2326
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Yi Y, Lai C, Han T, Liu X, Shen Y, Zhong Y, Ge S, You Z, Wang T, Shaw C. SU-GG-I-29: Comparison of Ellipsoidal and Cylindrical Breast Phantoms for Accuracy of Monte Carlo Dose Estimation in Cone Beam Breast CT. Med Phys 2010. [DOI: 10.1118/1.3468062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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2327
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Qiao Y, Harvard C, Tyson C, Liu X, Fawcett C, Pavlidis P, Holden JJA, Lewis MES, Rajcan-Separovic E. Outcome of array CGH analysis for 255 subjects with intellectual disability and search for candidate genes using bioinformatics. Hum Genet 2010; 128:179-94. [PMID: 20512354 DOI: 10.1007/s00439-010-0837-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Accepted: 05/09/2010] [Indexed: 12/20/2022]
Abstract
Array CGH enables the detection of pathogenic copy number variants (CNVs) in 5-15% of individuals with intellectual disability (ID), making it a promising tool for uncovering ID candidate genes. However, most CNVs encompass multiple genes, making it difficult to identify key disease gene(s) underlying ID etiology. Using array CGH we identified 47 previously unreported unique CNVs in 45/255 probands. We prioritized ID candidate genes using five bioinformatic gene prioritization web tools. Gene priority lists were created by comparing integral genes from each CNV from our ID cohort with sets of training genes specific either to ID or randomly selected. Our findings suggest that different training sets alter gene prioritization only moderately; however, only the ID gene training set resulted in significant enrichment of genes with nervous system function (19%) in prioritized versus non-prioritized genes from the same de novo CNVs (7%, p < 0.05). This enrichment further increased to 31% when the five web tools were used in concert and included genes within mitogen-activated protein kinase (MAPK) and neuroactive ligand-receptor interaction pathways. Gene prioritization web tools enrich for genes with relevant function in ID and more readily facilitate the selection of ID candidate genes for functional studies, particularly for large CNVs.
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2328
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Kang H, Quan W, Wang Y, Lin Z, Wu M, Liu H, Liu X, Wang BB, Liu HJ, Gu YQ, Jia XY, Liu J, Chen J, Cheng Y. Structure effects in angle-resolved high-order above-threshold ionization of molecules. PHYSICAL REVIEW LETTERS 2010; 104:203001. [PMID: 20867024 DOI: 10.1103/physrevlett.104.203001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Indexed: 05/29/2023]
Abstract
We present energy-resolved angular distributions of photoelectrons generated in above-threshold ionization (ATI) of nonaligned diatomic molecules N2 and O2 in high-intensity short laser pulses, with emphasis on the most energetic part of the spectra. The angular distribution for photoelectrons with energy of 10U(p) (U(p): ponderomotive energy), i.e., the plateau cutoff in ATI spectra, is found to be broader in O2 than in N2. Resorting to the analyses from both an S-matrix theory and an intuitive semiclassical model, we attribute the observation to the effect of the ground state molecular orbital structure on high-energy electron emission in strong-field molecular ionization.
