276
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Huang JJ, Jiang WQ, Lin TY, Huang Y, Xu RH, Huang HQ, Li ZM. Absolute lymphocyte count is a novel prognostic indicator in extranodal natural killer/T-cell lymphoma, nasal type. Ann Oncol 2010; 22:149-155. [PMID: 20595450 DOI: 10.1093/annonc/mdq314] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND extranodal natural killer (NK)/T-cell lymphoma (ENKL) is a heterogeneous entity with poor survival, requiring risk stratification in affected patients. We proposed absolute lymphocyte count (ALC) as a new prognostic factor in ENKL. PATIENTS AND METHODS we retrospectively analyzed 128 patients newly diagnosed with ENKL. Independent prognostic factors of survival were determined by Cox regression analysis. RESULTS patients with low ALC (<1.0 × 10(9)/l) at diagnosis tended to have more adverse clinical features. Patients with high ALC (≥1.0 × 10(9)/l) at diagnosis had better overall survival (OS; P < 0.0001) and progression-free survival (PFS; P<0.0001), and achieved higher complete remission rates (P=0.001). Multivariate analysis with known prognostic factors showed that ALC, B symptoms and advanced stage were independent predictors for OS and PFS. Using the International Prognostic Index, Prognostic Index for Peripheral T-cell lymphoma unspecified, or Korean Prognostic Index for nasal NK/T-cell lymphoma, the majority of patients were in the low-risk category (with no or one adverse factor). ALC was helpful to differentiate the low-risk patients with different survival outcomes (P < 0.0001). CONCLUSIONS our data suggest that ALC at diagnosis is a novel, powerful predictor of prognosis in ENKL. Immune status at diagnosis might have an important influence on survival in patients with ENKL.
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277
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Xu JZ, Chen T, Yang CL, Li ZM, Mao YM, Zeng BQ, Hsiao BS. Isothermal Crystallization of Poly(l-lactide) Induced by Graphene Nanosheets and Carbon Nanotubes: A Comparative Study. Macromolecules 2010. [DOI: 10.1021/ma100304n] [Citation(s) in RCA: 287] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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278
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Wang Y, Pan JL, Mao Y, Li ZM, Li L, Hsiao BS. Spatial Distribution of γ-Crystals in Metallocene-Made Isotactic Polypropylene Crystallized under Combined Thermal and Flow Fields. J Phys Chem B 2010; 114:6806-16. [DOI: 10.1021/jp1002484] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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279
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Yi X, Xu L, Wang YL, Zhong GJ, Ji X, Li ZM. Morphology and properties of isotactic polypropylene/poly(ethylene terephthalate) in situ microfibrillar reinforced blends: Influence of viscosity ratio. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.12.027] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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280
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Li B, Zhang YC, Li ZM, Li SN, Zhang XN. Easy Fabrication and Resistivity-Temperature Behavior of an Anisotropically Conductive Carbon Nanotube−Polymer Composite. J Phys Chem B 2009; 114:689-96. [DOI: 10.1021/jp9042396] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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281
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Wu ZL, Zheng SS, Li ZM, Qiao YY, Aau MY, Yu Q. Polycomb protein EZH2 regulates E2F1-dependent apoptosis through epigenetically modulating Bim expression. Cell Death Differ 2009; 17:801-10. [PMID: 19893569 DOI: 10.1038/cdd.2009.162] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Deregulation of the pRB/E2F pathway, which occurs frequently in human malignancy, is often associated with inappropriate proliferation and/or apoptosis. While the role of E2F1 in apoptosis induction has been well-established, it remains unclear how this pro-apoptotic activity is regulated in cancer. Here we describe EZH2, an oncogenic polycomb histone methyltransferase and an E2F1 target, as an important regulator of E2F1-dependent apoptosis. We show that E2F1 induces EZH2 expression, which in turn antagonizes the induction of E2F1 pro-apoptotic target Bim expression. RNAi-mediated gene depletion of EZH2 enhances E2F1-dependent Bim expression, thereby promoting the pro-apoptotic activity of E2F1. Hence, the concomitant induction of EZH2 and Bim by E2F1 constitutes a fail-safe mechanism to allow tumor cells with aberrant E2F1 activity to evade apoptosis. These findings reveal a novel mechanism by which the apoptotic activity of E2F1 is restrained in human cancer and also provide the first evidence that EZH2 directly regulates apoptotic process in cancer cells.
