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Wu F, Fan S, Martiniuk F, Pincus S, Müller S, Kohler H, Tchou-Wong KM. Protective effects of anti-ricin A-chain antibodies delivered intracellularly against ricin-induced cytotoxicity. World J Biol Chem 2010; 1:188-95. [PMID: 21541003 PMCID: PMC3083952 DOI: 10.4331/wjbc.v1.i5.188] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 05/15/2010] [Accepted: 05/22/2010] [Indexed: 02/05/2023] Open
Abstract
AIM: To evaluate the ability of anti-ricin A-chain antibodies, delivered intracellularly, to protect against ricin-induced cytotoxicity in RAW264.7 cells.
METHODS: Anti-deglycosylated ricin A-chain antibody and RAC18 anti-ricin A-chain monoclonal antibody were delivered intracellularly by encapsulating in liposomes or via conjugation with the cell-penetrating MTS-transport peptide. RAW264.7 cells were incubated with these antibodies either before or after ricin exposure. The changes in cytotoxicity were estimated by MTT assay. Co-localization of internalized antibody and ricin was evaluated by fluorescence microscopy.
RESULTS: Internalized antibodies significantly increased cell viability either before or after ricin exposure compared to the unconjugated antibodies. Fluorescence microscopy confirmed the co-localization of internalized antibodies and ricin inside the cells.
CONCLUSION: Intracellular delivery of antibodies to neutralize the ricin toxin after cellular uptake supports the potential use of cell-permeable antibodies for post-exposure treatment of ricin intoxication.
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102
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Wong H, Yau CC, Yao T, Tang V, Chan P, Chiu J, Fan S, Poon R. Efficacy and tolerability of sorafenib in elderly patients with advanced hepatocellular carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14522] [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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103
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Elmer KR, Fan S, Gunter HM, Jones JC, Boekhoff S, Kuraku S, Meyer A. Rapid evolution and selection inferred from the transcriptomes of sympatric crater lake cichlid fishes. Mol Ecol 2010; 19 Suppl 1:197-211. [PMID: 20331780 DOI: 10.1111/j.1365-294x.2009.04488.x] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Crater lakes provide a natural laboratory to study speciation of cichlid fishes by ecological divergence. Up to now, there has been a dearth of transcriptomic and genomic information that would aid in understanding the molecular basis of the phenotypic differentiation between young species. We used next-generation sequencing (Roche 454 massively parallel pyrosequencing) to characterize the diversity of expressed sequence tags between ecologically divergent, endemic and sympatric species of cichlid fishes from crater lake Apoyo, Nicaragua: benthic Amphilophus astorquii and limnetic Amphilophus zaliosus. We obtained 24 174 A. astorquii and 21 382 A. zaliosus high-quality expressed sequence tag contigs, of which 13 106 pairs are orthologous between species. Based on the ratio of nonsynonymous to synonymous substitutions, we identified six sequences exhibiting signals of strong diversifying selection (K(a)/K(s) > 1). These included genes involved in biosynthesis, metabolic processes and development. This transcriptome sequence variation may be reflective of natural selection acting on the genomes of these young, sympatric sister species. Based on Ks ratios and p-distances between 3'-untranslated regions (UTRs) calibrated to previously published species divergence times, we estimated a neutral transcriptome-wide substitutional mutation rate of approximately 1.25 x 10(-6) per site per year. We conclude that next-generation sequencing technologies allow us to infer natural selection acting to diversify the genomes of young species, such as crater lake cichlids, with much greater scope than previously possible.
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104
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Wan S, Ning L, Hong R, Wu W, Fan S, Tsuchiya H, Tomita K. Clinicopathological Features of Solitary Fibrous Tumours in the Extremities: Four Case Reports and a Literature Review. J Int Med Res 2010; 38:694-704. [PMID: 20515585 DOI: 10.1177/147323001003800234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This paper reports on the clinicopathological features of four patients with solitary fibrous tumours arising from the extremities and presents a review of the relevant literature. The patients consisted of three women and one man, with a mean age of 47.8 years. Standard pre-operative work-up data were examined, including: history, clinical examination, plain radiography, computed tomography scans of the lesion and chest, magnetic resonance imaging, angiography, technetium-99m bone scan, thallium-201 scintigraphy and routine laboratory tests. Immunohisto chemical staining was performed for CD34, Bcl-2 protein, vimentin, S-100 protein, desmin and smooth muscle actin, and pathological material was reviewed for the presence of histologically malignant components. Immunohistochemically, all of the tumours were diffusely positive for CD34. Clinical and radiological findings of solitary fibrous tumours affecting the extremities are reminiscent of those of aggressive or malignant soft tissue tumours. Pathological and immunohistochemical studies are important in making the correct diagnosis.
