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      1. Author :
        Noberini, R.; Rubio de la Torre, E.; Pasquale, E. B.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Cell Adh Migr
      6. Products :
      7. Volume :
        6
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        PC-3M-luc-C6, PC-3M-luc, IVIS, Bioware, Prostate cancer, Bioluminescence, Animals; Chromatography, Liquid; Enzyme-Linked Immunosorbent Assay; Ephrins/genetics/*metabolism; Humans; Mass Spectrometry/*methods; Mice; Receptor, EphA1/genetics/*metabolism
      12. Abstract :
        The Eph receptor tyrosine kinase family includes many members, which are often expressed together in various combinations and can promiscuously interact with multiple ephrin ligands, generating intricate networks of intracellular signals that control physiological and pathological processes. Knowing the entire repertoire of Eph receptors and ephrins expressed in a biological sample is important when studying their biological roles. Moreover, given the correlation between Eph receptor/ephrin expression and cancer pathogenesis, their expression patterns could serve important diagnostic and prognostic purposes. However, profiling Eph receptor and ephrin expression has been challenging. Here we describe a novel and straightforward approach to catalog the Eph receptors present in cultured cells and tissues. By measuring the binding of ephrin Fc fusion proteins to Eph receptors in ELISA and pull-down assays, we determined that a mixture of four ephrins is suitable for isolating both EphA and EphB receptors in a single pull-down. We then used mass spectrometry to identify the Eph receptors present in the pull-downs and estimate their relative levels. This approach was validated in cultured human cancer cell lines, human tumor xenograft tissue grown in mice, and mouse brain tissue. The new mass spectrometry approach we have developed represents a useful tool for the identification of the spectrum of Eph receptors present in a biological sample and could also be extended to profiling ephrin expression.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22568954
      14. Call Number :
        PKI @ kd.modi @ 8
      15. Serial :
        10538
      1. Author :
        Shiota, M.; Zardan, A.; Takeuchi, A.; Kumano, M.; Beraldi, E.; Naito, S.; Zoubeidi, A.; Gleave, M. E.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Cancer Res
      6. Products :
      7. Volume :
        72
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        PC-3M-luc-C6, PC-3M-luc, IVIS, Bioware, Prostate cancer, Bioluminescence, Animals; Base Sequence; Blotting, Western; Chromatin Immunoprecipitation; Clusterin/genetics/*physiology; DNA Primers; Epithelial-Mesenchymal Transition/*physiology; Humans; Male; Mice; *Neoplasm Metastasis; Nuclear Proteins/*physiology; Promoter Regions, Genetic; Prostatic Neoplasms/*pathology; Reverse Transcriptase Polymerase Chain Reaction; Transforming Growth Factor beta/*physiology; Twist Transcription Factor/*physiology
      12. Abstract :
        TGF-beta promotes epithelial-mesenchymal transition (EMT) and induces clusterin (CLU) expression, linking these genes to cancer metastasis. CLU is a pleiotropic molecular chaperone that confers survival and proliferative advantage to cancer cells. However, the molecular mechanisms by which TGF-beta regulates CLU expression and CLU affects metastasis remain unknown. In this study, we report that the transcription factor Twist1 mediates TGF-beta-induced CLU expression. By binding to E-boxes in the distal promoter region of CLU gene, Twist1 regulated basal and TGF-beta-induced CLU transcription. In addition, CLU reduction reduced TGF-beta induction of the mesenchymal markers, N-cadherin and fibronectin, thereby inhibiting the migratory and invasive properties induced by TGF-beta. Targeted inhibition of CLU also suppressed metastasis in an in vivo model. Taken together, our findings indicate that CLU is an important mediator of TGF-beta-induced EMT, and suggest that CLU suppression may represent a promising therapeutic option for suppressing prostate cancer metastatic progression.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22896337
      14. Call Number :
        PKI @ kd.modi @ 7
      15. Serial :
        10540
      1. Author :
