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Sun J, Liu W, Li L, Chen J, Wu M, Zhang Y, Leung AYH, Zhang W, Wen Z, Liao W. Suppression of Pu.1 function results in expanded myelopoiesis in zebrafish. Leukemia 2013; 27:1913-7. [PMID: 23455395 DOI: 10.1038/leu.2013.67] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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77
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Gao EJ, Wang B, Lin L, Sun TD, Wen Z, Liu SH, Wang Y, Wang RS, Zhang Y, Zhang M, Zhang YX, Zhu MC, Liu L. Synthesis, crystal structure, and interaction with DNA of a novel coordination polymer: {[Cd(Pmal)(Bipy)] · 4H2O} n. RUSS J COORD CHEM+ 2012. [DOI: 10.1134/s1070328412040045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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78
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Wen Z, Xu L, Xu W, Xiong S. Production of anti-double-stranded DNA antibodies in activated lymphocyte derived DNA induced lupus model was dependent on CD4+ T cells. Lupus 2012; 21:508-16. [DOI: 10.1177/0961203311434940] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Our previous study demonstrated that activated lymphocyte derived DNA (ALD-DNA) could function as an autoantigen to induce production of anti-double-stranded DNA (anti-dsDNA) antibodies in syngeneic BALB/c mice. Here we carefully evaluated the potential role of T cells in the induction of anti-dsDNA antibody. We demonstrated that ALD-DNA could effectively induce production of anti-dsDNA antibodies in vivo and in vitro. In contrast, ALD-DNA could not induce the generation of anti-dsDNA antibodies in nude mice. We further showed that in vivo depletion of CD3+ T cells blocked the induction of anti-dsDNA antibodies in BALB/c mice. Notably, we demonstrated that CD4+ but not CD8+ T cells conferred ALD-DNA to induce anti-dsDNA antibodies. Finally, we demonstrated that adoptive transfer of CD4+ T cells could rescue ALD-DNA induced anti-dsDNA antibodies in nude mice. Our results suggested that T helper cells were required for ALD-DNA to induce anti-dsDNA antibodies. These findings could further our understanding about the immunogenic properties of DNA and throw new light on SLE pathogenesis.
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Gao EJ, Zhang Y, Wen Z, Lin L, Dai L, Sun TD, Zhu MC, Wang Y. Synthesis and crystal structure characterization of complex [Cd(Bipy)2(L)] · 10H2O (H2L = 2,6-pyridinedicarboxylic acid). RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411110042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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80
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Wen Z, Sahoo N. SU-E-T-360: A Novel Procedure to Determine the Dose Output Change with Spread Out Bragg Peak Width and Range Shift in Passively Scattered Proton Beams. Med Phys 2011. [DOI: 10.1118/1.3612314] [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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81
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Gao EJ, Wang Y, Zhu MC, Liu L, Wen Z, Gao XN, Sun TD, Liu SH, Su M, Zhang YX, Zhang M, Zhang Y. Synthesis and crystal structure of a coordination polymer {[Cu2(L)2(Phen)2] · 8H2O} n. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s107032841104004x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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82
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Du F, Birong D, Changquan H, Hongmei W, Yanling Z, Wen Z, Li L. Association of osteoporotic fracture with smoking, alcohol consumption, tea consumption and exercise among Chinese nonagenarians/centenarians. J Nutr Health Aging 2011; 15:327-31. [PMID: 21528157 DOI: 10.1007/s12603-010-0270-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To observe the association of osteoporotic fracture with habits of smoking, alcohol consumption, tea consumption and exercise among very old people. DESIGN AND SETTING A cross-sectional study conducted in Dujiangyan Sichuan China. PARTICIPANTS 703 unrelated Chinese nonagenarians and centenarians (67.76% women, mean age 93.48 years) resident in Dujiangyan. MEASUREMENTS Medical history of osteoporosis and the statement of fracture and habits (current and former) of smoking, alcohol consumption, tea consumption and exercise were collected. RESULTS In women, subjects with current or former habit of alcohol consumption had significantly higher prevalence osteoporotic fracture than those without this habit; but subjects with former habit of exercise had significantly lower prevalence osteoporotic fracture than those without this habit. However, in men, there was no significant difference in prevalence of these habits between subjects with and without osteoporotic fracture. After adjust for age, gender, sleep habits educational levels, religion habits and temperament, we found that former habit of alcohol consumption had a significant odds ratio (OR=2.473 95% CI (1.074, 5.526)) for osteoporotic fracture. CONCLUSIONS In summary, among nonagenarians and centenarians, among habits (current and former) of smoking, alcohol consumption, tea consumption and exercise, there seems to be significant association of osteoporotic fracture only with current or former habits of alcohol consumption, former habit of exercise. The habit of alcohol consumption might be associated with a greater risk of osteoporotic fracture, but the former habit of exercise might be associated with a lower risk of osteoporotic fracture.