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105
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Demmers KJ, Carter D, Fan S, Mao P, Maqbool NJ, McLeod BJ, Bartolo R, Butt AG. Molecular and functional characterization of the cystic fibrosis transmembrane conductance regulator from the Australian common brushtail possum, Trichosurus vulpecula. J Comp Physiol B 2009; 180:545-61. [PMID: 20012660 DOI: 10.1007/s00360-009-0433-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 11/14/2009] [Accepted: 11/19/2009] [Indexed: 02/07/2023]
Abstract
Unlike eutherian mammals, the colon of the Australian common brushtail possum, Trichosurus vulpecula, a metatherian mammal, is incapable of electrogenic Cl(-) secretion and has elevated levels of electrogenic Na(+) absorption, while the ileum secretes HCO (3) (-) rather than Cl(-). In eutherian mammals, the cystic fibrosis transmembrane conductance regulator (CFTR) is essential for both Cl(-) and HCO (3) (-) secretion and the regulation of Na(+) absorption. Therefore, we have sequenced possum (p)CFTR, described its distribution and characterized the properties of cloned pCFTR expressed in Fischer rat thyroid (FRT) cells. pCFTR (GenBank accession No. AY916796) has a 1,478 amino acid open reading frame, which has >90% identity with CFTR from other marsupials and >80% identity with non-rodent eutherian mammals. In pCFTR, there is a high level of conservation of the transmembrane and nucleotide binding domains although, with the exception of other marsupials, there is considerable divergence from other species in the R domain. FRT cells transfected with pCFTR express mature CFTR protein which functions as a small Cl(-) channel activated by cAMP-dependent phosphorylation. In whole-cell recordings it has a linear, time and voltage-independent conductance, with a selectivity sequence P(Br) > P(Cl) > P(I) > P(HCO)(3) >> P(Gluconate). pCFTR transcript is present in a range of epithelia, including the ileum and the colon. The presence of pCFTR in the ileum and its measured HCO (3) (-) permeability suggest that it may be involved in ileal HCO (3) (-) secretion. Why the possum colon does not secrete Cl(-) and has elevated electrogenic Na(+) absorption, despite the apparent expression of CFTR, remains to be determined.
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106
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Miao KR, Pan QQ, Wu HX, Zhou XY, Pan M, Xue M, Fan S, Wang XY, Zhao X, Tang RC, Wang CY. Unusual amplification pattern by SSP HLA-B typing led to discovery of a novel HLA-C allele. Int J Immunogenet 2009; 35:447-51. [PMID: 19046303 DOI: 10.1111/j.1744-313x.2008.00806.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report here the unique sequence of a novel human leucocyte antigen (HLA)-C allele resulted in amplification of a product with a primer pair used in sequence-specific primer (SSP) HLA-B typing, which led subsequently to identification of a new allele of Cw*0339 by sequence-based typing method. This new allele is closely related to Cw*031101 with only two nucleotide changes from T to G at position 97, and T to C at position 105 in the exon 2 region of HLA-C locus. The first nucleotide substitution causes an amino acid alteration from tyrosine to aspartic acid at amino acid residue 9 (Y to D), while the second one keeps alanine at residue 11 unchanged. Most interestingly, the nucleotide change from T to G at position 97 makes it identical to the 3' end sequence of one SSP of the commercial HLA-B SSP typing kit we were using. In this specific case, it resulted in amplification of a product of HLA-C gene instead of B gene.
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107
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Miao KR, Pan QQ, Xue M, Fan S, Wang XY, Pan M, Zhou XY, Fei XM, Zhao X, Wang CY. Human leukocyte antigens in 295 Chinese patients with chronic myeloid leukemia. Leuk Lymphoma 2009; 48:2152-6. [DOI: 10.1080/10428190701632830] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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108
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Zhang Y, Patel D, Fan S. Activation of interferon signaling pathway in primary effusion lymphoma cells by inhibition of viral interferon regulatory factor 1 of Kaposi's sarcoma-associated herpesvirus. Infect Agent Cancer 2009. [PMCID: PMC4261836 DOI: 10.1186/1750-9378-4-s2-p47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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109
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Tan B, Bettinger J, Scheifele D, Halperin S, Vaudry W, Fan S, Law B, Bortolussi R. The Effect of Provincially-Funded Varicella Immunization Programs on Varicella-Related Hospitalizations in Impact Centers, 1999–2007. Paediatr Child Health 2009. [DOI: 10.1093/pch/14.suppl_a.51a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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110
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Huang H, Fan S, Ji X, Zhang Y, Bao F, Zhang G. Recombinant Human Erythropoietin Protects against Experimental Spinal Cord Trauma Injury by Regulating Expression of the Proteins MKP-1 and p-ERK. J Int Med Res 2009; 37:511-9. [PMID: 19383246 DOI: 10.1177/147323000903700227] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The present study explored the tissue-protective effect of erythropoietin in rats after experimental spinal cord injury (SCI) produced by dropping a weight onto surgically exposed spinal cord. Sixty rats were randomized to sham operation (spinal cord exposure; control), SCI plus intraperitoneal saline injection, or SCI plus intraperitoneal erythropoietin injection. Locomotor function was evaluated with Basso, Beattie and Bresnahan scores 1 day (24 h) and 7 days later, and rats were then killed for analysis of lesion site tissue. Compared with saline-treated SCI rats, erythropoietin-treated SCI rats showed significantly less locomotor dysfunction and faster locomotor recovery. Immunohistochemistry showed that erythropoietin-treated SCI rats had a significantly lower phospho-extracellular signal-regulated kinase (p-ERK) protein expression and a significantly higher mitogen-activated protein kinase phosphatase-1 (MKP-1) protein expression than saline-treated SCI rats. Haematoxylin–eosin staining showed progressive disruption of dorsal white matter and neuron loss after SCI; lesions were less severe and there was more neuron regeneration in the erythropoietin group than in the saline group. It is concluded that erythropoietin reduces pathological changes and SCI severity via down-regulation of p-ERK and up-regulation of MKP-1.
