2201
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Wang W, Liu Z, Li Y. The Magnitude Of Tumor Motion Is Different For Tumors Located In Various Locations Within The Liver In Postoperative Patients With Primary Liver Cancers. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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2202
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Wu R, Hu X, Jiang Z, Wang W, Xu Y, Chen H, Wang J. A novel chemically defined pre-condition for human menstrual blood-derived stem cells. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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2203
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Feng M, Lang J, Fan Z, Li J, Li T, Wen H, Wang J, Wang J, Wang J, Wang W. Long-term Effect and Prognostic Factors of 582 Nasopharyngeal Carcinoma Patients Treated with Intensity Modulated Radiotherapy. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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2204
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An X, Pan Y, Yin J, Zhang X, Gong H, Yang Y, Wang W. Functional organizations underlying illusory and kinetic contour processing in early visual cortices V1 and V2 of macaques. J Vis 2011. [DOI: 10.1167/11.11.1043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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2205
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Pan Y, An X, Yin J, Zhang X, Gong H, Yang Y, Wang W. Functional organizations underlying illusory and kinetic contour processing in extrastriate visual cortex V4d of macaques. J Vis 2011. [DOI: 10.1167/11.11.1053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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2206
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Barascuk N, Vassiliadis E, Zheng Q, Wang Y, Wang W, Larsen L, Rasmussen LM, Karsdal MA. Levels of Circulating MMCN-151, a Degradation Product of Mimecan, Reflect Pathological Extracellular Matrix Remodeling in Apolipoprotein E Knockout Mice. Biomark Insights 2011; 6:97-106. [PMID: 22084568 PMCID: PMC3201086 DOI: 10.4137/bmi.s7777] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIM Arterial extracellular matrix (ECM) remodeling by matrix metalloproteinases (MMPs) is one of the major hallmarks of atherosclerosis. Mimecan, also known as osteoglycin has been implicated in the integrity of the ECM. This study assessed the validity of an enzyme-linked immunosorbent assay (ELISA) developed to measure a specific MMP12-derived fragment of mimecan, MMCN-151, in apolipoprotein-E knockout (ApoE-KO) mice. METHODS AND RESULTS A mouse monoclonal antibody raised against MMCN-151 was used to develop a competitive ELISA. The assay was validated using samples from 20 ApoE-KO and 20 wild type [C57 BL/6] male mice fed a normal or high-fat diet (HFD) for up to 20 weeks. The technical reliability of the assay was established with intra-assay variability <2% and inter-assay variability <10%. The lowest limit of quantification of MMCN-151 was 0.5 ng/ml. ApoE-KO mice fed a HFD for 20 weeks had four-fold increased circulating levels of MMCN-151 compared to baseline, whereas MMCN-151 levels in control mice on HFD increased two-fold compared with baseline. After 10 weeks of a HFD, a significant difference in MMCN-151 levels was observed between ApoE-KO and control mice (P = 0.005) and became more significant at 20 weeks (P = 0.002). CONCLUSIONS The newly developed assay is a reliable detector of MMCN-151 levels which ultimately may be useful indicators of arterial remodeling in patients affected by atherosclerotic disease.
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2207
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Lu J, Wang X, Wang W, Muniyappa H, Hu C, Mitra S, Long B, Das K, Mehta JL. LOX-1 abrogation reduces cardiac hypertrophy and collagen accumulation following chronic ischemia in the mouse. Gene Ther 2011; 19:522-31. [PMID: 21938018 DOI: 10.1038/gt.2011.133] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We hypothesized that lectin-like oxidized LDL receptor-1 (LOX-1) deletion may inhibit oxidative stress signals, reduce collagen accumulation and attenuate cardiac remodeling after chronic ischemia. Activation of LOX-1 plays a significant role in the development of inflammation, apoptosis and collagen signals during acute ischemia. Wild-type and LOX-1 knockout (KO) mice were subjected to occlusion of left coronary artery for 3 weeks. Markers of cardiac hypertrophy, fibrosis-related signals (collagen IV, collagen-1 and fibronectin) and oxidant load (nicotinamide adenine dinucleotide phosphate oxidase expression, activity of mitogen-activated protein kinases and left ventricular (LV) tissue thiobarbituric acid reactive substances) were analyzed. In in vitro experiments, HL-1 cardiomyocytes were transfected with angiotensin II (Ang II) type 1 receptor (AT1R) or type 2 receptor (AT2R) genes to determine their role in the cardiomyocyte hypertrophy. LOX-1 KO mice had 25% improvement in survival over the 3-week period of chronic ischemia. LOX-1 deletion reduced collagen deposition and cardiomyocyte hypertrophy (∼75%) in association with a decrease in oxidant load and AT1R upregulation (all P<0.05). The LOX-1 KO mice hearts exhibited a disintegrin and metalloproteinase 10 (ADAM10) and a disintegrin and metalloproteinase 17 (ADAM17) expression and matrix metalloproteinase 2 activity, and increased AT2R expression (P<0.05). Attenuation of cardiac remodeling was associated with improved cardiac hemodynamics (LV ±dp/dt and cardiac ejection fraction). In vitro studies showed that it is AT1R, and not AT2R overexpression that induces cardiomyocyte hypertrophy. We demonstrate for the first time that LOX-1 deletion reduces oxidative stress and related intracellular signaling, which leads to attenuation of the positive feedback loop involving AT1R and LOX-1. This results in reduced chronic cardiac remodeling.
