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ANDERSON A, Orlandi P, Wang X, Xie D, Yang W, Feldman H. SAT-175 TRAJECTORIES OF KIDNEY FUNCTION AND THEIR PREDICTORS: FINDINGS FROM THE CHRONIC RENAL INSUFFICIENCY COHORT (CRIC) STUDY. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Wang J, Chen W, Jiang Z, Lin X, Qin T, Yang X, Liu T, Hu H, Li Z, Xie D, Yao H, Song E. Abstract P4-04-11: A small amount of primary breast cancer shows high tumor mutation burden that may benefit from immune checkpoint inhibitor therapy. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-04-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Targeted therapy using immune checkpoint inhibitors (ICIs) is a major breakthrough in cancer treatment in the last decade. ICIs like PD1 or PD-L1 antibodies have been shown to be quite effective in cancer like melanoma. However, in most other tumor types including breast cancer, the situation is not as optimistic. Only a small percentage of those patients respond to ICIs therapy. This highlights the importance of identifying biomarkers to predict which patients may benefit from such treatment. Tumor Mutation Burden (TMB) has been shown to be a sensitive marker for ICI treatment. This study is to investigate whether TBM could be used as a biomarker for breast cancer treatment.
Methods: We reviewed next generation sequencing studies of breast cancer. Two such studies with raw data provided were included in our analysis. One study entitled METABRIC performed targeted sequencing of 173 cancer-related genes in around 2500 primary breast cancer tissues. The other study was from TCGA breast cancer project, which performed Whole Exome Sequencing (WES) of around 1000 primary breast cancer samples. Mutation data were downloaded from public data deposit. The number of mutations per sample was calculated. TBM was calculated by divide the coverage in million base pair from that of the total mutation counts.
Results: In METABRIC study, 17272 mutations were identified in 2369 samples, with a median of 7 mutations per sample (95% CI: 6 ˜ 7). The median TMB of METABRIC dataset was 5.8 SNVs/Mb (95% CI: 5 ˜ 5.8). Totally 30 out 2369 (1.3%) samples had a TMB equal or large than 20 SNVs/Mb. In another cohort from TCGA breast cancer study using WES technology, 90172 mutations were identified in 977 samples, with a median of 44 mutations per sample (95% CI: 39 ˜ 50). The median TMB was 1 SNVs/Mb (95% CI: 0.9 ˜ 1.1). Totally 13 out 977 (1.3%) samples had a TMB equal or large than 20 SNVs/Mb.
Conclusions: Breast cancer shows middle to low mutation burden compared to other cancer types. Around 1.3% of breast cancer has quite high TMB of at least 20 SNVs/Mb, which may be qualified for immune checkpoint inhibitors therapy. Our study indicates that TMB may be incorporated as a standard test for late stage breast cancer patients in the clinical practice.
Keywords: Breast cancer, Tumor Mutation Burden, Whole exome sequencing, Targeted sequencing, Immune checkpoint
Citation Format: Wang J, Chen W, Jiang Z, Lin X, Qin T, Yang X, Liu T, Hu H, Li Z, Xie D, Yao H, Song E. A small amount of primary breast cancer shows high tumor mutation burden that may benefit from immune checkpoint inhibitor therapy [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-04-11.
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Affiliation(s)
- J Wang
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - W Chen
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Z Jiang
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - X Lin
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - T Qin
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - X Yang
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - T Liu
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - H Hu
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Z Li
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - D Xie
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - H Yao
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - E Song
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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Li X, Wu L, Chen H, Zhu Y, Wang W, Xu C, Lin X, Xie D, Du K. P091 Association Between BIM Polymorphism and Lung Cancer Outcomes: A Meta-analysis. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.10.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Liu S, Xie D, Zhou S, Xu C, Ye Z, Liu S, Wang G, Ding S, Xia Y. Neoadjuvant chemotherapy + concurrent chemoradiotherapy versus concurrent chemoradiotherapy ± adjuvant chemotherapy for locoregionally advanced NPC: An update meta-analysis and efficacy-toxicity joint analysis. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy438.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lin ZX, Ling H, Lin X, Xie D. [A meta-analysis of the effect of occupational exposure to 1-bromopropane on workers' nerve conduction velocity]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 36:343-346. [PMID: 29996378 DOI: 10.3760/cma.j.issn.1001-9391.2018.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analysis the occupational exposure to 1-bromopropane on the worker's nerve conduc-tion velocity. Methods: To PubMed, Wanfang, VIP, Chinese Journal Full-text Database (CNKI) and other databases as a data source, searched and screened database to October 2017 on occupational exposure to 1-bromopropane workers on the role of nerve conduction in the paper. According to inclusion and exclusion criteria, we screened literatures, extracted data and evaluated the quality of the included studies, using RevMan5.3 software to test the heterogeneity of the results and us-ing the corresponding mathematical model for data combination analysis. Results: A total of 5 articles were included in the literature. The results showed that the tibial nerve MCV of workers in the 1-bromopropane exposure group was slower than that in the control group (SMD=-0.47,95%CI=-0.70~-0.24) , the difference was statistically significant (Z=4.06, P<0.01). The tibial nerve DL of the exposure group was more prolonged than that of the control group (SMD=0.35,95%CI=0.00~0.69) , with a statistically significant difference (Z=1.99, P=0.05). The sural nerve SCV of the exposure group was slower than that of the control group (SMD=-0.47, 95%CI=-0.78~-0.15), with a statistically significant difference (Z=2.88,P<0.01). Conclusion: Occupational exposure to 1-bromopropane may have an effect on the worker's nerve conduction ve-locity.It's necessary to do broader and deeper neurotoxicity studies about 1-bromopropane.
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Affiliation(s)
- Z X Lin
- Shantou Institute of Occupational Disease Prevention and Control, Shantou 515000, China
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Xie D, Wang Y, Shen J, Hu J, Yin P, Gong J. Detection of carcinoembryonic antigen in peritoneal fluid of patients undergoing laparoscopic distal gastrectomy with complete mesogastric excision. Br J Surg 2018; 105:1471-1479. [PMID: 29964324 DOI: 10.1002/bjs.10881] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/02/2018] [Accepted: 03/29/2018] [Indexed: 12/23/2022]
Abstract
Abstract
Background
Surgery for gastric cancer may result in free intraperitoneal cancer cells. This study aimed to determine whether laparoscopic gastrectomy with complete mesogastric excision (D2 + CME) reduces the number of free intraperitoneal cancer cells.
Methods
Patients with gastric cancer who had a conventional D2 or D2 + CME laparoscopic distal gastrectomy between April 2015 and February 2017 were included in the study. Intraoperative peritoneal washings were collected before and after tumour resection. Reverse transcriptase–quantitative real-time PCR for carcinoembryonic antigen (CEA) was used to assess the presence of gastric cancer cells.
Results
Eighty-five patients underwent conventional D2 lymphadenectomy and 76 had the D2 + CME procedure. Of 161 peritoneal fluid samples obtained before gastrectomy, 137 (D2, 72; D2 + CME, 65) had low CEA expression indicative of no cancer cells. After gastrectomy, high CEA expression was detected in 23 of the 72 samples (32 per cent) from patients in the D2 group, and in ten of the 65 samples (15 per cent) from the D2 + CME group. In the overall cohort, mean CEA expression level after gastrectomy was lower in the D2 + CME group than in the D2 group (P = 0·0038). In patients with low CEA expression before gastrectomy, disease-free survival in the D2 + CME group was better than that in the D2 group (P = 0·033).
Conclusion
Laparoscopic distal gastrectomy with complete mesogastric excision reduces the number of free intraperitoneal cancer cells and is associated with a better disease-free survival than conventional D2 gastrectomy.
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Affiliation(s)
- D Xie
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Wang
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Shen
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Hu
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - P Yin
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Gong
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chan LH, Zhou L, Ng KY, Wong TL, Lee TK, Ching YP, Yuan YF, Xie D, Richard S, Huen MS, Guan XY, Ma S. Abstract 4479: Protein arginine methyltransferase PRMT6 regulates cancer stemness through CRAF methylation in hepatocellular carcinoma. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-4479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Arginine methylation is a post-translational modification that plays pivotal roles in signal transduction and gene transcription during cell fate determination. We found protein methyltransferase 6 (PRMT6) to be frequently down-regulated in hepatocellular carcinoma (HCC) cells and its expression to negatively correlate with aggressive cancer features in HCC patients. Silencing of PRMT6 promoted the tumor-initiating, metastasis and therapy resistance potential of HCC cells. Consistently, loss of PRMT6 expression aggravated liver tumorigenesis in a DEN+CCL4 HCC induced PRMT6-/- mouse model. Integrated transcriptome and protein-protein interaction studies revealed an enrichment of genes implicated in RAS signaling and that PRMT6 interacted with CRAF, and likely other RAF family members, and their methylation at conserved arginine 100, negatively regulating its activity, and as a consequence resulting in enhanced MEK/ERK signaling. Our work uncovered a critical repressive function for PRMT6 in maintenance of HCC cells by regulating the MEK/ERK pathway via arginine methylation of RAF, providing a new avenue of molecular mechanism by which ERK mediated stemness in HCC cells are developed.
