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https://www.readbyqxmd.com/read/29792952/anticancer-mechanism-of-sinapic-acid-in-pc-3-and-lncap-human-prostate-cancer-cell-lines
#1
Canan Eroğlu, Ebru Avcı, Hasibe Vural, Ercan Kurar
Sinapic acid (SA) is a derivative of hydroxycinnamic acid and found in various vegetables and fruit species. Aim was to evaluate the anticancer effects of SA in PC-3 and LNCaP human prostate cancer cells. The effect of SA on cell viability was determined using XTT assay. Expressions of 8 genes for apoptosis and 6 genes for metastasis were evaluated by qPCR. Caspase-3 activity was determined using caspase-3 colorimetric assay kit. Effect of SA on cell invasion was evaluated with cell invasion assay. The IC50 dose of SA in PC-3 and LNCaP cells was found to be 1000 μM for 72 h...
May 21, 2018: Gene
https://www.readbyqxmd.com/read/29790741/entrapment-of-prostate-cancer-circulating-tumor-cells-with-a-sequential-size-based-microfluidic-chip
#2
Xiang Ren, Brittni Foster, Parham Ghassemi, Jeannine S Strobl, Bethany A Kerr, Masoud Agah
Circulating tumor cells (CTCs) are broadly accepted as an indicator for early cancer diagnosis and disease severity. However, there is currently no reliable method available to capture and enumerate all CTCs as most systems require either an initial CTC isolation or antibody-based capture for CTC enumeration. Many size-based CTC detection and isolation microfluidic platforms were presented in the past few years. Here we describe a new size-based, multiple-row cancer cell entrapment device that captured LNCaP-C4-2 prostate cancer cells with >95% efficiency when in spiked mouse whole blood at ~50 cells/mL...
May 23, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29785122/aloperine-executes-antitumor-effects-through-the-induction-of-apoptosis-and-cell-cycle-arrest-in-prostate-cancer-in-vitro-and-in-vivo
#3
Zhixin Ling, Han Guan, Zonghao You, Can Wang, Ling Hu, Lei Zhang, Yiduo Wang, Shuqiu Chen, Bin Xu, Ming Chen
Background: Prostate cancer (PCa) is one of the most common malignant diseases among male patients. Although androgen deprivation therapy remains the main treatment for PCa, most patients would inevitably progress to castration-resistant PCa, which is the main cause of cancer-related deaths. Thus, novel antitumor agents are urgently needed. Recent studies demonstrated that aloperine (ALO) as a natural alkaloid showed antitumor effects in other cancer types. However, the biological function and underlying mechanisms of ALO in PCa have not been investigated...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29783631/melatonin-analogue-antiproliferative-and-cytotoxic-effects-on-human-prostate-cancer-cells
#4
Angela Calastretti, Giuliana Gatti, Valeria Lucini, Silvana Dugnani, Gianfranco Canti, Francesco Scaglione, Annamaria Bevilacqua
Melatonin has been indicated as a possible oncostatic agent in different types of cancer, its antiproliferative role being demonstrated in several in vitro and in vivo experimental models of tumors. Specifically, melatonin was proven to inhibit cell growth of both androgen-dependent and independent prostate cancer cells, through various mechanisms. A number of melatonin derivatives have been developed and tested for their role in the prevention and treatment of neoplastic diseases. We recently proved the in vitro and in vivo anticancer activity of UCM 1037, a newly-synthetized melatonin analogue, on melanoma and breast cancer cells...
May 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29779975/design-and-synthesis-of-a-series-of-bioavailable-fatty-acid-synthase-fasn-kr-domain-inhibitors-for-cancer-therapy
#5
Tianbao Lu, Carsten Schubert, Maxwell D Cummings, Gilles Bignan, Peter J Connolly, Karine Smans, Donald Ludovici, Michael H Parker, Christophe Meyer, Christian Rocaboy, Richard Alexander, Bruce Grasberger, Sabine De Breucker, Norbert Esser, Erwin Fraiponts, Ron Gilissen, Boudewijn Janssens, Danielle Peeters, Luc Van Nuffel, Peter Vermeulen, James Bischoff, Lieven Meerpoel
We designed and synthesized a new series of fatty acid synthase (FASN) inhibitors with potential utility for the treatment of cancer. Extensive SAR studies led to highly active FASN inhibitors with good cellular activity and oral bioavailability, exemplified by compound 34. Compound 34 is a potent inhibitor of human FASN (IC50  = 28 nM) that effectively inhibits proliferation of A2780 ovarian cells (IC50  = 13 nM) in lipid-reduced serum (LRS). This cellular activity can be rescued by addition of palmitate, consistent with an on-target effect...
