Search Results
Results 501 - 550 of 2035
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Mori Noriko - - 2007
Identifying strategies to increase cancer cell kill while sparing normal tissue is critically important in cancer chemotherapy. Choline kinase (Chk), the enzyme that converts choline to phosphocholine (PC), is elevated in cancer cells and presents a novel target for increasing cell kill. Here, we have examined the effects of transiently ...
Samandari Elika - - 2007
The human adrenal cortex produces mineralocorticoids, glucocorticoids, and androgens in a species-specific, hormonally regulated, zone-specific, and developmentally characteristic fashion. Most molecular studies of adrenal steroidogenesis use human adrenocortical NCI-H295A and NCI-H295R cells as a model because appropriate animal models do not exist. NCI-H295A and NCI-H295R cells originate from the same ...
Mimeault Murielle - - 2007
The results of the present study revealed for the first time the possibility to use a combination of mitoxantrone with gefitinib and cyclopamine for inhibiting the growth of epidermal growth factor (EGF), sonic hedgehog- (SHHNp), and serum-stimulated androgen-sensitive LNCaP-C33 and androgen-independent (AI) LNCaP-C81, DU145 and PC3 prostate cancer (PC) cells. ...
Leiblich Aaron A Section of Oncology, Academic Urology Unit, University of Sheffield, Royal Hallamshire Hospital, Sheffield, - - 2007
A proportion of men with prostate cancer will progress to develop metastatic disease involving the lymph-nodes and bone. To identify novel candidates associated with metastatic progression, we compared the proteomic profiles of LNCaP (lymph-node metastatic, androgen-dependant) and PC-3 (bone metastatic, androgen-independent), human prostate cancer cells. Two-dimensional polyacrylamide gel electrophoresis (2D-PAGE), ...
Baker Matthew J MJ Manchester Interdisciplinary Biocentre, Centre for Instrumentation and Analytical Science, School of Chemical Engineering and Analytical Science, The University of Manchester, UK. - - 2008
This communication utilises Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) combined with multivariate analysis to obtain spectra from the surfaces of three closely related cell lines allowing their discrimination based upon mass spectral ions.
Granell Susana - - 2008
A variant alpha1-antitrypsin with E342K mutation has a high tendency to form intracellular polymers, and it is associated with liver disease. In the hepatocytes of individuals carrying the mutation, alpha1-antitrypsin localizes both to the endoplasmic reticulum (ER) and to membrane-surrounded inclusion bodies (IBs). It is unclear whether the IBs contribute ...
Lao Bert J - - 2008
Experimental patterns of epithelial cell proliferation in the prostate suggest that cell movement may play an important role in prostate epithelial homeostasis, and genes known to regulate cell movement are commonly mutated or deleted in prostate carcinomas. However, the nature of cell movement within the prostate epithelium remains unknown. Here, ...
Laplante Yannick - - 2008
As a therapeutic approach for the treatment of androgen-sensitive diseases, it would be tempting to lower the level of the potent androgens testosterone (T) and dihydrotestosterone (DHT) by using inhibitors of type 3 and type 5 17beta-hydroxysteroid dehydrogenases (17beta-HSDs). However, the efficiency of such a strategy will be optimal only ...
Moretti Roberta M - - 2007
Besides a fully processed, secreted form of clusterin (sCLU), an alternative proapoptotic form of the protein targeting the nucleus (nCLU) was recently described. The possible differential roles played by the two clusterin forms in growth and motility of nonmalignant and malignant prostate cells are investigated here. sCLU or nCLU was ...
Kim Myoung H - - 2007
BACKGROUND: One of the green tea components epigallocatechin-3-gallate (EGCG) significantly prevented the growth of prostate cancer cells. In this study, synergistic effect of EGCG and ibuprofen (EGCG+ibuprofen) was investigated to determine their anti-proliferative and pro-apoptotic action in DU-145 prostate cancer cells. MATERIALS AND METHODS: Cell death analysis, immunoblotting, RT-PCR analysis, ...