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282
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Xu HS, Dai XJ, Lamb PR, Li ZM. Poly(L
-lactide) crystallization induced by multiwall carbon nanotubes at very low loading. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/polb.21830] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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283
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Meng XY, Ye L, Zhang XG, Tang PM, Tang JH, Ji X, Li ZM. Effects of expandable graphite and ammonium polyphosphate on the flame-retardant and mechanical properties of rigid polyurethane foams. J Appl Polym Sci 2009. [DOI: 10.1002/app.30485] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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284
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Gao JF, Yan DX, Huang HD, Dai K, Li ZM. Positive temperature coefficient and time-dependent resistivity of carbon nanotubes (CNTs)/ultrahigh molecular weight polyethylene (UHMWPE) composite. J Appl Polym Sci 2009. [DOI: 10.1002/app.30468] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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285
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Chen T, Zeng B, Liu JL, Dong JH, Liu XQ, Wu Z, Yang XZ, Li ZM. High throughput exfoliation of graphene oxide from expanded graphite with assistance of strong oxidant in modified Hummers method. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/188/1/012051] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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286
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Zhang RC, Lu A, Xu Y, Min M, Xia JQ, Zhou JH, Huang YG, Li ZM. Equilibrium melting temperature and spherulitic growth rate of poly(phenylene sulfide). Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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287
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Ye L, Meng XY, Ji X, Li ZM, Tang JH. Synthesis and characterization of expandable graphite–poly(methyl methacrylate) composite particles and their application to flame retardation of rigid polyurethane foams. Polym Degrad Stab 2009. [DOI: 10.1016/j.polymdegradstab.2009.03.016] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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288
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Chen YH, Zhong GJ, Wang Y, Li ZM, Li L. Unusual Tuning of Mechanical Properties of Isotactic Polypropylene Using Counteraction of Shear Flow and β-Nucleating Agent on β-Form Nucleation. Macromolecules 2009. [DOI: 10.1021/ma900411f] [Citation(s) in RCA: 183] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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289
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Hu X, An H, Li ZM, Geng Y, Li L, Yang C. Origin of Carbon Nanotubes Induced Poly(l-Lactide) Crystallization: Surface Induced Conformational Order. Macromolecules 2009. [DOI: 10.1021/ma802758k] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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290
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Ye L, Meng XY, Liu XM, Tang JH, Li ZM. Flame-retardant and mechanical properties of high-density rigid polyurethane foams filled with decabrominated dipheny ethane and expandable graphite. J Appl Polym Sci 2009. [DOI: 10.1002/app.29242] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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291
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Chen ZY, Zhang DM, Li ZM, Yang FX. The effects of quasi Gaussian size distributions on dynamic behavior of a one-dimensional granular gas. POWDER TECHNOL 2009. [DOI: 10.1016/j.powtec.2008.04.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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292
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Bian XC, Tang JH, Li ZM. Flame retardancy of whisker silicon oxide/rigid polyurethane foam composites with expandable graphite. J Appl Polym Sci 2008. [DOI: 10.1002/app.28921] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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293
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Li B, Xu XB, Li ZM, Song YC. Manipulating the conductivity of carbon-black-filled immiscible polymer composites by insulating nanoparticles. J Appl Polym Sci 2008. [DOI: 10.1002/app.28573] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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294
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Fan XY, Ma H, Guo J, Li ZM, Cheng ZH, Guo SQ, Zhao GP. A novel differential expression system for gene modulation in Mycobacteria. Plasmid 2008; 61:39-46. [PMID: 18835406 DOI: 10.1016/j.plasmid.2008.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2008] [Revised: 08/05/2008] [Accepted: 09/10/2008] [Indexed: 11/25/2022]
Abstract