Citation Format: LH Chan, L Zhou, Kai Yu Ng, TL Wong, TK Lee, YP Ching, YF Yuan, D Xie, S Richard, MS Huen, XY Guan, S Ma. Protein arginine methyltransferase PRMT6 regulates cancer stemness through CRAF methylation in hepatocellular carcinoma [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4479.
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Affiliation(s)
- LH Chan
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - L Zhou
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - Kai Yu Ng
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - TL Wong
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - TK Lee
- 2The Hong Kong Polytechnic University, Hong Kong, Hong Kong
| | - YP Ching
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - YF Yuan
- 3Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - D Xie
- 3Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - S Richard
- 4McGill University, Montreal, Quebec, Canada
| | - MS Huen
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - XY Guan
- 1The University of Hong Kong, Hong Kong, Hong Kong
| | - S Ma
- 1The University of Hong Kong, Hong Kong, Hong Kong
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Jiang L, Wei X, Xie D, Wang Q, Dai M, Dou Z. Study on effects botulinum toxin type A injection for pathological of gastrocnemius in rats with spinal cord injury. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Severson K, Xie D, Cha S, Liang H, Nelson S, Sekulic A, Pittelkow M, Mangold A. 338 Necrobiosis lipoidica comorbidities and complications. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Severson K, Liang H, Nelson S, Xie D, Cha S, Sekulic A, Pittelkow M, Mangold A. 1036 Necrobiosis lipoidica histopathology & inflammatory composition. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Xie D, Zhu WF, Cheng H, Yao ZY, Li M, Zhao YL. An antibody-free assay for simultaneous capture and detection of glycoproteins by surface enhanced Raman spectroscopy. Phys Chem Chem Phys 2018; 20:8881-8886. [DOI: 10.1039/c7cp08478a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A single-step reaction, antibody-free assay for simultaneous capture and detection of glycoproteins by SERS spectroscopy.
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Affiliation(s)
- D. Xie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics
- Chinese Academy of Sciences 19B
- Beijing 100049
- China
- Institute of Physical Science and Information Technology
| | - W. F. Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics
- Chinese Academy of Sciences 19B
- Beijing 100049
- China
| | - H. Cheng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics
- Chinese Academy of Sciences 19B
- Beijing 100049
- China
| | - Z. Y. Yao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics
- Chinese Academy of Sciences 19B
- Beijing 100049
- China
| | - M. Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics
- Chinese Academy of Sciences 19B
- Beijing 100049
- China
| | - Y. L. Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics
- Chinese Academy of Sciences 19B
- Beijing 100049
- China
- CAS Center for Excellence in Nanoscience
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Ju HQ, Lu YX, Wu QN, Liu J, Zeng ZL, Mo HY, Chen Y, Tian T, Wang Y, Kang TB, Xie D, Zeng MS, Huang P, Xu RH. Disrupting G6PD-mediated Redox homeostasis enhances chemosensitivity in colorectal cancer. Oncogene 2017; 36:6282-6292. [PMID: 28692052 PMCID: PMC5684443 DOI: 10.1038/onc.2017.227] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/28/2017] [Accepted: 05/27/2017] [Indexed: 12/19/2022]
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) is a key enzyme that generates NADPH to maintain reduced glutathione (GSH), which scavenges reactive oxygen species (ROS) to protect cancer cell from oxidative damage. In this study, we mainly investigate the potential roles of G6PD in colorectal cancer (CRC) development and chemoresistance. We discover that G6PD is overexpressed in CRC cells and patient specimens. High expression of G6PD predicts poor prognosis and correlated with poor outcome of oxaliplatin-based first-line chemotherapy in patients with CRC. Suppressing G6PD decreases NADPH production, lowers GSH levels, impairs the ability to scavenge ROS levels, and enhances oxaliplatin-induced apoptosis in CRC via ROS-mediated damage in vitro. In vivo experiments further shows that silencing G6PD with lentivirus or non-viral gene delivery vector enhances oxaliplatin anti-tumor effects in cell based xenografts and PDX models. In summary, our finding indicated that disrupting G6PD-mediated NADPH homeostasis enhances oxaliplatin-induced apoptosis in CRC through redox modulation. Thus, this study indicates that G6PD is a potential prognostic biomarker and a promising target for CRC therapy.
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Affiliation(s)
- H-Q Ju
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Y-X Lu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Q-N Wu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - J Liu
- Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University, Guangzhou 510060, China
| | - Z-L Zeng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - H-Y Mo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Y Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
- Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University, Guangzhou 510060, China
| | - T Tian
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Y Wang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - T-B Kang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - D Xie
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - M-S Zeng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - P Huang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - R-H Xu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
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Zheng GZ, Chang B, Lin FX, Xie D, Hu QX, Yu GY, Du SX, Li XD. Meta-analysis comparing denosumab and zoledronic acid for treatment of bone metastases in patients with advanced solid tumours. Eur J Cancer Care (Engl) 2017; 26:e12541. [PMID: 27430483 DOI: 10.1111/ecc.12541] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2016] [Indexed: 02/05/2023]
Abstract
The purpose of this meta-analysis was to evaluate the efficacy of denosumab, compared with zoledronic acid (ZA), in delaying skeletal-related events (SREs) and enhancing overall survival in patients with advanced solid tumours and bone metastases. A systematic literature search of several electronic databases, including PubMed, Medline, Embase, the Cochrane Library, CKNI and Web of Science with Conference Proceedings, was performed. Only randomised controlled trials assessing denosumab in comparison with ZA, in patients with advanced solid tumours and metastatic-stage disease, were included. The primary outcome was the time to first SRE. The risk of developing subsequent on-study SREs and overall survival were also evaluated. Three randomised controlled trials with a total of 5,544 patients with advanced solid tumours and bone metastases were included in the meta-analysis. There were 2,776 patients treated with denosumab and 2,768 treated with ZA. The pooled analysis showed that denosumab was superior to ZA in delaying time to first on-study SRE (odds ratio [OR]: 0.82; 95% CI: 0.75-0.89, p < 0.0001) and multiple SREs (risk ratio: 0.81; 95% CI: 0.74-0.88, p < 0.0001). However, no significant difference was found in overall survival improvement between denosumab and ZA (OR: 1.02; 95% CI: 0.91-1.15, p = 0.71). This meta-analysis indicates that denosumab is superior to ZA in delaying SREs for patients with bone metastases. No significant difference was observed between denosumab and ZA, regarding overall survival. We support denosumab as a potential novel treatment option for the management of bone metastases in advanced solid tumours.
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Affiliation(s)
- G Z Zheng
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - B Chang
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - F X Lin
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - D Xie
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Q X Hu
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
- Department of Orthopedics, The Affiliated Luohu Hospital, Shenzhen University, Shenzhen, Guangdong, China
| | - G Y Yu
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - S X Du
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
- Department of Orthopedics, The Affiliated Luohu Hospital, Shenzhen University, Shenzhen, Guangdong, China
| | - X D Li
- Department of Orthopedics, The First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
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Zhang H, Wang H, Zeng C, Yan B, Ouyang J, Liu X, Sun Q, Zhao C, Fang H, Pan J, Xie D, Yang J, Zhang T, Bai X, Cai D. mTORC1 activation downregulates FGFR3 and PTH/PTHrP receptor in articular chondrocytes to initiate osteoarthritis. Osteoarthritis Cartilage 2017; 25:952-963. [PMID: 28043938 DOI: 10.1016/j.joca.2016.12.024] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 11/09/2016] [Accepted: 12/21/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Articular chondrocyte activation, involving aberrant proliferation and prehypertrophic differentiation, is essential for osteoarthritis (OA) initiation and progression. Disruption of mechanistic target of rapamycin complex 1 (mTORC1) promotes chondrocyte autophagy and survival, and decreases the severity of experimental OA. However, the role of cartilage mTORC1 activation in OA initiation is unknown. In this study, we elucidated the specific role of mTORC1 activation in OA initiation, and identify the underlying mechanisms. METHOD Expression of mTORC1 in articular cartilage of OA patients and OA mice was assessed by immunostaining. Cartilage-specific tuberous sclerosis complex 1 (Tsc1, mTORC1 upstream inhibitor) knockout (TSC1CKO) and inducible Tsc1 KO (TSC1CKOER) mice were generated. The functional effects of mTORC1 in OA initiation and development on its downstream targets were examined by immunostaining, western blotting and qPCR. RESULTS Articular chondrocyte mTORC1 was activated in early-stage OA and in aged mice. TSC1CKO mice exhibited spontaneous OA, and TSC1CKOER mice (from 2 months) exhibited accelerated age-related and DMM-induced OA phenotypes, with aberrant chondrocyte proliferation and hypertrophic differentiation. This was associated with hyperactivation of mTORC1 and dramatic downregulation of FGFR3 and PPR, two receptors critical for preventing chondrocyte proliferation and differentiation. Rapamycin treatment reversed these phenotypes in KO mice. Furthermore, in vitro rescue experiments demonstrated that p73 and ERK1/2 may mediate the negative regulation of FGFR3 and PPR by mTORC1. CONCLUSION mTORC1 activation stimulates articular chondrocyte proliferation and differentiation to initiate OA, in part by downregulating FGFR3 and PPR.
