2426
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Lee J, Kim PS, Sun JM, Liu L, Park SH, Fithian A, Park JO, Magonova K, Lim HY, Liu X, Singh S, Kang WK. Profiling signal transduction pathways in ascites tumor cells of gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2427
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Kim HC, Kim PS, Princen F, Meyer G, Webster E, Brown S, Kirkland R, Zhou J, Triggs C, Liu X, Singh S. A comprehensive profiling of colorectal cancer patients through multiplexed functional pathway signature and somatic mutation analysis for effective therapy selection. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2428
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Donehower RC, Scardina A, Hill M, Bowman J, Newton RC, Liu X, Scherle P, Wang Q, Diamond S, Boer J, Lee F, Gau T, Burris HA, Bendell JC, Jones SF, Infante JR. A phase I dose-escalation study of INCB028060, an inhibitor of c-MET receptor tyrosine kinase, in patients with advanced solid tumors. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2429
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Zhu J, Wang J, Bai H, Zhao J, Wang Z, Zhuo M, An T, Duan J, Yang L, Wu M, Guo Q, Liu X, Wang S, Wang Y. Effect of wnt aberrant methylation and epidermal growth factor receptor pathway mutation on responsiveness of non-small cell lung cancer to gefitinib and erlotinib. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e18011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2430
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Ahsen OV, Kim PS, Politz O, Lee TAT, Harvie G, Barham R, Leesman G, Liu X, Ziegelbauer K, Singh S, Krahn T. Molecular pathway profiling as a tool for personalized medicine. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2431
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Wang F, Wang J, Bai H, Zhao J, Wang Z, Zhuo M, An T, Duan J, Yang L, Wu M, Wang Y, Wang S, Liu X. An evaluation of phosphorylated EGFR expression in predicting outcome of EGFR-TKI therapy for the advanced NSCLC patients with EGFR wild type. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2432
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Wang J, Chen K, Bai H, Zhao J, Wang Z, Zhuo M, An T, Duan J, Yang L, Wu M, Guo Q, Liu X, Wang S, Wang Y. Chemotherapy influence EGFR mutation status for Chinese patients with regionally advanced non-small cell lung cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2433
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Yuan S, Yang G, Ma L, Zhao S, Yang W, Zhang W, Han D, Liu X, Liu T, Yu J. The predicting value of FETNIM PET/CT during radiotherapy for local control in patients with esophageal cancer: Initial observation. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2434
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Hoe N, Park K, Um S, Liu X, Kim PS, Kirkland R, Lee TAT, Zhou J, Nguyen A, Ma Y, Ahn M, Singh S. Selection of targeted agent(s) based on matching differential protein expression and mutational profile in NSCLC patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2435
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Zhang L, Shenglin M, Song X, Han B, Cheng Y, Huang C, Yang S, Liu X, Yun-Peng L, Wang M, Zhang X. Efficacy, tolerability, and biomarker analyses from a phase III, randomized, placebo-controlled, parallel group study of gefitinib as maintenance therapy in patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) (INFORM; C-TONG 0804). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.lba7511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2436
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Kang I, Rasras M, Liu X, Chandrasekhar S, Cappuzzo M, Gomez LT, Chen YF, Buhl L, Cabot S, Jaques J. All-optical OFDM transmission of 7 x 5-Gb/s data over 84-km standard single-mode fiber without dispersion compensation and time gating using a photonic-integrated optical DFT device. OPTICS EXPRESS 2011; 19:9111-9117. [PMID: 21643165 DOI: 10.1364/oe.19.009111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We implement dispersion-tolerant and time-gating-free all-optical OFDM transmission using a photonic-integrated discrete Fourier transform (DFT) device. We show that 35-Gb/s OFDM data having near-unity spectral efficiency can be transmitted all-optically with 1-dB dispersion margin of ~1000 ps/nm. The passive-optical DFT circuit is implemented using multi-mode interference (MMI) couplers on a high index-contrast silica integrated-optic platform. We also propose a photonic DFT circuit based on an NxN MMI device capable of simultaneous channelization of OFDM signals into N subcarriers.