Hu Y - - 2007
Ethanolic extracts of four Chinese medicinally used Vitex species were selected and tested for their estrogen-like activities, using an ERalpha-positive MCF-7 cell based proliferation assay (E-screen assay) and cell cycle analysis (flow cytometry). Vitex negundo displayed the highest estrogenic-like activity, and could be useful in hormone replacement therapy (HRT).
Wang Xingya - - 2007
Prostaglandin E2 (PGE2) has been shown to induce expression of vascular endothelial growth factor (VEGF) and other signaling molecules in several cancers. PGE2 elicits its functions though four G-protein coupled membrane receptors (EP1-4). In this study, we investigated the role of EP receptors in PGE2-induced molecular events in prostate cancer ...
Chatzinikolaou G - - 2007
The soy isoflavone genistein can affect cell metabolism by specifically inhibiting protein tyrosine kinase (PTK) and/or interacting with the estrogen receptors (ERs). Glycosaminoglycans (GAG)/proteoglycans (PG) may participate in tumor development and progression. The synthesis of GAG by two human colon cancer cell lines, HT-29 and SW-1116, and the effects of ...
Sahni A - - 2008
BACKGROUND: Fibroblast growth factor (FGF)-2 is a critical growth factor in normal and malignant cell proliferation and tumor-associated angiogenesis. Fibrinogen and fibrin bind to FGF-2 and modulate FGF-2 functions. Furthermore, we have shown that extrahepatic epithelial cells are capable of endogenous production of fibrinogen. OBJECTIVE: Herein we examined the role ...
Fasullo, Michael T.
We tested the hypothesis that hypoxic breast cancer cells would be more permissive to herpes simplex (HSV-1)-derived plasmids. Since hypoxic cells are more resistant to traditional therapies this work could provide a new strategy for treating aggressive breast cancer. The general hypothesis was that ERK (extracellular receptor kinase) would be ...
Schraufstatter, Ingrid
The chemokine receptor CXCR4 is functionally expressed on the cell surface of various cancer cells, and plays a role in cell proliferation and migration of these cells. Specifically, in breast cancer cells the CXCR4/CXCL12 axis has been implicated in cell migration in vitro and in metastasis in vivo, but the ...
Koda Tomoko - - 2007
Bisphenol A (BPA) is used in the production of polycarbonate and epoxy resins. The weak estrogenic activity of BPA has been confirmed by both in vitro and in vivo assays. Retinal acetate has been reported to inhibit the adverse effects of BPA on male mice reproduction. All-trans-retinoic acid (ATRA) is ...
Shi Xudong - - 2007
Freshly isolated mouse prostate epithelial cells regenerate fully differentiated prostate tissue when combined with embryonic urogenital sinus mesenchyme and grafted in vivo. We show here that this regenerative capacity, which has been attributed to a small population of pleuripotential progenitor epithelial cells, is rapidly lost when the cells are placed ...
Cook Crist - - 2007
Mesenchymal expression of the BMP antagonist NOGGIN during prostate development plays a critical role in pre-natal ventral prostate development and opposes BMP4-mediated inhibition of cell proliferation during postnatal ductal development. Morphologic examination of newborn Noggin-/- male fetuses revealed genitourinary anomalies including cryptorchidism, incomplete separation of the hindgut from the urogenital ...
Lapouge Gaëlle - - 2007
The emergence of mutations in the androgen receptor (AR) gene is a recurrent event during progression of prostate cancer (PCa) on androgen ablation therapy. In this study, we show that nonsense mutations that lead to carboxyl-terminal end truncated ARs are found at high frequency in metastatic PCas. Transcriptional activities of ...
