101
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Wu W, Shi WW, Huang Y, Gu H, Wang J, Feng W. Spectrophotometric determination of trace nitrite with a novel self-coupling diazotizing reagent: J-Acid. J WATER CHEM TECHNO+ 2016. [DOI: 10.3103/s1063455x15060077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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102
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Li H, Peng W, Feng W, Wang Y, Chen G, Wang S, Li S, Li H, Wang K, Zhang J. A novel dual-emission fluorescent probe for the simultaneous detection of H2S and GSH. Chem Commun (Camb) 2016; 52:4628-31. [DOI: 10.1039/c6cc00973e] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel chlorinated coumarin–malononitrile fluorescent probe was synthesized for the simultaneous detection of H2S and GSH from different emission channels.
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103
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Zhang Q, Fu X, Feng W, Cai X, Yu W. Risk Factors of Brain Metastases as Initial Failure for Completely Resected Stage IIIA (N2) Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1563] [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: 11/30/2022]
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104
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Xu Y, Bhatnagar J, Bednarz G, Flickinger J, Arai Y, Vacsulka J, Feng W, Monaco E, Niranjan A, Lunsford L, Huq M. Failure Modes and Effects Analysis (FMEA): Based Quality Management Program for Stereotactic Radiosurgery. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1821] [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: 10/22/2022]
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105
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Yong X, Hu T, Feng S, Du X, Shi H, Feng W. Synergism in Pharmacokinetics of Retagliptin and Metformin Observed during Clinical Trials of their Combination Therapy. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i8.22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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106
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Carrillo‐Sánchez JD, Plane JMC, Feng W, Nesvorný D, Janches D. On the size and velocity distribution of cosmic dust particles entering the atmosphere. Geophys Res Lett 2015; 42:6518-6525. [PMID: 27478282 PMCID: PMC4950038 DOI: 10.1002/2015gl065149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 07/22/2015] [Accepted: 07/22/2015] [Indexed: 05/27/2023]
Abstract
The size and velocity distribution of cosmic dust particles entering the Earth's atmosphere is uncertain. Here we show that the relative concentrations of metal atoms in the upper mesosphere, and the surface accretion rate of cosmic spherules, provide sensitive probes of this distribution. Three cosmic dust models are selected as case studies: two are astronomical models, the first constrained by infrared observations of the Zodiacal Dust Cloud and the second by radar observations of meteor head echoes; the third model is based on measurements made with a spaceborne dust detector. For each model, a Monte Carlo sampling method combined with a chemical ablation model is used to predict the ablation rates of Na, K, Fe, Mg, and Ca above 60 km and cosmic spherule production rate. It appears that a significant fraction of the cosmic dust consists of small (<5 µg) and slow (<15 km s-1) particles.
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Affiliation(s)
| | | | - W. Feng
- School of ChemistryUniversity of LeedsLeedsUK
- National Centre for Atmospheric ScienceUniversity of LeedsLeedsUK
| | - D. Nesvorný
- Department of Space StudiesSouthwest Research InstituteBoulderColoradoUSA
| | - D. Janches
- Space Weather LaboratoryGSFC/NASAGreenbeltMarylandUSA
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107
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Dawkins ECM, Plane JMC, Chipperfield MP, Feng W. The near-global mesospheric potassium layer: Observations and modeling. J Geophys Res Atmos 2015; 120:7975-7987. [PMID: 27478716 PMCID: PMC4949710 DOI: 10.1002/2015jd023212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 06/30/2015] [Accepted: 07/06/2015] [Indexed: 06/06/2023]
Abstract
The meteoric metal layers act as unique tracers of chemistry and dynamics in the upper atmosphere. Existing lidar studies from a few locations show that K exhibits a semiannual seasonality (winter and summer maxima), quite unlike the annual seasonality (winter maximum and summer minimum) seen with Na and Fe. This work uses spaceborne observations made with the Optical Spectrograph and InfraRed Imager System instrument on the Odin satellite to retrieve the near-global K layer for the first time. The satellite data (2004 to mid-2013) are used to validate the implementation of a recently proposed potassium chemistry scheme in a whole atmosphere chemistry climate model, which provides a chemical basis for this semiannual seasonal behavior. The satellite and model data show that this semiannual seasonality is near global in extent, with the strongest variation at middle and high latitudes. The column abundance, centroid layer height, and root-mean-square width of the K layer are consistent with the limited available lidar record. The K data set is then used to investigate the impact of polar mesospheric clouds on the metal layers at high latitudes during summer. Finally, the occurrence frequency of sporadic K layers and their possible link to sporadic E layers are examined.
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Affiliation(s)
- E. C. M. Dawkins
- School of ChemistryUniversity of LeedsLeedsUK
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | | | | | - W. Feng
- School of ChemistryUniversity of LeedsLeedsUK
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
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108
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Xu Y, Bhatnagar J, Bednarz G, Flickinger J, Arai Y, Vacsulka J, Feng W, Monaco E, Niranjan A, Lunsford LD, Huq MS. WE-G-BRA-08: Failure Modes and Effects Analysis (FMEA) for Gamma Knife Radiosurgery. Med Phys 2015. [DOI: 10.1118/1.4926078] [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: 11/07/2022] Open
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109
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Hossaini R, Chipperfield MP, Saiz‐Lopez A, Harrison JJ, von Glasow R, Sommariva R, Atlas E, Navarro M, Montzka SA, Feng W, Dhomse S, Harth C, Mühle J, Lunder C, O'Doherty S, Young D, Reimann S, Vollmer MK, Krummel PB, Bernath PF. Growth in stratospheric chlorine from short-lived chemicals not controlled by the Montreal Protocol. Geophys Res Lett 2015; 42:4573-4580. [PMID: 27570318 PMCID: PMC4981078 DOI: 10.1002/2015gl063783] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 04/27/2015] [Accepted: 05/04/2015] [Indexed: 05/11/2023]
Abstract
We have developed a chemical mechanism describing the tropospheric degradation of chlorine containing very short-lived substances (VSLS). The scheme was included in a global atmospheric model and used to quantify the stratospheric injection of chlorine from anthropogenic VSLS ( ClyVSLS) between 2005 and 2013. By constraining the model with surface measurements of chloroform (CHCl3), dichloromethane (CH2Cl2), tetrachloroethene (C2Cl4), trichloroethene (C2HCl3), and 1,2-dichloroethane (CH2ClCH2Cl), we infer a 2013 ClyVSLS mixing ratio of 123 parts per trillion (ppt). Stratospheric injection of source gases dominates this supply, accounting for ∼83% of the total. The remainder comes from VSLS-derived organic products, phosgene (COCl2, 7%) and formyl chloride (CHClO, 2%), and also hydrogen chloride (HCl, 8%). Stratospheric ClyVSLS increased by ∼52% between 2005 and 2013, with a mean growth rate of 3.7 ppt Cl/yr. This increase is due to recent and ongoing growth in anthropogenic CH2Cl2-the most abundant chlorinated VSLS not controlled by the Montreal Protocol.