Tuberculosis (TB) remains a major global health problem, and successful genetic manipulation of mycobacteria is crucial for developing new approaches to study the mechanism of pathogenesis of Mycobacterium tuberculosis (M.tb) and to combat TB. In this study, a series of M.tb furA gene operator/promoter (pfurA) mutants were generated aiming at optimization of the promoter activities in mycobacterial strains. Measured by the lacZ gene-fusion reporter system, change of the initial codon GTG to the preferred ATG resulted in a double increase of beta-galactosidase activity, while a 6-bp substitution in the conserved FurA binding AT-rich region upstream of furA gene led to 4-6 folds increase of the activity. It is significant that combination of both mutations showed about 10 folds of beta-galactosidase activity higher than that of the prototype pfurA. Furthermore, all of the furA promoters were expressed continuously in vivo during intracellular growth of Mycobacterium bovis BCG, and were induced early upon infection in macrophages. Employing the series of pfurA-based differential expression vectors, M.tb chimeric antigen Ag856A2 known for its excellent immunogenicity, was shown to be expressed at different levels in the recombinant Mycobacterium smegmatis and BCG strains. These results indicated that this differential expression system is feasible to express any target antigen of interest in a modular fashion for the study of gene regulation in mycobacterial strains, and also for the development of different recombinant BCG vaccine candidates against TB or other infectious diseases, which would be beneficial for elicitation of optimal immune response.
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295
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Zhong GJ, Li ZM, Li L, Shen K. Crystallization of oriented isotactic polypropylene (iPP) in the presence of in situ poly(ethylene terephthalate) (PET) microfibrils. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.07.056] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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296
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Dai K, Li ZM, Xu XB. Electrically conductive in situ microfibrillar composite with a selective carbon black distribution: An unusual resistivity–temperature behavior upon cooling. POLYMER 2008. [DOI: 10.1016/j.polymer.2007.12.043] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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297
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Pan JL, Li ZM. Double-yielding behavior in injection-molded polycarbonate/high-density polyethylene/ethylene–vinyl acetate copolymer blends. J Appl Polym Sci 2008. [DOI: 10.1002/app.27569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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298
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Bian XC, Tang JH, Li ZM. Flame retardancy of hollow glass microsphere/rigid polyurethane foams in the presence of expandable graphite. J Appl Polym Sci 2008. [DOI: 10.1002/app.27786] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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299
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Li ZM, Liu SS, Liu YQ, Ye GY. Temperature-related fitness costs of resistance to spinosad in the diamondback moth, Plutella xylostella (Lepidoptera: Plutelidae). BULLETIN OF ENTOMOLOGICAL RESEARCH 2007; 97:627-635. [PMID: 17997877 DOI: 10.1017/s0007485307005366] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Fitness costs associated with resistance genes expressed in the absence of insecticides affect the evolution of insecticide resistance and the outcome of resistance management programmes. However, measurements of fitness costs may not be straightforward as they vary with environmental conditions. The diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), has developed resistance to spinosad, the first insecticide of the Naturalyte class, after only a few years of field application of this product. In this study, we compared the performance of two homogenous strains of P. xylostella, one susceptible (SS) and the other resistant (RR) to spinosad at an unfavourable, low natural temperature regime, a favourable median-fluctuating temperature regime and an unfavourable high-fluctuating temperature regime. The RR strain showed only marginal fitness cost at the median temperature regime. At the low temperature regime, the RR strain failed to produce any viable offspring, while the SS strain achieved positive population growth. At the high temperature regime, the RR strain showed a 33% decrease in intrinsic rate of increase compared to the SS strain. The results demonstrate that fitness costs of resistance to spinosad are temperature-dependent, increasing in scale at unfavourably low and high temperatures; costs were particularly high at low temperatures. Suggestions for designing effective management programmes are made to delay or avoid development of resistance to spinosad by P. xylostella under different temperature conditions.
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300
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Zhong GJ, Li ZM, Li LB, Mendes E. Crystalline morphology of isotactic polypropylene (iPP) in injection molded poly(ethylene terephthalate) (PET)/iPP microfibrillar blends. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.01.056] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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