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Ye F, Waddle M, Usinger D, Green R, Spearman K, Barbosa B, Godley P, Chen R. Comparison of Patient Versus Physician Reporting of Comorbidities in Localized Prostate Cancer Patients, Results From the Population-Based NC ProCESS Cohort. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1414] [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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102
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Waddle M, Ye F, Usinger D, Green R, Spearman K, Barbosa B, Godley P, Chen R. Which Prostate Cancer Patients Receive Multidisciplinary Consultation?: Findings From the Population-Based NC ProCESS Cohort. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ding YP, Liang MF, Ye JB, Liu QH, Xiong CH, Long B, Lin WB, Cui N, Zou ZQ, Song YL, Zhang QF, Zhang S, Liu YZ, Song G, Ren YY, Li SH, Wang Y, Hou FQ, Yu H, Ding P, Ye F, Li DX, Wang GQ. Prognostic value of clinical and immunological markers in acute phase of SFTS virus infection. Clin Microbiol Infect 2014; 20:O870-8. [PMID: 24684627 DOI: 10.1111/1469-0691.12636] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 03/25/2014] [Accepted: 03/25/2014] [Indexed: 12/23/2022]
Abstract
SFTS virus (SFTSV) is a novel bunyavirus that causes severe fever with thrombocytopenia syndrome (SFTS), an emerging infectious disease that occurred in China in recent years, with an average case fatality rate of 10-12%. Intervention in the early clinical stage is the most effective measure to reduce the mortality rate of disease. To elucidate the natural course of and immune mechanisms associated with the pathogenesis of SFTSV, 59 laboratory-confirmed SFTS patients in the acute phase, who were hospitalized between October 2010 and September 2011, were enrolled in this study, and the patients sera were dynamically collected and tested for SFTSV viral RNA load, 34 cytokines or chemokines and other related laboratory parameters. All clinical diagnostic factors in the acute phase of SFTS were evaluated and assessed. The study showed that the severity of the disease in 11 (18.6%) patients was associated with abdominal pain (p 0.007; OR = 21.95; 95% CI, 2.32-208.11) and gingival bleeding (p 0.001; OR=122.11; 95% CI, 6.41-2328). The IP-10, TNF-α, IL-6, IL-10, granzyme B and HSP70 levels were higher over the 7-8 days in severe cases, accompanied by altered AST, CK and LDH levels. HSP70 (p 0.012; OR=8.29; 95% CI, 1.58-43.40) was independently correlated with the severity of the early acute phase of SFTSV infection. The severity of SFTS can be predicted based on the presence of symptoms such as abdominal pain and gingival bleeding and on the level of HSP70 in the acute phase of the disease.
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Márquez G, Pinto A, Alamo L, Baumann B, Ye F, Winkler H, Taylor K, Padrón R. A method for 3D-reconstruction of a muscle thick filament using the tilt series images of a single filament electron tomogram. J Struct Biol 2014; 186:265-72. [PMID: 24727133 DOI: 10.1016/j.jsb.2014.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 03/19/2014] [Accepted: 04/04/2014] [Indexed: 10/25/2022]
Abstract
Myosin interacting-heads (MIH) motifs are visualized in 3D-reconstructions of thick filaments from striated muscle. These reconstructions are calculated by averaging methods using images from electron micrographs of grids prepared using numerous filament preparations. Here we propose an alternative method to calculate the 3D-reconstruction of a single thick filament using only a tilt series images recorded by electron tomography. Relaxed thick filaments, prepared from tarantula leg muscle homogenates, were negatively stained. Single-axis tilt series of single isolated thick filaments were obtained with the electron microscope at a low electron dose, and recorded on a CCD camera by electron tomography. An IHRSR 3D-recontruction was calculated from the tilt series images of a single thick filament. The reconstruction was enhanced by including in the search stage dual tilt image segments while only single tilt along the filament axis is usually used, as well as applying a band pass filter just before the back projection. The reconstruction from a single filament has a 40 Å resolution and clearly shows the presence of MIH motifs. In contrast, the electron tomogram 3D-reconstruction of the same thick filament - calculated without any image averaging and/or imposition of helical symmetry - only reveals MIH motifs infrequently. This is - to our knowledge - the first application of the IHRSR method to calculate a 3D reconstruction from tilt series images. This single filament IHRSR reconstruction method (SF-IHRSR) should provide a new tool to assess structural differences between well-ordered thick (or thin) filaments in a grid by recording separately their electron tomograms.