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Affiliation(s)
- R. Hossaini
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | | | - A. Saiz‐Lopez
- Atmospheric Chemistry and Climate GroupInstitute of Physical Chemistry Rocasolano, CSICMadridSpain
| | - J. J. Harrison
- National Centre for Earth Observation, Department of Physics and AstronomyUniversity of LeicesterLeicesterUK
| | - R. von Glasow
- Centre for Ocean and Atmospheric Sciences, School of Environmental SciencesUniversity of East AngliaNorwichUK
| | - R. Sommariva
- Centre for Ocean and Atmospheric Sciences, School of Environmental SciencesUniversity of East AngliaNorwichUK
- Now at Department of ChemistryUniversity of LeicesterLeicesterUK
| | - E. Atlas
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiFloridaUSA
| | - M. Navarro
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiFloridaUSA
| | - S. A. Montzka
- National Ocean and Atmospheric AdministrationBoulderColoradoUSA
| | - W. Feng
- National Centre for Atmospheric ScienceUniversity of LeedsLeedsUK
| | - S. Dhomse
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - C. Harth
- Scripps Institution of OceanographyUniversity of CaliforniaSan DiegoCaliforniaUSA
| | - J. Mühle
- Scripps Institution of OceanographyUniversity of CaliforniaSan DiegoCaliforniaUSA
| | - C. Lunder
- Monitoring and Information Technology DepartmentNorwegian Institute for Air ResearchKjellerNorway
| | - S. O'Doherty
- Atmospheric Chemistry Research Group, School of ChemistryUniversity of BristolBristolUK
| | - D. Young
- Atmospheric Chemistry Research Group, School of ChemistryUniversity of BristolBristolUK
| | - S. Reimann
- Swiss Federal Laboratories for Materials Science and TechnologyDübendorfSwitzerland
| | - M. K. Vollmer
- Swiss Federal Laboratories for Materials Science and TechnologyDübendorfSwitzerland
| | - P. B. Krummel
- Oceans and Atmosphere FlagshipCSIRO AspendaleVictoriaAustralia
| | - P. F. Bernath
- Department of Chemistry and BiochemistryOld Dominion UniversityNorfolkVirginiaUSA
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110
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Feng W. MO-B-BRB-01: Optimize Treatment Planning Process in Clinical Environment. Med Phys 2015. [DOI: 10.1118/1.4925307] [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: 11/07/2022] Open
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111
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Abstract
Protease-activated receptors (PARs) are a unique family of G-protein coupled receptors. PAR4, a member of PARs family, was reported to be related to the development of cancers. Whether PAR4 plays a role in the progress of esophageal squamous cancer is unknown. In this study, differential expression of PAR4 in esophageal squamous cancer was measured by real-time PCR (n = 28), western blot and tissue microarrays (n = 78). The results showed that PAR4 expression was remarkably decreased in esophageal squamous cancer tissues compared with the matched noncancerous tissues, especially in low differentiation and positive distant metastasis carcinoma tissues. Furthermore, the methylation level of PAR4 promoter in esophageal cancer cells and normal epithelial cells was determined. Human esophageal cancer cells TE-1 displayed significant hypermethylation of 19 CpG sites, but pronounced hypomethylation of the sites in esophageal epithelial cells HEEpiC. The results suggested that down-regulation expression of PAR4 occurs frequently in esophageal squamous cancers, and the loss of PAR4 expression may partly result from hypermethylation of the PAR4 promoter. That PAR4 expression difference in tumor progression possibly makes PAR4 become a molecular mark of tumor diagnosis.
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112
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Feng W, Chu A, Wuu C, Nguyen K. SU-E-T-235: Data Mining for Evaluating Treatment Performances Over a Large Quantity of Data to Monitor and Improve SBRT Workflow. Med Phys 2015. [DOI: 10.1118/1.4924596] [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: 11/07/2022] Open
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113
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Bakalyar D, Feng W, McKenney S. SU-E-I-16: Scan Length Dependency of the Radial Dose Distribution in a Long Polyethylene Cylinder. Med Phys 2015. [DOI: 10.1118/1.4924013] [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: 11/07/2022] Open
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114
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Chipperfield MP, Dhomse SS, Feng W, McKenzie RL, Velders GJM, Pyle JA. Quantifying the ozone and ultraviolet benefits already achieved by the Montreal Protocol. Nat Commun 2015; 6:7233. [PMID: 26011106 PMCID: PMC4455099 DOI: 10.1038/ncomms8233] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [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: 10/26/2014] [Accepted: 04/21/2015] [Indexed: 11/13/2022] Open
Abstract
Chlorine- and bromine-containing ozone-depleting substances (ODSs) are controlled by the 1987 Montreal Protocol. In consequence, atmospheric equivalent chlorine peaked in 1993 and has been declining slowly since then. Consistent with this, models project a gradual increase in stratospheric ozone with the Antarctic ozone hole expected to disappear by ∼2050. However, we show that by 2013 the Montreal Protocol had already achieved significant benefits for the ozone layer. Using a 3D atmospheric chemistry transport model, we demonstrate that much larger ozone depletion than observed has been avoided by the protocol, with beneficial impacts on surface ultraviolet. A deep Arctic ozone hole, with column values <120 DU, would have occurred given meteorological conditions in 2011. The Antarctic ozone hole would have grown in size by 40% by 2013, with enhanced loss at subpolar latitudes. The decline over northern hemisphere middle latitudes would have continued, more than doubling to ∼15% by 2013. Ozone-depleting substances have been controlled by the 1987 Montreal Protocol, ensuring atmospheric concentrations are now in decline. Here, the authors use a 3D model and suggest that these controls have already had significant benefits, with much larger ozone depletion than previously thought avoided by the protocol.
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Affiliation(s)
- M P Chipperfield
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK.,National Centre for Earth Observation (NCEO), University of Leeds, Leeds LS2 9JT, UK
| | - S S Dhomse
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK.,National Centre for Earth Observation (NCEO), University of Leeds, Leeds LS2 9JT, UK
| | - W Feng
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK.,National Centre for Atmospheric Science (NCAS), UK
| | - R L McKenzie
- National Institute of Water and Atmospheric Research (NIWA), Lauder Private Bag 50061, New Zealand
| | - G J M Velders
- National Institute for Public Health and the Environment, PO Box 1, Bilthoven 3720 BA, The Netherlands
| | - J A Pyle
- National Centre for Atmospheric Science (NCAS), UK.,Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
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115
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Feng W, Höffner J, Marsh DR, Chipperfield MP, Dawkins ECM, Viehl TP, Plane JMC. Diurnal variation of the potassium layer in the upper atmosphere. Geophys Res Lett 2015; 42:3619-3626. [PMID: 27478284 PMCID: PMC4949647 DOI: 10.1002/2015gl063718] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/08/2015] [Accepted: 04/09/2015] [Indexed: 06/06/2023]
Abstract
Measurements of the diurnal cycle of potassium (K) atoms between 80 and 110 km have been made during October (for the years 2004-2011) using a Doppler lidar at Kühlungsborn, Germany (54.1°N, 11.7°E). A pronounced diurnal variation is observed in the K number density, which is explored by using a detailed description of the neutral and ionized chemistry of K in a three-dimensional chemistry climate model. The model captures both the amplitude and phase of the diurnal and semidiurnal variability of the layer, although the peak diurnal amplitude around 90 km is overestimated. The model shows that the total potassium density (≈ K + K+ + KHCO3) exhibits little diurnal variation at each altitude, and the diurnal variations are largely driven by photochemical conversion between these reservoir species. In contrast, tidally driven vertical transport has a small effect at this midlatitude location, and diurnal fluctuations in temperature are of little significance because they are small and the chemistry of K is relatively temperature independent.
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Affiliation(s)
- W. Feng
- School of ChemistryUniversity of LeedsLeedsUK
- NCAS, School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - J. Höffner
- Leibniz‐Institute of Atmospheric PhysicsUniversity of RostockKühlungsbornGermany
| | - D. R. Marsh
- National Center for Atmospheric ResearchBoulderColoradoUSA
| | | | | | - T. P. Viehl
- Leibniz‐Institute of Atmospheric PhysicsUniversity of RostockKühlungsbornGermany
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116
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Zhang HW, Chen XL, Lin ZY, Xia J, Hou JX, Zhou D, Xi Y, Zhang M, Guo J, Feng W, Peng XY, Wu XW. Fibronectin chorused cohesion between endothelial progenitor cells and mesenchymal stem cells of mouse bone marrow. Cell Mol Biol (Noisy-le-grand) 2015; 61:26-32. [PMID: 26025398] [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] [Received: 04/07/2015] [Accepted: 04/17/2015] [Indexed: 06/04/2023]
Abstract
Endothelial progenitor cells (EPCs) could function as niche cells to promote self—renewal of mesenchymal stem cells (MSCs) in the mouse bone marrow. Cohesion was the basis of the two cells to display their biological functions to each other. In this study, we investigated the mechanism of cohesion between MSCs and EPCs. And demonstrated that fibronectin (FN) in EPCs activated the integrin α5β1 of MSCs and further mediated cell-cell cohesion. Integrin α5β1 and its FN ligand played critical roles not only in single—cell line adhesion, but also in adhesion between stem and niche cells. This novel finding is important to understand the cross—talk between MSCs and their niche cells.
