156637, ENSMUST00000118342, ENSMUST00000118149, uc008ane.1, ENSMUST00000164933, ENSMUST00000162347, ENSMUST00000135945, and ENSMUST00000176338, ENSMUST00000120587, ENDMUST00000155271, ENSMUST00000125121 and Uc008thl.1 were associated with the initiation and development of IPostC. The present study may aid in the understanding of the initiation and development mechanisms of IPostC and provide novel and potential biomarkers that may be used in the diagnosis or as therapeutic targets in the treatment of IRI.
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Affiliation(s)
- Xiaowei Wu
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Hongyi Zhu
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Suhua Zhu
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Maojuan Hao
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Qingping Li
- Department of Pharmacology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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144
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Hao NB, He YF, Li XQ, Wang K, Wang RL. The role of miRNA and lncRNA in gastric cancer. Oncotarget 2017; 8:81572-81582. [PMID: 29113415 PMCID: PMC5655310 DOI: 10.18632/oncotarget.19197] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/20/2017] [Indexed: 12/14/2022] Open
Abstract
Gastric cancer is one of the most common cancers and has the highest mortality rate worldwide. It is worthwhile to explore the mechanism of gastric cancer progression. An increasing number of studies have found that non-coding RNAs including miRNA and lncRNA play important roles in gastric cancer progression. This review summarized the role of ectopic miRNA in gastric cancer proliferation, growth, migration, invasion and apoptosis. Meantime, aberrantly expressed miRNA also received a great deal of attention as potential biomarker for gastric cancer diagnosis and therapy. Over the last decade, lncRNA was considered to regulate gastric cancer progression at the transcript and post-transcript level. At the transcript level, lncRNA induced gastric cancer progression by changing chromatin modification and mRNA stabilization to regulate mRNA and miRNA expression. Furthermore, lncRNA regulated gastric cancer progression by completely combining with miRNA to produce ceRNA or promote protein stabilization at the post-transcript level. Greater attention of miRNA and lncRNA in gastric cancer can provide new insight of mechanism of cancer development and may be acted as a new anticancer target.
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Affiliation(s)
- Ning-Bo Hao
- Department of Gastroenterology, General Hospital of the PLA Rocket Force, Beijing, China
| | - Ya-Fei He
- Intensive Medical Center, 302 Hospital of PLA, Beijing, China
| | - Xiao-Qin Li
- Department of Ophthalmology, General Hospital of the PLA Rocket Force, Beijing, China
| | - Kai Wang
- New Era Stoke Care and Research Institute, General Hospital of the PLA Rocket Force, Beijing, China
| | - Rui-Ling Wang
- Department of Gastroenterology, General Hospital of the PLA Rocket Force, Beijing, China
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145
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Schmitt AM, Chang HY. Long Noncoding RNAs: At the Intersection of Cancer and Chromatin Biology. Cold Spring Harb Perspect Med 2017; 7:cshperspect.a026492. [PMID: 28193769 DOI: 10.1101/cshperspect.a026492] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although only 2% of the genome encodes protein, RNA is transcribed from the majority of the genetic sequence, suggesting a massive degree of cellular functionality is programmed in the noncoding genome. The mammalian genome contains tens of thousands of long noncoding RNAs (lncRNAs), many of which occur at disease-associated loci or are specifically expressed in cancer. Although the vast majority of lncRNAs have no known function, recurring molecular mechanisms for lncRNAs are now being observed in chromatin regulation and cancer pathways and emerging technologies are now providing tools to interrogate lncRNA molecular interactions and determine function of these abundant cellular macromolecules.
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Affiliation(s)
- Adam M Schmitt
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Howard Y Chang
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, California 94305
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146
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Tan J, Hou YC, Fu LN, Wang YQ, Liu QQ, Xiong H, Chen YX, Fang JY. Long Noncoding RNA CCAT2 as a Potential Novel Biomarker to Predict the Clinical Outcome of Cancer Patients: A Meta-Analysis. J Cancer 2017. [PMID: 28638466 PMCID: PMC5479257 DOI: 10.7150/jca.18626] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Background: Colon Cancer-Associated Transcript 2 (CCAT2) has been demonstrated associated with clinical outcomes in various tumors. However, the results from each study were unfortunately insufficient and not completely consistent. Therefore, we conduct a systematic meta-analysis to evaluate the value for a feasible biomarker for metastasis and prognosis. Methods: A meta-analysis was performed using data obtained through a systematic search of PubMed, EMBASE, Cochrane Library, China National Knowledge Infrastructure, Wanfang database and VIP database. The pooled odds ratio (OR) and hazard ratio (HR) with 95% Confidence interval (CI ) using random-effect were used to identify the relationship of CCAT2 with clinical outcome of cancer patients. Subgroup analysis and sensitivity analysis were performed. Results: A total of 867 patients from eight studies were finally included. Patients with high CCAT2 expression underwent an increased risk of lymph node metastasis (LNM) (OR=3.09, 95% CI: 1.53-6.26) and distant metastasis (DM) (OR=7.70, 95% CI: 3.26-18.17). CCAT2 was also significantly correlated with overall survival (OS) (HR=2.19, 95%CI: 1.70-2.82) and progression-free survival (PFS) (HR=2.59, 95% CI: 1.78-3.76). Moderate heterogeneity was observed in meta-analysis for LNM. However, the results remained robust in multiple sensitivity analyses. Conclusions: High expression of CCAT2 was linked with poor clinical outcome. CCAT2 can serve as a potential molecular marker for prognosis in different types of cancers.
