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Patani N, Jiang W, Mokbel K. Tumour suppressor function of CHIP & LOX in human breast cancer. Eur J Surg Oncol 2009. [DOI: 10.1016/j.ejso.2009.07.143] [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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427
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Yang R, Xu S, Jiang W, Zhou G, Wang J. Integral Dose Variation in Three-dimensional Conformal Radiotherapy, Intensity-modulated Radiotherapy, and Helical Tomotherapy. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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428
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Yang R, Xu S, Jiang W, Xie C, Wang J. Integral Dose in Three-dimensional Conformal Radiotherapy, Intensity-modulated Radiotherapy and Helical Tomotherapy. Clin Oncol (R Coll Radiol) 2009; 21:706-12. [DOI: 10.1016/j.clon.2009.08.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Revised: 07/16/2009] [Accepted: 08/02/2009] [Indexed: 11/25/2022]
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429
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Li CL, Liu DL, Jiang YT, Zhou YB, Zhang MZ, Jiang W, Liu B, Liang JP. Prevalence and molecular diversity of Archaea in subgingival pockets of periodontitis patients. ACTA ACUST UNITED AC 2009; 24:343-6. [PMID: 19572899 DOI: 10.1111/j.1399-302x.2009.00514.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION The aim of this study was to investigate the prevalence and molecular diversity of Archaea in the subgingival crevices of patients with chronic periodontitis. METHODS Subgingival plaque was collected from 41 patients with chronic periodontitis and 15 healthy subjects. The prevalence of Archaea in those plaque samples was tested by polymerase chain reaction with two broad-range archaeal primer sets. Amplicons from eight Archaea-positive plaque samples were cloned and sequenced for molecular diversity analysis using one of these two primer sets and a novel third primer set. RESULTS Archaea were detected in the subgingival plaque of patients with chronic periodontitis at a prevalence of 70.7-73.2%, but were not detected in healthy subjects. Using one primer set, all sequences of the archaeal amplicons were identified as Methanobrevibacter oralis-like species. With another primer set, the amplicons were also found to be identical to the uncultured M. oralis-like species except one phylotype was found to belong to the class Thermoplasmata. CONCLUSION Archaea might be correlated with periodontal diseases. The diversity of Archaea associated with periodontitis was limited. Almost all sequenced amplicons fell into the genus Methanobrevibacter of the Euryarcheota phylum. M. oralis-like species was the predominant but non-exclusive archaeon in the subgingival dental plaque of patients with periodontitis.
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Zhou JC, Wu DF, Jiang W, Li YD. Catalytic Combustion of Toluene over a Copper-Manganese-Silver Mixed-Oxide Catalyst Supported on a Washcoated Ceramic Monolith. Chem Eng Technol 2009. [DOI: 10.1002/ceat.200900151] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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431
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Zhao Y, Xu Y, Li J, Fan W, Jiang W. Profile of volatile compounds in 11 brandies by headspace solid-phase microextraction followed by gas chromatography-mass spectrometry. J Food Sci 2009; 74:C90-9. [PMID: 19323737 DOI: 10.1111/j.1750-3841.2008.01029.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A headspace solid-phase microextraction (HS-SPME) method coupled with gas chromatography-mass spectrometry (GC-MS) was applied for the qualitative or semiquantitative characterization of brandy volatiles. SPME variables (SPME fiber, extraction temperature and time, and ethanol concentration) were optimized. A total of 144 compounds were from the brandies' volatiles, tentatively identified or identified by comparing mass spectra and retention indices of the standards or from literature. Of these, 57 are common to 11 brandies. They were mainly represented by esters and alcohols, such as 2-methyl propanol, 3-methyl butanol, 1-hexanol, ethyl octanoate, and ethyl decanoate, which were quantitatively determined. Chromatographic peaks were integrated using selective ion method (SIM) and the semiquantitative data analyzed using principal component analysis (PCA) and cluster analysis (CA) to study relationships between volatile composition and brandy. Eleven brandies were differentiated into 3 groups: 1 for Hennessy VSOP and XO samples, 1 for Changyu PEGASE VSOP and XO-1, 2, 3 samples, and the other for Changyu PEGASE brandy and VO, Taro brandy, Baiyang River brandy, and Wealth XO samples. The classification of groups is consistent with the brandy samples by variety and grade.