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2437
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Gu J, Liu X, Wang X, Shi H, Tan H, Zhou L, Gu J, Jiang W, Wang Y. Beneficial effect of pioglitazone on the outcome of catheter ablation in patients with paroxysmal atrial fibrillation and type 2 diabetes mellitus. Europace 2011; 13:1256-61. [DOI: 10.1093/europace/eur131] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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2438
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Lai W, Deng WP, Liu X, Chen HM, Dai SX. A recurrent p. A353V mutation in DKC1 responsible for different phenotypes of dyskeratosis congenita in a Chinese family. J Dermatol Sci 2011; 63:122-4. [PMID: 21601430 DOI: 10.1016/j.jdermsci.2011.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Revised: 04/03/2011] [Accepted: 04/19/2011] [Indexed: 11/26/2022]
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2439
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Wang RR, Wang HL, Liu X, Xu CC. Effects of Different Additives on Fermentation Characteristics and Protein Degradation of Green Tea Grounds Silage. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2011. [DOI: 10.5713/ajas.2011.10346] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2440
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Jeter CR, Liu B, Liu X, Chen X, Liu C, Calhoun-Davis T, Repass J, Zaehres H, Shen JJ, Tang DG. NANOG promotes cancer stem cell characteristics and prostate cancer resistance to androgen deprivation. Oncogene 2011; 30:3833-45. [PMID: 21499299 PMCID: PMC3140601 DOI: 10.1038/onc.2011.114] [Citation(s) in RCA: 280] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cancer cell molecular mimicry of stem cells (SC) imbues neoplastic cells with enhanced proliferative and renewal capacities. In support, numerous mediators of SC self-renewal have been evinced to exhibit oncogenic potential. We have recently reported that shRNA-mediated knockdown of the embryonic stem cell (ESC) self-renewal gene NANOG significantly reduced the clonogenic and tumorigenic capabilities of various cancer cells. In this study, we sought to test the potential pro-tumorigenic functions of NANOG, particularly, in prostate cancer (PCa). Using quantitative RT-PCR, we first confirmed that PCa cells expressed NANOG mRNA primarily from the NANOGP8 locus on chromosome 15q14. We then constructed a lentiviral promoter reporter in which the -3.8 kb NANOGP8 genomic fragment was used to drive the expression of green fluorescence protein (GFP). We observed that NANOGP8-GFP+ PCa cells exhibited cancer stem cell (CSC) characteristics such as enhanced clonal growth and tumor regenerative capacity. To further investigate the functions and mechanisms of NANOG in tumorigenesis, we established tetracycline-inducible NANOG overexpressing cancer cell lines, including both prostate (Du145 and LNCaP) and breast (MCF-7) cancer cells. NANOG induction promoted drug-resistance in MCF-7 cells, tumor regeneration in Du145 cells, and, most importantly, castration-resistant tumor development in LNCaP cells. These pro-tumorigenic effects of NANOG were associated with key molecular changes, including an upregulation of molecules such as CXCR4, IGFBP5, CD133 and ALDH1. The present gain-of-function studies, coupled with our recent loss-of-function work, establish the integral role for NANOG in neoplastic processes and shed light on its mechanisms of action.
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2441
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Liu X, Gu W, Guo X, Ge X, Chen Y, Yang H. Prevalence of torque teno virus infection in pig herds in China. Vet Rec 2011; 168:410. [PMID: 21493453 DOI: 10.1136/vr.c6864] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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2442
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Shouse GP, Nobumori Y, Panowicz MJ, Liu X. ATM-mediated phosphorylation activates the tumor-suppressive function of B56γ-PP2A. Oncogene 2011; 30:3755-65. [PMID: 21460856 DOI: 10.1038/onc.2011.95] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Protein phosphatase 2A (PP2A) is a family of heterotrimeric protein phosphatases that has a multitude of functions inside the cell, acting through various substrate targets in cell-signaling pathways. Recent evidence suggests that a subset of PP2A holoenzymes function as tumor suppressors and one particular family of B subunits, B56, are implicated in this function. However, the regulatory mechanisms that govern activation of B56-PP2A tumor-suppressive function have not been elucidated. In the present study, we demonstrate that ataxia-telangiectasia mutated (ATM) directly phosphorylates and specifically regulates B56γ3, B56γ2 and B56δ, after DNA damage. We further show that phosphorylation of B56γ3 at Ser510 leads to an increase in B56γ3-PP2A complexes, and direction of PP2A phosphatase activity toward the substrate p53, activating its tumor-suppressive functions. In addition, we found that under cell growth conditions B56γ3 is kept at low levels through the actions of the E3 ubiquitin ligase MDM2, and, importantly, phosphorylation of B56γ3 by ATM leads to upregulation of the protein by blocking MDM2-mediated B56γ3 ubiquitination. Finally, we show that Ser510 phosphorylation significantly enhances the ability of B56γ3 to inhibit cell proliferation and anchorage-independent growth. These results provide mechanistic insight into the regulation of PP2A tumor-suppressive function, and suggest a model for parallel regulation of p53 and B56γ3.