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Affiliation(s)
- H Zhang
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - H Wang
- State Key Laboratory of Organ Failure Research, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China; Key Laboratory of Tropical Diseases and Translational Medicine of the Ministry of Education, Hainan Medical College, Haikou, China.
| | - C Zeng
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - B Yan
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - J Ouyang
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - X Liu
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - Q Sun
- State Key Laboratory of Organ Failure Research, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - C Zhao
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - H Fang
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - J Pan
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - D Xie
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
| | - J Yang
- Academy of Orthopedics, General Hospital of Guangzhou Military Command of PLA, Guangzhou, China.
| | - T Zhang
- Academy of Orthopedics, General Hospital of Guangzhou Military Command of PLA, Guangzhou, China.
| | - X Bai
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China; State Key Laboratory of Organ Failure Research, Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - D Cai
- Academy of Orthopedics, Guangdong Province, Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.
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Moslin R, Gardner D, Santella J, Zhang Y, Duncia JV, Liu C, Lin J, Tokarski JS, Strnad J, Pedicord D, Chen J, Blat Y, Zupa-Fernandez A, Cheng L, Sun H, Chaudhry C, Huang C, D'Arienzo C, Sack JS, Muckelbauer JK, Chang C, Tredup J, Xie D, Aranibar N, Burke JR, Carter PH, Weinstein DS. Identification of imidazo[1,2- b]pyridazine TYK2 pseudokinase ligands as potent and selective allosteric inhibitors of TYK2 signalling. Medchemcomm 2017; 8:700-712. [PMID: 30108788 PMCID: PMC6071835 DOI: 10.1039/c6md00560h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 12/06/2016] [Indexed: 12/19/2022]
Abstract
As a member of the Janus (JAK) family of non-receptor tyrosine kinases, TYK2 mediates the signaling of pro-inflammatory cytokines including IL-12, IL-23 and type 1 interferon (IFN), and therefore represents an attractive potential target for treating the various immuno-inflammatory diseases in which these cytokines have been shown to play a role. Following up on our previous report that ligands to the pseudokinase domain (JH2) of TYK2 suppress cytokine-mediated receptor activation of the catalytic (JH1) domain, the imidazo[1,2-b]pyridazine (IZP) 7 was identified as a promising hit compound. Through iterative modification of each of the substituents of the IZP scaffold, the cellular potency was improved while maintaining selectivity over the JH1 domain. These studies led to the discovery of the JH2-selective TYK2 inhibitor 29, which provided encouraging systemic exposures after oral dosing in mice. Phosphodiesterase 4 (PDE4) was identified as an off-target and potential liability of the IZP ligands, and selectivity for TYK2 JH2 over this enzyme was obtained by elaborating along selectivity vectors determined from analyses of X-ray co-crystal structures of representative ligands of the IZP class bound to both proteins.
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Affiliation(s)
- R Moslin
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - D Gardner
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J Santella
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - Y Zhang
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J V Duncia
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - C Liu
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J Lin
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J S Tokarski
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J Strnad
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - D Pedicord
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J Chen
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - Y Blat
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | | | - L Cheng
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - H Sun
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - C Chaudhry
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - C Huang
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - C D'Arienzo
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J S Sack
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J K Muckelbauer
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - C Chang
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J Tredup
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - D Xie
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - N Aranibar
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - J R Burke
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - P H Carter
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
| | - D S Weinstein
- Bristol-Myers Squibb Research , Princeton , New Jersey , USA .
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Deng YY, Shen FC, Xie D, Han QP, Fang M, Chen CB, Zeng HK. Progress in Drug Treatment of Cerebral Edema. Mini Rev Med Chem 2017; 16:917-25. [PMID: 26948324 DOI: 10.2174/1389557516666160304151233] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 10/29/2015] [Accepted: 02/27/2016] [Indexed: 11/22/2022]
Abstract
Cerebral edema causes intracranial hypertension (ICH) which leads to severe outcome of patients in the clinical setting. Effective anti-edema therapy may significantly decrease the mortality in a variety of neurological conditions. At present drug treatment is a cornerstone in the management of cerebral edema. Osmotherapy has been the mainstay of pharmacologic therapy. Mannitol and hypertonic saline (HS) are the most commonly used osmotic agents. The relative safety and efficacy of HS and mannitol in the treatment of cerebral edema and reduction of enhanced ICP have been demonstrated in the past decades. Apart from its osmotic force, HS exerts anti-edema effects partly through inhibition of Na(+)-K(+)-2Cl(-) Cotransporter-1 (NKCC1) and aquaporin 4 (AQP4) expression in astrocytes. Melatonin may also reduce brain edema and exert neuroprotective effect on several central nervous system diseases through inhibition of inflammatory response. The inhibitors of Na/H exchanger, NKCC and AQP4 may attenuate brain edema formation through inhibition of excessive transportation of ion and water from blood into the cerebral tissue. In this review we survey some of the most recent findings in the drug treatment of brain edema focusing on the use of osmotherapy, melatonin and inhibitors of ion cotransporters and water channels. A better understanding of the molecular mechanism of these agents would help to improve in the clinical management of patients with brain edema.
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Affiliation(s)
- Y Y Deng
- Department of Emergency and Critical Care Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, P.R. China.
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Xie D. Short-term outcomes of laparoscopic distal gastrectomy (D2+CME) for obese patients with advanced gastric cancer. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30355-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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69
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Xie D, Gheiler V, Bianco F, Perito P, Gheiler E. 044 Possible Preventive Effect of Preoperative Gentamicin on Penile Prosthesis Infection: A Retrospective Comparison of two Different Doses. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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70
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Xie D, Gong J. Complete mesogastrium excision (CME) can reduce cancer leak from mesogastrium during D2 radical gastrectomy in patients with advanced gastric cancer. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30357-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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71
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Li XD, Zhang JX, Jiang LJ, Wang FW, Liu LL, Liao YJ, Jin XH, Chen WH, Chen X, Guo SJ, Zhou FJ, Zeng YX, Guan XY, Liu ZW, Xie D. Overexpression of maelstrom promotes bladder urothelial carcinoma cell aggressiveness by epigenetically downregulating MTSS1 through DNMT3B. Oncogene 2016; 35:6281-6292. [PMID: 27181205 DOI: 10.1038/onc.2016.165] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 02/29/2016] [Accepted: 03/31/2016] [Indexed: 12/15/2022]
Abstract
We have recently identified and characterized a novel oncogene, maelstrom (MAEL) from 1q24, in the pathogenesis of hepatocellular carcinoma. In this study, MAEL was investigated for its oncogenic role in urothelial carcinoma of the bladder (UCB) tumorigenesis/aggressiveness and underlying molecular mechanisms. Here, we report that overexpression of MAEL in UCB is important in the acquisition of an aggressive and/or poor prognostic phenotype. In UCB cell lines, knockdown of MAEL by short hairpin RNA is sufficient to inhibit cell growth, invasiveness/metastasis and suppressed epithelial-mesenchymal transition (EMT), whereas ectopic overexpression of MAEL promoted cell growth, invasive and/or metastatic capacity and enhanced EMT both in vitro and in vivo. We further demonstrate that MAEL could induce UCB cell EMT by downregulating a critical downstream target, the metastasis suppressor 1 (MTSS1) gene, ultimately leading to an increased invasiveness of cancer cells. Notably, overexpression of MAEL in UCB cells substantially enhanced the enrichment of DNA methyltrans-ferase (DNMT)3B and histone deacetylase (HDAC)1/2 on the promoter of the MTSS1, and thereby epigenetically suppressing the MTSS1 transcription. Downregulation of MTSS1 by MAEL in UCB cells is partially dependent on DNMT3B. Furthermore, we identify that beside the gene amplification of MAEL, miR-186 is a key negative regulator of MAEL and downregulation of miR-186 is another important mechanism for MAEL overexpression in UCBs. These data suggest that overexpression of MAEL, caused by gene amplification and/or decreased miR-186, has a critical oncogenic role in UCB pathogenesis by downregulation of MTSS1, and MAEL could be used as a novel prognostic marker and/or effective therapeutic target for human UCB.