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432
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Huang XE, Tang J, Feng J, Jiang W, Pan L, Chen J, Sun W. Relationship of XRCC1 and XPD genetic polymorphisms and clinical responses to platinum-based chemotherapy in advanced non-small cell lung cancer. Pharmacotherapy 2009. [DOI: 10.1016/j.biopha.2009.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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433
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Zhang Z, Liu J, Xu Y, Jiang W, Hong B, Xie Z, Si S. Abstract: P438 IMB6791 STIMULATES CHOLESTEROL EFFLUX BY INCREASING THE BINDING OF APOLIPOPROTEIN A-I TO ATP-BINDING CASSETTE TRANSPORTER A1. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70733-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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434
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Zhang L, Jiang W, Zhang Y, Xu R, Qian C, Resau JH, VandenBeldt K. Predictive values of intratumoral microvascular density (MVD) in the patients (pts) with advanced NSCLC and metastatic colorectal cancer (mCRC) receiving chemotherapy plus bevacizumab. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e14618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e14618 Background: The using of bevacizumab (VEGFR inhibitor) combined with chemotherapy represents a most noticeable recent advance in clinical oncology for significantly improving pts’ survival in several tumor types. There is an unmet need for seeking biomarker(s) to predict the treatment response of bevacizumab and identify the pts sensitive to the treatment. Our study was designed to investigate the predictive value of intratumoral MVD in NSCLC and mCRC pts treated with bevacizumab. Method: Sixteen NSCLC (stage IIIB/IV) and 15 mCRC pts who underwent chemotherapy (paclitaxel+carbo for NSCLC and IFL for CRC, respectively) combined with Bevacizumab were included into this study. The paraffin-embedded tumor samples (13/16 NSCLC and all CRC samples were collected from primary tumor) were sectioned and stained immunohistochemically for blood vessel markers (CD34 and CD31) to identify the characteristics of intratumoral vasculature. A computerized image analysis program was used to quantitatively calculate the intratumoral MVD (Yao et al., Clin Cancer Res 2007). Treatment response was evaluated by computed tomography scanning. Results: Two types of blood vessel, undifferentiated (CD31+/CD34-) and differentiated (CD34+), were identified. For the 16 NSCLC pts, a positive correlation was found between the largest tumor shrinkage percentage (evaluate in the primary tumors and metastases) and the total (CD31+) MVD as well as the undifferentiated (CD31+/CD34-) MVD, with Spearman's correlation coefficients equaled to 0.567 (p=0.022) and 0.576 (p=0.019), respectively. However, no significant correlation between tumor shrinkage and MVD was found in CRC pts, in which the treatment response was evaluated in metastatic lesions while the MVD was calculated in primary tumor. Conclusion: This exploratory analysis suggests higher total vessel and undifferentiated vessel MVD appeared to be predictive of bevacizumab treatment advantage for advance NSCLC pts.Our study also indicated that the MVD of primary lesions did not correlate with the treatment response of metastatic lesions in CRC pts. Further studies are needed to verify the predictive role of MVD in the treatment of bevacizumab in NSCLC. [Table: see text]
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435
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Fillingame RH, Jiang W, Dmitriev OY. The oligomeric subunit C rotor in the fo sector of ATP synthase: unresolved questions in our understanding of function. J Bioenerg Biomembr 2009; 32:433-9. [PMID: 15254378 DOI: 10.1023/a:1005604722178] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We have proposed a model for the oligomeric c-rotor of the F(o) sector of ATP synthase and its interaction with subunit a during H+-transport driven rotation. The model is based upon the solution structure of monomeric subunit c, determined by NMR, and an extensive series of cross-linking distance constraints between c subunits and between subunits c and a. To explain the complete set of cross-linking data, we have suggested that the second transmembrane helix rotates during its interaction with subunit a in the course of the H+-translocation cycle. The H+-transport coupled rotation of this helix is proposed to drive the stepwise movement of the c-oligomeric rotor. The model is testable and provides a useful framework for addressing questions raised by other experiments.