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Affiliation(s)
- H W Zhang
- Huazhong University of Science and Technology Tongji Hospital, Tongji Medical School Hubei China
| | - X L Chen
- School of Medicine, Shihezi University Department of Immunology Xinjiang China
| | - Z Y Lin
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - J Xia
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - J X Hou
- Huazhong University of Science and Technology Tongji Hospital, Tongji Medical School Hubei China
| | - D Zhou
- First Affiliated Hospital, School of Medicine, Shihezi University Medical Laboratory Xinjiang China
| | - Y Xi
- Huazhong University of Science and Technology Tongji Hospital, Tongji Medical School Hubei China
| | - M Zhang
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - J Guo
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - W Feng
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - X Y Peng
- First Affiliated Hospital, School of Medicine, Shihezi University Department of General Surgery Xinjiang China pengxinyu2000@sina.com
| | - X W Wu
- First Affiliated Hospital, School of Medicine, Shihezi University Department of General Surgery Xinjiang China wxwshz@126.com
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117
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Dhomse SS, Chipperfield MP, Feng W, Hossaini R, Mann GW, Santee ML. Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption: A 3-D model study. Geophys Res Lett 2015; 42:3038-3047. [PMID: 27867234 PMCID: PMC5102144 DOI: 10.1002/2015gl063052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/05/2015] [Accepted: 03/13/2015] [Indexed: 05/05/2023]
Abstract
Following the eruption of Mount Pinatubo, satellite and in situ measurements showed a large enhancement in stratospheric aerosol in both hemispheres, but significant midlatitude column O3 depletion was observed only in the north. We use a three-dimensional chemical transport model to determine the mechanisms behind this hemispheric asymmetry. The model, forced by European Centre for Medium-Range Weather Forecasts ERA-Interim reanalyses and updated aerosol surface area density, successfully simulates observed large column NO2 decreases and the different extents of ozone depletion in the two hemispheres. The chemical ozone loss is similar in the Northern (NH) and Southern Hemispheres (SH), but the contrasting role of dynamics increases the depletion in the NH and decreases it in the SH. The relevant SH dynamics are not captured as well by earlier ERA-40 reanalyses. Overall, the smaller SH column O3 depletion can be attributed to dynamical variability and smaller SH background lower stratosphere O3 concentrations.
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Affiliation(s)
- S. S. Dhomse
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
- National Centre for Earth ObservationUniversity of LeedsLeedsUK
| | - M. P. Chipperfield
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
- National Centre for Earth ObservationUniversity of LeedsLeedsUK
| | - W. Feng
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
- National Centre for Atmospheric ScienceUniversity of LeedsLeedsUK
| | - R. Hossaini
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - G. W. Mann
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
- National Centre for Atmospheric ScienceUniversity of LeedsLeedsUK
| | - M. L. Santee
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCaliforniaUSA
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118
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Zhu P, Liu Q, Liu S, Su X, Feng W, Lei X, Liu J, Cui K, Huang B, Shi D. Generation of Foxo3-targeted Mice by Injection of mRNAs Encoding Transcription Activator-like Effector Nucleases (TALENs) into Zygotes. Reprod Domest Anim 2015; 50:474-83. [PMID: 25800339 DOI: 10.1111/rda.12515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 02/23/2015] [Indexed: 12/28/2022]
Abstract
In this study, for exploring the mechanism of forkhead box O3(Foxo3) participating in regulation of the activation of primordial oocytes, Foxo3-targeted mice were generated by injection of mRNAs encoding transcription activator-like effector nucleases (TALENs) into mouse zygotes. The TALEN sites were designed with high conservative homologous region among pig, bovine, buffalo and mouse by commercial bio-companies. The TALENs mutagenic non-homologous end-joining (NHEJ) repair activity were determined to be 31.3% in human embryonic kidney 293T (HEK-293T) cells by dual luciferase reporter assay system. Then, we firstly injected TALEN-mRNAs into the cytoplasm of mouse zygotes by micromanipulation, and four of 48 mouse blastocysts were identified as mutation by sequencing. Subsequently, by the method of TALEN-mRNAs injected into the zygotes with pronucleus micromanipulation technique, we obtained seven Foxo3 mutants of 20 FVB/NJ backgrounds mice which were Foxo3-independent alleles with frameshift and deletion mutations. It was very interesting that all seven were heterozygous mutants (Foxo3(-/+) ), and the gene mutagenesis rates of the mice reached 35%. The five Foxo3 mutant females were all infertile in the following 6 months after birth. The histological examination results showed that there were rare primordial follicles and primary follicles in the ovary of Foxo3 mutant compared to that of wide-type female mice. Moreover, one of two mutant males was subfertile and another was fertile normally. Those results suggested that the mutant of Foxo3 severely affected the fertile ability of female and perhaps male in some degree; furthermore, an even more efficient TALENs-based gene mutation method has been established to be poised to revolutionize the study of mouse and other species genetics.
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Affiliation(s)
- P Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, Guangxi, China
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119
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Zhu Z, Xu Y, Zhao J, Liu Q, Feng W, Fan J, Wang P. miR-367 promotes epithelial-to-mesenchymal transition and invasion of pancreatic ductal adenocarcinoma cells by targeting the Smad7-TGF-β signalling pathway. Br J Cancer 2015; 112:1367-75. [PMID: 25867271 PMCID: PMC4402451 DOI: 10.1038/bjc.2015.102] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [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] [Revised: 01/08/2015] [Accepted: 02/16/2015] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Aberrant Smad7 expression contributes to the invasion and metastasis of pancreatic cancer cells. However, the potential mechanism underlying aberrant Smad7 expression in human pancreatic ductal adenocarcinoma (PDAC) remains largely unknown. METHODS Bioinformatic prediction programmes and luciferase reporter assay were used to identify microRNAs regulating Smad7. The association between miR-367 expression and the overall survival of PDAC patients was evaluated by Kaplan-Meier analysis. The effects of miR-367 and Smad7 on the invasion and metastasis of pancreatic cancer cells were investigated both in vitro and in vivo. RESULTS We found that miR-367 downregulated Smad7 expression by directly targeting its 3'-UTR in human pancreatic cancer cells. High level of miR-367 expression correlated with poor prognosis of PDAC patients. Functional studies showed that miR-367 promoted pancreatic cancer invasion in vitro and metastasis in vivo through downregulating Smad7. In addition, we showed that miR-367 promoted epithelial-to-mesenchymal transition by increasing transforming growth factor-β (TGF-β)-induced transcriptional activity. CONCLUSIONS The present study identified and characterised a signalling pathway, the miR-367/Smad7-TGF-β pathway, which is involved in the invasion and metastasis of pancreatic cancer cells. Our results suggest that miR-367 may be a promising therapeutic target for the treatment of human pancreatic cancer.
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Affiliation(s)
- Z Zhu
- 1] Department of Radiation Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai 200032, China [2] Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China
| | - Y Xu
- 1] Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China [2] Department of Pancreatic and Hepatobiliary Surgery, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai 200032, China
| | - J Zhao
- 1] Department of Radiation Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai 200032, China [2] Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China
| | - Q Liu
- 1] Department of Radiation Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai 200032, China [2] Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China
| | - W Feng
- 1] Department of Radiation Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai 200032, China [2] Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China
| | - J Fan
- Department of Pathology, Huashan Hospital, Fudan University, 12 Central Wulumuqi Road, Shanghai 200040, China
| | - P Wang
- 1] Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China [2] Department of Integrative Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai 200032, China
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Pawel JV, Tseng J, Dediu M, Schumann C, Moritz B, Mendell J, Jin X, Feng W, Copigneaux C, Beckman RA. Phase 2 HERALD study of patritumab (P) with erlotinib (E) in advanced NSCLC subjects (SBJs). Pneumologie 2015. [DOI: 10.1055/s-0035-1544763] [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: 10/24/2022]
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Piccart M, Hortobagyi GN, Campone M, Pritchard KI, Lebrun F, Ito Y, Noguchi S, Perez A, Rugo HS, Deleu I, Burris HA, Provencher L, Neven P, Gnant M, Shtivelband M, Wu C, Fan J, Feng W, Taran T, Baselga J. Everolimus plus exemestane for hormone-receptor-positive, human epidermal growth factor receptor-2-negative advanced breast cancer: overall survival results from BOLERO-2†. Ann Oncol 2014; 25:2357-2362. [PMID: 25231953 PMCID: PMC6267855 DOI: 10.1093/annonc/mdu456] [Citation(s) in RCA: 386] [Impact Index Per Article: 38.6] [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] [Received: 07/31/2014] [Revised: 08/27/2014] [Accepted: 09/09/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The BOLERO-2 study previously demonstrated that adding everolimus (EVE) to exemestane (EXE) significantly improved progression-free survival (PFS) by more than twofold in patients with hormone-receptor-positive (HR(+)), HER2-negative advanced breast cancer that recurred or progressed during/after treatment with nonsteroidal aromatase inhibitors (NSAIs). The overall survival (OS) analysis is presented here. PATIENTS AND METHODS BOLERO-2 is a phase III, double-blind, randomized international trial comparing EVE 10 mg/day plus EXE 25 mg/day versus placebo (PBO) + EXE 25 mg/day in postmenopausal women with HR(+) advanced breast cancer with prior exposure to NSAIs. The primary end point was PFS by local investigator assessment; OS was a key secondary end point. RESULTS At the time of data cutoff (3 October 2013), 410 deaths had occurred and 13 patients remained on treatment. Median OS in patients receiving EVE + EXE was 31.0 months [95% confidence interval (CI) 28.0-34.6 months] compared with 26.6 months (95% CI 22.6-33.1 months) in patients receiving PBO + EXE (hazard ratio = 0.89; 95% CI 0.73-1.10; log-rank P = 0.14). Poststudy treatments were received by 84% of patients in the EVE + EXE arm versus 90% of patients in the PBO + EXE arm. Types of poststudy therapies were balanced across arms, except for chemotherapy (53% EVE + EXE versus 63% PBO + EXE). No new safety concerns were identified. CONCLUSIONS In BOLERO-2, adding EVE to EXE did not confer a statistically significant improvement in the secondary end point OS despite producing a clinically meaningful and statistically significant improvement in the primary end point, PFS (4.6-months prolongation in median PFS; P < 0.0001). Ongoing translational research should further refine the benefit of mTOR inhibition and related pathways in this treatment setting. TRIAL REGISTRATION NUMBER NCT00863655.