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111
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Sun X, Zhang S, Wang N, Liang Y, Wang L, Fan S, Sun L. Utility assessment among patients of primary angle closure/glaucoma in China: a preliminary study. Br J Ophthalmol 2009; 93:871-4. [PMID: 19208679 DOI: 10.1136/bjo.2008.139295] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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112
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Li Z, Xiang J, Zhang W, Fan S, Wu M, Li X, Li G. Nanoparticle delivery of anti-metastatic NM23-H1 gene improves chemotherapy in a mouse tumor model. Cancer Gene Ther 2008; 16:423-9. [PMID: 19096443 DOI: 10.1038/cgt.2008.97] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gene therapy provides a promising approach for cancer treatment. Earlier studies suggested that poly-L-lysine-modified iron oxide nanoparticles (IONP-PLL) might be a promising gene delivery system that can transfect DNA efficiently in vitro and in vivo. In this study we used IONP-PLL as gene carriers to deliver the NM23-H1 gene, the first suppressor gene of cancer metastasis, to tumor cells in vivo. The intravenous injection of IONP-PLL carrying NM23-H1-GFP plasmid DNA significantly extended the survival time of an experimental pulmonary metastasis mouse model. In the IONP-PLL/NM23-H1-GFP-treated group, metastasis was clearly suppressed compared with the group treated with free NM23-H1-GFP plasmid. Furthermore, this gene therapy combined with cyclophosphamide treatment resulted in longer survival times and greater suppression of metastasis growth. In conclusion, treatment with IONP-PLL nanoparticles incorporating the NM23-H1gene is an efficient gene therapy method, and it is even more effective in combination with chemotherapy. This approach appears to be a promising strategy for treatment of metastatic tumors.
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Fan S, Wu F, Martiniuk F, Hale ML, Ellington AD, Tchou-Wong KM. Protective effects of anti-ricin A-chain RNA aptamer against ricin toxicity. World J Gastroenterol 2008; 14:6360-5. [PMID: 19009652 PMCID: PMC2766118 DOI: 10.3748/wjg.14.6360] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the therapeutic potential of an RNA ligand (aptamer) specific for the catalytic ricin A-chain (RTA), the protective effects of a 31-nucleotide RNA aptamer (31RA), which formed a high affinity complex with RTA, against ricin-induced toxicity in cell-based luciferase translation and cell cytotoxicity assays were evaluated.
METHODS: To test the therapeutic potential of anti-RTA aptamers in Chinese hamster ovary (CHO) AA8 cells stably transfected with a tetracycline regulatable promoter, ricin ribotoxicity was measured using luciferase and ricin-induced cytotoxicity was ascertained by MTS cell proliferation assay with tetrazolium compound [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium].
RESULTS: Inhibition of protein synthesis by ricin in CHO AA8 cells resulted in diminished luciferase activity and treatment with polyclonal antibody against deglycosylated RTA (dgA) neutralized the inhibitory effects of ricin on luciferase activity and protected against ricin-induced cytotoxicity as measured by MTS assay. The 31RA anti-RTA aptamer inhibited the translation of luciferase mRNA in cell-free reticulocyte translation assay. 31RA aptamer also partially neutralized the inhibitory effects of ricin on luciferase activity and partially protected against ricin-induced cytotoxicity in CHO AA8 cells.
CONCLUSION: We have shown that anti-RTA RNA aptamer can protect against ricin ribotoxicity in cell-based luciferase and cell cytotoxicity assays. Hence, RNA aptamer that inhibits RTA enzymatic activity represents a novel class of nucleic acid inhibitor that has the potential to be developed as a therapeutic agent for the treatment of ricin intoxication.
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Evenepoel P, Selgas R, Caputo F, Foggensteiner L, Heaf JG, Ortiz A, Kelly A, Chasan-Taber S, Duggal A, Fan S. Efficacy and safety of sevelamer hydrochloride and calcium acetate in patients on peritoneal dialysis. Nephrol Dial Transplant 2008; 24:278-85. [DOI: 10.1093/ndt/gfn488] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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115
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Zhao Y, Yu S, Xing C, Fan S, Song M. Analysis of DNA methylation in cotton hybrids and their parents. Mol Biol 2008. [DOI: 10.1134/s0026893308020015] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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116
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Zhao Y, Yu S, Xing C, Fan S, Song M. [DNA methylation in cotton hybrids and their parents]. Mol Biol (Mosk) 2008; 180:221-7. [PMID: 18610827 DOI: 10.1016/j.plantsci.2010.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Revised: 08/12/2010] [Accepted: 08/18/2010] [Indexed: 05/01/2023]
Abstract
The possible role of methylation in the performance of heterosis has been analyzed in many crops. To further study this possibility, we investigated both the differences in cytosine methylation patterns between cotton heterotic hybrid/nonheterotic hybrids and their parental lines and the change in methylation level from seedling stage to flowering stage by using the methylation-sensitive amplified polymorphism (MSAP) method. The results showed that the number of demethylation loci in highly heterotic hybrids was greater that in lowly heterotic hybrids, and the level of DNA cytosine methylation in cotton at the seedling stage is higher than that at the flowering stage. The altered methylation patterns at low-copy genomic regions can be confirmed by DNA gel blot analysis. A total of 39 fragments that showed different methylation patterns were cloned and sequenced. The methylation status of these genes was modified differentially in hybrid and parents, suggesting that these genes might play a role in the performance of heterosis.
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117
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Miao KR, Pan QQ, Tang RC, Zhou XP, Fan S, Wang XY, Zhao X, Xue M, Zhou XY, Wang CY. The polymorphism and haplotype analysis of HLA-A, -B and -DRB1 genes of population in Jiangsu province of China. Int J Immunogenet 2007; 34:419-24. [DOI: 10.1111/j.1744-313x.2007.00713.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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118
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Siddiqui K, Del Valle L, Morellet N, Cui J, Ghafouri M, Mukerjee R, Urbanska K, Fan S, Pattillo CB, Deshmane SL, Kiani MF, Ansari R, Khalili K, Roques BP, Reiss K, Bouaziz S, Amini S, Srinivasan A, Sawaya BE. Molecular mimicry in inducing DNA damage between HIV-1 Vpr and the anticancer agent, cisplatin. Oncogene 2007; 27:32-43. [PMID: 17653096 DOI: 10.1038/sj.onc.1210632] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The human immunodeficiency virus type 1 (HIV-1) viral protein R (vpr) gene is an evolutionarily conserved gene among the primate lentiviruses. Several functions are attributed to Vpr including the ability to cause cell death, cell cycle arrest, apoptosis and DNA damage. The Vpr domain responsible for DNA damage as well as the mechanism(s) through which Vpr induces this damage is unknown. Using site-directed mutagenesis, we identified the helical domain II within Vpr (aa 37-50) as the region responsible for causing DNA damage. Interestingly, Vpr Delta(37-50) failed to cause cell cycle arrest or apoptosis, to induce Ku70 or Ku80 and to suppress tumor growth, but maintained its capability to activate the HIV-1 LTR, to localize to the nucleus and to promote nonhomologous end-joining. In addition, our cytogenetic data indicated that helical domain II induced chromosomal aberrations, which mimicked those induced by cisplatin, an anticancer agent. This novel molecular mimicry function of Vpr might lead to its potential therapeutic use as a tumor suppressor.