Prasad Sahdeo - - 2007
Cancer of the prostate gland (PCA) is the most common invasive malignancy and is the second leading cause of cancer-related death in males. The polyphenolic constituents of black tea have gained considerable attention as chemopreventive agents. Many studies have shown that black tea reduces the risk of several cancer types. ...
Brown Mick D MD ProMPT Genito-Urinary Cancer Research Group, Paterson Institute for Cancer Research, University of Manchester, Manchester, UK. - - 2007
The prostate epithelial stem cell has been proposed as the primary origin of neoplastic change in prostate cancer. However, the isolation and characterization of unexpanded prostate epithelial stem cells have proven problematic. A prostate epithelial side population (SP) has been isolated utilizing a modified Hoechst 33342 dye efflux assay from ...
Malíková Jana - - 2008
Brassinosteroids (BRs) are steroid plant hormones that are essential for many plant growth and developmental processes, including cell expansion, vascular differentiation and stress responses. Up to now the inhibitory effects of BRs on cell division of mammalian cells are unknown. To determine basic anticancer structure-activity relationships of natural BRs on ...
Chouinard Sarah - - 2007
Uridine diphosphate-glucuronosyltransferase 2 (UGT2)B15 and B17 enzymes conjugate dihydrotestosterone (DHT) and its metabolites androstane-3alpha, 17beta-diol (3alpha-DIOL) and androsterone (ADT). The presence of UGT2B15/B17 in the epithelial cells of the human prostate has been clearly demonstrated, and significant 3alpha-DIOL glucuronide and ADT-glucuronide concentrations have been detected in this tissue. The human ...
He Dongning - - 2007
BACKGROUND: Sulfation is an important steroid inactivation in human tissues. Sulfotransferase (SULT) 2B1b selectively conjugates 3beta-hydroxysteroids and is expressed in epithelial cells of normal and cancerous prostate tissues. Dehydroepiandrosterone (DHEA) and Delta(5)-androstenediol (Delta(5)-Adiol) sulfation prevents their conversion to more potent androgens and estrogens in tissues although both compounds may also ...
Endsley Michael P - - 2007
Endogenous 2-arachidonoylglycerol (2-AG) is antiinvasive in androgen-independent prostate carcinoma (PC-3) cells. Invasion of PC-3 cells is also inhibited by exogenously added noladin ether, a non-hydrolyzable analog of 2-AG. In contrast, exogenous 2-AG has the opposite effect. Cell invasion significantly increased with high concentrations of exogenous 2-AG. In PC-3 cells, arachidonic ...
Yuan Ta-Chun - - 2007
Neuroendocrine (NE) cells represent a minor cell population in the epithelial compartment of normal prostate glands and may play a role in regulating the growth and differentiation of normal prostate epithelia. In prostate tumor lesions, the population of NE-like cells, i.e., cells exhibiting NE phenotypes and expressing NE markers, is ...
Horvath Zsuzsanna - - 2007
Resveratrol (RV), a naturally occurring phytoalexin, exerts manifold biological effects against a variety of human tumor cell lines. In this study, the cytotoxic and biological effects of novel RV derivatives were investigated in prostate cancer cells. Cytotoxicity of the compounds was assessed by clonogenic assays in PC-3, LNCaP and DU-145 ...
Sun Yulan - - 2007
Parthenolide has been shown to have anti-inflammatory and antitumor properties. However, whether and how parthenolide enhances tumor sensitivity to radiation therapy are unknown. In this study, we show that inhibition of the nuclear factor-kappaB (NF-kappaB) pathway is a common mechanism for the radiosensitization effect of parthenolide in prostate cancer cells ...
Cesari, Whitney
The presence of estrogen receptor α (ER-α) in breast tumors predicts the patient response to hormone therapy. The most common treatments are the antiestrogens 4- hydroxy tamoxifen (Tam) and fulvestrant (ICI 182,780). While Tam exhibits partial agonistic activities, ICI is a total antagonist. Most patients eventually develop resistance to antiestrogens. ...