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Affiliation(s)
- M Piccart
- Department of Medicine, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
| | - G N Hortobagyi
- Department of Breast Medical Oncology, Multidisciplinary Breast Cancer Research Program, University of Texas MD Anderson Cancer Center, Houston, USA
| | - M Campone
- Institut de Cancérologie de l'Ouest, René Gauducheau, Centre de Recherche en Cancérologie, Nantes Saint Herblain, France
| | - K I Pritchard
- Department of Medicine, Sunnybrook Odette Cancer Centre and the University of Toronto, Toronto, Canada
| | - F Lebrun
- Department of Medicine, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
| | - Y Ito
- Department of Breast Medical Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - S Noguchi
- Department of Breast and Endocrine Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - A Perez
- Breast Cancer Centers, Memorial Cancer Institute, Hollywood
| | - H S Rugo
- Breast Oncology and Clinical Trials Education, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, USA
| | - I Deleu
- Oncologic Centre, AZ Nikolaas, Sint-Niklaas, Belgium
| | - H A Burris
- Sarah Cannon Research Institute, Nashville, USA
| | - L Provencher
- Centre des Maladies du Sein Deschênes-Fabia, CHU-Hôpital du Saint Sacrement, Québec, Canada
| | - P Neven
- Multidisciplinary Breast Centre and Department of Gynecologic Oncology, University Hospitals Leuven, Leuven, Belgium
| | - M Gnant
- Department of Surgery, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | | | - C Wu
- Novartis Pharmaceuticals Corporation, East Hanover
| | - J Fan
- Novartis Pharmaceuticals Corporation, East Hanover
| | - W Feng
- Novartis Pharmaceuticals Corporation, East Hanover
| | - T Taran
- Novartis Pharmaceuticals Corporation, East Hanover
| | - J Baselga
- Memorial Sloan-Kettering Cancer Center, New York, USA
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Janches D, Plane J, Nesvorný D, Feng W, Vokrouhlický D, Nicolls M. Radar detectability studies of slow and small Zodiacal Dust Cloud Particles: I. The case of Arecibo 430 MHz meteor head echo observations. Astrophys J 2014; 796:41. [PMID: 27642186 PMCID: PMC5023023 DOI: 10.1088/0004-637x/796/1/41] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Recent model development of the Zodiacal Dust Cloud (ZDC) model (Nesvorný et al. 2010, 2011b) argue that the incoming flux of meteoric material into the Earth's upper atmosphere is mostly undetected by radars because they cannot detect small extraterrestrial particles entering the atmosphere at low velocities due to the relatively small production of electrons. In this paper we present a new methodology utilizing meteor head echo radar observations that aims to constrain the ZDC physical model by ground-based measurements. In particular, for this work, we focus on Arecibo 430 MHz observations since this is the most sensitive radar utilized for this type of observations to date. For this, we integrate and employ existing comprehensive models of meteoroid ablation, ionization and radar detection to enable accurate interpretation of radar observations and show that reasonable agreement in the hourly rates is found between model predictions and Arecibo observations when: 1) we invoke the lower limit of the model predicted flux (~16 t/d) and 2) we estimate the ionization probability of ablating metal atoms using laboratory measurements of the ionization cross sections of high speed metal atom beams, resulting in values up to two orders of magnitude lower than the extensively utilized figure reported by Jones (1997) for low speeds meteors. However, even at this lower limit the model over predicts the slow portion of the Arecibo radial velocity distributions by a factor of 3, suggesting the model requires some revision.
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Affiliation(s)
- D. Janches
- Space Weather Lab., Mail Code 674, GSFC/NASA, Greenbelt, MD 20771
| | - J.M.C. Plane
- School of Chemistry, University of Leeds, Leeds, U.K
| | - D. Nesvorný
- SouthWest Research Institute, Boulder, CO, USA
| | - W. Feng
- School of Chemistry, University of Leeds, Leeds, U.K
| | - D. Vokrouhlický
- Institute of Astronomy, Charles University, Prague, Czech Republic
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Yue Z, Feng W, Xiangke L, Liuxing W, Qingxia F, Jianbo G. WAVE3 promotes epithelial-mesenchymal transition of gastric cancer through upregulation of Snail. Cancer Gene Ther 2014; 21:499-506. [PMID: 25378074 DOI: 10.1038/cgt.2014.52] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/14/2014] [Accepted: 09/15/2014] [Indexed: 12/28/2022]
Abstract
WAVE3, an actin cytoskeleton remodeling protein overexpressed in many kinds of cancers, has been associated with a lot of metastatic diseases. However, the role and mechanisms of the high expression of WAVE3 in human gastric cancer has not been fully elucidated. Here we demonstrated that WAVE3 was expressed in all six kinds of gastric-cancer cell lines: BGC-823, SGC-7901, AGS, MGC803, MKN28 and MKN45. Furthermore, a correlation was found between aggressiveness of these cell lines and expression of WAVE3. Next, we investigated the role of WAVE3 in SGC-7901 cells and found that upregulating WAVE3 could promote the migration, invasion and proliferation of SGC-7901 cells in vitro. It has been reported that WAVE3 could induce cancer invasion and metastasis by participating epithelial-mesenchymal transition (EMT). However, the mechanisms are not entirely clear. In this study we showed that elevated WAVE3 levels could induce EMT in SGC-7901 cells by dampening the expression of E-cadherin while increasing the expression of vimentin. Elevated WAVE3 levels could also improve the expression of transcription factor Snail. In addition, downregulating Snail could particularly reduce EMT and the metastasis, invasion and proliferation activity in SGC-7901 cells elevated by overexpression of WAVE3. Taken together, we demonstrated that WAVE3 promoted gastric-cancer-cells migration and invasion by taking part in EMT via upregulation of Snail. WAVE3 could be a useful target for gastric-cancer prevention and therapy.
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Affiliation(s)
- Z Yue
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - W Feng
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - L Xiangke
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - W Liuxing
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - F Qingxia
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - G Jianbo
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
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Mahieu E, Chipperfield MP, Notholt J, Reddmann T, Anderson J, Bernath PF, Blumenstock T, Coffey MT, Dhomse SS, Feng W, Franco B, Froidevaux L, Griffith DWT, Hannigan JW, Hase F, Hossaini R, Jones NB, Morino I, Murata I, Nakajima H, Palm M, Paton-Walsh C, III JMR, Schneider M, Servais C, Smale D, Walker KA. Recent Northern Hemisphere stratospheric HCl increase due to atmospheric circulation changes. Nature 2014; 515:104-7. [DOI: 10.1038/nature13857] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 09/10/2014] [Indexed: 11/09/2022]
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Lin X, Wang Z, Zhang R, Feng W. High serum microRNA-335 level predicts aggressive tumor progression and unfavorable prognosis in pediatric acute myeloid leukemia. Clin Transl Oncol 2014; 17:358-64. [PMID: 25301405 DOI: 10.1007/s12094-014-1237-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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: 07/28/2014] [Accepted: 09/24/2014] [Indexed: 12/26/2022]
Abstract
PURPOSE MiRNA expression profiles previously showed the higher expression of microRNA(miR)-335 in bone marrow samples of pediatric acute myeloid leukemia (AML) patients than normal controls. Our aim was to investigate associations of miR-335 expression with tumor progression and prognosis in pediatric AML. METHODS Real-time quantitative PCR was performed to detect the expression of miR-335 in bone marrow mononuclear cells and serum obtained from patients with pediatric AML and healthy controls. RESULTS Expression levels of miR-335 in the bone marrow and serum of pediatric AML patients were both significantly higher than those in normal controls (both P < 0.001). Then, high serum miR-335 level occurred more frequently in French-American-British classification subtype M7 subtype than in other subtypes (P = 0.03). The expression of serum miR-335 in pediatric AML patients with unfavorable karyotypes was also significantly higher than those in intermediate and favorable groups (P = 0.008). Moreover, high serum miR-335 level was markedly associated with shorter relapse-free and overall survivals (both P < 0.001) of patients with pediatric AML. Furthermore, the multivariate analysis identified the serum miR-335 and cytogenetics risk as independent prognostic factors for both relapse-free and overall survivals. More importantly, the prognostic relevance of serum miR-335 expression was more obvious in the subgroup of patients with intermediate-risk cytogenetics. CONCLUSION Our data offer the convincing evidence for the first time that serum miR-335 level may be markedly and consistently increased in pediatric AML patients. Serum miR-335 may serve as a promising marker for monitoring the progression and predicting the clinical outcome of patients with this disease.