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436
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Yang C, Jiang W, Chen DH, Adiga U, Ng EG, Chiu W. Estimating contrast transfer function and associated parameters by constrained non-linear optimization. J Microsc 2009; 233:391-403. [PMID: 19250460 DOI: 10.1111/j.1365-2818.2009.03137.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The three-dimensional reconstruction of macromolecules from two-dimensional single-particle electron images requires determination and correction of the contrast transfer function (CTF) and envelope function. A computational algorithm based on constrained non-linear optimization is developed to estimate the essential parameters in the CTF and envelope function model simultaneously and automatically. The application of this estimation method is demonstrated with focal series images of amorphous carbon film as well as images of ice-embedded icosahedral virus particles suspended across holes.
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437
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Zhang Y, Liu Y, Jiang W, Pan XH, Jin WQ, Ai F, Wang HC. Effect of axial vibration on Bi 12SiO 20crystal growth by vertical Bridgman technique. CRYSTAL RESEARCH AND TECHNOLOGY 2009. [DOI: 10.1002/crat.200800541] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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438
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Hiscox S, Jordan N, Crandon-Lewis A, Jiang W, Nicholson RI, Gee J. Overexpression of L1CAM accompanies acquired endocrine resistance and is associated with the development of an aggressive cell phenotype. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-3028] [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
Abstract #3028
Background: Acquired resistance to endocrine therapies is associated with a gain in aggressive features in vitro which may impact on tumour spread in vivo. To identify potential candidate molecules which may promote this adverse cell behaviour, we performed microarray analysis on MCF-7 cell models of fulvestrant resistance ('FasR' cells) applying a commercial algorithm for signalling network discovery. We have subsequently investigated the significance of overexpression of L1CAM, a cell-surface adhesion molecule implicated in a MAPK signalling network and recently associated with tumour metastasis, in FasR cells and in clinical tissue.
 Materials and Methods: A network analysis algorithm was applied to t-test significant Affymetrix gene lists derived from FasR vs. MCF-7 cells (Almac Diagnostics). Subsequent to revealing a prominent L1CAM network, L1CAM gene and protein expression were assessed using RT-PCR, Western blotting and immunofluorescence. Inhibition of L1CAM was achieved using siRNA transfection. Cell invasion and migration were measured by seeding onto Matrigel- or fibronectin-coated microporous membranes respectively. After 48 hours, invasive/migratory cells were fixed, stained and counted. Analysis of cell signalling molecules was determined using Western blotting with phospho-specific antibodies. Clinical significance of L1CAM expression was determined by analysis of L1CAM expression in tumour (n=101) vs. normal (n=23) breast tissue using Q-PCR.
 Results: Development of fulvestrant resistance in MCF7 cells was associated with ER loss and a gain in migratory and invasive capacity in vitro. L1CAM was overexpressed at both gene (p<0.05) and protein (p<0.01) level in FasR cells whereas little or no L1CAM was detectable in MCF7 cells confirming microarray findings. Network and ontological analysis predicted L1CAM lies upstream of an ERK2 network (26 genes; p<0.0001) impinging on transcription factors/regulators which may promote aggressive cell behaviour. In agreement, siRNA-mediated inhibition of L1CAM suppressed the activity of nuclear MAP kinase and reduced the intrinsic migratory and invasive nature of FasR cells in vitro. Preliminary analysis indicated L1CAM expression was inversely associated with ER status (p<0.01) and reduced overall survival (p=0.01).
 Conclusions: These data suggest that L1CAM overexpression associates with emergence of ER-negative fulvestrant resistance in breast cancer, where it may confer a highly motile and invasive phenotype. Additionally, our clinical studies suggest L1CAM may also contribute to inherently aggressive, ER-negative breast cancers. L1CAM signalling may thus provide a new therapeutic target to subvert such aggressive states in vivo.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 3028.