        Ru, P.; Steele, R.; Newhall, P.; Phillips, N. J.; Toth, K.; Ray, R. B.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Mol Cancer Ther
      6. Products :
      7. Volume :
        11
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        PC-3M-luc-C6, PC-3M-luc, IVIS, Bioware, Prostate cancer, Bioluminescence
      12. Abstract :
        Prostate cancer remains the second leading cause of cancer deaths among American men. Early diagnosis increases survival rate in patients; however, treatments for advanced disease are limited to hormone ablation techniques and palliative care. Thus, new methods of treatment are necessary for inhibiting prostate cancer disease progression. Here, we have shown that miRNA-29b (miR-29b) expression was lower in prostate cancer cells (PC3 and LNCaP) as compared with immortalized prostate epithelial cells. Between these two prostate cancer cell lines, metastatic prostate cancer PC3 cells displayed lower expression of miR-29b. We also observed a significant downregulation of miR-29b expression in human prostate cancer tissues as compared with patient-matched nontumor tissues. PC3 cells ectopically expressing miR-29b inhibited wound healing, invasiveness, and failed to colonize in the lungs and liver of severe combined immunodeficient mice after intravenous injection, while PC3 cells expressing a control miRNA displayed metastasis. Epithelial cell marker E-cadherin expression was enhanced miR-29b transfected in prostate cancer cells as compared with cells expressing control miRNA. On the other hand, N-cadherin, Twist, and Snail expression was downregulated in PC3 cells expressing miR-29b. Together these results suggested that miR-29b acts as an antimetastatic miRNA for prostate cancer cells at multiple steps in a metastatic cascade. Therefore, miR-29b could be a potentially new attractive target for therapeutic intervention in prostate cancer.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22402125
      14. Call Number :
        PKI @ kd.modi @ 4
      15. Serial :
        10539
      1. Author :
        Wang, S.; Noberini, R.; Stebbins, J. L.; Das, S.; Zhang, Z.; Wu, B.; Mitra, S.; Billet, S.; Fernandez, A.; Bhowmick, N. A.; Kitada, S.; Pasquale, E. B.; Fisher, P. B.; Pellecchia, M.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2013
      5. Publication :
        Clin Cancer Res
      6. Products :
      7. Volume :
        19
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        PC-3M-luc-C6, PC-3M-luc, IVIS, Bioware, Prostate cancer, Bioluminescence
      12. Abstract :
        PURPOSE: YSA is an EphA2-targeting peptide that effectively delivers anticancer agents to prostate cancer tumors. Here, we report on how we increased the drug-like properties of this delivery system. EXPERIMENTAL DESIGN: By introducing non-natural amino acids, we have designed two new EphA2 targeting peptides: YNH, where norleucine and homoserine replace the two methionine residues of YSA, and dYNH, where a D-tyrosine replaces the L-tyrosine at the first position of the YNH peptide. We describe the details of the synthesis of YNH and dYNH paclitaxel conjugates (YNH-PTX and dYNH-PTX) and their characterization in cells and in vivo. RESULTS: dYNH-PTX showed improved stability in mouse serum and significantly reduced tumor size in a prostate cancer xenograft model and also reduced tumor vasculature in a syngeneic orthotopic allograft mouse model of renal cancer compared with vehicle or paclitaxel treatments. CONCLUSION: This study reveals that targeting EphA2 with dYNH drug conjugates could represent an effective way to deliver anticancer agents to a variety of tumor types. Clin Cancer Res; 19(1); 128-37. (c)2012 AACR.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/23155185
      14. Call Number :
        PKI @ kd.modi @ 6
      15. Serial :
        10541
      1. Author :
        Zuluaga, M. F.; Sekkat, N.; Gabriel, D.; van den Bergh, H.; Lange, N.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Mol Cancer Ther
      6. Products :
      7. Volume :
        N/A
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        PC-3M-luc-C6, PC-3M-luc, IVIS, Bioware, Prostate cancer, Bioluminescence
      12. Abstract :