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Hu X, Ye F, Cao Z, Ling H, Qiao F, Song C, Shao Z. Abstract P4-07-11: Dual characteristics of microRNA-484 modulated cytidine deaminase (CDA) axis in breast cancer: Chemo-resistance and regulating cell proliferation. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p4-07-11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Acquired resistance to chemotherapy is a major clinical obstacle to achieve successful treatment in breast cancer. Cancer cells could evolve a complicated sensory network to develop resistance to chemo treatment. Recently, microRNAs modulated chemo-resistance is investigated as a new paradigm in cancer biology and some acquired mis-expression of miRs confer cancer cells to escape chemotherapy. However, it is important to address whether these miRs also play various intrinsic roles in carcinogenesis. Here, our study demonstrated that miR-484 could modulate cytidine deaminase (CDA) axis, playing various roles in chemo-resistance and cell proliferation.
We have generated a chemo-resistant breast cancer cell line (MDA-MB-231 Gem) which has 10 fold higher IC50 value than MDA-MB-231 cells in response to gemcitabine (dFdC) treatment through molecular evolution. Gene ontology analysis showed that cytidine degradation pathway was activated in the resistant cells, and qPCR array confirmed that cytidine deaminase (CDA), which converts dFdC to dFdU, was significantly upregulated. Interestingly, microRNA array analysis implicated that miR-484, which might target the 3’UTR region of CDA gene was down-regulated in these resistant cells. Furthermore, 3’UTR luciferase reporter assay and western blot revealed that miR-484 directly regulates CDA gene expression. Over-expression of miR-484 can sensibilize the resistant cells to dFdC treatment. Remarkably, restoration of CDA gene strongly converts miR-484–mediated dFdC sensibilization. These results implicated that miR-484/CDA axis play a pivotal role in chemo-resistance. Unexpectedly, further studies implicated that miR-484/CDA axis could also regulate cell proliferation due to disrupting cell cycle. We found that the chemo-resistant cells had deficiency in cell cycle progression at the S-phase transition, and miR-484 could significantly promote cell growth and overcome cell cycle arrest with CDA down-regulation. Moreover, reintroduction of CDA gene could abrogate miR-484-induced effects on cell proliferation via reactivating S-phase checkpoint. Importantly, the Kaplan-Meier survival analysis supported that higher expression of CDA in breast cancer patients indicates better outcome in DFS model.
In summary, this study uncovers for a previously unknown axis that cytidine deaminase was a direct downstream target for miR-484. The miR484/CDA axis could modulate cells into stagnant status for promoting cellular resistance to DNA damage agents in chemotherapy. On the other hand, as CDA gene participates in cell cycle S-phase arrest, miR484/CDA axis could also contribute to cell proliferation. Taken together, our findings provided new evidences that miR-484/CDA axis has various functions in cell proliferation and chemo-resistance and might be considered as a candidate therapeutic target in breast cancer.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P4-07-11.
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Sun Y, Wang D, Ye F, Hu DN, Liu X, Zhang L, Gao L, Song E, Zhang DY. Elevated cell proliferation and VEGF production by high-glucose conditions in Müller cells involve XIAP. Eye (Lond) 2013; 27:1299-307. [PMID: 23928877 PMCID: PMC3831121 DOI: 10.1038/eye.2013.158] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 06/27/2013] [Indexed: 12/19/2022] Open
Abstract
PURPOSE Müller cells have important roles in the pathogenesis of diabetic retinopathy by promoting cell proliferation and inducing the production of vascular endothelial growth factor (VEGF) under hyperglycemic conditions. The objective of this study was to determine the potential mechanism of Müller cell proliferation and VEGF production due to high-glucose conditions. METHODS Primary cultured rat Müller cells were incubated with medium containing variable concentrations of glucose and/or embelin, a specific inhibitor of X-linked inhibitor of apoptosis protein (XIAP), for 72 h. The proliferation of Müller cells was assessed by the MTT assay. The expression and/or phosphorylation of 146 proteins were assessed using protein pathway array. RESULTS High concentrations of glucose-induced Müller cell proliferation and altered expression and/or phosphorylation of 47 proteins that have been identified to have key roles in several important signaling pathways (XIAP, VEGF, HIF1α, NFκB, etc) and are involved in the regulation of cell survival, proliferation, or apoptosis. However, Müller cell alterations induced by high-glucose conditions were counteracted by the XIAP inhibitor embelin, and 26 proteins/phosphorylations (out of 47) were restored to their normal levels. Nine proteins, including NFκB p65, p-p38, tumor necrosis factor-α, urokinase-type plasminogen activator, CREB, IL-1β, HCAM, estrogen receptor-α, and p-Stat3, were involved in regulatory networks between XIAP and VEGF. CONCLUSIONS The current study suggests that XIAP may be a potential regulator that can mediate a series of pathological changes induced by high-glucose conditions in Müller cells. Therefore, embelin could be a potential agent for the prevention and treatment of diabetic retinopathy.