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MESH Headings
- Adolescent
- Bone Marrow/pathology
- Case-Control Studies
- Child
- Child, Preschool
- Disease Progression
- Disease-Free Survival
- Female
- Humans
- Karyotype
- Leukemia, Myeloid, Acute/blood
- Leukemia, Myeloid, Acute/classification
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/therapy
- Leukocytes, Mononuclear/metabolism
- Male
- MicroRNAs/blood
- Predictive Value of Tests
- Prognosis
- Real-Time Polymerase Chain Reaction
- Survival Rate
- Up-Regulation
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Affiliation(s)
- X Lin
- Department of Paediatric Intensive Care Units, Huai'an Maternity and Child Health Hospital of Yangzhou University, Huai'an, 223002, Jiangsu Province, China
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Jani A, Yaeh A, Nanda T, Qureshi Y, Saad S, Feng W, Isaacson S, Sisti M, Bruce J, McKhann G, Lesser J, Lassman A, Wang T. The Effect of Energy Index on Brain Metastases Local Control With Stereotactic Radiosurgery. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1065] [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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127
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Pathak R, Shao L, Chafekar SM, Feng W, Ponnappan U, Fink LM, Zhou D, Hauer-Jensen M. IKKβ regulates endothelial thrombomodulin in a Klf2-dependent manner. J Thromb Haemost 2014; 12:1533-1544. [PMID: 25039491 PMCID: PMC4163124 DOI: 10.1111/jth.12664] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 08/05/2013] [Indexed: 01/21/2023]
Abstract
BACKGROUND Endothelial thrombomodulin (TM) is critically involved in anticoagulation, anti-inflammation, cytoprotection and normal fetal development. Tumor necrosis factor alpha (TNFα) suppresses TM expression. OBJECTIVE TNFα has been shown to down-regulate TM partly via activation of nuclear factor kappa B (NF-κB). However, because the TM promoter lacks an NF-κB binding site, the direct involvement of NF-κB has been controversial. We investigated the role of the upstream regulatory serine kinase, inhibitory kappa-B kinase-β (IKKβ), in TM expression and function with or without TNFα treatment. METHODS Inhibition of IKKβ was achieved by specific chemical inhibitors, siRNA or shRNA. TM expression was assessed by qRT-PCR, Western blot, flow cytometry, luciferase reporter assay and chromatin immune-precipitation (ChIP) assay. TM function was estimated by generation of activated protein C (APC). NF-κB activation was determined by immunocytochemistry. RESULTS AND CONCLUSIONS IKKβ inhibition increased TM expression and function, and attenuated TNFα-mediated TM down-regulation. In contrast, inhibition of downstream canonical NF-κB protein family members p50 and p65 (RelA) failed to up-regulate TM expression and did not affect IKKβ inhibition-mediated TM over-expression. However, knockdown of cRel and RelB, family members of the canonical and non-canonical NF-κB pathway, respectively, resulted in TM over-expression. IKKβ inhibition caused over-expression, increased promoter activity and enhanced binding of Krüppel-like factor 2 (Klf2) to the TM promoter, which positively regulates TM expression. Finally, knockdown of Klf2 completely attenuated IKKβ inhibition-mediated TM up-regulation. We conclude that IKKβ regulates TM in a Klf2-dependent manner.
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Affiliation(s)
- R Pathak
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR
| | - L Shao
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR
| | - S M Chafekar
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, AR
| | - W Feng
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR
| | - U Ponnappan
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, AR
| | - L M Fink
- Desert Research Institute, Las Vegas, NV
| | - D Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR
| | - M Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR
- Surgical Service, Central Arkansas Veterans Healthcare System, Little Rock, AR, USA
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Bao Y, Gu D, Feng W, Sun X, Wang X, Zhang X, Shi Q, Cui G, Yu H, Tang C, Deng A. COUP-TFII regulates metastasis of colorectal adenocarcinoma cells by modulating Snail1. Br J Cancer 2014; 111:933-43. [PMID: 25032732 PMCID: PMC4150277 DOI: 10.1038/bjc.2014.373] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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] [Revised: 04/26/2014] [Accepted: 05/29/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII, also known as NR2F2) promotes metastasis by functioning in the tumour microenvironment; however, the role of COUP-TFII in colorectal cancer remains unknown. METHODS Human colon adenocarcinoma tissues were collected to test COUP-TFII expression. Wound-healing and cell invasion assay were used to evaluate migration and invasion of cells. Chicken ovalbumin upstream promoter-transcription factor II and related protein expression was assessed by immunostaining, immunoblotting and real-time PCR assay. Tamoxifen-inducible COUP-TFII knockout mice were employed to test COUP-TFII functions on colon cancer metastasis in vivo. RESULTS Elevated expression of COUP-TFII in colorectal adenocarcinoma tissue correlated with overexpression of the Snail1 transcription factor. High COUP-TFII expression correlated with metastasis and shorter patient survival. Chicken ovalbumin upstream promoter-transcription factor II regulated the migration and invasion of cancer cells. With Snail1, COUP-TFII inhibited expression of adherence molecules such as ZO-1, E-cadherin and β-catenin in colorectal cancer cells. Overexpression of COUP-TFII was required for cancer cells to metastasise in vivo. Chicken ovalbumin upstream promoter-transcription factor II regulated the transcription and expression of Snail1 by directly targeting the Snail1 promoter and regulated associated genes. CONCLUSIONS Chicken ovalbumin upstream promoter-transcription factor II was crucial for colorectal cancer metastasis and regulated cell migration and metastasis in conjunction with Snail1. Chicken ovalbumin upstream promoter-transcription factor II was found to be a biomarker associated with patient survival and colorectal cancer metastasis.
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Affiliation(s)
- Y Bao
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - D Gu
- Huzhou Central Hospital, Huzhou 313000, China
| | - W Feng
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - X Sun
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - X Wang
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - X Zhang
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - Q Shi
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - G Cui
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - H Yu
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - C Tang
- First Affiliated Hospital, Huzhou Teachers College, the First People's Hospital of Huzhou, Huzhou 313000, China
| | - A Deng
- Department of Laboratory Diagnostic, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
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Feng W, Rao N, Li BY, Liu DY, Yang F, Liu HM, Chen X. 30Computational prediction of miRNA signature related to valvular heart disease with atrial fibrillation using coherent data sources at different molecular levels. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu077.2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Qi Y, Feng W, Cai J, Sun Q, Li S, Li M, Song A, Yang P. Effects of conservatively treated diseased cementum with or without EMD on in vitro cementoblast differentiation and in vivo cementum-like tissue formation of human periodontal ligament cells. Cell Prolif 2014; 47:310-7. [PMID: 24930868 DOI: 10.1111/cpr.12116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/08/2014] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES The present study aimed to evaluate the effects of conservatively treated diseased cementum on in vitro cementoblast differentiation and in vivo cementum-like tissue formation of human periodontal ligament cells (hPDLCs), and observe differential effects of enamel matrix derivative (EMD) on in vivo cementum formation by hPDLCs. MATERIALS AND METHODS Forty-eight cementum slices and 48 dentin slices were prepared from periodontitis compromised teeth, and hPDLCs were inoculated on to all root slices. Twenty-four co-cultured root slices of each group were used for mRNA expression of cementum attachment protein and CEMP1. With application of EMD, 24 co-cultured root slices (divided into groups C, D, C+E, D+E) were transplanted subcutaneously into nude mice. All root fragments were reviewed by histological analysis and immunohistochemical staining for bone sialoprotein. RESULTS mRNA expressions of cementum attachment protein and cementum protein - 1 from hPDLCs on cementum slices were statistically higher than those of dentin slices. Seven specimens of group C and 10 specimens of group C+E revealed a layer of cementum-like tissue (NFC) on surfaces of pre-existing cementum. NFC was thicker in group C+E than in group C. All NFCs were positively stained for bone sialoprotein, however, there was no NFC formation on dentin slices. CONCLUSION Conservatively treated diseased cementum promoted in vitro cementoblast differentiation and in vivo cementum-like tissue formation by hPDLCs, and the in vivo effect was enhanced by the presence of EMD.