        Frequent side effects of radical treatment modalities and the availability of novel diagnostics have raised the interest in focal therapies for localized prostate cancer. To improve the selectivity and therapeutic efficacy of such therapies, we developed a minimally invasive procedure, based on a novel polymeric photosensitizer prodrug sensitive to urokinase-like plasminogen activator (uPA). The compound is inactive in its prodrug form and accumulates passively at the tumor site by the enhanced permeability and retention effect. There, the prodrug is selectively converted to its photoactive form by uPA which is over-expressed by prostate cancer cells. Irradiation of the activated photosensitizer exerts a tumor-selective phototoxic effect. The prodrug alone (8 microM) showed no toxic effect on PC-3 cells, but upon irradiation the cell viability was reduced by 90%. In vivo, after systemic administration of the prodrug, PC-3 xenografts became selectively fluorescent. This is indicative of the prodrug accumulation in the tumor and selective local enzymatic activation. Qualitative analysis of the activated compound confirmed that the enzymatic cleavage occurred selectively in the tumor, with only trace amounts in the neighboring skin or muscle. Subsequent photodynamic therapy studies demonstrated complete tumor eradication of animals treated with light (150 J/cm2 at 665 nm) 16 hours after the injection of the prodrug (7.5 mg/kg). These promising results evidence the excellent selectivity of our prodrug with the potential to be used for both, imaging and therapy of localized prostate cancer.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/23270928
      14. Call Number :
        PKI @ kd.modi @ 5
      15. Serial :
        10542
      1. Author :
        Xiao, K.; Li, Y.; Lee, J. S.; Gonik, A. M.; Dong, T.; Fung, G.; Sanchez, E.; Xing, L.; Cheng, H. R.; Luo, J.; Lam, K. S.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Cancer Res
      6. Products :
      7. Volume :
        72
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        SKOV3-luc-D3, SKOV3-luc, IVIS, Ovarian Cancer, Animals; Antineoplastic Agents, Phytogenic/*administration & dosage; Cell Line, Tumor; Drug Carriers/*chemical synthesis/chemistry/therapeutic use; Drug Delivery Systems/*methods; Female; Flow Cytometry; Humans; Integrin alpha Chains/metabolism; Mice; Mice, Nude; Micelles; Microscopy, Confocal; Nanoparticles/chemistry/therapeutic use; Ovarian Neoplasms/*drug therapy; Paclitaxel/*administration & dosage; Peptides/chemical synthesis/therapeutic use; Polyethylene Glycols/chemistry
      12. Abstract :
        Micellar nanoparticles based on linear polyethylene glycol (PEG) block dendritic cholic acids (CA) copolymers (telodendrimers), for the targeted delivery of chemotherapeutic drugs in the treatment of cancers, are reported. The micellar nanoparticles have been decorated with a high-affinity “OA02” peptide against alpha-3 integrin receptor to improve the tumor-targeting specificity which is overexpressed on the surface of ovarian cancer cells. “Click chemistry” was used to conjugate alkyne-containing OA02 peptide to the azide group at the distal terminus of the PEG chain in a representative PEG(5k)-CA(8) telodendrimer (micelle-forming unit). The conjugation of OA02 peptide had negligible influence on the physicochemical properties of PEG(5k)-CA(8) nanoparticles and as hypothesized, OA02 peptide dramatically enhanced the uptake efficiency of PEG(5k)-CA(8) nanoparticles (NP) in SKOV-3 and ES-2 ovarian cancer cells via receptor-mediated endocytosis, but not in alpha-3 integrin-negative K562 leukemia cells. When loaded with paclitaxel, OA02-NPs had significantly higher in vitro cytotoxicity against both SKOV-3 and ES-2 ovarian cancer cells as compared with nontargeted nanoparticles. Furthermore, the in vivo biodistribution study showed OA02 peptide greatly facilitated tumor localization and the intracellular uptake of PEG(5k)-CA(8) nanoparticles into ovarian cancer cells as validated in SKOV3-luc tumor-bearing mice. Finally, paclitaxel (PTX)-loaded OA02-NPs exhibited superior antitumor efficacy and lower systemic toxicity profile in nude mice bearing SKOV-3 tumor xenografts, when compared with equivalent doses of nontargeted PTX-NPs as well as clinical paclitaxel formulation (Taxol). Therefore, OA02-targeted telodendrimers loaded with paclitaxel have great potential as a new therapeutic approach for patients with ovarian cancer.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22396491
      14. Call Number :
        PKI @ kd.modi @ 1
