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Yang KQ, Qu WW, Liu X, Liu HX, Hou LQ. First Report of Pantoea agglomerans Causing Brown Apical Necrosis of Walnut in China. PLANT DISEASE 2011; 95:773. [PMID: 30731926 DOI: 10.1094/pdis-01-11-0060] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Brown apical necrosis (BAN) of walnut (Juglans regia L.) causes premature fruit drop and yield losses and has been reported to be an important walnut production problem in Spain, Italy, France, and Turkey (1,2). A number of organisms have been associated with BAN on walnut: Xanthomonas arboricola pv. juglandis, Fusarium spp., and Alternaria spp. (3). Since the spring of 2007, BAN was observed in 50 to 60% of the trees in walnut orchards in Taian City and Laiwu City, Shandong Province, China. Surface-disinfested tissue from premature walnut fruits was placed onto potato dextrose agar. Alternaria spp., X. arboricola pv. juglandis, and Pantoea agglomerans (formerly Enterobacter agglomerans) were isolated 76, 35, and 45% of the time, respectively. The P. agglomerans cultures formed a yellow lawn and were rod shaped with the body length of 1.5 to 3.0 μm, width of 0.5 to 1.0 μm, and four to six flagella. In biochemical tests, these bacteria were gram negative, lactose positive, and indole negative. Genomic DNA was extracted from one HXJ isolate and the 16S rRNA gene sequence (GenBank Accession No. HM016799) was obtained using universal primers 27F and 1492R. HM016799 had 99% sequence identity with P. agglomerans accessions in GenBank (GU477762, GQ494018, FJ756355, and AB004757). To confirm pathogenicity, HXJ isolate (108 CFU·ml-1) was inoculated at the bottom of the stigma within 5 days after florescence (DAF) and in premature fruit wounded with a needle within 30 DAF in 2008 to 2010. Stigmas injected with only sterile water served as controls. The bacteria were inoculated into three replicate 9-year-old plants of the walnut cv. Xiangling. Forty nuts on each plant were inoculated. The plants were grown in Shandong Province, China (36°09'59″N, 117°13'30″E). Ten days after inoculation, typical internal BAN symptoms were observed on all treated nuts and the controls were still healthy. In the inoculated stigmas, necrosis of stigma and style spread to internal tissues and reached the kernel. In treated premature fruit, internal tissues became necrotic and blackish and eventually led to nut drop. The same bacterium was reisolated from the inoculated tissue. On the basis of morphological, physiological, and biochemical characteristics and sequencing of the 16S rRNA gene, the bacterium was identified as P. agglomerans. To our knowledge, this is the first report of P. agglomerans causing internal type BAN of walnut in China or worldwide. References: (1) A. Belisario et al. Plant Dis. 6:599, 2002. (2) G. Bouvet. Acta Hortic. 705:447, 2005. (3) C. Moragrega and H. Özaktan. J. Plant Pathol. 92:S1.67, 2010.
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Lu X, Guo J, Zhou X, Li R, Liu X, Zhao Y, Zhu B, Liu X, Xu J, Zhu P, Wu X, He J, Liu X, Zhang H, Li Z. Deletion of LCE3C_LCE3B is associated with rheumatoid arthritis and systemic lupus erythematosus in the Chinese Han population. Ann Rheum Dis 2011; 70:1648-51. [DOI: 10.1136/ard.2010.148072] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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2478
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Sun Y, Shi Y, Zhang L, Liu X, Zhou C, Zhang L, Wang D, Li Q, Zhang S, Qin S, Hu C, Zhang Y, Chen J, Song Y, Feng JF, Cheng Y, Zhang H, Wu YL, Xu N, Zhou J. A randomized, double-blind phase III study of icotinib versus gefitinib in patients with advanced non-small cell lung cancer (NSCLC) previously treated with chemotherapy (ICOGEN). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7522] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2479
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Zhou C, Wu YL, Chen G, Feng JF, Liu X, Wang C, Zhang S, Wang J, Zhou S, Ren S, Lu S, Zhang L. Updated efficacy and quality-of-life (QoL) analyses in OPTIMAL, a phase III, randomized, open-label study of first-line erlotinib versus gemcitabine/carboplatin in patients with EGFR-activating mutation-positive (EGFR Act Mut+) advanced non-small cell lung cancer (NSCLC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2480
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Liu X, Gong C, Jiang X. Inhibitory effects of enterococci on the production of hydrogen sulfide by hydrogen sulfide-producing bacteria in raw meat. J Appl Microbiol 2011; 111:83-92. [PMID: 21518155 DOI: 10.1111/j.1365-2672.2011.05034.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS Applying competitive exclusion micro-organisms to control hydrogen sulfide (H₂S) gas produced by hydrogen sulfide-producing bacteria (SPB) in chicken meat. METHODS AND RESULTS Five SPB strains, isolated from animal by-products, were used for screening lactic acid bacteria (LAB) that can inhibit the production of H₂S by SPB in trypticase soy broth supplemented with L-cysteine (TSB-L-cys). A sensitive and accurate test strip method was developed for H₂S determination in real time. One LAB strain, isolate L86, from cheese whey, demonstrated the highest inhibitory activity against the production of H₂S by SPB. The isolate L86 was confirmed as Enterococcus faecium that does not possess genes encoding for vancomycin resistance based on PCR analysis. Enterococcus faecium strain L86 reduced (P < 0·05) the yield of H₂S upto 51·2% in 10 h at 35°C in TSB-L-cys medium. In fresh chicken meat, the yield of H₂S produced by the artificially inoculated SPB was reduced (P < 0·05) by 48·6, 49·7 and 69·8% in 10 h at 35, 30 and 25°C, respectively. Enterococcus faecium strain L86 also reduced (P < 0·05) by 53·8% on the yield of H₂S produced by the indigenous SPB in partially spoiled chicken meat at 35°C for 10 h. CONCLUSIONS Enterococcus faecium strain L86 is effective on inhibiting the production of H₂S by SPB. SIGNIFICANCE AND IMPACT OF THE STUDY The application of this biological agent to raw animal by-products will provide a safer working environment in rendering processing plants and produce higher-quality rendered products.
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2481
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Yuan Z, Liu X. Nimotuzumab different administration time due to human lung adenocarcinoma A549, CALU6 cell radio-sensitization study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21044] [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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2482
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Cristea MC, Koczywas M, Reckamp KL, Lacey SF, Rotter A, Frankel PH, Fouladi Rad S, Liu X, Tran V, Reorizo E, Kalos M. A phase I study of MM-10-001 in advanced non-small cell lung cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7572] [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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2483
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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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2484
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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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2485
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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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2486
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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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2487
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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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2488
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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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2489
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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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2490
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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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2491
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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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2492
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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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2493
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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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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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2495
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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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2496
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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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2497
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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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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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2499
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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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2500
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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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