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Lu L, Xu X, Wang Z, Ye F, Fan X. Retinal and Choroidal Vascular Occlusion After Fat Injection Into the Temple Area. Circulation 2013; 128:1797-8. [PMID: 24126325 DOI: 10.1161/circulationaha.112.000397] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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108
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Durand AM, Belanger DP, Booth CH, Ye F, Chi S, Fernandez-Baca JA, Bhat M. Magnetism and phase transitions in LaCoO3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:382203. [PMID: 23988608 DOI: 10.1088/0953-8984/25/38/382203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Neutron scattering and magnetometry measurements have been used to study phase transitions in LaCoO3 (LCO). For H ≤ 100 Oe, evidence for a ferromagnetic (FM) transition is observed at Tc ≈ 87 K. For 1 kOe ≤ H ≤ 60 kOe, no transition is apparent. For all H, Curie-Weiss analysis shows predominantly antiferromagnetic (AFM) interactions for T > Tc, but the lack of long-range AFM order indicates magnetic frustration. We argue that the weak ferromagnetism in bulk LCO is induced by lattice strain, as is the case with thin films and nanoparticles. The lattice strain is present at the bulk surfaces and at the interfaces between the LCO and a trace cobalt oxide phase. The ferromagnetic ordering in the LCO bulk is strongly affected by the Co-O-Co angle (γ), in agreement with recent band calculations which predict that ferromagnetic long-range order can only take place above a critical value, γC. Consistent with recent thin film estimations, we find γC = 162.8°. For γ > γC, we observe power-law behavior in the structural parameters. γ decreases with T until the critical temperature, To ≈ 37 K; below To the rate of change becomes very small. For T < To, FM order appears to be confined to regions close to the surfaces, likely due to the lattice strain keeping the local Co-O-Co angle above γC.
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Shen Y, Wang P, Li Y, Ye F, Wang F, Wan X, Cheng X, Lu W, Xie X. miR-375 is upregulated in acquired paclitaxel resistance in cervical cancer. Br J Cancer 2013; 109:92-9. [PMID: 23778521 PMCID: PMC3708577 DOI: 10.1038/bjc.2013.308] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 05/27/2013] [Indexed: 12/28/2022] Open
Abstract
Background: Chemo-resistance is one of the key causal factors in cancer death and emerging evidences suggest that microRNAs (miRNAs) have critical roles in the regulation of chemo-sensitivity in cancers. Cervical cancer is one of the most common malignancies in women and insensitive to chemotherapy clinically. Methods: The differentially expressed miRNAs in cervical squamous cell carcinoma tissues were screened by using a microarray platform (μParaflo Sanger miRBase release 13.0). The expression of miR-375 was determined by stem-loop RT–PCR using 23 clinical cervical cancer samples and 2 cervical cancer cell lines. We exogenously upregulated miR-375 expression in SiHa and Caski cells using a pre-miRNA lentiviral vector transfection and observed its impact on paclitaxel sensitivity using MTS. The cells that stably overexpressed miR-375 were subcutaneously injected into mice to determine tumour growth and chemo-sensitivity in vivo. Results: Twenty-one differentially expressed miRNAs were found by miRNA microarray between pro- and post-paclitaxel cervical cancer tissues. Of those, miR-375 showed consistent high expression levels across paclitaxel-treated cervical cells and tissues. Paclitaxel induced upregulated miR-375 expression in a clear dose-dependent manner. Forced overexpression of miR-375 in cervical cancer cells decreased paclitaxel sensitivity in vitro and in vivo. Conclusion: Collectively, our results suggest that miR-375 might be a therapeutic target in paclitaxel-resistant cervical cancer.