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Affiliation(s)
- X-D Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - J-X Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Oncology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - L-J Jiang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - F-W Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - L-L Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y-J Liao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - X-H Jin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - W-H Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - X Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - S-J Guo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - F-J Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y-X Zeng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - X-Y Guan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, China
| | - Z-W Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - D Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
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Yuping L, Xuefei H, Xie D, Jian Y, Gening J, Chang C. O-092A MODIFIED PREDICTION MODEL FOR ACUTE PULMONARY EMBOLISM AFTER THORACIC SURGERY FOR LUNG CANCER. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Wang H, Xu X, Xie D, Jiang G. P-210UPPER LOBECTOMY COMBINED WITH SUPERIOR SEGMENTECTOMY OF THE LOWER LOBE: A HIGH-RISK OPERATION. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cui J, Xia T, Xie D, Gao Y, Jia Z, Wei D, Wang L, Huang S, Quan M, Xie K. HGF/Met and FOXM1 form a positive feedback loop and render pancreatic cancer cells resistance to Met inhibition and aggressive phenotypes. Oncogene 2016; 35:4708-18. [PMID: 26876216 PMCID: PMC4985506 DOI: 10.1038/onc.2016.14] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/30/2015] [Accepted: 12/27/2015] [Indexed: 02/06/2023]
Abstract
Purpose Hepatocyte growth factor (HGF)/Met signaling plays critical roles in pancreatic ductal adenocarcinoma (PDA) development and progression and is considered a potential therapeutic target for this disease. However, the mechanism of aberrant activation of HGF/Met signaling and resistance to Met inhibition in PDA remains unclear. Experimental Design The mechanistic role of cross-talk between Forkhead box M1 (FOXM1) and HGF/Met signaling in promotion of PDA growth and resistance to Met inhibition was examined using cell culture, molecular biology and mouse models; and the relevance of our experimental and mechanistic findings were validated using human PDA tissues. Results Met was markedly overexpressed in both PDA cell lines and pancreatic tumor specimens, and the expression of Met correlated directly with that of FOXM1 in human tumor specimens. Mechanistically, FOXM1 bound to the promoter region of the Met gene and transcriptionally increased the expression of Met. Increased expression of FOXM1 enhanced the activation of HGF/Met signaling and its downstream pathways, including RAS/extracellular signal-regulated kinase 1/2, phosphoinositide 3-kinase/AKT, and signal transducer and activator of transcription 3. Furthermore, activation of HGF/Met signaling increased the expression and transcriptional activity of FOXM1, and the cross-talk between FOXM1 and HGF/Met signaling promoted PDA growth and resistance to Met inhibition. Conclusions Collectively, our findings identified a positive feedback loop formed by FOXM1 and HGF/Met and revealed that this loop is a potentially effective therapeutic target for PDA.
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Affiliation(s)
- J Cui
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - T Xia
- Department of Gastroenterology, Shanghai Changhai Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - D Xie
- Department of Oncology, Shanghai Tongji University Affiliated East Hospital, Shanghai, People's Republic of China
| | - Y Gao
- Department of Oncology, Shanghai Tongji University Affiliated East Hospital, Shanghai, People's Republic of China
| | - Z Jia
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - D Wei
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L Wang
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S Huang
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M Quan
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Oncology, Shanghai Tongji University Affiliated East Hospital, Shanghai, People's Republic of China
| | - K Xie
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Koivisto H, Kalvas T, Tarvainen O, Komppula J, Laulainen J, Kronholm R, Ranttila K, Tuunanen J, Thuillier T, Xie D, Machicoane G. Ion source research and development at University of Jyväskylä: Studies of different plasma processes and towards the higher beam intensities. Rev Sci Instrum 2016; 87:02A725. [PMID: 26931943 DOI: 10.1063/1.4934687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Several ion source related research and development projects are in progress at the Department of Physics, University of Jyväskylä (JYFL). The work can be divided into investigation of the ion source plasma and development of ion sources, ion beams, and diagnostics. The investigation covers the Electron Cyclotron Resonance Ion Source (ECRIS) plasma instabilities, vacuum ultraviolet (VUV) and visible light emission, photon induced electron emission, and the development of plasma diagnostics. The ion source development covers the work performed for radiofrequency-driven negative ion source, RADIS, beam line upgrade of the JYFL 14 GHz ECRIS, and the development of a new room-temperature-magnet 18 GHz ECRIS, HIISI.
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Affiliation(s)
- H Koivisto
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - T Kalvas
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - O Tarvainen
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - J Komppula
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - J Laulainen
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - R Kronholm
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - K Ranttila
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - J Tuunanen
- Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland
| | - T Thuillier
- LPSC, CNRS/IN2P3, Université Grenoble-Alpes1, 53 Rue des Martyrs, 38026 Grenoble Cedex, France
| | - D Xie
- Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - G Machicoane
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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Lu W, Qian C, Sun LT, Zhang XZ, Fang X, Guo JW, Yang Y, Feng YC, Ma BH, Xiong B, Ruan L, Zhao HW, Zhan WL, Xie D. High intensity high charge state ion beam production with an evaporative cooling magnet ECRIS. Rev Sci Instrum 2016; 87:02A738. [PMID: 26931956 DOI: 10.1063/1.4936183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
LECR4 (Lanzhou ECR ion source No. 4) is a room temperature electron cyclotron resonance ion source, designed to produce high current, high charge state ion beams for the SSC-LINAC injector (a new injector for sector separated cyclotron) at the Institute of Modern Physics. LECR4 also serves as a PoP machine for the application of evaporative cooling technology in accelerator field. To achieve those goals, LECR4 ECR ion source has been optimized for the operation at 18 GHz. During 2014, LECR4 ion source was commissioned at 18 GHz microwave of 1.6 kW. To further study the influence of injection stage to the production of medium and high charge state ion beams, in March 2015, the injection stage with pumping system was installed, and some optimum results were produced, such as 560 eμA of O(7+), 620 eμA of Ar(11+), 430 eμA of Ar(12+), 430 eμA of Xe(20+), and so on. The comparison will be discussed in the paper.
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Affiliation(s)
- W Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - C Qian
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - L T Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Z Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Fang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - J W Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y Yang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y C Feng
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B H Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B Xiong
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - L Ruan
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - H W Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - W L Zhan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - D Xie
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Zhou D, Xie D, Shi F, Wang D, Ge X, Xia X, Wang X, Gu C, Tu J. Crystalline/amorphous tungsten oxide core/shell hierarchical structures and their synergistic effect for optical modulation. J Colloid Interface Sci 2015; 460:200-8. [PMID: 26321573 DOI: 10.1016/j.jcis.2015.08.042] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 08/16/2015] [Accepted: 08/20/2015] [Indexed: 10/23/2022]
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Xie D, Na J, Zhang M, Dong S, Xiao X. CT angiography of the lower extremity and coronary arteries using 256-section CT: a preliminary study. Clin Radiol 2015; 70:1281-8. [PMID: 26275584 DOI: 10.1016/j.crad.2015.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 05/18/2015] [Accepted: 07/06/2015] [Indexed: 10/23/2022]
Abstract
AIM To investigate the possible use of a 256-section computed tomography (CT) prospective electrocardiography (ECG)-gated wide volume scanning protocol for combined angiography of the lower extremity and coronary arteries, after a single injection of contrast medium, in patients with lower extremity peripheral arterial disease (PAD). MATERIALS AND METHODS Thirty-four patients with suspected PAD underwent CT angiography (CTA) with a prospective ECG-gated protocol that covered the level of the tracheal bifurcation to the foot sole. Digital subtraction angiography (DSA) of the lower extremity arteries was performed on patients requiring therapeutic intervention. Image quality and stenosis of the coronary and lower extremity arteries were assessed. RESULTS A total of 93.1% of the coronary segments were adequate for diagnosis. 17 (50%) patients showed coronary artery stenosis ≥50%. A total of 95.8% of the lower extremity arterial segments were adequate for diagnosis. Twenty-eight patients with severe lower extremity arterial stenosis or occlusion underwent DSA. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of CTA for the detection of significant lower arterial stenosis (≥50%) was 94.8%, 97.2%, 95.3%, 96.9%, and 96.3%, respectively. CONCLUSION Using the prospective ECG-gated wide volume CTA protocol, images of the coronary and lower extremity arteries suitable for diagnosis can be acquired simultaneously after a single injection of contrast agent. In addition to accurately diagnosing PAD, combined angiography may be used to screen for coronary heart disease in patients with PAD.