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2208
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Maurer T, Garrenton L, Oh A, Pitts K, Skelton N, Fauber B, Pan B, Malek S, Stokoe D, Bowman K, Wu J, Giannetti A, Starovasnik M, Mellman I, Jackson P, Rudolph J, Wang W, Fang G. Abstract IA24: Drugging the undruggable: Small-molecule inhibition of Ras oncoprotein. Cancer Res 2011. [DOI: 10.1158/1538-7445.fbcr11-ia24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Ras is a nucleotide-dependent switch that converts from an inactive GDP-bound state to an active GTP-bound state when activated by guanine nucleotide exchange factors, such as SOS. Active RasGTP then binds to and activates downstream signaling effectors. Ras is the most frequently mutated oncogene and hyperactive mutant Ras constitutively signals to effectors to promote cell survival, proliferation and metastasis. Thus, Ras oncoprotein has been considered by the cancer community to be one of the most important oncology drug targets. Despite the enormous interest and extensive exploratory efforts in industry and academia, small molecules that bind to Ras in a well-defined manner and exert inhibitory effects have not been uncovered to date. We report here the identification and characterization of small-molecule inhibitors of the Ras oncoprotein.
To explore a new means of directly targeting Ras, we used a fragment-based lead discovery approach via an NMR-based screen. Hits from the fragment screen were characterized for their interactions with Ras by NMR and X-ray crystallography and for their effects on Ras activation and signaling in reconstituted biochemical assays in vitro and in cellular assays in vivo. From the fragment-based screen, we identified a group of small molecules that each bind to a common site adjacent to the switch I/II regions in the Ras protein. X-ray crystallography studies of three compound-Ras complexes indicate that the binding site can be expanded upon ligand binding. Nucleotide exchange factors, notably SOS, are required to convert inactive RasGDP to active RasGTP. We determined that the compound-binding site is located at the interface of Ras and SOS. A subset of our Ras-binding molecules indeed inhibited SOS-mediated nucleotide exchange. Further mechanistic studies revealed that through steric hindrance the compounds block the formation of the Ras-SOS complex, a key intermediate of the exchange reaction. At the cellular level, our compounds inhibit the formation of active RasGTP and prevent Ras signaling to downstream effectors. To define the potential clinic utility of these compounds, we performed biological characterization of Ras-driven tumors and identified a subset of Ras mutant tumors that depend on nucleotide exchange factors for the activation of Ras, suggesting a specific profile for the use of exchange inhibitors.
We conclude that the compounds act as competitive inhibitors of nucleotide exchange to prevent the activation of Ras. The discovery of a binding pocket on Ras with functional significance represents a breakthrough finding that will offer a new direction for therapeutic intervention of Ras. Our findings provide new opportunities to target the “undruggable” Ras oncoprotein.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the Second AACR International Conference on Frontiers in Basic Cancer Research; 2011 Sep 14-18; San Francisco, CA. Philadelphia (PA): AACR; Cancer Res 2011;71(18 Suppl):Abstract nr IA24.
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2209
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Liu Y, Zhu T, Cai G, Qin Y, Wang W, Tang G, Zhao D, Shen Q. Elevated circulating CD4+ ICOS+ Foxp3+ T cells contribute to overproduction of IL-10 and are correlated with disease severity in patients with systemic lupus erythematosus. Lupus 2011; 20:620-7. [PMID: 21558138 DOI: 10.1177/0961203310392431] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, we aimed to investigate the frequency, possible categories and clinical significance of circulating CD4+ ICOS+ FoxP3+ T cells in patients with systemic lupus erythematosus (SLE). The frequency of circulating CD4+ ICOS+ FoxP3+ T cells was analysed by flow-cytometric analysis in 32 SLE patients, 10 rheumatoid arthritis patients and 32 healthy controls. Production of IL-10 and mTGF-β by different CD4+ T-cell populations was determined by intracellular cytokine staining. Plasma levels of IL-10 and TGF-β were determined by enzyme-linked immunosorbent assay (ELISA). The frequency of circulating CD4+ ICOS+ FoxP3+ T cells was significantly increased in SLE patients as compared with control groups. The elevated frequency of CD4+ ICOS+ FoxP3+ T cells had a positive correlation with SLE Disease Activity Index (SLEDAI) scores and serum anti-dsDNA but a negative correlation with serum C3. Additionally, the CD4+ ICOS+ Foxp3+ T cells contained significantly higher percentages of IL-10-producing cells than CD4+ ICOS- Foxp3+ T cells. A significant positive correlation was also observed between the frequency of CD4+ ICOS+ Foxp3+ T cells and the plasma level of IL-10 in SLE patients. In conclusion, an increased frequency of circulating CD4+ ICOS+ Foxp3+ T cells was observed in patients with SLE, suggesting its potential importance in the immunopathogenesis of SLE. Analysis of the CD4+ ICOS+ FoxP3+ T-cell population may be useful for the evaluation of lupus disease severity.