Garbens, Alaina
Numerous cancer cells lines have up-regulated fatty acid biosynthesis compared to healthy cells. This up-regulation of fatty acid synthesis has been proposed to assist rapidly dividing cancer cells by providing new phospholipids for membranes and possibly aiding in maintaining redox balance within the cell. Furthermore, many cancer cells lines display ...
Zhao Ming - - 2008
The chemokine receptor CXCR4 is functionally expressed on the cell surface of various cancer cells, and plays a role in cell proliferation and migration of these cells. Specifically, in breast cancer cells the CXCR4/CXCL12 axis has been implicated in cell migration in vitro and in metastasis in vivo, but the ...
Panchapakesan, Balaji
In this project, we have demonstrated multi-component molecular targeting of surface receptors (IGF1R and Her2) and NIR dosing of cancer cells using SWCNT. While previous studies have shown the transport of DNA into cells using nanotubes, in this study we show multicomponent molecular targeting of both IGF1R and Her2 surface ...
Singh Shivendra V - - 2007
Guggulsterone, a constituent of Indian Ayurvedic medicinal plant Commiphora mukul, causes apoptosis in cancer cells but the sequence of events leading to cell death is poorly understood. We now show that guggulsterone-induced cell death in human prostate cancer cells is caused by reactive oxygen intermediate (ROI)-dependent activation of c-Jun NH(2)-terminal ...
Mitterberger Michael - - 2007
BACKGROUND: Following prolonged treatment with the non-steroidal anti-androgen bicalutamide (Casodex), LNCaP cells have become resistant to this drug. Previously, we found that the bicalutamide-refractory subline LNCaP-Bic acquires a growth advantage and does not respond to androgenic stimulation. In the present study, we have asked whether changes in response to the ...
Stern Joshua M - - 2007
BACKGROUND AND PURPOSE: Nanoshells (NS) are nanoparticles consisting of a dielectric silica core covered by a thin gold shell. Nanoshells can be designed to absorb near-infrared (NIR) light strongly to generate heat and provide optically guided hyperthermic ablation. Laser-activated gold nanoshells (LAGN) may offer a minimally invasive targeted ablative treatment ...
Zhang Elizabeth Jingnan - - 2007
Soybean isoflavones have multiple beneficial health effects especially on estrogen-deficient diseases such as menopausal symptoms. In this study, isoflavones were produced from soybean flour, and the extraction and purification parameters were optimized to give a high yield of total isoflavones, about 0.62 mg of aglycones/g of soybean flour, which is ...
Ye Lin - - 2007
PURPOSE: We investigated the effect of manipulating endogenous BMP-7 expression on the invasion and motility of prostate cancer cells and the resulting effect on its antagonists using a ribozyme transgene. MATERIALS AND METHODS: A hammerhead ribozyme transgene was synthesized and cloned into a mammalian expression vector (pcDNA3.1/nt-GFP-TOPO). PC-3 cells (American ...
Junghans, Richard P.
Anti-PSMA designer T cells Autologous T cells that are gene-modified to express chimeric immunoglobulin T cell receptors (TgTCR) that recognize the prostate specific membrane antigen. We will conduct Phase I dose-escalation trial with infusion of designer T cells into prostate cancer patients after non-myeloablative (NMA) conditioning. This procedure will allow ...
Valenzuela Hector F - - 2007
Resistance to apoptosis is a critical feature of neoplastic cells. Galectin-1 is an endogenous carbohydrate-binding protein that induces death of leukemia and lymphoma cells, breast cancer cells, and the LNCaP prostate cancer cell line, but not other prostate cancer cell lines. To understand the mechanism of galectin-1 sensitivity of LNCaP ...
Shabbeer Shabana - - 2007
BACKGROUND: Valproic acid (VPA), is a drug approved by the FDA for epilepsy and bipolar disorders. It is a known Histone Deacetylase Inhibitor (HDACI). We tested VPA, for its anti-proliferative activity in prostate cancer (PCa) cell lines in vitro and in vivo. METHODS: DU-145 and PC-3 PCa cell lines were ...