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Affiliation(s)
- D Xie
- Department of Computer Tomography, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - J Na
- Department of MRI, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - M Zhang
- Department of Computer Tomography, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - S Dong
- Department of Computer Tomography, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - X Xiao
- Department of Computer Tomography, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China.
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80
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Jia Y, Xie D, Zhu K, Xiao X. Clinical application of 100 kVp acquisition with an iterative reconstruction technique in retrospective electrocardiogram-gated thoracoabdominal aortic CT angiography. Clin Radiol 2015; 70:588-94. [DOI: 10.1016/j.crad.2015.01.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 01/04/2015] [Accepted: 01/16/2015] [Indexed: 11/27/2022]
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81
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Li K, Hao Y, Hu X, Xie D, Li X, Zheng H, Fu Y, Chen Y, Zheng Y. The effect of sensorimotor training performed by carers on home-based rehabilitation in stroke patients. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shinohara H, Urabe Y, Maeda N, Xie D, Sasadai J, Fujii E. Does shoulder impingement syndrome affect the shoulder kinematics and associated muscle activity in archers? J Sports Med Phys Fitness 2014; 54:772-779. [PMID: 25350034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Archery related injuries, such as shoulder impingement syndrome are caused by repeated motion of the shoulder. The aim of this study was to analyze differences in the shoulder kinematics and the associated muscle activity between archers with shoulder impingement and uninjured archery players. METHODS Thirty male archers, who were divided into an impingement group and an uninjured group, were included in this study. The angle of scapular elevation, shoulder joint abduction, horizontal extension, and elbow joint flexion as well as the electromyographic activity of the upper trapezius, lower trapezius, deltoid middle, deltoid posterior, biceps brachii, and triceps brachii muscles at the point of stabilization during shooting were measured. Variables differing between impingement and uninjured groups were identified, and a stepwise regression analysis was performed to identify a combination of variables that effectively impingement syndrome. RESULTS The results indicated that the angle of scapular elevation was significantly greater than that uninjured group (P<0.05). The angle of horizontal extension in the impingement group was significantly smaller than that in the uninjured group (P<0.05). The angle of elbow flexion in the impingement group was significantly smaller than that in the uninjured group (P<0.05). The levels of upper trapezius and deltoid middle muscle activity were significantly higher in the impingement group, while the level of lower trapezius muscle activity was significantly lower (P<0.05) when compared to the uninjured group. The impingement group had a greater angle of scapular elevation, smaller angle of horizontal extension, smaller angle of elbow flexion, higher the levels of upper trapezius, lower the levels of lower trapezius, higher deltoid middle muscle activity and higher UT/LT ratio (all differences were significant). A logistic model for predicting impingement syndrome showed that UT/LT ratio was significantly related impingement syndrome (P<0.05). CONCLUSION The authors concluded that archers with shoulder impingement syndrome exhibit different kinematics and muscle activity compared to uninjured archers. Therefore, in order to prevent shoulder joint impingement during archery, training is necessary what can make lower trapezius muscle activity increased to decrease the UT/LT ratio.
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Affiliation(s)
- H Shinohara
- Graduate School of Biomedical and Health Sciences Hiroshima University, Kasumi 1‑2‑3 Minami‑ku, Hiroshima, Japan -
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Li Y, Qin X, Xie D, Tang G, Xing H, Li Z, Xu X, Hou F, Xu X. Body mass index and annual estimated GFR decline in Chinese adults with normal renal function. Eur J Clin Nutr 2014; 69:922-6. [DOI: 10.1038/ejcn.2014.221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 07/23/2014] [Accepted: 09/09/2014] [Indexed: 12/14/2022]
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84
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Qian D, Zhang B, Zeng XL, Le Blanc JM, Guo YH, Xue C, Jiang C, Wang HH, Zhao TS, Meng MB, Zhao LJ, Hao JH, Wang P, Xie D, Lu B, Yuan ZY. Inhibition of human positive cofactor 4 radiosensitizes human esophageal squmaous cell carcinoma cells by suppressing XLF-mediated nonhomologous end joining. Cell Death Dis 2014; 5:e1461. [PMID: 25321468 PMCID: PMC4649520 DOI: 10.1038/cddis.2014.416] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/26/2014] [Accepted: 08/28/2014] [Indexed: 12/24/2022]
Abstract
Radiotherapy has the widest application to esophageal squamous cell carcinoma (ESCC) patients. Factors associated with DNA damage repair have been shown to function in cell radiosensitivity. Human positive cofactor 4 (PC4) has a role in nonhomologous end joining (NHEJ) and is involved in DNA damage repair. However, the clinical significance and biological role of PC4 in cancer progression and cancer cellular responses to chemoradiotherapy (CRT) remain largely unknown. The aim of the present study was to investigate the potential roles of PC4 in the radiosensitivity of ESCC. In this study, we showed that knockdown of PC4 substantially increased ESCC cell sensitivity to ionizing radiation (IR) both in vitro and in vivo and enhanced radiation-induced apoptosis and mitotic catastrophe (MC). Importantly, we demonstrated that silencing of PC4 suppressed NHEJ by downregulating the expression of XLF in ESCC cells, whereas reconstituting the expression of XLF protein in the PC4-knockdown ESCC cells restored NHEJ activity and radioresistance. Moreover, high expression of PC4 positively correlated with ESCC resistance to CRT and was an independent predictor for short disease-specific survival of ESCC patients in both of our cohorts. These findings suggest that PC4 protects ESCC cells from IR-induced death by enhancing the NHEJ-promoting activity of XLF and could be used as a novel radiosensitivity predictor and a promising therapeutic target for ESCCs.
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Affiliation(s)
- D Qian
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - B Zhang
- Department of Lung Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - X-L Zeng
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - J M Le Blanc
- Department of Radiation Oncology, Bodine Cancer Center, Thomas Jefferson University School of Medicine, Philadelphia, PA, USA
| | - Y-H Guo
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - C Xue
- Department of Radiation Oncology, Bodine Cancer Center, Thomas Jefferson University School of Medicine, Philadelphia, PA, USA
| | - C Jiang
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - H-H Wang
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - T-S Zhao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - M-B Meng
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - L-J Zhao
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - J-H Hao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - P Wang
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - D Xie
- State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou, China
| | - B Lu
- 1] Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China [2] Department of Radiation Oncology, Bodine Cancer Center, Thomas Jefferson University School of Medicine, Philadelphia, PA, USA
| | - Z-Y Yuan
- Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
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Yan F, Shen N, Pang J, Xie D, Deng B, Molina JR, Yang P, Liu S. Restoration of miR-101 suppresses lung tumorigenesis through inhibition of DNMT3a-dependent DNA methylation. Cell Death Dis 2014; 5:e1413. [PMID: 25210796 PMCID: PMC4540207 DOI: 10.1038/cddis.2014.380] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 07/09/2014] [Accepted: 07/29/2014] [Indexed: 12/18/2022]
Abstract
The deregulation of miR-101 and DNMT3a has been implicated in the pathogenesis of multiple tumor types, but whether and how miR-101 silencing and DNMT3a overexpression contribute to lung tumorigenesis remain elusive. Here we show that miR-101 downregulation associates with DNMT3a overexpression in lung cancer cell lines and patient tissues. Ectopic miR-101 expression remarkably abrogated the DNMT3a 3′-UTR luciferase activity corresponding to the miR-101 binding site and caused an attenuated expression of endogenous DNMT3a, which led to a reduction of global DNA methylation and the re-expression of tumor suppressor CDH1 via its promoter DNA hypomethylation. Functionally, restoration of miR-101 expression suppressed lung cancer cell clonability and migration, which recapitulated the DNMT3a knockdown effects. Interestingly, miR-101 synergized with decitabine to downregulate DNMT3a and to reduce DNA methylation. Importantly, ectopic miR-101 expression was sufficient to trigger in vivo lung tumor regression and the blockage of metastasis. Consistent with these phenotypes, examination of xenograft tumors disclosed an increase of miR-101, a decrease of DNMT3a and the subsequent DNA demethylation. These findings support that the loss or suppression of miR-101 function accelerates lung tumorigenesis through DNMT3a-dependent DNA methylation, and suggest that miR-101-DNMT3a axis may have therapeutic value in treating refractory lung cancer.