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2443
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Power B, Liu X, Germaine KJ, Ryan D, Brazil D, Dowling DN. Alginate beads as a storage, delivery and containment system for genetically modified PCB degrader and PCB biosensor derivatives of Pseudomonas fluorescens F113. J Appl Microbiol 2011; 110:1351-8. [PMID: 21395945 DOI: 10.1111/j.1365-2672.2011.04993.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2444
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Gao J, Fong D, Liu X. Mathematical analyses of casino rebate systems for VIP gambling. INTERNATIONAL GAMBLING STUDIES 2011. [DOI: 10.1080/14459795.2011.552575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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2445
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Lo CW, Liu X, Subramanian R, Tobita K, Tsuchya M, Kim A, Leatherubry L, Devine W, Kim Y, Anderton S, Wong L, Chang C, Ramirez R. High Throughput Congenital Heart Disease Phenotyping in Mice with Noninvasive Fetal Echocardiography. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.181.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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2446
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Kasichayanula S, Chang M, Hasegawa M, Liu X, Yamahira N, LaCreta FP, Imai Y, Boulton DW. Pharmacokinetics and pharmacodynamics of dapagliflozin, a novel selective inhibitor of sodium-glucose co-transporter type 2, in Japanese subjects without and with type 2 diabetes mellitus. Diabetes Obes Metab 2011; 13:357-65. [PMID: 21226818 DOI: 10.1111/j.1463-1326.2011.01359.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
AIMS Dapagliflozin, a selective, orally active inhibitor of the renal sodium-glucose co-transporter type 2 (SGLT2) is in development for the treatment of type 2 diabetes mellitus (T2DM). Here, the pharmacokinetics (PK) and pharmacodynamics (PD) of dapagliflozin were evaluated in healthy Japanese subjects and in Japanese subjects with T2DM. METHODS Two studies were conducted: a single-ascending dose (SAD) study (2.5-50 mg) in 32 healthy subjects and a multiple-ascending dose (MAD) study (2.5-20 mg QD for 14 days) in 36 subjects with T2DM. Safety and tolerability were assessed in both studies. Single and multiple dose PK of dapagliflozin and its inactive major metabolite, dapagliflozin 3-O-glucuronide, and PD (urinary glucose parameters) were characterized. Plasma glucose parameters were assessed over 14 days in the MAD study. RESULTS No serious adverse events or discontinuations due to adverse events occurred in either study. In healthy and T2DM subjects, dapagliflozin was rapidly absorbed with a time to maximum plasma concentration of 0.5-1.3 h. Systemic exposure of dapagliflozin and dapagliflozin 3-O-glucuronide, measured by maximum plasma concentration and area under the plasma concentration-time curve, increased proportional to dose. On a molar basis, systemic exposure to dapagliflozin 3-O-glucuronide was similar to parent dapagliflozin. There was a dose-related increase in the amount of glucose excreted in the urine (SAD and MAD), which was associated with dose-related decreases in plasma glucose parameters in subjects with T2DM (MAD). CONCLUSIONS Dapagliflozin was well tolerated and showed predictable dose-proportional PK and PD parameters in both healthy and T2DM Japanese subjects.