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Affiliation(s)
- Y Qi
- Shandong Provincial Key Laboratory of Oral Biomedicine, Jinan, China
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131
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Feng W, Chu A, Chi Y, Hu J. SU-E-T-628: Effect of Dose Rate and Leakage Correction for Dosimetric Leaf Gap Measurement. Med Phys 2014. [DOI: 10.1118/1.4888964] [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: 11/07/2022] Open
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132
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Chu A, Feng W, Ahmad M, Chen Z, Nath R. SU-E-J-85: Leave-One-Out Perturbation (LOOP) Fitting Algorithm for Absolute Dose Film Calibration. Med Phys 2014. [DOI: 10.1118/1.4888137] [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: 11/07/2022] Open
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Bakalyar D, Feng W, McKenney S. SU-F-18C-11: Diameter Dependency of the Radial Dose Distribution in a Long Polyethylene Cylinder. Med Phys 2014. [DOI: 10.1118/1.4889096] [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: 11/07/2022] Open
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Rugo HS, Pritchard KI, Gnant M, Noguchi S, Piccart M, Hortobagyi G, Baselga J, Perez A, Geberth M, Csoszi T, Chouinard E, Srimuninnimit V, Puttawibul P, Eakle J, Feng W, Bauly H, El-Hashimy M, Taran T, Burris HA. Incidence and time course of everolimus-related adverse events in postmenopausal women with hormone receptor-positive advanced breast cancer: insights from BOLERO-2. Ann Oncol 2014; 25:808-815. [PMID: 24615500 PMCID: PMC3969554 DOI: 10.1093/annonc/mdu009] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 11/08/2013] [Accepted: 12/04/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND In the BOLERO-2 trial, everolimus (EVE), an inhibitor of mammalian target of rapamycin, demonstrated significant clinical benefit with an acceptable safety profile when administered with exemestane (EXE) in postmenopausal women with hormone receptor-positive (HR(+)) advanced breast cancer. We report on the incidence, time course, severity, and resolution of treatment-emergent adverse events (AEs) as well as incidence of dose modifications during the extended follow-up of this study. PATIENTS AND METHODS Patients were randomized (2:1) to receive EVE 10 mg/day or placebo (PBO), with open-label EXE 25 mg/day (n = 724). The primary end point was progression-free survival. Secondary end points included overall survival, objective response rate, and safety. Safety evaluations included recording of AEs, laboratory values, dose interruptions/adjustments, and study drug discontinuations. RESULTS The safety population comprised 720 patients (EVE + EXE, 482; PBO + EXE, 238). The median follow-up was 18 months. Class-effect toxicities, including stomatitis, pneumonitis, and hyperglycemia, were generally of mild or moderate severity and occurred relatively early after treatment initiation (except pneumonitis); incidence tapered off thereafter. EVE dose reduction and interruption (360 and 705 events, respectively) required for AE management were independent of patient age. The median duration of dose interruption was 7 days. Discontinuation of both study drugs because of AEs was higher with EVE + EXE (9%) versus PBO + EXE (3%). CONCLUSIONS Most EVE-associated AEs occur soon after initiation of therapy, are typically of mild or moderate severity, and are generally manageable with dose reduction and interruption. Discontinuation due to toxicity was uncommon. Understanding the time course of class-effect AEs will help inform preventive and monitoring strategies as well as patient education. TRIAL REGISTRATION NUMBER NCT00863655.
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Affiliation(s)
- H S Rugo
- University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, UCSF, San Francisco, USA.
| | - K I Pritchard
- Sunnybrook Odette Cancer Centre and the University of Toronto, Toronto, Canada
| | - M Gnant
- Department of Surgery, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - S Noguchi
- Department of Breast and Endocrine Surgery, Osaka University, Osaka, Japan
| | - M Piccart
- Institut Jules Bordet, Brussels, Belgium
| | - G Hortobagyi
- The University of Texas MD Anderson Cancer Center, Houston
| | - J Baselga
- Memorial Sloan-Kettering Cancer Center, New York
| | - A Perez
- Memorial Cancer Institute, Hollywood, USA
| | - M Geberth
- Praxisklinic am Rosengarten Mannheim, Schwerpunktpraxis für Gynaekologische Onkologie, Mannheim, Germany
| | - T Csoszi
- Department of Medical Oncology, Jasz-Nagykun-Szolnok Megyei Hetenyi Geza Korhaz-Rendelointezet, Szolnok, Hungary
| | - E Chouinard
- Cambridge Memorial Hospital, Cambridge, Canada
| | | | - P Puttawibul
- Songklanagarind Hospital, Faculty of Medicine, Prince of Songkla University, Songkla, Thailand
| | - J Eakle
- Florida Cancer Specialists, Ft Myers
| | - W Feng
- Novartis Pharmaceuticals Corporation, East Hanover, USA
| | - H Bauly
- Novartis Pharma AG, Basel, Switzerland
| | - M El-Hashimy
- Novartis Pharmaceuticals Corporation, East Hanover, USA
| | - T Taran
- Novartis Pharmaceuticals Corporation, East Hanover, USA
| | - H A Burris
- Sarah Cannon Research Institute, Nashville, USA
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Feng W, Yang CX, Zhang L, Fang Y, Yan M. Curcumin promotes the apoptosis of human endometrial carcinoma cells by downregulating the expression of androgen receptor through Wnt signal pathway. EUR J GYNAECOL ONCOL 2014; 35:718-723. [PMID: 25556280] [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
OBJECTIVE The current study aimed to explore the effect ofcurcumin on androgen receptor (AR) expression in endometrial carcinoma cells, as well as the underlying mechanisms. MATERIALS AND METHODS Endometrial carcinoma cells were treated with curcumin (10, 50, and 100 micromol/l) for 12, 24, and 48 hours. Their growth curves were drawn using MTT assays and their apoptotic rates were determined using flow cytometry. The mRNA and protein expression of AR was detected using PCR and that of the Wnt signal related nucleopro- tein beta-cantenin was observed using western blot analysis. The influence of beta-cantenin on the action of curcumin was observed. RESULTS Curcumin downregulated the proliferation and apoptosis of human endometrial carcinoma cells in concentration and time-dependent manners. It downregulated the expression of AR and beta-cantenin in the cells. rWnt3a partially cancelled the effects of curcumin on the proliferation and apoptosis of human endometrial carcinoma cells as well as the AR expression-downregulating effect of curcumin. CONCLUSION Curcumin inhibits the proliferation and apoptosis of human endometrial carcinoma cells by downregulating their AR expression through the Wnt signal pathway.