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Affiliation(s)
- F Yan
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN 55912, USA
| | - N Shen
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN 55912, USA
| | - J Pang
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN 55912, USA
| | - D Xie
- Division of Epidemiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - B Deng
- Division of Epidemiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - J R Molina
- Division of Medical Oncology, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - P Yang
- Division of Epidemiology, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - S Liu
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN 55912, USA
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Zhang JX, Mai SJ, Huang XX, Wang FW, Liao YJ, Lin MC, Kung HF, Zeng YX, Xie D. MiR-29c mediates epithelial-to-mesenchymal transition in human colorectal carcinoma metastasis via PTP4A and GNA13 regulation of β-catenin signaling. Ann Oncol 2014; 25:2196-2204. [PMID: 25193986 DOI: 10.1093/annonc/mdu439] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Distant metastasis is the major cause of cancer-related death, and epithelial-to-mesenchymal transition (EMT) has a critical role in this process. Accumulating evidence indicates that EMT can be regulated by microRNAs (miRNAs). miR-29c has been implicated as a tumor suppressor in several human cancers. However, the role of miR-29c in the progression of colorectal cancer (CRC) metastasis remains largely unknown. PATIENTS AND METHODS The expression of miR-29c was examined by qRT-PCR in a cohort of primary CRC (PC) and distant liver metastasis (LM) tissues. A series of in vivo and in vitro assays were carried out in order to elucidate the functions of miR-29c and the molecular mechanisms underlying the pathogenesis of metastatic CRC. RESULTS miR-29c was markedly downregulated in PCs with distant metastasis and determined to be an independent predictor of shortened patient survival. But LM tissues showed higher levels of miR-29c than that in PC tissues. In CRC cells, miR-29c dramatically suppressed cell migration and invasion abilities in vitro and cancer metastasis in vivo. In addition, miR-29c inhibited EMT and negatively regulated Wnt/β-catenin signaling pathway. Guanine nucleotide binding protein alpha13 (GNA13) and protein tyrosine phosphatase type IVA (PTP4A) were identified as direct targets of miR-29c, which acted through ERK/GSK3β/β-catenin and AKT/GSK3β/β-catenin pathways, respectively, to regulate EMT. Furthermore, significant associations between miR-29c, its target genes (GNA13 and PTP4A) and EMT markers were validated in both PC and LM tissues. CONCLUSION Our findings highlight the important role of miR-29c in regulating CRC EMT via GSK-3β/β-catenin signaling by targeting GNA13 and PTP4A and provide new insights into the metastatic basis of CRC.
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Affiliation(s)
- J X Zhang
- The State Key Laboratory of Oncology in South China; Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou
| | - S J Mai
- The State Key Laboratory of Oncology in South China
| | - X X Huang
- The State Key Laboratory of Oncology in South China
| | - F W Wang
- The State Key Laboratory of Oncology in South China
| | - Y J Liao
- The State Key Laboratory of Oncology in South China
| | - M C Lin
- The State Key Laboratory of Oncology in South China, The Chinese University of Hong Kong, Hong Kong, China
| | - H F Kung
- The State Key Laboratory of Oncology in South China; The State Key Laboratory of Oncology in South China, The Chinese University of Hong Kong, Hong Kong, China
| | - Y X Zeng
- The State Key Laboratory of Oncology in South China
| | - D Xie
- The State Key Laboratory of Oncology in South China; Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou.
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87
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Abstract
We have developed a novel glass-ionomer cement (GIC) system composed of photo-curable star-shaped poly(acrylic acid-co-itaconic acid)s. These polyacids were synthesized via a chain-transfer radical polymerization using a newly synthesized multi-arm chain-transfer agent. The star-shaped polyacids showed significantly lower viscosities in water as compared to the linear polyacids. Due to the lower viscosities, the molecular weight (MW) of the polyacids can be significantly increased for enhancing the mechanical strengths while keeping the ease of mixing and handling. The effects of MW, GM-tethering ratio, P/L ratio, and aging on the compressive properties of the experimental cements were significant. The light-cured experimental cements showed significantly improved mechanical strengths i.e. 49% in yield strength, 41% in modulus, 25% in CS, 20% in DTS, and 36% in FS, higher than commercial Fuji II LC. After aging in water for 1 month, the compressive strength of the novel light-cured experimental cement reached 343 MPa, which was 34% and 42% higher than Fuji II and Fuji II LC, respectively. This one-month aged experimental cement was also 23% higher than itself after one day aging, indicating that aging in water can significantly enhance salt-bridge formation for this novel star-shaped polyacid-comprised GIC.
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Affiliation(s)
- Y Weng
- a Department of Biomedical Engineering , Purdue School of Engineering and Technology , Indiana University-Purdue University at Indianapolis , Indianapolis , IN 46202 , USA
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88
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Wei JH, Cao JZ, Zhang D, Liao B, Zhong WM, Lu J, Zhao HW, Zhang JX, Tong ZT, Fan S, Liang CZ, Liao YB, Pang J, Wu RH, Fang Y, Chen ZH, Li B, Xie D, Chen W, Luo JH. EIF5A2 predicts outcome in localised invasive bladder cancer and promotes bladder cancer cell aggressiveness in vitro and in vivo. Br J Cancer 2014; 110:1767-77. [PMID: 24504366 PMCID: PMC3974079 DOI: 10.1038/bjc.2014.52] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 11/19/2013] [Accepted: 01/10/2014] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND EIF5A2, eukaryotic translation initiation factor 5A2, is associated with several human cancers. In this study, we investigated the role of EIF5A2 in the metastatic potential of localised invasive bladder cancer (BC) and its underlying molecular mechanisms were explored. METHODS The expression pattern of EIF5A2 in localised invasive BC was determined by immunohistochemistry. In addition, the function of EIF5A2 in BC and its underlying mechanisms were elucidated with a series of in vitro and in vivo assays. RESULTS Overexpression of EIF5A2 was an independent predictor for poor metastasis-free survival of localised invasive BC patients treated with radical cystectomy. Knockdown of EIF5A2 inhibited BC cell migratory and invasive capacities in vitro and metastatic potential in vivo and reversed epithelial-mesenchymal transition (EMT), whereas overexpression of EIF5A2 promoted BC cells motility and invasiveness in vitro and metastatic potential in vivo and induced EMT. In addition, we found that EIF5A2 might activate TGF-β1 expression to induce EMT and drive aggressiveness in BC cells. EIF5A2 stabilized STAT3 and stimulated nuclear localisation of STAT3, which resulted in increasing enrichment of STAT3 onto TGF-β1 promoter to enhance the transcription of TGF-β1. CONCLUSIONS EIF5A2 overexpression predicts tumour metastatic potential in patients with localised invasive BC treated with radical cystectomy. Furthermore, EIF5A2 elevated TGF-β1 expression through STAT3 to induce EMT and promotes aggressiveness in BC.
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Affiliation(s)
- J-H Wei
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - J-Z Cao
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen, China
| | - D Zhang
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - B Liao
- Department of Pathology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - W-M Zhong
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - J Lu
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen, China
| | - H-W Zhao
- Department of Urology, Yuhuangding Hospital, Qingdao University Medical College, Yantai, China
| | - J-X Zhang
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Z-T Tong
- Department of Urology, First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - S Fan
- Department of Urology, First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - C-Z Liang
- Department of Urology, First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Y-B Liao
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen, China
| | - J Pang
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen, China
| | - R-H Wu
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen, China
| | - Y Fang
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Z-H Chen
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - B Li
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - D Xie
- State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou, China
| | - W Chen
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - J-H Luo
- Department of Urology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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Liao YJ, Bai HY, Li ZH, Zou J, Chen JW, Zheng F, Zhang JX, Mai SJ, Zeng MS, Sun HD, Pu JX, Xie D. Longikaurin A, a natural ent-kaurane, induces G2/M phase arrest via downregulation of Skp2 and apoptosis induction through ROS/JNK/c-Jun pathway in hepatocellular carcinoma cells. Cell Death Dis 2014; 5:e1137. [PMID: 24651440 PMCID: PMC3973226 DOI: 10.1038/cddis.2014.66] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/15/2014] [Accepted: 01/27/2014] [Indexed: 12/26/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common form of primary liver cancer, and is also highly resistant to conventional chemotherapy treatments. In this study, we report that Longikaurin A (LK-A), an ent-kaurane diterpenoid isolated from the plant Isodon ternifolius, induced cell cycle arrest and apoptosis in human HCC cell lines. LK-A also suppressed tumor growth in SMMC-7721 xenograft models, without inducing any notable major organ-related toxicity. LK-A treatment led to reduced expression of the proto-oncogene S phase kinase-associated protein 2 (Skp2) in SMMC-7721 cells. Lower Skp2 levels correlated with increased expression of p21 and p-cdc2 (Try15), and a corresponding decrease in protein levels of Cyclin B1 and cdc2. Overexpression of Skp2 significantly inhibited LK-A-induced cell cycle arrest in SMMC-7721 cells, suggesting that LK-A may target Skp2 to arrest cells at the G2/M phase. LK-A also induced reactive oxygen species (ROS) production and apoptosis in SMMC-7721 cells. LK-A induced phosphorylation of c-Jun N-terminal kinase (JNK), but not extracellular signal-regulated kinase and P38 MAP kinase. Treatment with, the JNK inhibitor SP600125 prevented LK-A-induced apoptosis in SMMC-7721 cells. Moreover, the antioxidant N-acetylcysteine prevented phosphorylation of both JNK and c-Jun. Taken together, these data indicate that LK-A induces cell cycle arrest and apoptosis in cancer cells by dampening Skp2 expression, and thereby activating the ROS/JNK/c-Jun signaling pathways. LK-A is therefore a potential lead compound for development of antitumor drugs targeting HCC.