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Aubert B, Barate R, Boutigny D, Couderc F, Karyotakis Y, Lees JP, Poireau V, Tisserand V, Zghiche A, Grauges E, Palano A, Pappagallo M, Pompili A, Chen JC, Qi ND, Rong G, Wang P, Zhu YS, Eigen G, Ofte I, Stugu B, Abrams GS, Battaglia M, Breon AB, Brown DN, Button-Shafer J, Cahn RN, Charles E, Day CT, Gill MS, Gritsan AV, Groysman Y, Jacobsen RG, Kadel RW, Kadyk J, Kerth LT, Kolomensky YG, Kukartsev G, Lynch G, Mir LM, Oddone PJ, Orimoto TJ, Pripstein M, Roe NA, Ronan MT, Wenzel WA, Barrett M, Ford KE, Harrison TJ, Hart AJ, Hawkes CM, Morgan SE, Watson AT, Fritsch M, Goetzen K, Held T, Koch H, Lewandowski B, Pelizaeus M, Peters K, Schroeder T, Steinke M, Boyd JT, Burke JP, Chevalier N, Cottingham WN, Kelly MP, Cuhadar-Donszelmann T, Fulsom BG, Hearty C, Knecht NS, Mattison TS, McKenna JA, Khan A, Kyberd P, Saleem M, Teodorescu L, Blinov AE, Blinov VE, Bukin AD, Druzhinin VP, Golubev VB, Kravchenko EA, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Yushkov AN, Best D, Bondioli M, Bruinsma M, Chao M, Eschrich I, Kirkby D, Lankford AJ, Mandelkern M, Mommsen RK, Roethel W, Stoker DP, Buchanan C, Hartfiel BL, Foulkes SD, Gary JW, Long O, Shen BC, Wang K, Zhang L, del Re D, Hadavand HK, Hill EJ, MacFarlane DB, Paar HP, Rahatlou S, Sharma V, Berryhill JW, Campagnari C, Cunha A, Dahmes B, Hong TM, Mazur MA, Richman JD, Verkerke W, Beck TW, Eisner AM, Flacco CJ, Heusch CA, Kroseberg J, Lockman WS, Nesom G, Schalk T, Schumm BA, Seiden A, Spradlin P, Williams DC, Wilson MG, Albert J, Chen E, Dubois-Felsmann GP, Dvoretskii A, Hitlin DG, Narsky I, Piatenko T, Porter FC, Ryd A, Samuel A, Andreassen R, Jayatilleke S, Mancinelli G, Meadows BT, Sokoloff MD, Blanc F, Bloom P, Chen S, Ford WT, Nauenberg U, Olivas A, Rankin P, Ruddick WO, Smith JG, Ulmer KA, Wagner SR, Zhang J, Chen A, Eckhart EA, Soffer A, Toki WH, Wilson RJ, Zeng Q, Altenburg D, Feltresi E, Hauke A, Spaan B, Brandt T, Brose J, Dickopp M, Klose V, Lacker HM, Nogowski R, Otto S, Petzold A, Schott G, Schubert J, Schubert KR, Schwierz R, Sundermann JE, Bernard D, Bonneaud GR, Grenier P, Schrenk S, Thiebaux C, Vasileiadis G, Verderi M, Bard DJ, Clark PJ, Gradl W, Muheim F, Playfer S, Xie Y, Andreotti M, Azzolini V, Bettoni D, Bozzi C, Calabrese R, Cibinetto G, Luppi E, Negrini M, Piemontese L, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Patteri P, Peruzzi IM, Piccolo M, Zallo A, Buzzo A, Capra R, Contri R, Lo Vetere M, Macri M, Monge MR, Passaggio S, Patrignani C, Robutti E, Santroni A, Tosi S, Bailey S, Brandenburg G, Chaisanguanthum KS, Morii M, Won E, Wu J, Dubitzky RS, Langenegger U, Marks J, Schenk S, Uwer U, Bhimji W, Bowerman DA, Dauncey PD, Egede U, Flack RL, Gaillard JR, Morton GW, Nash JA, Nikolich MB, Taylor GP, Vazquez WP, Charles MJ, Mader WF, Mallik U, Mohapatra AK, Cochran J, Crawley HB, Eyges V, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Yi J, Arnaud N, Davier M, Giroux X, Grosdidier G, Höcker A, Le Diberder F, Lepeltier V, Lutz AM, Oyanguren A, Petersen TC, Pierini M, Plaszczynski S, Rodier S, Roudeau P, Schune MH, Stocchi A, Wormser G, Cheng CH, Lange DJ, Simani MC, Wright DM, Bevan AJ, Chavez CA, Coleman JP, Forster IJ, Fry JR, Gabathuler E, Gamet R, George KA, Hutchcroft DE, Parry RJ, Payne DJ, Schofield KC, Touramanis C, Cormack CM, Di Lodovico F, Sacco R, Brown CL, Cowan G, Flaecher HU, Green MG, Hopkins DA, Jackson PS, McMahon TR, Ricciardi S, Salvatore F, Brown D, Davis CL, Allison J, Barlow NR, Barlow RJ, Hodgkinson MC, Lafferty GD, Naisbit MT, Williams JC, Chen C, Farbin A, Hulsbergen WD, Jawahery A, Kovalskyi D, Lae CK, Lillard V, Roberts DA, Simi G, Blaylock G, Dallapiccola C, Hertzbach SS, Kofler R, Koptchev VB, Li X, Moore TB, Saremi S, Staengle H, Willocq S, Cowan R, Koeneke K, Sciolla G, Sekula SJ, Spitznagel M, Taylor F, Yamamoto RK, Kim H, Patel PM, Robertson SH, Lazzaro A, Lombardo V, Palombo F, Bauer JM, Cremaldi L, Eschenburg V, Godang R, Kroeger R, Reidy J, Sanders