      15. Serial :
        10543
      1. Author :
        Reppert, S.; Boross, I.; Koslowski, M.; Tureci, O.; Koch, S.; Lehr, H. A.; Finotto, S.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2011
      5. Publication :
        Nat Commun
      6. Products :
      7. Volume :
        2
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        LL/2-luc-M38, LL/2-luc, Lewis Lung Carcinoma, IVIS, Adenocarcinoma/drug therapy/genetics/*immunology/metabolism/pathology; Administration, Intranasal; Adult; Aged; Animals; Antibodies, Neutralizing/administration & dosage/*therapeutic use; Antigens, CD/immunology; Female; Forkhead Transcription Factors/genetics/*immunology/metabolism; Gene Expression Regulation, Neoplastic/drug effects/*immunology; Humans; Immunologic Surveillance; Interferon-gamma/biosynthesis/immunology; Interleukin-17/immunology/metabolism; Interleukin-23/immunology/metabolism; Lung/drug effects/*immunology/metabolism/pathology; Lung Neoplasms/drug therapy/genetics/*immunology/metabolism/pathology; Male; Mice; Mice, Inbred C57BL; Mice, Knockout; Middle Aged; T-Box Domain Proteins/deficiency/*genetics/immunology; T-Lymphocytes, Regulatory/immunology
      12. Abstract :
        Lung cancer is the leading cause of cancer deaths worldwide. The cytokine interleukin-17A supports tumour vascularization and growth, however, its role in lung cancer is unknown. Here we show, in the lungs of patients with lung adenocarcinoma, an increase in interleukin-17A that is inversely correlated with the expression of T-bet and correlated with the T regulatory cell transcription factor Foxp3. Local targeting of interleukin-17A in experimental lung adenocarcinoma results in a reduction in tumour load, local expansion of interferon-gamma-producing CD4(+) T cells and a reduction in lung CD4(+)CD25(+)Foxp3(+) regulatory T cells. T-bet((-/-)) mice have a significantly higher tumour load compared with wild-type mice. This is associated with the local upregulation of interleukin-23 and induction of interleukin-17A/interleukin-17R-expressing T cells infiltrating the tumour. Local anti-interleukin-17A antibody treatment partially improves the survival of T-bet((-/-)) mice. These results suggest that local anti-interleukin-17A antibody therapy could be considered for the treatment of lung tumours.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22186896
      14. Call Number :
        PKI @ kd.modi @ 1
      15. Serial :
        10544
      1. Author :
        Rocks, N.; Bekaert, S.; Coia, I.; Paulissen, G.; Gueders, M.; Evrard, B.; Van Heugen, J. C.; Chiap, P.; Foidart, J. M.; Noel, A.; Cataldo, D.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Br J Cancer
      6. Products :
      7. Volume :
        107
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        LL/2-luc-M38, LL/2-luc, Lewis Lung Carcinoma, IVIS
      12. Abstract :
        BACKGROUND: Overall clinical outcome for advanced lung cancer remains very disappointing despite recent advances in treatment. Curcumin has been reported as potentially active against cancer. METHODS: Owing to poor curcumin solubility, we have used cyclodextrins (CD) as an excipient allowing a considerable increase of aqueous solubility and bioavailability of curcumin. The effects of solubilised curcumin have been evaluated in cell cultures as well as in an in vivo orthotopic lung tumour mouse model. RESULTS: Cell proliferation was reduced while apoptosis rates were increased when lung epithelial tumour cells were cultured in the presence of curcumin-CD complexes. For in vivo experiments, cells were grafted into lungs of C57Bl/6 mice treated by an oral administration of a non-soluble form of curcumin, CDs alone or curcumin-CD complexes, combined or not with gemcitabine. The size of orthotopically implanted lung tumours was reduced upon curcumin complex administration as compared with treatments with placebo or non-solubilised curcumin. Moreover, curcumin potentiated the gemcitabine-mediated antitumour effects. CONCLUSION: Our data demonstrate that curcumin, when given orally in a CD-solubilised form, reduces lung tumour size in vivo. In vitro experiments show impaired tumour cell proliferation and increased cell apoptosis. Moreover, our data underline a potential additive effect of curcumin with gemcitabine thus providing an efficient therapeutic option for antilung cancer therapy.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22929882