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2329
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Zaitseva JV, Voloshina PV, Liu X, Ovadis MI, Berg G, Chernin LS, Khmel IA. Involvement of the global regulators GrrS, RpoS, and SplIR in formation of biofilms in Serratia plymuthica. RUSS J GENET+ 2010. [DOI: 10.1134/s1022795410050054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2330
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Yang G, Gong P, Xu L, Hunter ZR, Zhou Y, Liu X, Cao Y, Ciccarelli B, Patterson CJ, Treon SP. Activity of the CD20-directed monoclonal antibody GA101 relative to rituximab in Waldenstrom's macroglobulinemia (WM), and applicability to patients expressing FcγRIIIA-158 F/F. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8112] [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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2331
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Li J, Liu X, Wang BY, Guo WJ, Yin JL, Zhu XD, Zhang J, Liu T. Phase II study of cetuximab in combination with modified FOLFIRI in patients with advanced gastric cancer who failed first-line chemotherapy (EFFI study). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.4107] [Citation(s) in RCA: 2] [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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2332
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Lee J, Kim P, Liu X, Park J, Ng S, Lee T, Lim H, Singh S, Kim S, Kang W. Functional profiling of signal transduction pathway proteins in gastric cancer (GC) patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14555] [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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2333
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Choy E, Cao Y, Hornicek F, Wood KB, Schwab JH, Liu X, Mankin H, Duan Z. Effect of histone deacetylase inhibitor (HDACI) PCI-24781 on chemotherapy-induced apoptosis in multidrug-resistant sarcoma cell lines. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10089] [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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2334
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Tagawa T, Morgan R, Cristea MC, Wakabayashi MT, Lin H, Wang Y, Chu P, Liu X, Ann D, Yen Y. Comparison of HMGA2 expression in serous versus endometrioid subtypes of human ovarian carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e15528] [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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2335
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Desai N, Piacente M, Liu X, D'Cruz O, Hwang L, Lin X, Ran S, Markovic S, Motamed K, Trieu VN. Effect of plasma SPARC on outcome in cancer models. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10600] [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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2336
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Tan A, Aucejo F, Liu X, Lopez R, Kim RD. Prognostic role of serum vascular endothelial growth factor level in hepatocellular carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14662] [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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2337
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Liu X, Wang W, Li J, Tang C, Yu F. Sunitinib in treatment of advanced non-small cell lung cancer after failure of multiregimens of chemotherapy and EGFR-TKI. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e18139] [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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2338
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Markovic S, Suman V, Trieu VN, Liu X, Yeh W, Hwang L, Treece T, Motamed K, Pramanik P, Desai N. Tumor SPARC microenvironment signature (SMS) and plasma levels in a phase II trial of unresectable stage IV melanoma treated with nab-paclitaxel and carboplatin: A translational study of NCCTG trial N057E. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8578] [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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2339
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Singh S, Liu X, Lee T, Kirkland R, Kuller A, Ohrmund L, Lin F, Hanna M, Kim P, Ybarrondo B. Analysis of truncated HER2 expression and activation in breast cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.1099] [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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2340
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Liu X, Gomez-Pinillos A, Ferrari AC. Simultaneous targeting of the androgen receptor and PI3K/mTOR pathway in androgen-dependent and androgen-independent prostate cancer cells. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e15049] [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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2341
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Kim P, Wu Y, Liu X, Vargas-Quesada EA, Gomez-Moreno HL, Shin P, Lee T, Leesman G, Singh S, Lowder JN. Characterization of HER2 functional profiling in fine needle aspirates (FNA) in patients with metastatic breast cancer (MBC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e21029] [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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2342
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Zhou C, Wu Y, Chen G, Feng J, Liu X, Wang C, Zhang S, Wang J, Zhou S, Ren S. Preliminary results of randomized phase III study comparing efficacy and safety of first-line erlotinib versus carboplatin (CBDCA) plus gemcitabine (GEM) in Chinese advanced non-small cell lung cancer (NSCLC) patients (pts) with EGFR-activating mutations (OPTIMAL). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7575] [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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2343
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Xu G, Liu X, Zheng L, Fang X, Yin Q. Successful Recanalization of a Chronic In-stent Occlusion at the Vertebral Artery Ostium. A Case Report. Interv Neuroradiol 2010; 15:462-5. [PMID: 20465887 DOI: 10.1177/159101990901500416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2009] [Accepted: 10/11/2009] [Indexed: 11/16/2022] Open
Abstract
SUMMARY In-stent restenosis or occlusion has been frequently reported as a complication after angioplasty and stenting in vertebral arteries. Reopening chronic in-stent occlusion in cervical arteries with endovascular techniques has not been reported. Here we describe a case with stent implantation in the origin of right vertebral artery. The stent was occluded one year after the procedure. The patient demonstrated concurrent ischemic symptoms which were relieved after the in-stent occlusion being recanalized successfully with re-angioplasty.