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Wang Y, Ye F, Ke Q, Wu Q, Yang R, Bu H. Gender-dependent Histone Deacetylases Injury May Contribute to Differences in Liver Recovery Rates of Male and Female Mice. Transplant Proc 2013; 45:463-73. [DOI: 10.1016/j.transproceed.2012.06.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 06/08/2012] [Accepted: 06/26/2012] [Indexed: 02/07/2023]
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Liu Q, Qi XF, Ye F, Yao J, Xu J. Lack of mutations of G4.5 in three families from China with noncompaction of the ventricular myocardium. GENETICS AND MOLECULAR RESEARCH 2013; 12:53-8. [PMID: 23359024 DOI: 10.4238/2013.january.22.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To find the underlying cause of noncompaction of the ventricular myocardium (NVM), three Chinese families with probands who presented this problem were studied. After the family members were evaluated by echocardiography, the gene G4.5 (taffazin) was scanned by sequencing. Although X-linked inheritance could not be ruled out, NVM were thought to have a vague rule of inheritance in our data from 8 patients and 28 family members. We also did not identify any mutations in G4.5 in all samples. Our data suggest that other genes are responsible for the familial form of this disease.
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Rizal B, Ye F, Dhakal P, Chiles TC, Shepard S, McMahon G, Burns MJ, Naughton MJ. Imprint-Templated Nanocoax Array Architecture: Fabrication and Utilization. NATO SCIENCE FOR PEACE AND SECURITY SERIES B: PHYSICS AND BIOPHYSICS 2013. [DOI: 10.1007/978-94-007-5313-6_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Hwang J, Choi ES, Ye F, Dela Cruz CR, Xin Y, Zhou HD, Schlottmann P. Successive magnetic phase transitions and multiferroicity in the spin-one triangular-lattice antiferromagnet Ba3NiNb2O9. PHYSICAL REVIEW LETTERS 2012; 109:257205. [PMID: 23368494 DOI: 10.1103/physrevlett.109.257205] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 09/12/2012] [Indexed: 06/01/2023]
Abstract
We report the magnetic and electric properties of Ba3NiNb2O9, which is a quasi-two-dimensional spin-one triangular-lattice antiferromagnet with trigonal structure. At low T and with increasing magnetic field, the system evolves from a 120 degree magnetic ordering phase (A phase) to an up-up-down (uud) phase (B phase) with a change of slope at 1/3 of the saturation magnetization, and then to an "oblique" phase (C phase). Accordingly, the ferroelectricity switches on at each phase boundary with appearance of spontaneous polarization. Therefore, Ba3NiNb2O9 is a unique triangular-lattice antiferromagnet exhibiting both uud phase and multiferroicity.
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Song D, Cui M, Fan Z, Yang Y, Xue L, Zhang DY, Ye F. Abstract P2-05-19: Pathway-based analysis of breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p2-05-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Objective: Although HER2 and ER pathways are predominant pathways altered in breast cancer, it is now well accepted that many other signaling pathways are also involved in the pathogenesis of breast cancer, especially in triple negative breast cancer. The understanding of these additional pathways may assist in identifying new therapeutic approaches for breast cancer.
Methods: 13 invasive ductal carcinoma tissues and 5 benign breast tissues were analyzed for the mRNA expression level of 1243 cancer pathway-related genes using SmartChip (WaferGen, CA), a real-time PCR-base method. In addition, the levels of 154 cancer pathway-related proteins and phosphoproteins were measured using our innovative Protein Pathway Array.