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Affiliation(s)
- Y-J Liao
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H-Y Bai
- 1] Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China [2] Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Z-H Li
- Department of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - J Zou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - J-W Chen
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - F Zheng
- Medical Research Center, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - J-X Zhang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - S-J Mai
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - M-S Zeng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H-D Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - J-X Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - D Xie
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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90
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Benitez JY, Franzen KY, Hodgkinson A, Lyneis CM, Strohmeier M, Thullier T, Todd D, Xie D. Production of high intensity 48Ca for the 88-Inch Cyclotron and other updates. Rev Sci Instrum 2014; 85:02A961. [PMID: 24593540 DOI: 10.1063/1.4854896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Recently the Versatile ECR for NUclear Science (VENUS) ion source was engaged in a 60-day long campaign to deliver high intensity (48)Ca(11+) beam to the 88-Inch Cyclotron. As the first long term use of VENUS for multi-week heavy-element research, new methods were developed to maximize oven to target efficiency. First, the tuning parameters of VENUS for injection into the cyclotron proved to be very different than those used to tune VENUS for maximum beam output of the desired charge state immediately following its bending magnet. Second, helium with no oxygen support gas was used to maximize the efficiency. The performance of VENUS and its low temperature oven used to produce the stable requested 75 eμA of (48)Ca(11+) beam current was impressive. The consumption of (48)Ca in VENUS using the low temperature oven was checked roughly weekly, and was found to be on average 0.27 mg/h with an ionization efficiency into the 11+ charge state of 5.0%. No degradation in performance was noted over time. In addition, with the successful operation of VENUS the 88-Inch cyclotron was able to extract a record 2 pμA of (48)Ca(11+), with a VENUS output beam current of 219 eμA. The paper describes the characteristics of the VENUS tune used for maximum transport efficiency into the cyclotron as well as ongoing efforts to improve the transport efficiency from VENUS into the cyclotron. In addition, we briefly present details regarding the recent successful repair of the cryostat vacuum system.
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Affiliation(s)
- J Y Benitez
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - K Y Franzen
- Mevion Medical Systems, 300 Foster St., Littleton, Massachusetts 01460, USA
| | - A Hodgkinson
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C M Lyneis
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M Strohmeier
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - T Thullier
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Todd
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Xie
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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91
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Sun L, Lu W, Feng YC, Zhang WH, Zhang XZ, Cao Y, Zhao YY, Wu W, Yang TJ, Zhao B, Zhao HW, Ma LZ, Xia JW, Xie D. Progress of superconducting electron cyclotron resonance ion sources at Institute of Modern Physics (IMP). Rev Sci Instrum 2014; 85:02A942. [PMID: 24593521 DOI: 10.1063/1.4825164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Superconducting ECR ion sources can produce intense highly charged ion beams for the application in heavy ion accelerators. Superconducting Electron Resonance ion source with Advanced Design (SECRAL) is one of the few fully superconducting ECR ion sources that has been successfully built and put into routine operation for years. With enormous efforts and R&D work, promising results have been achieved with the ion source. Heated by the microwave power from a 7 kW/24 GHz gyrotron microwave generator, very intense highly charged gaseous ion beams have been produced, such as 455 eμA Xe(27+), 236 eμA Xe(30+), and 64 eμA Xe(35+). Since heavy metallic ion beams are being more and more attractive and important for many accelerator projects globally, intensive studies have been made to produce highly charged heavy metal ion beams, such as those from bismuth and uranium. Recently, 420 eμA Bi(30+) and 202 eμA U(33+) have been produced with SECRAL source. This paper will present the latest results with SECRAL, and the operation status will be discussed as well. An introduction of recently started SECRAL II project will also be given in the presentation.
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Affiliation(s)
- L Sun
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - W Lu
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - Y C Feng
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - W H Zhang
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - X Z Zhang
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - Y Cao
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - Y Y Zhao
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - W Wu
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - T J Yang
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - B Zhao
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - H W Zhao
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - L Z Ma
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - J W Xia
- Institute of Modern Physics, CAS, Lanzhou 730000, China
| | - D Xie
- Nuclear Science Division, LBNL, Berkeley, California 94720, USA
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92
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Clark SP, Bollag WB, Westlund KN, Ma F, Falls G, Xie D, Johnson M, Isales CM, Bhattacharyya MH. Pine oil effects on chemical and thermal injury in mice and cultured mouse dorsal root ganglion neurons. Phytother Res 2014; 28:252-60. [PMID: 23595692 PMCID: PMC4086883 DOI: 10.1002/ptr.4991] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 03/06/2013] [Accepted: 03/08/2013] [Indexed: 11/11/2022]
Abstract
A commercial resin-based pine oil (PO) derived from Pinus palustris and Pinus elliottii was the major focus of this investigation. Extracts of pine resins, needles, and bark are folk medicines commonly used to treat skin ailments, including burns. The American Burn Association estimates that 500,000 people with burn injuries receive medical treatment each year; one-half of US burn victims are children, most with scald burns. This systematic study was initiated as follow-up to personal anecdotal evidence acquired over more than 10 years by MH Bhattacharyya regarding PO's efficacy for treating burns. The results demonstrate that PO counteracted dermal inflammation in both a mouse ear model of contact irritant-induced dermal inflammation and a second degree scald burn to the mouse paw. Furthermore, PO significantly counteracted the tactile allodynia and soft tissue injury caused by the scald burn. In mouse dorsal root ganglion neuronal cultures, PO added to the medium blocked adenosine triphosphate-activated, but not capsaicin-activated, pain pathways, demonstrating specificity. These results together support the hypothesis that a pine-oil-based treatment can be developed to provide effective in-home care for second degree burns.
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Affiliation(s)
- S P Clark
- Medical College of Georgia, Georgia Regents University, Augusta, GA, USA
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93
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Su RN, Guo YD, Xie D, Peng YL, Cai JF, Hua F, Sheng LH. Identification of forensically important beetles (Coleoptera: Histeridae) in China based on 16S rRNA and Cyt b. Trop Biomed 2013; 30:375-387. [PMID: 24189669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Exact identification of an insect sample is usually the first essential step in a forensic entomological analysis. However, the morphological similarity of beetles in the level of species usually poses a challenge for forensic scientists within their routine work. As a supplementary to traditional morphological method, molecular genetics identification turns out to be simple and time-saving. A molecular identification method involving a 288-bp segment of the 16S ribosomal RNA (16S rRNA) gene and a 334-bp segment of the cytochrome b (Cyt b) gene from 23 histerid beetles specimens, collected from 7 locations in 6 Chinese provinces, was evaluated. The 16S rRNA and Cyt b genes are sequenced to examine the ability of the region, resolve species identities and enrich the local databases. The monophyletic branches of the phylogenetic tree showed the potential of the markers in identifying beetles within families. Combined analysis is a more accurate approach for species identication than independent analysis.
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Affiliation(s)
- R N Su
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan, China
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94
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Wei K, Lin Y, Xie D. Evolutionary and Ecological Dynamics of Transboundary Disease Caused by H5N1 Virus in Southeast Asia. Transbound Emerg Dis 2013; 62:315-27. [PMID: 23952973 DOI: 10.1111/tbed.12147] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Indexed: 01/03/2023]
Abstract
Southeast Asia has been the breeding ground for many emerging diseases in the past decade, and it is in this region that new genetic variants of HPAI H5N1 viruses have been emerging. Cross-border movement of animals accelerates the spread of H5N1, and the changing environmental conditions also exert strong selective pressure on the viruses. The transboundary zoonotic diseases caused by H5N1 pose a serious and continual threat to global economy and public health. Here, we divided the H5N1 viruses isolated in Southeast Asia during 2003-2009 into four groups according to their phylogenetic relationships among HA gene sequences. Molecular evolution analysis suggests populations in expansion rather than a positive selection for group 2 and group 3, yet group 4 is under strong positive selection. Site 193 was found to be a potential glycosylation site and located in receptor-binding domain. Note that site 193 tends to appear in avian isolates instead of human strains. Population dynamics analysis reveals that the effective population size of infections in Southeast Asia has undergone three obvious increases, and the results are consistent with the epidemiological analysis. Ecological and phylogeographical analyses show that agro-ecological environments, migratory birds, domestic waterfowl, especially free-ranging ducks, are crucial in the occurrence, maintenance and spread of H5N1 virus. The epidemiological links between Indonesia and Suphanburi observed suggest that viruses in Indonesia were originated from multiple introductions.