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2344
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Peluso JJ, Liu X, Gawkowska A, Lodde V, Wu CA. Progesterone inhibits apoptosis in part by PGRMC1-regulated gene expression. Mol Cell Endocrinol 2010; 320:153-61. [PMID: 20144686 PMCID: PMC2844455 DOI: 10.1016/j.mce.2010.02.005] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 01/27/2010] [Accepted: 02/01/2010] [Indexed: 11/25/2022]
Abstract
Progesterone receptor membrane component-1 (PGRMC1) is present in both the cytoplasm and nucleus of spontaneously immortalized granulosa cells (SIGCs). PGRMC1 is detected as a monomer in the cytoplasm and a DTT-resistant PGRMC1 dimer in the nucleus. Transfected PGRMC1-GFP localizes mainly to the cytoplasm and does not form a DTT-resistant dimer. Moreover, forced expression of PGRMC1-GFP increases the sensitivity of the SIGCs to progesterone (P4)'s anti-apoptotic action, indicating that the PGRMC1 monomer is functional. However, when endogenous PGRMC1 is depleted by siRNA treatment and replaced with PGRMC1-GFP, P4 responsiveness is not enhanced, although overall levels of PGRMC1 are increased. P4's anti-apoptotic action is also attenuated by actinomycin D, an inhibitor of RNA synthesis, and P4 activation of PGRMC1 suppresses Bad and increases Bcl2a1d expression. Taken together, the present studies suggest a genomic component to PGRMC1's anti-apoptotic mechanism of action, which requires the presence of the PGRMC1 dimer.
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2345
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Rodenburg C, Liu X, Jepson MAE, Zhou Z, Rainforth WM, Rodenburg JM. The role of helium ion microscopy in the characterisation of complex three-dimensional nanostructures. Ultramicroscopy 2010; 110:1178-84. [PMID: 20452124 DOI: 10.1016/j.ultramic.2010.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 04/04/2010] [Accepted: 04/20/2010] [Indexed: 10/19/2022]
Abstract
This work addresses two major issues relating to Helium Ion Microscopy (HeIM). First we show that HeIM is capable of solving the interpretation difficulties that arise when complex three-dimensional structures are imaged using traditional high lateral resolution techniques which are transmission based, such as scanning transmission electron microscopy (STEM). Secondly we use a nano-composite coating consisting of amorphous carbon embedded in chromium rich matrix to estimate the mean escape depth for amorphous carbon for secondary electrons generated by helium ion impact as a measure of HeIM depth resolution.
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2346
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Zhao Z, Zhao S, Xu N, Yu C, Guan S, Liu X, Huang L, Liao W, Jia W. Lovastatin improves neurological outcome after nucleus basalis magnocellularis lesion in rats. Neuroscience 2010; 167:954-63. [DOI: 10.1016/j.neuroscience.2010.02.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 02/13/2010] [Accepted: 02/19/2010] [Indexed: 12/15/2022]
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2347
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Zaĭtseva IV, Voloshina PV, Liu X, Ovadis MI, Berg G, Chernin LS, Khmel' IA. [Involvement of the global regulators GrrS, RpoS, and SplIR in formation of biofilms in Serratia plymuthica]. GENETIKA 2010; 46:616-621. [PMID: 20583596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Most bacteria exist in the natural environment as biofilms, multicellular communities attached to hard surfaces. Biofilms have a characteristic architecture and are enclosed in the exopolymer matrix. Bacterial cells in biofilms are extremely resistant to antibacterial factors. It was shown in this work that the GrrA/GrrS system of global regulators of gene expression and the sigma S subunit of RNA polymerase (RpoS) play a significant role in positive regulation of biofilm formation in the rhizospheric bacterium Serratia plymuthica IC1270. Inactivation of grrS and rpoS genes resulted in an up to six-to-sevenfold and four-to-fivefold reduction in biofilm formation, respectively. Mutations in the grrS gene decreased the capacity of the bacterium for swarming motility. The splIR Quorum Sensing (QS) system was shown to negatively influence the biofilm formation. Transfer of the recombinant plasmid containing cloned genes splI/splR of S. plymuthica HRO-C48 into S. plymuthica IC1270 cells led to a twofold decrease of their ability to form biofilms. Inactivation of the splI gene coding for the synthase of N-acyl-homoserine lactones in S. plymuthica HRO-C48 resulted in a 2-2.5-fold increase in the level of biofilm formation, whereas the inclusion of plasmid carrying the cloned splI/splR genes into these mutant cells restored the biofilm formation to the normal level. The results obtained demonstrate that the formation of biofilms in S. plymuthica is positively regulated by the GrrA/GrrS and RpoS global regulators and is negatively regulated by the SplIR QS system.