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2447
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Ni G, Liu W, Huang X, Zhu S, Yue X, Chen Z, Chen M, Liu X, Xu G. Increased levels of circulating SDF-1α and CD34+ CXCR4+ cells in patients with moyamoya disease. Eur J Neurol 2011; 18:1304-9. [DOI: 10.1111/j.1468-1331.2011.03393.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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2448
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Wang H, Ye L, Yu L, Xie G, Cheng B, Liu X, Jin Y, Wu S, Zhu T, Chen Q, Fang X. Performance of sequential organ failure assessment, logistic organ dysfunction and multiple organ dysfunction score in severe sepsis within Chinese intensive care units. Anaesth Intensive Care 2011; 39:55-60. [PMID: 21375090 DOI: 10.1177/0310057x1103900108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study assessed the performance of Sequential Organ Failure Assessment, Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score in outcome prediction in severe sepsis. A total of 528 consecutive patients with a diagnosis of severe sepsis were enrolled from two surgical intensive care units of university hospitals in China. Clinical and laboratory data of patients were collected and admission and maximum values of each scoring system were calculated. Areas under the receiver operating characteristic curve, which were used to assess discrimination, were 0.80, 0.83 and 0.74 for admission Sequential Organ Failure Assessment, Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score respectively, and 0.91, 0.93 and 0.86 for corresponding maximum values respectively. Calibration assessed by the Hosmer-Lemeshow statistic was better with admission (chi2 = 18.2) and maximum Logistic Organ Dysfunction Score (chi2 = 19.6) than with admission (chi2 = 98.1) and maximum Multiple Organ Dysfunction Score (chi2 = 30.9). Brier Scores, indicating the overall performance of the scores, were 0.18, 0.17 and 0.22 for admission Sequential Organ Failure Assessment, Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score respectively, and 0.12, 0.10 and 0.15 for their maximum counterparts respectively. This study found good performance of both admission Sequential Organ Failure Assessment and Logistic Organ Dysfunction Score in severe sepsis, and a slightly weaker performance of admission Multiple Organ Dysfunction Score. Since poor calibration was observed in Logistic Organ Dysfunction Score and Multiple Organ Dysfunction Score, we suggest further study of customisation of these scores in critical illness with severe sepsis.
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2449
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Liu X, Hajnóczky G. Altered fusion dynamics underlie unique morphological changes in mitochondria during hypoxia-reoxygenation stress. Cell Death Differ 2011; 18:1561-72. [PMID: 21372848 DOI: 10.1038/cdd.2011.13] [Citation(s) in RCA: 186] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Functional states of mitochondria are often reflected in characteristic mitochondrial morphology. One of the most fundamental stress conditions, hypoxia-reoxygenation has been known to cause impaired mitochondrial function accompanied by structural abnormalities, but the underlying mechanisms need further investigation. Here, we monitored bioenergetics and mitochondrial fusion-fission in real time to determine how changes in mitochondrial dynamics contribute to structural abnormalities during hypoxia-reoxygenation. Hypoxia-reoxygenation resulted in the appearance of shorter mitochondria and a decrease in fusion activity. This fusion inhibition was a result of impaired ATP synthesis rather than Opa1 cleavage. A striking feature that appeared during hypoxia in glucose-free and during reoxygenation in glucose-containing medium was the formation of donut-shaped (toroidal) mitochondria. Donut formation was triggered by opening of the permeability transition pore or K(+) channels, which in turn caused mitochondrial swelling and partial detachment from the cytoskeleton. This then favored anomalous fusion events (autofusion and fusion at several sites among 2-3 mitochondria) to produce the characteristic donuts. Donuts effectively tolerate matrix volume increases and give rise to offspring that can regain ΔΨ(m). Thus, the metabolic stress during hypoxia-reoxygenation alters mitochondrial morphology by inducing distinct patterns of mitochondrial dynamics, which includes processes that could aid mitochondrial adaptation and functional recovery.
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2450
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Lin XX, Li YT, Liu F, Liu BC, Du F, Wang SJ, Chen LM, Zhang L, Zheng Y, Liu X, Liu XL, Wang ZH, Ma JL, Wei ZY, Zhang J. Note: Diagnosing femtosecond laser-solid interactions with monochromatic Kα imager and x-ray pinhole camera. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:036104. [PMID: 21456806 DOI: 10.1063/1.3567014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
An x-ray pinhole camera and a monochromatic K(α) imager are used to measure the interactions of intense femtosecond laser pulses with Cu foil targets. The two diagnostics give different features in the spot size and the laser energy scaling, which are resulted from different physical processes. Under our experimental conditions, the K(α) emission is mainly excited by the fast electrons transporting inside the cold bulk target. In contrast, the x-ray pinhole signals are dominated by the broadband thermal x-ray emission from the hot plasma at the front target surface.
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