DA, Summers DJ, Zhao HW, Brunet S, Côté D, Taras P, Viaud B, Nicholson H, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Monorchio D, Paolucci P, Piccolo D, Sciacca C, Baak M, Bulten H, Raven G, Snoek HL, Wilden L, Jessop CP, LoSecco JM, Allmendinger T, Benelli G, Gan KK, Honscheid K, Hufnagel D, Jackson PD, Kagan H, Kass R, Pulliam T, Rahimi AM, Ter-Antonyan R, Wong QK, Brau J, Frey R, Igonkina O, Lu M, Potter CT, Sinev NB, Strom D, Strube J, Torrence E, Dorigo A, Galeazzi F, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Voci C, Benayoun M, Briand H, Chauveau J, David P, Del Buono L, de la Vaissière C, Hamon O, John MJJ, Leruste P, Malclès J, Ocariz J, Roos L, Therin G, Behera PK, Gladney L, Guo QH, Panetta J, Biasini M, Covarelli R, Pacetti S, Pioppi M, Angelini C, Batignani G, Bettarini S, Bucci F, Calderini G, Carpinelli M, Cenci R, Forti F, Giorgi MA, Lusiani A, Marchiori G, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Walsh J, Haire M, Judd D, Wagoner DE, Biesiada J, Danielson N, Elmer P, Lau YP, Lu C, Olsen J, Smith AJS, Telnov AV, Bellini F, Cavoto G, D'Orazio A, Di Marco E, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Li Gioi L, Mazzoni MA, Morganti S, Piredda G, Polci F, Safai Tehrani F, Voena C, Schröder H, Wagner G, Waldi R, Adye T, De Groot N, Franek B, Gopal GP, Olaiya EO, Wilson FF, Aleksan R, Emery S, Gaidot A, Ganzhur SF, Giraud PF, Graziani G, Hamel de Monchenault G, Kozanecki W, Legendre M, London GW, Mayer B, Vasseur G, Yèche C, Zito M, Purohit MV, Weidemann AW, Wilson JR, Yumiceva FX, Abe T, Allen MT, Aston D, Bartoldus R, Berger N, Boyarski AM, Buchmueller OL, Claus R, Convery MR, Cristinziani M, Dingfelder JC, Dong D, Dorfan J, Dujmic D, Dunwoodie W, Fan S, Field RC, Glanzman T, Gowdy SJ, Hadig T, Halyo V, Hast C, Hryn'ova T, Innes WR, Kelsey MH, Kim P, Kocian ML, Leith DWGS, Libby J, Luitz S, Luth V, Lynch HL, Marsiske H, Messner R, Muller DR, O'Grady CP, Ozcan VE, Perazzo A, Perl M, Ratcliff BN, Roodman A, Salnikov AA, Schindler RH, Schwiening J, Snyder A, Stelzer J, Su D, Sullivan MK, Suzuki K, Swain S, Thompson JM, Va'vra J, Weaver M, Weinstein AJR, Wisniewski WJ, Wittgen M, Wright DH, Yarritu AK, Yi K, Young CC, Burchat PR, Edwards AJ, Majewski SA, Petersen BA, Roat C, Ahmed M, Ahmed S, Alam MS, Ernst JA, Saeed MA, Wappler FR, Zain SB, Bugg W, Krishnamurthy M, Spanier SM, Eckmann R, Ritchie JL, Satpathy A, Schwitters RF, Izen JM, Kitayama I, Lou XC, Ye S, Bianchi F, Bona M, Gallo F, Gamba D, Bomben M, Bosisio L, Cartaro C, Cossutti F, Della Ricca G, Dittongo S, Grancagnolo S, Lanceri L, Vitale L, Martinez-Vidal F, Panvini RS, Banerjee S, Bhuyan B, Brown CM, Fortin D, Hamano K, Kowalewski R, Roney JM, Sobie RJ, Back JJ, Harrison PF, Latham TE, Mohanty GB, Band HR, Chen X, Cheng B, Dasu S, Datta M, Eichenbaum AM, Flood KT, Graham M, Hollar JJ, Johnson JR, Kutter PE, Li H, Liu R, Mellado B, Mihalyi A, Pan Y, Prepost R, Tan P, von Wimmersperg-Toeller JH, Wu SL, Yu Z, Neal H. Measurement of branching fractions and mass spectra of B-->Kpipigamma. PHYSICAL REVIEW LETTERS 2007; 98:211804. [PMID: 17677766 DOI: 10.1103/physrevlett.98.211804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Indexed: 05/16/2023]
Abstract
We present a measurement of the partial branching fractions and mass spectra of the exclusive radiative penguin processes B-->Kpipigamma in the range m(Kpipi)<1.8 GeV/c(2). We reconstruct four final states: K(+)pi(-)pi(+)gamma, K(+)pi(-)pi(0)gamma, K(S)(0)pi(-)pi(+)gamma, and K(S)(0)pi(+)pi(0)gamma, where K(S)(0)-->pi(+)pi(-). Using 232 x 10(6) e(+)e(-)-->BB events recorded by the BABAR experiment at the SLAC PEP-II asymmetric-energy storage ring, we measure the branching fractions B(B(+)-->K(+)pi(-)pi(+)gamma)=[2.95+/-0.13(stat)+/-0.20(syst)] x 10(-5), B(B(0)-->K(+)pi(-)pi(0)gamma)=[4.07+/-0.22(stat)+/-0.31(syst)] x 10(-5), B(B(0)-->K(0)pi(+)pi(-)gamma)=[1.85+/-0.21(stat)+/-0.12(syst)] x 10(-5), and B(B(+)-->K(0)pi(+)pi(0)gamma)=[4.56+/-0.42(stat)+/-0.31(syst)] x 10(-5).