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Gao EJ, Liu SH, Zhang M, Lin L, Wang RS, Sun TD, Wang Y, Wen Z. Synthesis and molecular characterization of the coordination polymer [Pb(2,2′-Bipy)(NO3)2(H2O)] n. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411030043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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84
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Wiersma R, Wen Z, Sadinski M, Kang H. Development of Frameless SRS using Real-Time 6D Facial Surface Monitoring and Continuous Adaptive Head Motion Correction. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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85
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Wu T, Wen Z, Yenice K. Assessment of Dose Calculation Accuracy of a Commercially Available Monte Carlo Algorithm for Plan Optimization using Oblique Electron Fields at Extended SSDs. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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86
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Gao EJ, Wen Z, Zhu MC, Wang Y, Liu FC, Wang L, Su M, Zhang YX, Sun TD, Liu SH, Gao XN, Zhang Y. Synthesis and crystal structure characterization of supramolecular complex [Cd2(Bipy)2(L)2(H2O)2] · 9H2O (H2L = 2,2′-bipyridyl-6,6′-dicarboxylic acid). RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410100040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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87
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Liu F, Zou X, Sadovova N, Zhang X, Shi L, Guo L, Qian F, Wen Z, Patterson TA, Hanig JP, Paule MG, Slikker W, Wang C. Changes in gene expression after phencyclidine administration in developing rats: a potential animal model for schizophrenia. Int J Dev Neurosci 2010; 29:351-8. [PMID: 20691775 DOI: 10.1016/j.ijdevneu.2010.07.234] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 05/21/2010] [Accepted: 07/27/2010] [Indexed: 10/19/2022] Open
Abstract
Repeated administration of phencyclidine (PCP), an N-methyl-d-aspartate (NMDA) receptor antagonist, during development, may result in neuronal damage that leads to behavioral deficits in adulthood. The present study examined the potential neurotoxic effects of PCP exposure (10mg/kg) in rats on postnatal days (PNDs) 7, 9 and 11 and the possible underlying mechanism(s) for neurotoxicity. Brain tissue was harvested for RNA extraction and morphological assessments. RNA was collected from the frontal cortex for DNA microarray analysis and quantitative RT-PCR. Gene expression profiling was determined using Illumina Rat Ref-12 Expression BeadChips containing 22,226 probes. Based on criteria of a fold-change greater than 1.4 and a P-value less than 0.05, 19 genes including NMDAR1 (N-methyl-d-aspartate receptor) and four pro-apoptotic genes were up-regulated, and 25 genes including four anti-apoptotic genes were down-regulated, in the PCP-treated group. In addition, the schizophrenia-relevant genes, Bdnf (Brain-derived neurotrophic factor) and Bhlhb2 (basic helix-loop-helix domain containing, class B, 2), were significantly different between the PCP and the control groups. Quantitative RT-PCR confirmed the microarray results. Elevated neuronal cell death was further confirmed using Fluoro-Jade C staining. These findings support the hypothesis that neurodegeneration caused by PCP occurs, at least in part, through the up-regulation of NMDA receptors, which makes neurons possessing these receptors more vulnerable to endogenous glutamate. The changes in schizophrenia-relevant genes after repeated PCP exposure during development may provide important information concerning the validation of an animal model for this disorder.
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Wen Z, Yenice K, Farrey K, Wiersma R. Development of a Gated Frameless Stereotactic Radiosurgery/Radiotherapy System with Real-time 3D Position Monitoring and Adaptive Head Motion Compensation. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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89
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Wen Z, Yenice K, Farrey K, Wiersma R. SU-FF-T-529: A Feasibility Study On Frameless Gated Head Stereotactic Radiosurgery/Radiotherapy Via Real-Time Optical Position Monitoring and Adaptive Head Motion Compensation. Med Phys 2009. [DOI: 10.1118/1.3182027] [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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90
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Sun ZY, Li H, Zhang MJ, Zhao H, Xu W, Xiao H, Guo YX, Wen Z, Yin GQ. Supernumerary nostril. A rare congenital nasal deformity: case report and literature review. Eur Surg Res 2009; 42:245-8. [PMID: 19321958 DOI: 10.1159/000209400] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Accepted: 01/28/2009] [Indexed: 11/19/2022]
Abstract
Supernumerary nostril is one of the rarest congenital nasal deformities, and only a limited number of articles have been published so far on this topic. We present a typical case of a supernumerary nostril located above the left nostril in a male infant. We describe the appearance, physical examination, surgical procedure and histopathological examination of this case.