Shaheduzzaman Syed - - 2007
BACKGROUND: Cancer cells gain selection advantages by the coordinated silencing of protective and by the activation of cell proliferation/cell survival genes. Evaluations of epithelial cell transcriptome of benign and malignant prostate glands by laser capture microdissection (LCM) identified Lactotransferrin (LTF) as the most significantly downregulated gene in prostate cancer (CaP) ...
Fischer D - - 2007
It is known that 25(OH)D3 can be metabolized to 1,25(OH)2 D3 by 1alpha-OHase in breast tissue. This tissue-specific expression of 1alpha-OHase may act as the pivotal link between vitamin D status (25(OH)D3 levels) and the anticancer effects of 1,25(OH)2 D3. Alternative splicing frequently occurs in breast cancer cells; different splice ...
Merlet Jorge - - 2007
During mammalian development, androgens produced by the fetal testis are the most important hormones controlling the masculinization of the reproductive tract and the genitalia. New findings show that the male germ line is the most sensitive to anti-androgenic endocrine disruptors during the embryonic period. In a recent study, we reported ...
Rigas A C AC Northern Institute for Cancer Research, Newcastle University, Framlington Place, Newcastle upon Tyne, - - 2007
Antiandrogens are initially effective in controlling prostate cancer (CaP), the second most common cancer in men, but resistance, associated with the loss of androgen-regulated cell cycle control, is a major problem. At present there is no effective treatment for androgen-independent prostate cancer (AIPC). Cellular proliferation is driven by cyclin-dependent kinases ...
Urushino Naoko N Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Oiwake-cho, Sakyo-ku, Kyoto, - - 2007
Our previous study demonstrated that 25-hydroxy-19-nor-vitamin D(3) [25(OH)-19-nor-D(3)] inhibited the proliferation of immortalized noncancerous PZ-HPV-7 prostate cells similar to 1 alpha,25-dihydroxyvitamin D(3) [1 alpha,25(OH)(2)D(3)], suggesting that 25(OH)-19-nor-D(3) might be converted to 1 alpha,25-dihydroxy-19-nor-vitamin D(3) [1 alpha,25(OH)(2)-19-nor-D(3)] by CYP27B1 before exerting its antiproliferative activity. Using an in vitro cell-free model to ...
Stute Petra - - 2008
Breast tissue possesses the enzymes for local estrogen biosynthesis. We measured the effect of Estradiol (E2), Tibolone (OrgOD14) and its metabolite Org4094 on estrone sulfate (E1S)-sulfatase (STS) using breast cancer (MCF-7) and non-malignant breast cells (HBL-100). Cells were cultured in 5% steroid depleted fetal calf serum for 3 days and ...
Peehl, Donna M.
Our objective was to explore the hypothesis that prostate cancer-associated stromal cells are derived, at least in part, from mesenchymal stem cells. Our objective was to show that cancer-derived stromal cells capable of anchorage-independent growth have characteristics of stem cells and convert nontumorigenic prostatic epithelial cells to tumorigenicity. We could ...
Wu Mingfu - - 2007
To better understand the molecular mechanisms of prostate cancer (PCA) dissemination and to develop new anti-metastasis therapies, key regulatory molecules involved in PCA metastasis were identified in two human androgen-independent PCA cell lines, highly metastatic 1E8-H and lowly metastatic 2B4-L cells. Through 2-DE and MS analyses, 12 proteins with different ...
Morrissey Colm - - 2007
AIM: A number of epidemiological studies have suggested that consumption of green tea reduces the risk of prostate cancer. The aim of this study was to elucidate the effects of epigallocatechin-3-gallate (EGCG), one of the major constituents of green tea, on growth inhibition and apoptosis in prostate epithelial cell lines ...
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