      14. Call Number :
        PKI @ kd.modi @ 3
      15. Serial :
        10545
      1. Author :
        Wensman, H.; Kamgari, N.; Johansson, A.; Grujic, M.; Calounova, G.; Lundequist, A.; Ronnberg, E.; Pejler, G.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Mol Immunol
      6. Products :
      7. Volume :
        50
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        LL/2-luc-M38, LL/2-luc, Lewis Lung Carcinoma, IVIS, Animals; Antigens, CD137/genetics/*immunology; Carcinoma, Lewis Lung/genetics/*immunology/metabolism; Gene Expression Profiling; Gene Expression Regulation, Neoplastic/genetics/*immunology; Humans; Immunohistochemistry; Mast Cells/*immunology/metabolism; Oligonucleotide Array Sequence Analysis; Real-Time Polymerase Chain Reaction; Reverse Transcriptase Polymerase Chain Reaction; Up-Regulation
      12. Abstract :
        Mast cells (MCs) can have either detrimental or beneficial effects on malignant processes but the underlying mechanisms are poorly understood. Here we addressed this issue by examining the interaction between Lewis Lung Carcinoma (LLC) cells and MCs. In vivo, LLC tumors caused a profound accumulation of MCs, suggesting that LLC tumors have the capacity to attract MCs. Indeed, transwell migration assays showed that LLC-conditioned medium had chemotactic activity towards MCs, which was blocked by an antibody towards stem cell factor. In order to gain insight into the molecular mechanisms operative in tumor-MC interactions, the effect of LLC on the MC gene expression pattern was examined. As judged by gene array analysis, conditioned medium from LLC cells caused significant upregulation of numerous cell surface receptors and a pro-angiogenic Runx2/VEGF/Dusp5 axis in MCs, the latter in line with a role for MCs in promoting tumor angiogenesis. Among the genes showing the highest extent of upregulation was Tnfrsf9, encoding the anti-tumorigenic protein 4-1BB, suggesting that also anti-tumorigenic factors are induced. Quantitative RT-PCR analysis showed that 4-1BB was upregulated in a transient manner, and it was also shown that tumor cells induce 4-1BB in human MCs. Immunohistochemical analysis showed that LLC-conditioned medium induced 4-1BB also at the protein level. Together, this study provides novel insight into the molecular events associated with MC-tumor interactions and suggests that tumor cells induce both pro- and anti-tumorigenic responses in MCs.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22343053
      14. Call Number :
        PKI @ kd.modi @ 2
      15. Serial :
        10546
      1. Author :
        Gule, N. P.; de Kwaadsteniet, M.; Cloete, T. E.; Klumperman, B.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Water Res
      6. Products :
      7. Volume :
        N/A
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        Xen5, Xen39, Xen26, Xen14, Xen36, Xen 5, Xen 39, Xen 26, Xen 14, Xen 36, Psuedomonas aeruginosa, S. aureus, Klebsiella, E. coli, Salmonella,
      12. Abstract :
        The 3(2H) furanone derivative 2,5-dimethyl-4-hydroxy-3(2H)-furanone (DMHF) was investigated for its antimicrobial and cell-adhesion inhibition properties against Klebsiella pneumoniae Xen 39, Staphylococcus aureus Xen 36, Escherichia coli Xen 14, Pseudomonas aeruginosa Xen 5 and Salmonella typhimurium Xen 26. Nanofibers electrospun from solution blends of DMHF and poly(vinyl alcohol) (PVA) were tested for their ability to inhibit surface-attachment of bacteria. Antimicrobial and adhesion inhibition activity was determined via the plate counting technique. To quantify viable but non-culturable cells and to validate the plate counting results, bioluminescence and fluorescence studies were carried out. Nanofiber production was upscaled using the bubble electrospinning technique. To ascertain that no DMHF leached into filtered water, samples of water filtered through the nanofibrous mats were analyzed using gas chromatography coupled with mass spectrometry (GC-MS). Scanning electron microscopy (SEM) and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) were used to characterize the electrospun nanofibers.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/23261340
      14. Call Number :
        PKI @ kd.modi @ 7
      15. Serial :
        10548
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