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Fan S, Meng Q, Laterra JJ, Rosen EM. Ras effector pathways modulate scatter factor-stimulated NF-kappaB signaling and protection against DNA damage. Oncogene 2007; 26:4774-96. [PMID: 17297451 DOI: 10.1038/sj.onc.1210271] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Scatter factor (SF) (hepatocyte growth factor) is a pleiotrophic cytokine that accumulates within tumors in vivo and protects tumor cells against cytotoxicity and apoptosis due to DNA damaging agents in vitro. Previous studies have established that SF-mediated cell protection involves antiapoptotic signaling from its receptor (c-Met) to PI3 kinase --> c-Akt --> Pak1 (p21-activated kinase -1) --> NF-kappaB (nuclear factor-kappa B). Here, we found that Ras proteins (H-Ras and R-Ras) enhance SF-mediated activation of NF-kappaB and protection of DU-145 and MDCK (Madin-Darby canine kidney) cells against the topoisomerase IIalpha inhibitor adriamycin. Studies of Ras effector loop mutants and their downstream effectors suggest that Ras/PI3 kinase and Ras/Raf1 pathways contribute to SF stimulation of NF-kappaB signaling and cell protection. Further studies revealed that Raf1 positively regulates the ability of SF to stimulate NF-kappaB activity and cell protection. The ability of Raf1 to stimulate NF-kappaB activity was not due to the classical Raf1 --> MEK1/2 --> ERK1/2 pathway. However, we found that a MEK3/6 --> p38 pathway contributes to SF-mediated activation of NF-kappaB. In contrast, RalA, a target of the Ras/RalGDS pathway negatively regulated the ability of SF to stimulate NF-kappaB activity and cell protection. Ras, Raf1 and RalA modulate SF stimulation of NF-kappaB activity, in part, by regulating IkappaB kinase (IKK)-beta kinase activity. These findings suggest that Ras/Raf1/RalA pathways may converge to modulate NF-kappaB activation and SF-mediated survival signaling at the IKK complex and/or a kinase upstream of this complex.
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Fan S, Ghista D, Sridhar I, Ramakrishna K. Biomechanics of the intrinsically optimal design of the intervertebral disc. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2005:4408-11. [PMID: 17281213 DOI: 10.1109/iembs.2005.1615443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The spinal shock-absorbing disc needs to have the flexibility to enable the spine to bend and twist. At the same time under loading, its lateral and axial deformations have to be contained, so that it does not herniate and impinge on the spinal-chord. The disc is composed of a fluid-like nucleus pulposus (NP) contained within an annulus. Hence when the disc is loaded, the NP gets pressurized and stresses the surrounding annulus. Now, because its elastic modulus is stress-dependent (i.e. E-E <sub>0</sub> = ksigma, where k is a constitutive parameter ), the annulus stiffens under loading. In this way, the flexible disc is able to sustain its loading with minimal deformation and thereby contain its deformation. In this paper, we have carried out a stress and deformation analysis of the spinal disc, and demonstrated that its deformations are invariant with the load intensity and only dependent on its dimensions and its constitutive property parameter k. Thus, we demonstrate that the intrinsic design of the spinal disc makes it an optimal structure.
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Xu J, Gao M, Fan S, Meng Q, Goldberg ID, Abounader R, Ressom H, Laterra JJ, Rosen EM. Effect of Akt inhibition on scatter factor-regulated gene expression in DU-145 human prostate cancer cells. Oncogene 2006; 26:2925-38. [PMID: 17099727 DOI: 10.1038/sj.onc.1210088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The cytokine scatter factor (SF) (hepatocyte growth factor) transduces various biologic actions, including cell motility, invasion, angiogenesis and apoptosis inhibition. The latter is relevant to understanding the role of SF in promoting tumor cell survival in different contexts, for example, detachment from basement membrane, growth in metastatic sites and responses to chemo- and radiotherapy. Previously, we showed that SF protects cells against apoptosis owing to DNA damage, by a mechanism involving phosphoinositol-3-kinase/c-Akt signaling. Here, we used DNA microarray assays to identify c-Akt-regulated genes that might contribute to cell protection. DU-145 human prostate cancer cells were transfected+/-a dominant-negative mutant Akt, treated+/-SF and analysed for gene expression using Affymetrix arrays. These studies identified SF-regulated genes for which induction was c-Akt-dependent vs -independent. Selected microarray findings were confirmed by semiquantitative and quantitative reverse transcription-polymerase chain reaction. We tested the contribution of four SF-inducible/c-Akt-dependent genes (AMPD3, EPHB2, MX1 and WNT4) to protection against adriamycin (a DNA topoisomerase IIalpha inhibitor) using RNA interference. Knockdown of each gene except EPHB2 caused a small but significant reduction in the SF cell protection. The lack of effect of EPHB2 knockdown may be due to the fact that DU-145 cells contain a single-mutant EPHB2 allele. A combination of three small interfering RNAs blocked most of the protection by SF in both DU-145 and T47D cells. These findings identify novel c-Akt-regulated genes, some of which contribute to SF-mediated cytoprotection.
