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Peng QX, Zhang QL, Gao JH. [The achievement of integrated medicine & the model of creative discipline--on the essential character and discipline classification of modern aesthetic medicine]. Zhonghua Yi Xue Za Zhi 2016; 96:3862-3865. [PMID: 28057153 DOI: 10.3760/cma.j.issn.0376-2491.2016.48.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Cai LM, Lyu XM, Luo WR, Cui XF, Ye YF, Yuan CC, Peng QX, Wu DH, Liu TF, Wang E, Marincola FM, Yao KT, Fang WY, Cai HB, Li X. EBV-miR-BART7-3p promotes the EMT and metastasis of nasopharyngeal carcinoma cells by suppressing the tumor suppressor PTEN. Oncogene 2015; 34:2156-66. [PMID: 25347742 DOI: 10.1038/onc.2014.341] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [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: 02/05/2014] [Revised: 07/01/2014] [Accepted: 09/12/2014] [Indexed: 02/07/2023]
Abstract
The epithelial-mesenchymal transition (EMT) is crucial to cancer progression and metastasis. Although multiple cellular miRNAs have been identified to regulate the EMT and metastasis in cancers, the role of viral miRNAs in cancer progression remains largely unknown. Nasopharyngeal carcinoma (NPC) is an Epstein-Barr virus (EBV)-associated malignancy typically characterized by its early metastasis. In the present study, we have discovered the involvement of a viral miRNA, EBV-miR-BART7-3p, in the EMT and metastasis of NPC cells. Initially, we observed that EBV-miR-BART7-3p was highly expressed in NPC and positively correlated with lymph node metastasis and clinical stage of NPC. Subsequently, we demonstrated that EBV-miR-BART7-3p enhanced cell migration/invasion in vitro, cancer metastasis in vivo, and particularly the EMT characterized by loss of epithelial markers and gain of mesenchymal features in NPC cells. Furthermore, mechanistic studies disclosed that EBV-miR-BART7-3p targeted a major human tumor suppressor PTEN, modulating PI3K/Akt/GSK-3β signaling and eventually leading to the high expression and nuclear accumulation of Snail and β-catenin, which favor EMT. Knockdown of PTEN could phenocopy the effect of EBV-miR-BART7-3p, whereas re-expression of PTEN resulted in a phenotypic reversion. Moreover, these findings were supported by an observation of an EBV-positive cell model in which silencing of endogenous EBV-miR-BART7-3p partially attenuated cell migration/invasion and altered EMT protein expression pattern via reverting PI3K/Akt, Snail and β-catenin expression. Thus, this study suggests a novel mechanism by which EBV-miR-BART7-3p modulates the EMT and metastasis of NPC cells, and a clinical implication of EBV-miR-BART7-3p as a potential biomarker or therapeutic target.
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Affiliation(s)
- L-M Cai
- Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - X-M Lyu
- 1] Cancer Research Institute, Southern Medical University, Guangzhou, China [2] Department of Laboratory Medicine, the Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - W-R Luo
- Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - X-F Cui
- Department of ENT, 463 Hospital of the Chinese PLA, Shenyang, China
| | - Y-F Ye
- Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - C-C Yuan
- Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - Q-X Peng
- School of Chinese Traditional Medicine, Southern Medical University, Guangzhou, China
| | - D-H Wu
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - T-F Liu
- Department of Pathology, Southern Medical University, Guangzhou, China
| | - E Wang
- Infectious Diseases and Immunogenetics Section, DTM, Clinical Center, the National Institutes of Health, Bethesda, MD, USA
| | - F-M Marincola
- Infectious Diseases and Immunogenetics Section, DTM, Clinical Center, the National Institutes of Health, Bethesda, MD, USA
| | - K-T Yao
- Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - W-Y Fang
- Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - H-B Cai
- School of Chinese Traditional Medicine, Southern Medical University, Guangzhou, China
| | - X Li
- Cancer Research Institute, Southern Medical University, Guangzhou, China
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Abstract
OBJECTIVE Computer Aided Drug DESIGNing is fast becoming an important tool in Drug discovery, and in the field of anesthetic drug development we are the first to use in silico approaches to look for novel anesthetic compounds. DESIGN The approach of molecular modeling, Virtual screening, Drug-likeness, molecular docking and molecular dynamics simulations (MDS) was employed for this study. RESULT Our approach of virtual screening Drug-likeness, adsorption, distribution, metabolism, excretion and toxicity analysis of around 50 000 compounds from Inter Bio Screen (IBS) Database have given us top 5 Lead compounds against ASN289 of γ-aminobutyric acid (GABAA) receptor, a common target of known anesthetic compounds. Out of the top 5 Lead compounds one (Lead 5) was selected for further MDS analysis based on its Binding free energy and number of physical interactions with GABAA. CONCLUSION The MDS analysis of Lead 5 reveals the complex to be stable and thus suitable for further in vitro and in vivo analysis.
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Affiliation(s)
- Q-X Peng
- Department of Anesthesiology, The First Hospital of Changsha, Changsha, China
| | - X-H Guan
- Department of Anesthesiology, The First Hospital of Changsha, Changsha, China
| | - Z-G Yi
- Department of Anesthesiology, The First Hospital of Changsha, Changsha, China
| | - Y-P Su
- Department of Anesthesiology, The First Hospital of Changsha, Changsha, China
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Liu HC, Yin QZ, Ye MJ, Zhang CW, Liao J, Peng QX. [A serological survey of Legionnaires' disease in domestic fowls and animals in Chengdu area]. Hua Xi Yi Ke Da Xue Xue Bao 1989; 20:441-4. [PMID: 2630424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A serological survey of antibodies against Legionella pneumophila (Lp) serotypes in Chengdu area by microagglutination test showed that there were high levels of antibodies against serotypes Lp1 and Lp6 in healthy domestic fowls and animals (rabbits, pigs, chickens, ducks and geese). In rabbits, antibodies against serotypes Lp1-Lp6 were determined, showing positive rates (titer greater than or equal to 1:16) ranging 6.3-23.8%. Among them only the serotype Lp3 did not show any positive one. The highest positive rate was observed in pigs' anti-Lp6 (89.8%), significantly higher than those reported in America, Denmark and Nanjing, China. The results suggested that recessive infections of Legionnaires' Disease Bacterium might occur in domestic fowls and animals. So the epidemiological surveillance of Legionnaires' disease in animals, as well as in environment (water and soil) is of importance for the prevention in man.
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