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Affiliation(s)
- W Feng
- Department of Gynecology, the First Hospital of Lianyungang City, the Affiliated Lianyungang Hospital of Xuzhou Medical College, China
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Montoro Lopez M, Pons De Antonio I, Itziar Soto C, Florez Gomez R, Alonso Ladreda A, Rios Blanco J, Refoyo Salicio E, Moreno Yanguela M, Lopez Sendon J, Guzman Martinez G, Van De Heyning CM, Magne J, Pierard L, Bruyere P, Davin L, De Maeyer C, Paelinck B, Vrints C, Lancellotti P, Michalski B, Krzeminska-Pakula M, Lipiec P, Szymczyk E, Chrzanowski L, Kasprzak J, Leao RN, Florencio AF, Oliveira AR, Bento B, Lopes S, Calaca J, Palma Reis R, Krestjyaninov M, Gimaev R, Razin V, Arangalage D, Chiampan A, Cimadevilla C, Touati A, Himbert D, Brochet E, Iung B, Nataf P, Vahanian A, Messika-Zeitoun D, Guvenc T, Karacimen D, Erer H, Ilhan E, Sayar N, Karakus G, Eren M, Iriart X, Tafer N, Roubertie F, Mauriat P, Thambo J, Wang J, Fang F, Yip GW, Sanderson J, Feng W, Yu C, Lam Y, Assabiny A, Apor A, Nagy A, Vago H, Toth A, Merkely B, Kovacs A, Castaldi B, Vida V, Guariento A, Padalino M, Cerutti A, Maschietto N, Biffanti R, Reffo E, Stellin G, Milanesi O, Baronaite-Dudoniene K, Urbaite L, Smalinskas V, Veisaite R, Vasylius T, Vaskelyte J, Puodziukynas A, Wieczorek J, Rybicka-Musialik A, Berger-Kucza A, Hoffmann A, Wnuk-Wojnar A, Mizia-Stec K, Melao F, Ribeiro V, Amorim S, Araujo C, Torres J, Cardoso J, Pinho P, Maciel M, Storsten P, Eriksen M, Boe E, Estensen M, Erikssen G, Smiseth O, Skulstad H, Miglioranza M, Gargani L, Sant`Anna R, Rover M, Martins V, Mantovanni A, Kalil R, Leiria T, Luo X, Fang F, Lee P, Zhang Z, Lam Y, Sanderson J, Kwong JS, Yu C, Borowiec A, Dabrowski R, Wozniak J, Jasek S, Chwyczko T, Kowalik I, Janas J, Musiej-Nowakowska E, Szwed H, Palinsky M, Petrovicova J, Pirscova M, Baricevic Z, Lovric D, Cikes M, Skoric B, Ljubas Macek J, Reskovic Luksic V, Separovic Hanzevacki J, Milicic D, Elmissiri A, El Shahid G, Abdal-Wahhab S, Vural MG, Yilmaz M, Cetin S, Akdemir R, Yoldas TK, Yeter E, Karamanou A, Hamodraka E, Lekakis I, Paraskevaidis I, Kremastinos D, Appiah-Dwomoh EK, Wang V, Otto C, Mayar F, Bonaventura K, Sunman H, Canpolat U, Kuyumcu M, Yorgun H, Sahiner L, Ozer N. Club 35 Poster Session Wednesday 11 December: 11/12/2013, 09:30-16:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet213] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Anwar M, Lupo J, Molinaro A, Clarke J, Butowski N, Prados M, Chang S, HaasKogan D, Nelson S, Ashman J, Drazkowski J, Zimmerman R, Lidner T, Giannini C, Porter A, Patel N, Atean I, Shin N, Toltz A, Laude C, Freeman C, Seuntjens J, Roberge D, Back M, Kastelan M, Guo L, Wheeler H, Beauchesne P, Faure G, Noel G, Schmitt T, Martin L, Jadaud E, Carnin C, Bowers J, Bennion N, Lomas H, Spencer K, Richardson M, McAllister W, Sheehan J, Schlesinger D, Kersh R, Brower J, Gans S, Hartsell W, Goldman S, Chang JHC, Mohammed N, Siddiqui M, Gondi V, Christensen E, Klawikowski S, Garg A, McAleer M, Rhines L, Yang J, Brown P, Chang E, Settle S, Ghia A, Edson M, Fuller GN, Allen P, Li J, Garsa A, Badiyan S, Simpson J, Dowling J, Rich K, Chicoine M, Leuthardt E, Kim A, Robinson C, Gill B, Peskorski D, Lalonde R, Huq MS, Flickinger J, Graff A, Clerkin P, Smith H, Isaak R, Dinh J, Grosshans D, Allen P, de Groot J, McGovern S, McAleer M, Gilbert M, Brown P, Mahajan A, Gupta T, Mohanty S, Kannan S, Jalali R, Hardie J, Laack N, Kizilbash S, Buckner J, Giannini C, Uhm J, Parney I, Jenkins R, Decker P, Voss J, Hiramatsu R, Kawabata S, Furuse M, Niyatake SI, Kuroiwa T, Suzuki M, Ono K, Hobbs C, Vallow L, Peterson J, Jaeckle K, Heckman M, Bhupendra R, Horowitz D, Wuu CS, Feng W, Drassinower D, Lasala A, Lassman A, Wang T, Indelicato D, Rotondo R, Bradley J, Sandler E, Aldana P, Mendenhall N, Marcus R, Kabarriti R, Mourad WF, Mejia DM, Glanzman J, Patel S, Young R, Bernstein M, Hong L, Fox J, LaSala P, Kalnicki S, Garg M, Khatua S, Hou P, Wolff J, Hamilton J, Zaky W, Mahajan A, Ketonen L, Kim SH, Lee SR, Ji, Oh Y, Krishna U, Shah N, Pathak R, Gupta T, Lila A, Menon P, Goel A, Jalali R, Lall R, Lall R, Smith T, Schumacher A, McCaslin A, Kalapurakal J, Chandler J, Magnuson W, Robins HI, Mohindra P, Howard S, Mahajan A, Manfredi D, Rogers CL, Palmer M, Hillebrandt E, Bilton S, Robinson G, Velasco K, Mehta M, McGregor J, Grecula J, Ammirati M, Pelloski C, Lu L, Gupta N, Bell S, Moller S, Law I, Rosenschold PMA, Costa J, Poulsen HS, Engelholm SA, Morrison A, Cuglievan B, Khatib Z, Mourad WF, Kabarriti R, Young R, Santiago T, Blakaj DM, Welch M, Graber J, Patel S, Hong LX, Patel A, Tandon A, Bernstein MB, Shourbaji RA, Glanzman J, Kinon MD, Fox JL, Lasala P, Kalnicki S, Garg MK, Nicholas S, Salvatori R, Lim M, Redmond K, Quinones A, Gallia G, Rigamonti D, Kleinberg L, Patel S, Mourad W, Young R, Kabarriti R, Santiago T, Glanzman J, Bernstein M, Patel A, Yaparpalvi R, Hong L, Fox J, LaSala P, Kalnicki S, Garg M, Redmond K, Mian O, Degaonkar M, Sair H, Terezakis S, Kleinberg L, McNutt T, Wharam M, Mahone M, Horska A, Rezvi U, Melian E, Surucu M, Mescioglu I, Prabhu V, Clark J, Anderson D, Robbins J, Yechieli R, Ryu S, Ruge MI, Suchorska B, Hamisch C, Mahnkopf K, Lehrke R, Treuer H, Sturm V, Voges J, Sahgal A, Al-Omair A, Masucci L, Masson-Cote L, Atenafu E, Letourneau D, Yu E, Rampersaud R, Lewis S, Yee A, Thibault I, Fehlings M, Shi W, Palmer J, Li J, Kenyon L, Glass J, Kim L, Werner-wasik M, Andrews D, Susheela S, Revannasiddaiah S, Muzumder S, Mallarajapatna G, Basavalingaiah A, Gupta M, Kallur K, Hassan M, Bilimagga R, Tamura K, Aoyagi M, Ando N, Ogishima T, Yamamoto M, Ohno K, Maehara T, Xu Z, Vance ML, Schlesinger D, Sheehan J, Young R, Blakaj D, Kinon MD, Mourad W, LaSala PA, Hong L, Kalnicki S, Garg M, Young R, Mourad W, Patel S, Fox J, LaSala PA, Hong L, Graber JJ, Santiago T, Kalnicki S, Garg M, Zimmerman AL, Vogelbaum MA, Barnett GH, Murphy ES, Suh JH, Angelov L, Reddy CA, Chao ST. RADIATION THERAPY. Neuro Oncol 2013; 15:iii178-iii188. [PMCID: PMC3823902 DOI: 10.1093/neuonc/not187] [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: 09/23/2023] Open
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Wang T, Horowitz D, Zhong J, Kim A, Feng W, Deutsch I, Chao K. Selective Internal Radiation Therapy to the Liver: High Tumor Dose and Normal Liver Tolerance. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.863] [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: 11/25/2022]
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Bratman S, VanderVorst K, Feng W, Diehn M. Stromal Contributions to Radiation Resistance of Breast Cancer Stem Cells. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1673] [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: 11/27/2022]
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Kerr BA, McCabe NP, Feng W, Byzova TV. Platelets govern pre-metastatic tumor communication to bone. Oncogene 2013; 32:4319-24. [PMID: 23069656 DOI: 10.1038/onc.2012.447] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 08/07/2012] [Accepted: 08/09/2012] [Indexed: 12/22/2022]
Abstract
Although the survival rate for early detected cancers is high, once a cancer metastasizes to bone, it is incurable. Interestingly, patients without visible metastases display abnormal bone formation and resorption, suggesting a link between primary cancers and the bone microenvironment prior to metastasis, and this link likely facilitates preparation of the pre-metastatic niche. We hypothesized that communication with the primary tumor would result in bone remodeling alterations, and that platelets could facilitate this communication. By using three tumor models, we demonstrate that primary tumor growth stimulates bone formation measured by microcomputed tomography. Further, platelet depletion prevented tumor-induced bone formation, highlighting the importance of platelets in the communication between tumors and the bone microenvironment. Finally, we determine that platelets sequester a variety of tumor-derived proteins, TGF-β1 and MMP-1 in particular, which regulate bone formation. Thus, our data reveal that platelets function as mediators of tumor-bone communication prior to metastasis.