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Affiliation(s)
- Juan Tan
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Yi-Chao Hou
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Lin-Na Fu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Yun-Qian Wang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Qian-Qian Liu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Hua Xiong
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Ying-Xuan Chen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Jing-Yuan Fang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
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147
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The long noncoding RNA lnc-EGFR stimulates T-regulatory cells differentiation thus promoting hepatocellular carcinoma immune evasion. Nat Commun 2017; 8:15129. [PMID: 28541302 PMCID: PMC5529670 DOI: 10.1038/ncomms15129] [Citation(s) in RCA: 257] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/01/2017] [Indexed: 12/12/2022] Open
Abstract
Long noncoding RNAs play a pivotal role in T-helper cell development but little is known about their roles in Treg differentiation and functions during the progression of hepatocellular carcinoma (HCC). Here, we show that lnc-epidermal growth factor receptor (EGFR) upregulation in Tregs correlates positively with the tumour size and expression of EGFR/Foxp3, but negatively with IFN-γ expression in patients and xenografted mouse models. Lnc-EGFR stimulates Treg differentiation, suppresses CTL activity and promotes HCC growth in an EGFR-dependent manner. Mechanistically, lnc-EGFR specifically binds to EGFR and blocks its interaction with and ubiquitination by c-CBL, stabilizing it and augmenting activation of itself and its downstream AP-1/NF-AT1 axis, which in turn elicits EGFR expression. Lnc-EGFR links an immunosuppressive state to cancer by promoting Treg cell differentiation, thus offering a potential therapeutic target for HCC. The role of long noncoding RNAs in regulating T-cell differentiation within the tumour microenvironment is unclear. Here the authors identify a lncRNA that, through direct interactions with EGFR, promotes T-regulatory cell differentiation within the microenvironment of hepatocellular carcinoma, thus promoting tumour growth via immune suppression.
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148
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Mao Y, Liu R, Zhou H, Yin S, Zhao Q, Ding X, Wang H. Transcriptome analysis of miRNA-lncRNA-mRNA interactions in the malignant transformation process of gastric cancer initiation. Cancer Gene Ther 2017; 24:267-275. [PMID: 28524153 DOI: 10.1038/cgt.2017.14] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/16/2017] [Accepted: 04/17/2017] [Indexed: 02/06/2023]
Abstract
Gastric cancer is a common heterogeneous malignancy that is pathologically characterized by the development of chronic atrophic gastritis and dysplasia of the epithelium. The pathogenic mechanisms at the molecular level are completely unclear. In the present study, we first address the expression network and miRNA-lncRNA-mRNA interaction in the malignant transformation process from normal mucosa and atrophic gastritis to a tumor. First, the long non-coding RNA (lncRNA), micro RNA (miRNA) and messenger RNA (mRNA) expression profiles of normal gastric mucosa, atrophic gastritis, gastric cancer and the peri-tumor tissues were analyzed using microarrays. Then, bioinformatic analyses were used to predict the gene targets and analyse their potential roles in tumorigenesis and progression of gastric cancer. Finally, an intersection analysis of microarray data showed that 10 miRNAs and 11 lncRNAs were detected in the malignant transformation process from normal mucosa tissues and atrophic gastritis to tumorigenesis, and many miRNAs and lncRNAs were novel and had important roles. Meanwhile, the significant pathways and biological functions regulated by the deregulated 21 non-coding genes were enriched. In conclusion, our work provides an important theoretical, experimental and clinical foundation for further research on more effective targets for the diagnosis, therapy and prognosis of gastric cancer.