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2348
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Yang L, Zhang Y, Dong R, Peng L, Liu X, Wang Y, Cheng X. Effects of adenoviral-mediated coexpression of bone morphogenetic protein-7 and insulin-like growth factor-1 on human periodontal ligament cells. J Periodontal Res 2010; 45:532-40. [PMID: 20412417 DOI: 10.1111/j.1600-0765.2009.01268.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND OBJECTIVE Bone morphogenetic protein-7 (BMP-7) and insulin-like growth factor-1 (IGF-1) are important in periodontal reconstruction. However, their synergistic effect in periodontal regeneration by gene delivery has not been reported. In this study, gene delivery of these two growth factors to human periodontal ligament cells (hPDLCs) was examined for its effects on cell proliferation and differentiation. MATERIAL AND METHODS Recombinant adenoviruses containing both human BMP-7 and IGF-1 cDNA created by introducing the internal ribosome entry site (IRES) sequence were used to transfer the genes into hPDLCs. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and cell cycle analysis were used to observe their effects on cell proliferation, while alkaline phosphatase activity measurement, RT-PCR and in vivo tests were conducted to investigate their effects on cell differentiation. RESULTS The proliferation of hPDLCs transduced by adenoviruses coexpressing BMP-7 and IGF-1 was suppressed while their differentiation ability was enhanced. There was a synergism of BMP-7 and IGF-1 in up-regulating alkaline phosphatase activity and mRNA levels of collagen type I and Runx2. Implantation in vivo with scaffolds illustrated that the transduced cells exhibited osteogenic differentiation and formed bone-like structures. CONCLUSION The combined delivery of BMP-7 and IGF-1 genes using an IRES-based strategy synergistically enhanced differentiation of hPDLCs. It is suggested that this could be a new potential method in gene therapy for periodontal reconstruction.
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2349
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Liu X, Fang W, Liu L, Yu T, Lou B, Zheng X. Biological control of postharvest sour rot of citrus by two antagonistic yeasts. Lett Appl Microbiol 2010; 51:30-5. [PMID: 20477956 DOI: 10.1111/j.1472-765x.2010.02851.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS To investigate antifungal effects of two antagonistic yeasts on postharvest sour rot caused by Geotrichum citri-aurantii in citrus and evaluate possible mechanisms. METHODS AND RESULTS Cell suspension of Cryptococcus laurentii at 10(8) to 10(9) cells per ml effectively reduced sour rot incidence from 55.6% among untreated control fruit to 29.9-20.7% after 5 days of incubation at 26 degrees C. Application of cell-free culture filtrate of C. laurentii was effective in reducing the sour rot, but the effectiveness was lower than that of the cell suspension (1 x 10(8) cells per ml). In addition, C. laurentii multiplied more rapidly than Rhodosporidium paludigenum at 26 degrees C. The fruit inoculated with the two yeasts demonstrated changes in peroxidase and superoxide dismutase activity. Cryptococcus laurentii, in particular, was capable of inducing a striking response in treated citrus fruits. CONCLUSIONS The antifungal ability of C. laurentii can be attributed to the competitions of nutrients and space, defensive responses and possible secretion of antibiotic compounds. SIGNIFICANCE AND IMPACT OF THE STUDY The use of such antagonists may constitute an important alternative to synthetic fungicides for controlling postharvest sour rot in citrus.
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2350
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de Oteyza D, Wakayama Y, Liu X, Yang W, Cook P, Himpsel F, Ortega J. Effect of fluorination on the molecule–substrate interactions of pentacene/Cu(100) interfaces. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.03.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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