Results: Out of 1,243 mRNAs, 68.7% were detected in breast cancer and 73 mRNAs were statistically significant between benign and cancer tissues. Of these mRNAs, 105 only expressed in breast cancer tissues and 33 mRNAs only expressed in normal breast tissues. Out of 154 proteins and phosphoproteins, 39% were detected in cancer tissues and 50 proteins were significantly differentiated between tumor and normal tissues. Interestingly, only 3 genes (CDK6, Vimentin and SLUG) showed decrease of both protein and mRNA. Six proteins (BCL6, CCNE1, PCNA, PDK1, SRC and XIAP) showed differentially expressed between tumor and normal tissues but no differences were observed at mRNA levels. Analyses of mRNA and protein data using Ingenuity Pathway Analysis showed more 15 pathways were altered in breast cancers and 6 of them shared between mRNAs and proteins, including p53, IL17, HGF, NGF, PTEN and PI3K/AKT.
Conclusion: There is a broad dysregulation of various pathways in breast cancer both at protein levels and mRNA levels. It is important to note that mRNA expression does not correlate with protein level, suggesting that different regulation mechanisms between proteins and mRNAs.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P2-05-19.
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Liao M, Ye F, Zhang B, Huang L, Xiao Q, Qin M, Mo L, Tan A, Gao Y, Lu Z, Wu C, Zhang Y, Zhang H, Qin X, Hu Y, Yang X, Mo Z. Erratum: Genome-wide association study identifies common variants at TNFRSF13B associated with IgG level in a healthy Chinese male population. Genes Immun 2012. [DOI: 10.1038/gene.2012.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pena-Abaurrea M, Ye F, Blasco J, Ramos L. Evaluation of comprehensive two-dimensional gas chromatography-time-of-flight-mass spectrometry for the analysis of polycyclic aromatic hydrocarbons in sediments. J Chromatogr A 2012; 1256:222-31. [PMID: 22883158 DOI: 10.1016/j.chroma.2012.07.060] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 07/06/2012] [Accepted: 07/18/2012] [Indexed: 12/01/2022]
Abstract
This study evaluates the feasibility of comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC-ToF MS) for the determination of the 15+1 EU PAHs in sediments. Experimental variables affecting the injection, chromatographic separation and analytical detection of the analytes have systematically been optimised. Under finally proposed conditions, a satisfactory resolution among critical pairs/groups of PAHs, including benz[a]anthracene, cyclopenta[cd]pyrene and chrysene, the three benzofluoranthene isomers, indeno[1,2,3-cd]pyrene from dibenz[a,h]anthracene (DahA), and DahA from dibenz[a,c]anthracene, has been achieved using DB-5 × BPX-50 as column combination with a run time of 1 h. The feasibility of the method for the analysis of real-life samples has been demonstrated by accurate determination of relevant target PAHs in the certified harbour sediment BCR-535 (deviations among certified concentration values and those calculated using the proposed method lower than 3%); and by successful application to sediments sampled from a relevant protected area located in the South of Spain. The low methodological limits of detection (LODs) obtained for most of the targeted PAHs (in the 5.7-60 μg/kg range, as calculated for real samples) guarantied accurate quantification of the target compounds at the low levels expected in these types of pristine matrices. The strong retention experienced by the heaviest dibenzopyrene isomers included in the study resulted in relatively high LODs for these analytes; nevertheless, these compounds were detected at concentration levels above the corresponding LOD in some of the analysed sediments. In addition, the enhanced identification power provided by GC × GC-ToF MS for the identification of non-target analytes allowed the tentative identification of a group of polynuclear aromatic thiophenes in some of the test samples. Finally, the potential of the use of normalised bubble plots for the fast screening of the potential PAH sources has been demonstrated.