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Noble S, Parr C, Yee L, Jiang W. The effects of metastasis supressor-1 gene on the migratory properties of non small cell lung cancer. Lung Cancer 2009. [DOI: 10.1016/s0169-5002(09)70007-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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440
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Jiang W, Pisetsky DS. Expression of high mobility group protein 1 in the sera of patients and mice with systemic lupus erythematosus. Ann Rheum Dis 2008; 67:727-8. [PMID: 18408114 DOI: 10.1136/ard.2007.074484] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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441
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Mokbel K, Patani N, Jiang W. Osteopontin Expression Profiles Predict Pathological & Clinical Outcome in Breast Cancer. Eur J Surg Oncol 2008. [DOI: 10.1016/j.ejso.2008.06.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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442
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Mokbel K, Worku D, Jiang W. Evidence of a tumour suppressive function of E2F1 genes in human breast cancer. Eur J Surg Oncol 2008. [DOI: 10.1016/j.ejso.2008.06.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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443
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Chen M, Du J, Jiang W, Zuo W, Wang F, Li M, Wu Z, Chan H, Zhou W. Functional expression of cystic fibrosis transmembrane conductance regulator in rat oviduct epithelium. Acta Biochim Biophys Sin (Shanghai) 2008. [DOI: 10.1093/abbs/40.10.864] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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444
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Jiang W, Bai Z, Zhang D, Shi Y, Yong J, Chen S, Ding M, Deng H. Differentiation of mouse nuclear transfer embryonic stem cells into functional pancreatic beta cells. Diabetologia 2008; 51:1671-9. [PMID: 18581093 DOI: 10.1007/s00125-008-1065-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2008] [Accepted: 04/18/2008] [Indexed: 10/21/2022]
Abstract
AIMS/HYPOTHESIS Therapeutic cloning has been reported to have potential in the treatment of several degenerative diseases. However, it has yet to be determined whether mouse nuclear transfer-embryonic stem cells (NT-ESCs) can be differentiated into pancreatic beta cells and used to reverse diabetes in an animal model. METHODS We first used the somatic nuclear transfer technique to generate mouse NT-ESCs and then developed a chemically defined stepwise protocol to direct the NT-ESCs into functional pancreatic beta cells. We examined the gene expression pattern of the differentiated NT-ESCs and transplanted the NT-ESC-derived insulin-producing cells into recipient diabetic mice. RESULTS Four mouse NT-ESC lines were first established using an improved nuclear transfer technique and insulin-producing cells were efficiently generated from NT-ESCs by mimicking pancreatic in vivo development. Most of the insulin-producing cells that we generated co-produced pancreatic and duodenal homeobox 1, but not glucagon at the final stage of this differentiation method, which differed from the insulin and glucagon co-production reported by other groups. The differentiated NT-ESCs were able to release insulin in response to glucose stimuli and normalise the blood glucose level of diabetic mice for at least 2 months. CONCLUSIONS/INTERPRETATION These results demonstrate the potential of therapeutic cloning for cell therapy of type 1 diabetes in a mouse model.
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Jiang W, Baker M, Jakata J, Weigele P, King J, Chiu W. Backbone structure of the infectious Epsilon15 virus capsid revealed by electron cryomicroscopy. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308098528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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446
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Ahboucha S, Jiang W, Chatauret N, Mamer O, Baker GB, Butterworth RF. Indomethacin improves locomotor deficit and reduces brain concentrations of neuroinhibitory steroids in rats following portacaval anastomosis. Neurogastroenterol Motil 2008; 20:949-57. [PMID: 18482252 DOI: 10.1111/j.1365-2982.2008.01132.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hepatic encephalopathy (HE) is a neuropsychiatric complication of both acute and chronic liver failure characterized by progressive neuronal inhibition. Some neurosteroids are potent positive allosteric modulators of the gamma-aminobutyric acid (GABA)-A receptor complex, and 'increased GABAergic tone' has been proposed to explain the neuroinhibition characteristics of HE. Brain levels of the neurosteroids pregnenolone, allopregnanolone and tetrahydrodesoxycorticosterone (THDOC) and the functional status of the GABA-A receptor complex were assessed in rats following portacaval anastomosis (PCA). Effects of indomethacin, an inhibitor of the 3alpha-hydroxysteroid dehydrogenase enzyme involved in neurosteroid synthesis, on PCA rat locomotor activity and brain neurosteroid levels were also assessed. Significant increases of the neurosteroid pregnenolone (2.6-fold), allopregnanolone (1.7-fold) and THDOC (4.7-fold) were observed in brains of PCA rats. Brain levels of these neurosteroids were in the nanomolar range, sufficient to exert positive allosteric modulatory effects at the GABA-A receptor. Indomethacin (0.1-5 mg kg(-1)) ameliorated dose-dependently the locomotor deficit of PCA rats and concomitantly normalized brain levels of allopregnanolone and THDOC. Increased brain levels of neurosteroids with positive allosteric modulatory actions at the neuronal GABA-A receptor offer a cogent explanation for the notion of 'increased GABAergic tone' in HE. Pharmacological approaches using agents that either reduce neurosteroid synthesis or modulate the neurosteroid site on GABA-A receptor could offer new therapeutic tools for the management and treatment of HE.