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Affiliation(s)
- K Wei
- Department of Biological Sciences and Biotechnology, Minnan Normal University, Zhangzhou, China
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96
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Chen B, Li Y, Yang X, Xu H, Xie D. Zoledronic acid enhances bone-implant osseointegration more than alendronate and strontium ranelate in ovariectomized rats. Osteoporos Int 2013; 24:2115-21. [PMID: 23389695 DOI: 10.1007/s00198-013-2288-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 01/03/2013] [Indexed: 01/17/2023]
Abstract
UNLABELLED This study was designed to compare the effects of alendronate (ALN), strontium ranelate (SR), and zoledronic acid (ZOL) on bone-implant osseointegration in ovariectomized rats. Histological examination and biomechanical tests show that ZOL, ALN, and SR enhance bone-implant osseointegration; ALN and SR have similar effects, while ZOL enhances bone-implant osseointegration more than ALN and SR INTRODUCTION: This study aims to compare the effects of ALN, SR, and ZOL on bone-implant osseointegration in ovariectomized rats. METHODS Sixty female Sprague-Dawley rats were included in this study. Of them, 48 rats were ovariectomized (OVX) and assigned to four groups: OVX (OVX + Veh), ALN (OVX + ALN), SR (OVX + SR), and ZOL (OVX + ZOL). And another 12 rats were sham-operated as a control group (Sham). Four weeks after ovariectomy, HA-coated titanium implants were inserted into the tibias bilaterally in all rats. Then the rats in groups ALN, SR, and ZOL were systemically administrated with alendronate (7 mg/kg/week, orally), strontium ranelate (500 mg/kg/day, orally), or a single injection of zoledronic acid (0.1 mg/kg, iv), respectively. Twelve weeks after implantation, all rats were sacrificed to get the femurs and tibias. Histological examination and biomechanical tests were used to evaluate bone-implant osseointegration in all groups. RESULTS ALN, SR, and ZOL significantly increased distal femoral BMD when compared with group OVX; ZOL increased BMD significantly more than ALN and SR (P < 0.05). Significant increase of bone-to-implant contact and peri-implant bone fraction were observed in groups ALN, SR, and ZOL when compared with group OVX (P < 0.05). Groups ALN and SR were inferior to groups ZOL and Sham (P < 0.05) in bone-to-implant contact and peri-implant bone fraction. Similar results were found in biomechanical testing (max pushout force). CONCLUSIONS In rats losing bone rapidly after ovariectomy, systemic administration of ZOL, ALN, and SR causes better bone-implant osseointegration when compared to OVX; ALN and SR have similar positive effects on osseointegration, while ZOL, that was given in a dose with more positive BMD effect than that of ALN or SR, causes better osseointegration than either ALN or SR.
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Affiliation(s)
- B Chen
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China.
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97
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Wu K, Liu J, Tseng SF, Gore C, Ning Z, Sharifi N, Fazli L, Gleave M, Kapur P, Xiao G, Sun X, Oz OK, Min W, Alexandrakis G, Yang CR, Hsieh CL, Wu HC, He D, Xie D, Hsieh JT. The role of DAB2IP in androgen receptor activation during prostate cancer progression. Oncogene 2013; 33:1954-63. [PMID: 23604126 DOI: 10.1038/onc.2013.143] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Revised: 01/30/2013] [Accepted: 02/26/2013] [Indexed: 11/09/2022]
Abstract
Altered androgen-receptor (AR) expression and/or constitutively active AR are commonly associated with prostate cancer (PCa) progression. Targeting AR remains a focal point for designing new strategy of PCa therapy. Here, we have shown that DAB2IP, a novel tumor suppressor in PCa, can inhibit AR-mediated cell growth and gene activation in PCa cells via distinct mechanisms. DAB2IP inhibits the genomic pathway by preventing AR nuclear translocation or phosphorylation and suppresses the non-genomic pathway via its unique functional domain to inactivate c-Src. Also, DAB2IP is capable of suppressing AR activation in an androgen-independent manner. In addition, DAB2IP can inhibit several AR splice variants showing constitutive activity in PCa cells. In DAB2IP(-/-) mice, the prostate gland exhibits hyperplastic epithelia, in which AR becomes more active. Consistently, DAB2IP expression inversely correlates with AR activation status particularly in recurrent or metastatic PCa patients. Taken together, DAB2IP is a unique intrinsic AR modulator in normal cells, and likely can be further developed into a therapeutic agent for PCa.
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Affiliation(s)
- K Wu
- 1] Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA [2] Department of Urology, The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - J Liu
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - S-F Tseng
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - C Gore
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Z Ning
- Department of Urology, The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - N Sharifi
- Division of Hematology/Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - L Fazli
- Vancouver Prostate Center, University of British Columbia, Vancouver, British Columbia, Canada
| | - M Gleave
- Vancouver Prostate Center, University of British Columbia, Vancouver, British Columbia, Canada
| | - P Kapur
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - G Xiao
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - X Sun
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - O K Oz
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - W Min
- Interdepartmental Program in Vascular Biology and Transplantation and Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - G Alexandrakis
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - C-R Yang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - C-L Hsieh
- 1] Graduate Institute of Cancer Biology, China Medical University Hospital, Taichung, Taiwan [2] Center for Molecular Medicine, China Medical University Hospital, Taichung, Taiwan [3] Department of Biotechnology, Asia University, Taichung, Taiwan
| | - H-C Wu
- 1] Department of Urology, China Medical University Hospital, Taichung, Taiwan [2] School of Medicine, China Medical University, Taichung, Taiwan
| | - D He
- Department of Urology, The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - D Xie
- Department of General Surgery, Tongji Cancer Research Institute, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - J-T Hsieh
- 1] Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA [2] Graduate Institute of Cancer Biology, China Medical University Hospital, Taichung, Taiwan
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98
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Duan L, You Q, Chen X, Wang H, Zhang H, Xie D, Xu X, Jiang G. Outcome and prognosis for patients younger than thirty with primary lung cancer. MINERVA CHIR 2013; 68:175-182. [PMID: 23612231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM Aim of the present study was to investigate the clinical and pathological features of surgical treatment for primary bronchogenic carcinoma in adolescent patients. PATIENTS We retrospectively reviewed the clinico-pathological records documenting surgical outcomes and prognostic factors in 68 lung cancer patients aged less than 30 years old enrolled in our hospital between March 1980 and December 2009. RESULTS Sixty-eight patients were identified (38 male, 30 female) with a mean age of 22±5 years (range 8 to 29 years). Preoperative clinical manifestations were present in 82.4% (56/68) of the patients and 26.5% (16/68) of patients were initially misdiagnosed. Fifty-two patients had undergone radical surgery, 4 palliative surgery, 9 had exploratory thoracotomies, and 3 had thoracoscopic lung biopsies. Eight patients were classified (TNM) stage Ia, 7 stage Ib, 9 stage IIa, 13 stage IIb, 17 stage IIIa, 10 stage IIIb, and 4 stage IV. Postoperative atelectasis was observed in 4.41% (3/68) of the patients, and 1.47% (1/68) died of respiratory failure 5 days after exploratory thoracotomy. The overall 5-year survival rate in very young people was 31%, while those who underwent radical surgery was slightly higher at 36.7%. Five-year survival rates were correlated with the surgical procedures and pTNM stage (P <0.05). Multivariate analysis indicated that the TNM stage is the only independent prognostic factor (P=0.000). CONCLUSION We conclude that radical surgeries, the predominant comprehensive therapies are the best choice for primary lung cancer patients younger than 30 years of age.
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Affiliation(s)
- L Duan
- Department of Thoracic Surgery, Tongji University School of Medicine Shanghai, China.
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99
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Zhong R, Liu L, Zou L, Sheng W, Zhu B, Xiang H, Chen W, Chen J, Rui R, Zheng X, Yin J, Duan S, Yang B, Sun J, Lou J, Liu L, Xie D, Xu Y, Nie S, Miao X. Genetic variations in the TGF signaling pathway, smoking and risk of colorectal cancer in a Chinese population. Carcinogenesis 2012; 34:936-42. [DOI: 10.1093/carcin/bgs395] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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100
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Polanco VDP, Branas CC, Soto VAL, Xie D. The relationship between violence and mental illnesses in Guatemala. Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040590j.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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