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91
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Rupasinghe SG, Wen Z, Chiu TL, Schuler MA. Helicoverpa zea CYP6B8 and CYP321A1: different molecular solutions to the problem of metabolizing plant toxins and insecticides. Protein Eng Des Sel 2007; 20:615-24. [DOI: 10.1093/protein/gzm063] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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92
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Wen Z, Li B, He X, Sun Y, Zhang H, Tang X, Hu J, Wang H, He S. SIGNAL TRANSDUCTION PATHWAYS OF INTERLEUKIN-6 INDUCING TISSUE FACTOR EXPRESSION IN VASCULAR ENDOTHELIAL CELLS. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb01777.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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93
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Diao Y, Ma D, Wen Z, Yin J, Xiang J, Li M. Using pseudo amino acid composition to predict transmembrane regions in protein: cellular automata and Lempel-Ziv complexity. Amino Acids 2007; 34:111-7. [PMID: 17520325 DOI: 10.1007/s00726-007-0550-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2007] [Accepted: 03/21/2007] [Indexed: 10/23/2022]
Abstract
Transmembrane (TM) proteins represent about 20-30% of the protein sequences in higher eukaryotes, playing important roles across a range of cellular functions. Moreover, knowledge about topology of these proteins often provides crucial hints toward their function. Due to the difficulties in experimental structure determinations of TM protein, theoretical prediction methods are highly preferred in identifying the topology of newly found ones according to their primary sequences, useful in both basic research and drug discovery. In this paper, based on the concept of pseudo amino acid composition (PseAA) that can incorporate sequence-order information of a protein sequence so as to remarkably enhance the power of discrete models (Chou, K. C., Proteins: Structure, Function, and Genetics, 2001, 43: 246-255), cellular automata and Lempel-Ziv complexity are introduced to predict the TM regions of integral membrane proteins including both alpha-helical and beta-barrel membrane proteins, validated by jackknife test. The result thus obtained is quite promising, which indicates that the current approach might be a quite potential high throughput tool in the post-genomic era. The source code and dataset are available for academic users at liml@scu.edu.cn.
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Jin M, Shen L, Hu B, Yu J, Wen Z, Su Y, Wang B, Chen L, Ying H, Chen L. Mature data on capecitabine (X) + fractionated cisplatin (P) as first-line therapy in patients (pts) with advanced gastric carcinoma (AGC). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4075 Background: Gastric cancer is one of the most common malignancies in Asia with an adjusted mortality rate above 20/100,000 population. 5-FU + fractionated P is a standard treatment for AGC in China. In a Korean study by Kim et al., X + P produced a response rate of 55% in pts with previously untreated AGC. Here we present mature efficacy/safety results in Chinese pts with AGC. Methods: 154 pts of a planned population of 120 pts were enrolled between Jun 2002 and Aug 2004. All had measurable AGC (WHO), Karnofsky performance status ≥60, adequate bone marrow, renal and hepatic functions. Prior radiotherapy or adjuvant chemotherapy was permitted. Pts received × 1000 mg/m2 orally bid on days 1–14 + P 20mg/m2/day i.v. on days 1–5, every 3 weeks for 6 cycles. The primary endpoint was time to disease progression (TTP). Results: Baseline characteristics of the 141 evaluable pts (104 men, 37 women) are: median age 54 years (range 23–80), main sites of metastases: lymph nodes 45%, liver 40%, stomach 18%, skin 6%, other 6%, lung 5%, abdomen 4%. The overall response rate was 36%, including 13 complete responses and 38 partial responses. After a median follow-up period of 12 months, the median TTP is 9 months (95% CI, 9–12 months) and the median overall survival is 12 months (95% CI, 12–15 months). Median treatment duration was 6 cycles (range 3–6). The most common treatment-related clinical adverse events (all grades >5%) were: hand-foot syndrome (HFS) 25%, leucopenia 13%, and SGOT abnormality 12%. The most commongrade 3 adverse events were SGPT abnormality 3%, HFS 2%, and anemia 2%. There were no grade 4 adverse events. Most grade 3 adverse events improved or resolved after treatment or interruption except in 1 pt with anemia who withdrew after 2 cycles. Conclusions: X combined with fractionated P is highly active and very well tolerated as first-line treatment for AGC, with comparable results to 5-FU + P. No significant financial relationships to disclose.