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Liao M, Ye F, Zhang B, Huang L, Xiao Q, Qin M, Mo L, Tan A, Gao Y, Lu Z, Wu C, Zhang Y, Zhang H, Qin X, Hu Y, Yang X, Mo Z. Genome-wide association study identifies common variants at TNFRSF13B associated with IgG level in a healthy Chinese male population. Genes Immun 2012; 13:509-13. [DOI: 10.1038/gene.2012.26] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Xu J, Li Y, Wang F, Wang X, Cheng B, Ye F, Xie X, Zhou C, Lu W. Suppressed miR-424 expression via upregulation of target gene Chk1 contributes to the progression of cervical cancer. Oncogene 2012; 32:976-87. [PMID: 22469983 DOI: 10.1038/onc.2012.121] [Citation(s) in RCA: 175] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
MicroRNAs (miRNAs) act as important gene regulators in human genomes and their aberrant expression links to many malignancies. We previously identified a different characteristic miRNA expression profile in cervical cancer from that in cervical normal tissues, including the downregulated miR-424. However, the role and mechanism of miR-424 in cervical cancer still remain unknown. Here, we focused on identifying the tumor-suppressive function and clinical significance of miR-424 and exploring the mechanistic relevance by characterizing its target. We showed a significantly decreased expression of miR-424 in 147 cervical cancer tissues versus 74 cervical normal tissues by performing quantitative RT-PCR. In 147 cervical cancer tissue samples, low-level expression of miR-424 was positively correlated with poor tumor differentiation, advanced clinical stage, lymph node metastasis and other poor prognostic clinicopathological parameters. Further in vitro observations showed that enforced expression of miR-424 inhibited cell growth by both enhancing apoptosis and blocking G1/S transition, and suppressed cell migration and invasion in two human cervical cancer cell lines, SiHa and CaSki, implying that miR-424 functions as a tumor suppressor in the progression of cervical cancer. Interestingly, overexpression of miR-424 inhibited the expression of protein checkpoint kinase 1 (Chk1) and phosphorylated Chk1 (p-Chk1) at residues Ser345 and decreased the activity of luciferase-reporter containing the 3'-untranslated region (UTR) of Chk1 with predicted miR-424-binding site. Moreover, miR-424 expression levels were inversely correlated with Chk1 and p-Chk1 protein levels in both cervical cancer and normal tissues. Furthermore, RNAi-mediated knockdown of Chk1 decreased matrix metalloproteinase 9 expression and phenocopied the tumor suppressive effects of miR-424 in cell models. Taken together, our results identify a crucial tumor suppressive role of miR-424 in the progression of cervical cancer at least partly via upreglating the expression of Chk1 and p-Chk1, and suggest that miR-424 might be a candidate of prognostic predictor or an anticancer therapeutic target for cervical cancer patients.
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Wang Z, Jia R, Ge S, He T, Zhang Y, Yang Y, Wang Y, Shi W, Ji Y, Ye F, Chen P, Lu J, Sun J, Xu X, Zhou Y, Gu P, Luo M, Lu H, Fan X. Ocular complications of human immunodeficiency virus infection in eastern china. Am J Ophthalmol 2012; 153:363-369.e1. [PMID: 21982101 DOI: 10.1016/j.ajo.2011.07.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 07/29/2011] [Accepted: 07/30/2011] [Indexed: 11/15/2022]
Abstract
PURPOSE To investigate ocular complications in patients with HIV/AIDS in eastern China during the time of highly active antiretroviral therapy (HAART). DESIGN Prospective study. METHODS This study was carried out from August 1, 2009 to July 31, 2010. Recruited HIV/AIDS patients underwent a series of surveys and ophthalmologic and laboratory examinations (including CD4 level) at enrollment. RESULTS In this study, all 787 HIV/AIDS patients (1574 eyes) had a history of HAART. Of these patients, 28.72% (95% CI = 0.26-0.32) had a history of systemic disease and 26.30% (95% CI = 0.23-0.29) had ocular complications. Of these ocular complications, cytomegalovirus retinitis (CMVR) had the highest prevalence (10.6%, 83/787) and ocular microangiopathy had the second-highest prevalence (9.4%, 74/787). Among the patients with CMVR, 16.9% (14/83) suffered from immune recovery uveitis (IRU). Furthermore, 3.4% (27/787) of the recruited AIDS patients had neuro-ophthalmologic disorders. The mean logMAR visual acuity of the group with ocular complications was 0.47 ± 0.64, which was significantly different from the asymptomatic group (0.17 ± 0.39, P < .001). The median CD4 T-cell count of the group with ocular complications is 43 cells/μL, which was significantly different from the asymptomatic group (116.5 cells/μL, P < .001). CONCLUSIONS The study shows a high rate of treatable ocular complications among patients with HIV/AIDS in eastern China. HIV/AIDS treatment programs in China must be prepared to identify ocular complications and refer patients to the correct treatment facilities.