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Man K, Ng K, Xu A, Xiao J, Cheng Q, Sun C, Sun B, Poon R, Lo C, Fan S. 59 POSTER Adiponectin as a novel therapy for the suppression of liver cancer growth and metastasis. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70065-9] [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] Open
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Man K, Xiao J, Ng K, Cheng Q, Sun B, Wang Y, Sun C, Lo C, Poon R, Fan S. 157 POSTER Combination therapy for liver tumor growth and metastasis by low dose rapamycin and FTY720. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70163-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Aubert B, Barate R, Boutigny D, Couderc F, Karyotakis Y, Lees JP, Poireau V, Tisserand V, Zghiche A, Grauges E, Palano A, Pappagallo M, Pompili A, Chen JC, Qi ND, Rong G, Wang P, Zhu YS, Eigen G, Ofte I, Stugu B, Abrams GS, Battaglia M, Breon AB, Brown DN, Button-Shafer J, Cahn RN, Charles E, Day CT, Gill MS, Gritsan AV, Groysman Y, Jacobsen RG, Kadel RW, Kadyk J, Kerth LT, Kolomensky YG, Kukartsev G, Lynch G, Mir LM, Oddone PJ, Orimoto TJ, Pripstein M, Roe NA, Ronan MT, Wenzel WA, Barrett M, Ford KE, Harrison TJ, Hart AJ, Hawkes CM, Morgan SE, Watson AT, Fritsch M, Goetzen K, Held T, Koch H, Lewandowski B, Pelizaeus M, Peters K, Schroeder T, Steinke M, Boyd JT, Burke JP, Chevalier N, Cottingham WN, Cuhadar-Donszelmann T, Fulsom BG, Hearty C, Knecht NS, Mattison TS, McKenna JA, Khan A, Kyberd P, Saleem M, Teodorescu L, Blinov AE, Blinov VE, Bukin AD, Druzhinin VP, Golubev VB, Kravchenko EA, Onuchin AP, Serednyakov SI, Skovpen YI, Solodov EP, Yushkov AN, Best D, Bondioli M, Bruinsma M, Chao M, Curry S, Eschrich I, Kirkby D, Lankford AJ, Lund P, Mandelkern M, Mommsen RK, Roethel W, Stoker DP, Buchanan C, Hartfiel BL, Weinstein AJR, Foulkes SD, Gary JW, Long O, Shen BC, Wang K, Zhang L, del Re D, Hadavand HK, Hill EJ, MacFarlane DB, Paar HP, Rahatlou S, Sharma V, Berryhill JW, Campagnari C, Cunha A, Dahmes B, Hong TM, Mazur MA, Richman JD, Verkerke W, Beck TW, Eisner AM, Flacco CJ, Heusch CA, Kroseberg J, Lockman WS, Nesom G, Schalk T, Schumm BA, Seiden A, Spradlin P, Williams DC, Wilson MG, Albert J, Chen E, Dubois-Felsmann GP, Dvoretskii A, Hitlin DG, Narsky I, Piatenko T, Porter FC, Ryd A, Samuel A, Andreassen R, Mancinelli G, Meadows BT, Sokoloff MD, Blanc F, Bloom P, Chen S, Ford WT, Hirschauer JF, Kreisel A, Nauenberg U, Olivas A, Rankin P, Ruddick WO, Smith JG, Ulmer KA, Wagner SR, Zhang J, Chen A, Eckhart EA, Harton JL, Soffer A, Toki WH, Wilson RJ, Zeng Q, Aleksan R, Emery S, Gaidot A, Ganzhur SF, Giraud PF, Graziani G, Hamel de Monchenault G, Kozanecki W, Legendre M, London GW, Mayer B, Vasseur G, Yeche C, Zito M, Altenburg D, Feltresi E, Hauke A, Spaan B, Brandt T, Brose J, Dickopp M, Klose V, Lacker HM, Nogowski R, Otto S, Petzold A, Schubert J, Schubert KR, Schwierz R, Sundermann JE, Bernard D, Bonneaud GR, Grenier P, Schrenk S, Thiebaux C, Vasileiadis G, Verderi M, Bard DJ, Clark PJ, Gradl W, Muheim F, Playfer S, Xie Y, Andreotti M, Azzolini V, Bettoni D, Bozzi C, Calabrese R, Cibinetto G, Luppi E, Negrini M, Piemontese L, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Patteri P, Peruzzi IM, Piccolo M, Zallo A, Buzzo A, Capra R, Contri R, Lo Vetere M, Macri M, Monge MR, Passaggio S, Patrignani C, Robutti E, Santroni A, Tosi S, Brandenburg G, Chaisanguanthum KS, Morii M, Won E, Wu J, Dubitzky RS, Langenegger U, Marks J, Schenk S, Uwer U, Martinez-Vidal F, Bhimji W, Bowerman DA, Dauncey PD, Egede U, Flack RL, Gaillard JR, Morton GW, Nash JA, Nikolich MB, Taylor GP, Vazquez WP, Charles MJ, Mader WF, Mallik U, Mohapatra AK, Cochran J, Crawley HB, Eyges V, Meyer WT, Prell S, Rosenberg EI, Rubin AE, Yi J, Biasini M, Covarelli R, Pacetti S, Pioppi M, Arnaud N, Davier M, Giroux X, Grosdidier G, Höcker A, Le Diberder F, Lepeltier V, Lutz AM, Oyanguren A, Petersen TC, Pierini M, Plaszczynski S, Rodier S, Roudeau P, Schune MH, Stocchi A, Wormser G, Cheng CH, Lange DJ, Simani MC, Wright DM, Bevan AJ, Chavez CA, Forster IJ, Fry JR, Gabathuler E, Gamet R, George KA, Hutchcroft DE, Parry RJ, Payne DJ, Schofield KC, Touramanis C, Cormack