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Guo YZ, Li M, Lu M, Wen Z, Wang K, Li G, Wu J. Classifying G protein-coupled receptors and nuclear receptors on the basis of protein power spectrum from fast Fourier transform. Amino Acids 2006; 30:397-402. [PMID: 16773242 DOI: 10.1007/s00726-006-0332-z] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2005] [Accepted: 01/04/2006] [Indexed: 10/24/2022]
Abstract
As the potential drug targets, G-protein coupled receptors (GPCRs) and nuclear receptors (NRs) are the focuses in pharmaceutical research. It is of great practical significance to develop an automated and reliable method to facilitate the identification of novel receptors. In this study, a method of fast Fourier transform-based support vector machine was proposed to classify GPCRs and NRs from the hydrophobicity of proteins. The models for all the GPCR families and NR subfamilies were trained and validated using jackknife test and the results thus obtained are quite promising. Meanwhile, the performance of the method was evaluated on GPCR and NR independent datasets with good performance. The good results indicate the applicability of the method. Two web servers implementing the prediction are available at http://chem.scu.edu.cn/blast/Pred-GPCR and http://chem.scu.edu.cn/blast/Pred-NR.
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Wen Z, Li M, Li Y, Guo Y, Wang K. Delaunay triangulation with partial least squares projection to latent structures: a model for G-protein coupled receptors classification and fast structure recognition. Amino Acids 2006; 32:277-83. [PMID: 16729188 DOI: 10.1007/s00726-006-0341-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2006] [Accepted: 03/23/2006] [Indexed: 11/26/2022]
Abstract
As an important transmembrane protein family in eukaryon, G-protein coupled receptors (GPCRs) play a significant role in cellular signal transduction and are important targets for drug design. However, it is very difficult to resolve their tertiary structure by X-ray crystallography. In this study, we have developed a Delaunay model, which constructs a series of simplexes with latent variables to classify the families of GPCRs and projects unknown sequences to principle component space (PC-space) to predict their topology. Computational results show that, for the classification of GPCRs, the method achieves the accuracy of 91.0 and 87.6% for Class A, more than 80% for the other three classes in differentiating GPCRs from non-GPCRs and 70% for discriminating between four major classes of GPCR, respectively. When recognizing the structure of GPCRs, all the N-terminals of sequences can be determined correctly. The maximum accuracy of predicting transmembrane segments is achieved in the 7th transmembrane segment of Rhodopsin, which is 99.4%, and the average error is 2.1 amino acids, which is the lowest in all of the segments prediction. This method could provide structural information of a novel GPCR as a tool for experiments and other algorithms of structure prediction of GPCRs. Academic users should send their request for the MATLAB program for classifying GPCRs and predicting the topology of them at liml@scu.edu.cn .
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Zhang X, Walling DE, Yang Q, He X, Wen Z, Qi Y, Feng M. 137Cs budget during the period of 1960s in a small drainage basin on the Loess Plateau of China. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2006; 86:78-91. [PMID: 16144731 DOI: 10.1016/j.jenvrad.2005.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2004] [Revised: 07/12/2005] [Accepted: 07/12/2005] [Indexed: 05/04/2023]
Abstract
A sediment profile with a thickness of 28.12 m in a failed reservoir in a small catchment of the Yuntaishan Gully in the Loess Plateau of China consisted of 44 flood couplets deposited during the period from 1960 to 1970 with total volume of 2.36 x 10(6)m(3). Specific sediment yields for a flood event varied from 300 t km(-2) to 14,400 t km(-2) and annual sediment yields varied from 2500 t km(-2) in 1966 to 40,000 t km(-2) in 1964 with a mean value of 12,700 t km(-2)a(-1) for the period. Average annual (137)Cs concentrations of the sediments increased from 0.92 Bq kg(-1) in 1960 to 4.82 Bq kg(-1) in 1963, then decreased to 1.53 Bq kg(-1) in 1970. The total (137)Cs activity in the reservoir sediments was 9.22 x 10(9) Bq, which accounted for 31.9% of the total (137)Cs fallout precipitation of 2.89 x 10(10) Bq within the catchment during the period. The proportion of the (137)Cs loss from the catchment to the (137)Cs fallout precipitation within the catchment in a year varied between 8.01% and 66.8%, and it was 20.9% for the peak (137)Cs deposition year of 1963 and 52.0% in 1964. By analysis of the (137)Cs budget in the catchment for the (137)Cs peak precipitation period from 1962 to 1964, the (137)Cs surface enrichment coefficient Gamma should be much less than 0.23. And for calculation of soil losses on the cultivated land in the inter-gully area by using the Mass Balance Model II, the value of Gamma should be 0.05-0.1.
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Choi MC, Santangelo CD, Pelletier O, Kim JH, Kwon SY, Wen Z, Li Y, Pincus PA, Safinya CR, Kim MW. Direct Observation of Biaxial Confinement of a Semiflexible Filament in a Channel. Macromolecules 2005. [DOI: 10.1021/ma051348n] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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