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Ye F, Chi S, Bao W, Wang XF, Ying JJ, Chen XH, Wang HD, Dong CH, Fang M. Common crystalline and magnetic structure of superconducting A2Fe4Se5 (A=K,Rb,Cs,Tl) single crystals measured using neutron diffraction. PHYSICAL REVIEW LETTERS 2011; 107:137003. [PMID: 22026892 DOI: 10.1103/physrevlett.107.137003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Indexed: 05/31/2023]
Abstract
Single-crystal neutron diffraction studies on superconductors A(2)Fe(4)Se(5), where A=Rb, Cs, (Tl, Rb), and (Tl, K) (T(c) ∼ 30 K), uncover the same Fe vacancy ordered crystal structure and the same block antiferromagnetic order as in K(2)Fe(4)Se(5). The Fe order-disorder transition occurs at T(S)=500-578 K, and the antiferromagnetic transition at T(N) = 471-559 K with an ordered magnetic moment ∼3.3μ(B)/Fe at 10 K. Thus, all recently discovered A intercalated iron selenide superconductors share the common crystalline and magnetic structure, which are very different from previous families of Fe-based superconductors, and constitute a distinct new 245 family.
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Reuter H, Ye F, Reichelt M, Vages J, Osthaar S, Schwitke S. Structure types of intermolecular tin halide interactions in diorgaotin dihalides. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311081591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Xing ZY, Zhao Q, Fu Y, Ye F. Synthesis and crystal structure of 4-(2-chlorophenylamino)-6-methoxy-2-phenylquinazoline. Chem Heterocycl Compd (N Y) 2011. [DOI: 10.1007/s10593-011-0805-1] [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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123
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Zhang X, Lin SM, Ye F, Chen TY, Liu M, Chen YR, Zheng SQ, Zhao YR, Zhang SL. An early decrease in serum HBeAg titre is a strong predictor of virological response to entecavir in HBeAg-positive patients. J Viral Hepat 2011; 18:e184-90. [PMID: 21692931 DOI: 10.1111/j.1365-2893.2010.01423.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Quantification of HBeAg levels has been found to be useful in monitoring and predicting the outcomes of interferon and lamivudine treatment in HBeAg-positive patients. The aim of this study was to determine whether quantification of HBeAg at baseline and on treatment could predict which patients would achieve HBeAg seroconversion after 96 weeks of entecavir therapy. Sixty-five HBeAg-positive naïve chronic hepatitis B patients who were treated with entecavir at a dose of 0.5 mg once daily for 96 weeks were evaluated. Serum HBV DNA levels were assessed at baseline, week 24, 48 and 96; serum HBeAg levels were assessed at baseline, week 12, 24, 48, 72 and 96. Serum HBeAg levels were associated with a higher likelihood of HBeAg seroconversion to entecavir at weeks 96 than serum HBV DNA levels both at baseline and on treatment (at baseline: OR = 9.932, P = 0.003 vs. OR = 5.045, P = 0.036; on treatment: OR = 112.5, P < 0.0001 vs. OR = 47.782, P < 0.0001). A maintained reduction in HBeAg > 65% of pretreatment HBeAg values after 24 weeks of entecavir therapy is the strongest predictor for HBeAg seroconversion at week 96 (OR = 70.578, P < 0.0001). Quantification of HBeAg at the start and early during therapy showed a higher predictive value than that of HBV DNA for HBeAg seroconversion by entecavir. A significant decrease in serum HBeAg levels at week 24 may be a useful on-treatment measurement in the early phase for predicting HBeAg seroconversion and identifying patients who will most likely benefit from finite entecavir treatment.
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Chen S, Gibson C, Kan J, Zhang J, Hu Z, Xu H, Xu T, Ye F, Tian N, Zhang J, Liu Z. AS-004 Dynamic Change Of Wall Shear Stress After Stenting Bifurcation Lesions: Subgroup Analysis From DKCRUSH-II Trial. Am J Cardiol 2011. [DOI: 10.1016/j.amjcard.2011.02.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chaudhury RP, Ye F, Fernandez-Baca JA, Lorenz B, Wang YQ, Sun YY, Mook HA, Chu CW. Robust ferroelectric state in multiferroic Mn1−xZnxWO4. PHYSICAL REVIEW B 2011; 83:014401. [DOI: 10.1103/physrevb.83.014401] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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