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Affiliation(s)
- Y Mao
- Department of Gastroenterology, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China
| | - R Liu
- Department of Gastroenterology, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China
| | - H Zhou
- Department of Pharmacy, Anhui Medical University, Hefei, China
| | - S Yin
- Department of Geriatrics, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China
| | - Q Zhao
- Department of Food and Nutrition Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - X Ding
- Department of Gastroenterology, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China.,Department of Geriatrics, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China
| | - H Wang
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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149
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Weidle UH, Birzele F, Kollmorgen G, Rüger R. Long Non-coding RNAs and their Role in Metastasis. Cancer Genomics Proteomics 2017; 14:143-160. [PMID: 28446530 PMCID: PMC5420816 DOI: 10.21873/cgp.20027] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/13/2017] [Accepted: 03/15/2017] [Indexed: 02/08/2023] Open
Abstract
The perception of long non-coding RNAs as chunk RNA and transcriptional noise has been steadily replaced by their role as validated targets for a diverse set of physiological processes in the past few years. However, for the vast majority of lncRNAs their precise mode of action and physiological function remain to be uncovered. A large body of evidence has revealed their essential role in all stages of cancirogenesis and metastasis. In this review we focus on the role of lncRNAs in metastasis. We grouped selected lncRNAs into three categories based on in vitro and in vivo mode of action-related studies and clinical relevance for metastasis. Grouped according to their mode of action, in category I we discuss lncRNAs such as CCAT2, DREH, LET, NKILA, treRNA, HOTAIR, H19, FENDRR, lincROR, MALAT, GClnc1, BCAR4, SCHLAP1 and lncRNA ATP, all lncRNAs with in vitro and in vivo metastasis-related data and clinical significance. In category II we discuss lncRNAs CCAT1, PCAT1, PTENgp1, GPLINC, MEG3, ZEB2-AS, LCT13, ANRIL, NBAT1 and lncTCF7 all characterized by their mode of action in vitro and clinical significance, but pending or preliminary in vivo data. Finally, under category III, we discuss lncRNAs BANCR, FRLnc1, SPRY4-IT1 and LIMT with partially or poorly-resolved mode of action and varying degree of validation in clinical metastasis. Finally we discuss metastasis-related translational aspects of lncRNAs.
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Affiliation(s)
- Ulrich H Weidle
- Roche Innovation Center Munich, Roche Diagnostics GmbH, Penzberg, Germany
| | - Fabian Birzele
- Roche Innovation Center Basel, F. Hofman La Roche, Basel, Switzerland
| | - Gwen Kollmorgen
- Roche Innovation Center Munich, Roche Diagnostics GmbH, Penzberg, Germany
| | - Rüdiger Rüger
- Roche Innovation Center Munich, Roche Diagnostics GmbH, Penzberg, Germany
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150
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Zhang Y, Zhang Q, Zhang M, Yuan M, Wang Z, Zhang J, Zhou X, Zhang Y, Lin F, Na H, Ren S, Zuo Y. DC - SIGNR by influencing the lncRNA HNRNPKP2 upregulates the expression of CXCR4 in gastric cancer liver metastasis. Mol Cancer 2017; 16:78. [PMID: 28403883 PMCID: PMC5390362 DOI: 10.1186/s12943-017-0639-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 03/16/2017] [Indexed: 12/25/2022] Open
Abstract
Background Profiling evidences of selectin demonstrate that they play an crucial role in cancer progression and metastasis. However, DC-SIGNR as a family member of selectin participates in gastric cancer liver metastasis remains unknown. Methods The serum level of DC-SIGNR was evaluated in gastric cancer patients by ELISA. Manipulation DC-SIGNR expression in BGC823 and SGC7901 cell lines was mediated by lentivirus. Investigation the biological effects of DC-SIGNR were verified by MTT, wounding and transwell in vitro and experiments on animals to confirm gastric cancer liver metastasis by IVIS. Insights of the mechanism were employed microarray and bioinformatic analysis. Further to confirm the results were conducted by qRT-PCR, western blot and by flow cytometry. Results DC-SIGNR serum level was significantly increased in gastric cancer patients compared with healthy group. Additionally, DC-SIGNR level was associated with an advanced pathological stage in gastric cancer patients. DC-SIGNR knockdown inhibited the proliferation, migration and invasion of gastric cancer cells in vitro and suppressed the liver metastasis in vivo. While, DC-SIGNR overexpression promoted cell proliferation, migration and invasion. In mechanism, HNRNPKP2 as a lncRNA was upregulated after DC-SIGNR knockdown. Importantly, STAT5A promoted HNRNPKP2 expression after knockdown DC-SIGNR. Furthermore after HNRNPKP2 depletion, the downstream target gene CXCR4 was downregulated. Conclusions DC-SIGNR promoted gastric cancer liver metastasis mediated with HNRNPKP2 which expression was regulated by STAT5A. And HNRNPKP2 decreased the expression of downstream target gene CXCR4. These findings indicated potential therapeutic candidates for gastric cancer liver metastasis. Electronic supplementary material The online version of this article (doi:10.1186/s12943-017-0639-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yu Zhang
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China
| | - Qianshi Zhang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Shahekou District Zhongshan Road no. 467, 116023, Dalian, China
| | - Mengyang Zhang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Shahekou District Zhongshan Road no. 467, 116023, Dalian, China
| | - Menglang Yuan
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Shahekou District Zhongshan Road no. 467, 116023, Dalian, China
| | - Zhaohui Wang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Jingbo Zhang
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China
| | - Xu Zhou
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China
| | - Yinan Zhang
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China
| | - Fang Lin
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China
| | - Heya Na
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China
| | - Shuangyi Ren
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Shahekou District Zhongshan Road no. 467, 116023, Dalian, China.
| | - Yunfei Zuo
- Department of Clinical Biochemistry, College of Laboratory Diagnostic Medicine, Dalian Medical University, lvshun South Road West 9, Dalian, 116044, China.
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