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2210
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Masoud W, Wang W, Clanachan A, Lopaschuk G. 299 Inefficient energy utilization in failing remodeled mouse hearts following coronary artery ligation. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
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2211
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Ren Y, Zhang X, Li L, Wang W. Improved fixation technique reduces time consuming and increases fish efficiency. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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2212
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Tang Y, Wang W, Ni L, Liu HC. A modified protocol for in vitro maturation of mouse oocytes from secondary preantral follicles. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2213
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Wang W, Wang X, Wang S. 110 Titanium plate fixation in sternal dehiscence after open heart surgery. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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2214
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Wang W, Ni L, Tang Y, Liu HC, Rosenwaks Z. In vitro male gametogenesis directed by positive induction and negative selection. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2215
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Guo⁎ K, Wang W, Liu F, Zhang Z, Xu J, Zoccarato I. Study on the anti-oxidative function of effective components of some traditional Chinese medicines. Eur J Pharmacol 2011. [DOI: 10.1016/j.ejphar.2011.09.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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2216
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Wei A, Wang W, Wang Y, Wang J, Gao J, Sun Y. UP-02.058 A New Approach of Renal Hilum Control in Retroperitoneoscopic Radical Nephrectomy. Urology 2011. [DOI: 10.1016/j.urology.2011.07.876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2217
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Wang W, Tang Y, Ni L, Liu HC. Derivation of fetus-specific embryonic stem cells from blastomeres. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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2218
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Wang W, Wang X, Modry D, Wang S. 478 The safety of laser-assisted lead extraction with cardiopulmonary bypass standby. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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2219
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Butterly S, Thompson A, Wang W. 543 Diastolic dysfunction is not associated with acute systolic dysfunction in patients presenting with takotsubo cardiomyopathy. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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2220
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Fang G, Maurer T, Garrenton L, Skelton N, Fauber B, Malek S, Giannetti A, Jackson P, Rudolph J, Wang W. Drugging the Undruggable Small-molecule Inhibition of Ras Oncoprotein. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70114-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2221
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Wang W, Xu D, Li Y, Guan Y, Sun X, Chen Y, Kesari R, Huang C, Li W, Zhan Y, Zhou Z. Tumor–ratio–metastasis staging system as an alternative to the 7th edition UICC TNM system in gastric cancer after D2 resection—results of a single-institution study of 1343 Chinese patients. Ann Oncol 2011; 22:2049-2056. [DOI: 10.1093/annonc/mdq716] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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2222
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McLean A, Heleski C, Yokoyama M, Wang W. Evaluating learning theory in donkeys (Equus asinus) while measuring heart rate variability and behavior when teaching donkeys to work to a cart. J Vet Behav 2011. [DOI: 10.1016/j.jveb.2011.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2223
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Hudis C, Hermann R, Makari-Judson G, Isaacs C, Beck J, Kaklamani V, Rugo H, Wang W, Li S, Schwartzberg L. 5026 POSTER DISCUSSION Sorafenib (SOR) Plus Chemotherapy (CRx) for Treatment (tx) of Patients (pts) With HER2-negative Locally Advanced (adv) or Metastatic (met) Breast Cancer (BC) and Prior Bevacizumab (BEV): Subgroup Analysis of AC01B07. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71468-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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2224
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Bentley JA, Ramanathan AK, Arnold GP, Wang W, Abboud RJ. Harmful cleats of football boots: a biomechanical evaluation. Foot Ankle Surg 2011; 17:140-4. [PMID: 21783074 DOI: 10.1016/j.fas.2010.04.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 03/22/2010] [Accepted: 04/03/2010] [Indexed: 02/04/2023]
Abstract
BACKGROUND Football players wear boots of varying cleat designs with some preferring the bladed cleats while others opting for the conventional studded cleats. The current study compares biomechanically the boots with differing cleat designs and their effect on feet, if any. METHODS Twenty-nine healthy male volunteers were recruited from amateur football teams. They were asked to perform three trials each of two activities: a straight run and a run cutting at a 60° angle wearing bladed and studded Adidas®-F series boots on artificial turf. Plantar pressure values were recorded using the Pedar®-X in-shoe pressure measuring device. Peak pressure and pressure-time integral were analysed over 11 clinically relevant areas under the foot. RESULTS While the in-shoe pressure and pressure-time integral were higher under the medial half of the foot with studded boots, they were higher under the lateral half of the foot with the bladed design. CONCLUSIONS The studded boots can be considered safer as the pressure distribution across the foot and the pattern of centre of pressure progression mimicked the normal motif, whereas the bladed boots could potentially be deemed relatively more harmful due to the unnatural increased loading under the lateral half of the foot, predisposing the foot to injuries.
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2225
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Zhang H, Guo Y, Wang W, Yu X, Yao Z. Associations of FLG mutations between ichthyosis vulgaris and atopic dermatitis in Han Chinese. Allergy 2011; 66:1253-4. [PMID: 21496060 DOI: 10.1111/j.1398-9995.2011.02597.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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