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Xiao L, Xu H, Zhang Y, Wei Z, He J, Jiang W, Li X, Dyck LE, Devon RM, Deng Y, Li XM. Quetiapine facilitates oligodendrocyte development and prevents mice from myelin breakdown and behavioral changes. Mol Psychiatry 2008; 13:697-708. [PMID: 17684494 DOI: 10.1038/sj.mp.4002064] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recent neuroimaging and postmortem studies have reported abnormalities in white matter of schizophrenic brains, suggesting the involvement of oligodendrocytes in the etiopathology of schizophrenia. This view is being supported by gene microarray studies showing the downregulation of genes related to oligodendrocyte function and myelination in schizophrenic brain compared to control subjects. However, there is currently little information available on the response of oligodendrocytes to antipsychotic drugs (APDs), which could be invaluable for corroborating the oligodendrocyte hypothesis. In this study we found: (1) quetiapine (QUE, an atypical APD) treatment in conjunction with addition of growth factors increased the proliferation of neural progenitors isolated from the cerebral cortex of embryonic rats; (2) QUE directed the differentiation of neural progenitors to oligodendrocyte lineage through extracellular signal-related kinases; (3) addition of QUE increased the synthesis of myelin basic protein and facilitated myelination in rat embryonic cortical aggregate cultures; (4) chronic administration of QUE to C57BL/6 mice prevented cortical demyelination and concomitant spatial working memory impairment induced by cuprizone, a neurotoxin. These findings suggest a new neural mechanism of antipsychotic action of QUE, and help to establish a role for oligodendrocytes in the etiopathology and treatment of schizophrenia.
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448
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Gow A, Southwood CM, Garbern J, Jiang W. The unfolded protein response is activated in Pelizaeus-Merzbacher disease. J Neurochem 2008. [DOI: 10.1046/j.1471-4159.81.s1.8_3.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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449
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Jiang W, Zhang J, Tian Z. Functional characterization of interleukin-15 gene transduction into the human natural killer cell line NKL. Cytotherapy 2008; 10:265-74. [PMID: 18418772 DOI: 10.1080/14653240801965156] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Genetic modification of natural killer (NK) cells is a potential approach to gene-based immunotherapy of cancer. We created human interleukin-15 (hIL-15) gene-modified NKL cells and investigated their functional characterization in vitro. METHODS A recombinant vector (pcDNA3-IL15) or control vector (pcDNA3) was transferred into NKL cells by an electroporation method. Standard reverse transcriptase-polymerase chain reaction (RT-PCR), flow cytometry and MTT methods were performed for NK cell proliferation, apoptosis, cytotoxicity assays and gene expression tests. RESULTS Compared with parental NKL cells, hIL-15 gene modification promoted NK cell proliferation at low doses of IL-2 and inhibited cell apoptosis, which was associated with the up-regulation of anti-apoptosis genes Bcl-2, Bcl-xl and Mcl-1 as well as the down-regulation of apoptosis genes Bim and Noxa. Moreover, the anti-tumor activity of hIL-15 gene-transduced NKL cells against human hepatoma cancer cell line HepG2, H7402 and PLC/PRF-5 cells was enhanced, at least partly, through increasing expression of cytotoxicity-associated genes, including interferon (IFN)-gamma, perforin and FasL. DISCUSSION The hIL-15 genetic modification could improve the proliferation, anti-apoptosis and natural cytotoxicity of NKL cells against hepatocarcinoma cells. These data suggest that hIL-15 gene-modified NKL cells could be useful for clinical cancer immunotherapy in the future.
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Ye B, Jiang W, Mok SC, Cramer D. Gingkolide B is a potential therapeutic agent in ovarian cancer through PAF-PAFR signaling pathways. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.16538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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