CM, Di Lodovico F, Menges W, Sacco R, Brown CL, Cowan G, Flaecher HU, Green MG, Hopkins DA, Jackson PS, McMahon TR, Ricciardi S, Salvatore F, Brown D, Davis CL, Allison J, Barlow NR, Barlow RJ, Edgar CL, Hodgkinson MC, Kelly MP, Lafferty GD, Naisbit MT, Williams JC, Chen C, Hulsbergen WD, Jawahery A, Kovalskyi D, Lae CK, Roberts DA, Simi G, Blaylock G, Dallapiccola C, Hertzbach SS, Kofler R, Koptchev VB, Li X, Moore TB, Saremi S, Staengle H, Willocq S, Cowan R, Koeneke K, Sciolla G, Sekula SJ, Spitznagel M, Taylor F, Yamamoto RK, Kim H, Patel PM, Robertson SH, Lazzaro A, Lombardo V, Palombo F, Bauer JM, Cremaldi L, Eschenburg V, Godang R, Kroeger R, Reidy J, Sanders DA, Summers DJ, Zhao HW, Brunet S, Cote D, Taras P, Viaud B, Nicholson H, Baak M, Bulten H, Raven G, Snoek HL, Wilden L, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Monorchio D, Paolucci P, Piccolo D, Sciacca C, Jessop CP, LoSecco JM, Allmendinger T, Benelli G, Gan KK, Honscheid K, Hufnagel D, Jackson PD, Kagan H, Kass R, Pulliam T, Rahimi AM, Ter-Antonyan R, Wong QK, Brau J, Frey R, Igonkina O, Lu M, Potter CT, Sinev NB, Strom D, Strube J, Torrence E, Galeazzi F, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Voci C, Benayoun M, Briand H, Chauveau J, David P, de la Vaissiere C, Del Buono L, Hamon O, John MJJ, Leruste P, Malcles J, Ocariz J, Roos L, Therin G, Behera PK, Gladney L, Guo QH, Panetta J, Angelini C, Batignani G, Bettarini S, Bucci F, Calderini G, Carpinelli M, Cenci R, Forti F, Giorgi MA, Lusiani A, Marchiori G, Morganit M, Neri N, Paoloni E, Rama M, Rizzo G, Walsh J, Haire M, Judd D, Wagoner DE, Biesiada J, Danielson N, Elmer P, Lau Y, Lu C, Olsen J, Smith AJS, Telnov AV, Bellini F, Cavoto G, D'Orazio A, Di Marco E, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Li Gioi L, Mazzoni MA, Morganti S, Piredda G, Polci F, Safai Tehrani F, Voena C, Schröder H, Wagner G, Waldi R, Adye T, De Groot N, Franek B, Gopal GP, Olaiya EO, Wilson FF, Purohit MV, Weidemann AW, Wilson JR, Yumiceva FX, Abe T, Allen MT, Aston D, Bartoldus R, Berger N, Boyarski AM, Buchmueller OL, Claus R, Coleman JP, Convery MR, Cristinziani M, Dingfelder JC, Dong D, Dorfan J, Dujmic D, Dunwoodie W, Fan S, Field RC, Glanzman T, Gowdy SJ, Hadig T, Halyo V, Hast C, Hryn'ova T, Innes WR, Kelsey MH, Kim P, Kocian ML, Leith DWGS, Libby J, Luitz S, Luth V, Lynch HL, Marsiske H, Messner R, Muller DR, O'Grady CP, Ozcan VE, Perazzo A, Perl M, Ratcliff BN, Roodman A, Salnikov AA, Schindler RH, Schwiening J, Snyder A, Stelzer J, Su D, Sullivan MK, Suzuki K, Swain SK, Thompson JM, Va'vra J, van Bakel N, Weaver M, Wisniewski WJ, Wittgen M, Wright DH, Yarritu AK, Yi K, Young CC, Burchat PR, Edwards AJ, Majewski SA, Petersen BA, Roat C, Ahmed M, Ahmed S, Alam MS, Bula R, Ernst JA, Saeed MA, Wappler FR, Zain SB, Bugg W, Krishnamurthy M, Spanier SM, Eckmann R, Ritchie JL, Satpathy A, Schwitters RF, Izen JM, Kitayama I, Lou XC, Ye S, Bianchi F, Bona M, Gallo F, Gamba D, Bomben M, Bosisio L, Cartaro C, Cossutti F, Della Ricca G, Dittongo S, Grancagnolo S, Lanceri L, Vitale L, Panvini RS, Banerjee S, Bhuyan B, Brown CM, Fortin D, Hamano K, Kowalewski R, Roney JM, Sobie RJ, Back JJ, Harrison PF, Latham TE, Mohanty GB, Band HR, Chen X, Cheng B, Dasu S, Datta M, Eichenbaum AM, Flood KT, Graham M, Hollar JJ, Johnson JR, Kutter PE, Li H, Liu R, Mellado B, Mihalyi A, Pan Y, Prepost R, Tan P, von Wimmersperg-Toeller JH, Wu SL, Yu Z, Neal H, Schott G. Search for the rare decay B0-->tau+tau- at BABAR. PHYSICAL REVIEW LETTERS 2006; 96:241802. [PMID: 16907230 DOI: 10.1103/physrevlett.96.241802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Indexed: 05/11/2023]
Abstract
We present the results of a search for the decay B0-->tau+tau- in a data sample of (232+/-3)x10(6) Upsilon(4S)-->BB decays using the BABAR detector. Certain extensions of the standard model predict measurable levels of this otherwise rare decay. We reconstruct fully one neutral B meson and seek evidence for the signal decay in the rest of the event. We find no evidence for signal events and obtain Beta(B0->tau+tau-)<4.1x10(-3) at the 90% confidence level.
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