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Affiliation(s)
- B A Kerr
- Department of Molecular Cardiology, Joseph J. Jacobs Center for Thrombosis and Vascular Biology, Lerner Research Institute, The Cleveland Clinic, Cleveland, OH, USA
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Barve S, Rao R, Chaudhry K, Samak G, Gangwar R, Mir H, Bhargavi M, Isse T, Kawamoto T, Salaspuro M, Kaihovaara P, Kirpich I, Feng W, Wang Y, Liu Y, Barve S, McClain C, Zhou Z. S16 * GUT MICROBIOTA, INTESTINAL BARRIER FUNCTION, ENDOTOXEMIA AND ALCOHOLIC LIVER INJURY. Alcohol Alcohol 2013. [DOI: 10.1093/alcalc/agt087] [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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142
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Yang HX, Feng W, Wei JC, Zeng TS, Li ZD, Zhang LJ, Lin P, Luo RZ, He JH, Fu JH. Support vector machine-based nomogram predicts postoperative distant metastasis for patients with oesophageal squamous cell carcinoma. Br J Cancer 2013; 109:1109-16. [PMID: 23942069 PMCID: PMC3778272 DOI: 10.1038/bjc.2013.379] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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: 01/03/2013] [Revised: 04/25/2013] [Accepted: 06/24/2013] [Indexed: 12/18/2022] Open
Abstract
Background: We aim to develop effective models for predicting postoperative distant metastasis for oesophageal squamous cell carcinoma (OSCC) for the purpose of guiding tailored therapy. Methods: We used data from two centres to establish training (n=319) and validation (n=164) cohorts. All patients underwent curative surgical treatment. The clinicopathological features and 23 immunomarkers detected by immunohistochemistry were involved for variable selection. We constructed eight support vector machine (SVM)-based nomograms (SVM1–SVM4 and SVM1'–SVM4'). The nomogram constructed with the training cohort was tested further with the validation cohort. Results: The outcome of the SVM1 model in predicting postoperative distant metastasis was as follows: sensitivity, 44.7% specificity, 90.9% positive predictive value, 81.0% negative predictive value, 65.6% and overall accuracy, 69.5%. The corresponding outcome of the SVM2 model was as follows: 44.7%, 92.1%, 82.9%, 65.9%, and 70.1%, respectively. The corresponding outcome of the SVM3 model was as follows: 55.3%, 93.2%, 87.5%, 70.7%, and 75.6%, respectively. The SVM4 model was the most effective nomogram in prediction, and the corresponding outcome was as follows: 56.6%, 97.7%, 95.6%, 72.3%, and 78.7%, respectively.Similar results were observed in SVM1', SVM2', SVM3', and SVM4', respectively. Conclusion: The SVM-based models integrating clinicopathological features and molecular markers as variables are helpful in selecting the patients of OSCC with high risk of postoperative distant metastasis.
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Affiliation(s)
- H X Yang
- Department of Thoracic Surgery, Sun Yat-sen University Cancer Center, Guangzhou City, Guangdong Province 510060, China
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Zhou X, Gao Q, Feng W, Pan K. Immobilization of Yarrowia lipolyticaLipase on Bamboo Charcoal to Resolve ( R, S)-Phenylethanol in Organic Medium. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200672] [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: 11/08/2022]
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144
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Min S, Xiaoyan X, Fanghui P, Yamei W, Xiaoli Y, Feng W. The glioma-associated oncogene homolog 1 promotes epithelial--mesenchymal transition in human esophageal squamous cell cancer by inhibiting E-cadherin via Snail. Cancer Gene Ther 2013; 20:379-85. [PMID: 23788111 DOI: 10.1038/cgt.2013.36] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 05/19/2013] [Indexed: 02/06/2023]
Abstract
The glioma-associated oncogene homolog 1 (GLI1) family of zinc finger transcription factors is the nuclear mediator of the Hedgehog pathway that regulates genes essential for various stages of tumor development and progression. However, the role and mechanism by which high expression of GLI1 contributes to the invasion and metastasis of human esophageal squamous cell cancer (ESCC) has not been fully elucidated. In the present study, we demonstrated that GLI1 was over-expressed in human ESCC tissues, especially in ESCC tissues with deep invasion and lymph-node metastasis. Moreover, GLI1 was also over-expressed in ESCC cell lines and correlated with the aggressiveness of ESCC cell lines. In addition, GLI signaling pathway agonist purmorphamine could increase the invasion and metastasis ability of ESCC cells in vitro. There is increasing evidence for the contribution of epithelial-mesenchymal transition (EMT) to ESCC invasion and metastasis, therefore we investigated GLI1's role in EMT. Our results showed that high expression of GLI1 dampened expression of E-cadherin and enhanced the expression of Vimentin, and it also improved the expression of Snail, indicative of its role in EMT occurrence. Mechanistic studies showed that down-expression of Snail reversed GLI1 activation-regulated expression of EMT markers, suggesting the role of Snail in GLI1-mediated EMT. Taken together, our results had revealed that GLI1 could participate in the invasion and metastasis of ESCC through EMT. These studies indicated that in ESCC, GLI1 could be a useful target for cancer prevention and therapy.
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Affiliation(s)
- S Min
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Feng W, Meyerheim HL, Mohseni K, Brovko O, Stepanyuk VS, Jedrecy N, Felici R, Kirschner J. Misfit-induced modification of structure and magnetism in O/Fe(001)-p(1×1). Phys Rev Lett 2013; 110:235503. [PMID: 25167511 DOI: 10.1103/physrevlett.110.235503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/08/2013] [Indexed: 06/03/2023]
Abstract
The geometry of oxygen atoms in hollow sites of Fe nanoislands (⊘≈1-2 nm) on Fe(001) is modified by mesoscopic misfit-induced relaxations of the island atoms. Surface x-ray diffraction, scanning tunneling microscopy, and ab initio calculations indicate a 0.3 Å increased adsorption height [0.7 Å versus 0.4 Å in O/Fe(001)-p(1×1)] of O atoms going in parallel with a reduced Fe-Fe layer spacing inducing a reduction of the surface magnetic moment (2.85μ(B) versus 3.2μ(B)). Our results demonstrate the importance of the mesoscopic misfit for surface physical properties in general.
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Affiliation(s)
- W Feng
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - H L Meyerheim
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - K Mohseni
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - O Brovko
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - V S Stepanyuk
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
| | - N Jedrecy
- Institut des Nano Sciences de Paris, UPMC-Sorbonne Universités, CNRS-UMR7588, 75005 Paris, France
| | - R Felici
- ESRF, B.P. 220, F-38043 Grenoble Cedex, France
| | - J Kirschner
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany
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Chu A, Feng W, Lincoln H, Su F, Nath R. SU-E-T-118: Small Dynamic Field Dosimetry by Gfachromic Film (EBT3) and 2D-Array Diode. Med Phys 2013. [DOI: 10.1118/1.4814553] [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: 11/07/2022] Open
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147
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Chu A, Deng J, Feng W, Chen Z, Ahmad M, Nath R. SU-E-T-100: The Influence Edge Electrons in Small Fields: Emphasis by the Difference of Copper-Cerrobend Cutout. Med Phys 2013. [DOI: 10.1118/1.4814535] [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: 11/07/2022] Open
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Feng W, Xuan Y, Chu A, Hu J. WE-C-116-12: Camer-Rao Lower Bound Analysis of 1H Magnetic Resonance Spectroscopic Imaging for Breast with Singular Value Decomposition, LCModel and QUEST. Med Phys 2013. [DOI: 10.1118/1.4815574] [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: 11/07/2022] Open
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149
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Chang J, Newman G, DeWyngaert K, Feng W. TH-C-116-01: Managing Treatment Planning Systems. Med Phys 2013. [DOI: 10.1118/1.4815794] [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: 11/07/2022] Open
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150
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Cai B, Zhang J, Zhang M, Li L, Feng W, An Z, Wang L. Micro-inflammation Characterized by Disturbed Treg/Teff Balance with Increasing sIL-2R in Patients with Type 2 Diabetes. Exp Clin Endocrinol Diabetes 2013; 121:214-9. [PMID: 23595796 DOI: 10.1055/s-0033-1333687] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- B. Cai
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
| | - J. Zhang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
| | - M. Zhang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
| | - L. Li
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
| | - W. Feng
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
| | - Z. An
- Department of Endocrinology, West China Hospital of Sichuan University, Sichuan, P.R. China
| | - L. Wang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Sichuan, P.R. China
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