May 8, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29779108/microrna-dependent-regulation-of-igf1r-gene-expression-in-hormone-sensitive-and-hormone-resistant-prostate-cancer-cells
#6
V A Tarasov, M G Tyutyakina, M A Makhotkin, E F Shin, A V Naboka, A N Mashkarina, D A Chebotarev, E N Cherkasova, M I Kogan, M B Chibichyan, D G Matishov
Using multiple parallel sequencing on Illumina platform, we identified eight microRNAs that showed significant opposite changes of gene expression in cells of the hormone-sensitive LNCaP prostate cancer cell line and in cells of the hormone-resistant DU-145 cell line, in comparison to the microRNA expression in the normal prostate tissue cells. We found that the insulin-like growth factor 1 receptor (IGF1R) gene is a target of five microRNAs whose expression is increased in LNCaP cells and reduced in DU-145 cells...
March 2018: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29775868/cytotoxic-and-other-withanolides-from-aeroponically-grown-physalis-philadelphica
#7
Ya-Ming Xu, E M Kithsiri Wijeratne, Alan D Brooks, Poonam Tewary, Li-Jiang Xuan, Wen-Qiong Wang, Thomas J Sayers, A A Leslie Gunatilaka
Eleven withanolides including six previously undescribed compounds, 16β-hydroxyixocarpanolide, 24,25-dihydroexodeconolide C, 16,17-dehydro-24-epi-dioscorolide A, 17-epi-philadelphicalactone A, 16-deoxyphiladelphicalactone C, and 4-deoxyixocarpalactone A were isolated from aeroponically grown Physalis philadelphica. Structures of these withanolides were elucidated by the analysis of their spectroscopic (HRMS, 1D and 2D NMR, ECD) data and comparison with published data for related withanolides. Cytotoxic activity of all isolated compounds was evaluated against a panel of five human tumor cell lines (LNCaP, ACHN, UO-31, M14 and SK-MEL-28), and normal (HFF) cells...
May 15, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29773107/-over-expression-of-mir-151a-3p-inhibits-proliferation-and-migration-of-pc-3-prostate-cancer-cells
#8
Yi Zhang, Tongtong Hao, Han Zhang, Pengtao Wei, Xiaohui Li
Objective To observe the effect of microRNA-151a-3p (miR-151a-3p) up-regulation on the proliferation and migration of prostate cancer cells and explore the possible molecular mechanism. Methods The expression of miR-151a-3p in PC-3M, C4-2B, 22RV1, DU-145, PC-3, LNCap human prostate cancer cells and RWPE-1 human normal prostate epithelial cells was detected by real-time fluorescence quantitative PCR. PC-3 cells with the lowest expression of miR-151a-3p were used for subsequent experiments. Bioinformatics and dual-luciferase reporter assay were performed to predict and test potential target genes of miR-151a-3p...
March 2018: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/29772510/dkk1-and-kremen-expression-predicts-the-osteoblastic-response-to-bone-metastasis
#9
Katrina L Clines, Gregory A Clines
Bone metastasis is a complication of advanced breast and prostate cancer. Tumor-secreted Dickkopf homolog 1 (DKK1), an inhibitor of canonical Wnt signaling and osteoblast differentiation, was proposed to regulate the osteoblastic response to metastatic cancer in bone. The objectives of this study were to compare DKK1 expression with the in vivo osteoblastic response in a panel of breast and prostate cancer cell lines, and to discover mechanisms that regulate cancer DKK1 expression. DKK1 expression was highest in MDA-MB-231 and PC3 cells that produce osteolytic lesions, and hence a suppressed osteoblastic response, in animal models of bone metastasis...
May 14, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29767253/-corrigendum-inhibitory-activity-of-apogossypol-in-human-prostate-cancer-in-vitro-and-in-vivo
#10
Wenhua Zhan, Xingbin Hu, Jing Yi, Qunxing An, Xiaofeng Huang
An interested reader drew to the attention of the Editorial Board of Molecular Medicine Reports that certain data featured in the above paper had been published in 2014 in the same journal, in an article featuring several of the same authors [Zhang X, Hu X, Mu S, Zhan Y, An Q, Liu Z and Huang X: "Apogossypolone inhibits the proliferation of LNCaP cells in vitro and in vivo", Mol Med Rep 10: 1184‑1194, 2014]. Specifically, data in Fig. 2A of the above paper (the Apogossypol, 15 µmol/l data panel) had appeared in Fig...
February 13, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29767250/diosmetin-suppresses-human-prostate-cancer-cell-proliferation-through-the-induction-of-apoptosis-and-cell-cycle-arrest
#11
Christine Oak, Ahmad O Khalifa, Ilaha Isali, Natarajan Bhaskaran, Ethan Walker, Sanjeev Shukla
Diosmetin, a plant flavonoid, has been shown to exert promising effects on prostate cancer cells as an anti‑proliferative and anticancer agent. In this study, using western blot analysis for protein expression and flow cytometry for cell cycle analysis, we determined that the treatment of the LNCaP and PC‑3 prostate cancer cells with diosmetin resulted in a marked decrease in cyclin D1, Cdk2 and Cdk4 expression levels (these proteins remain active in the G0‑G1 phases of the cell cycle). These changes were accompanied by a decrease in c-Myc and Bcl-2 expression, and by an increase in Bax, p27Kip1 and FOXO3a protein expression, which suggests the potential modulatory effects of diosmetin on protein transcription...
May 16, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29761841/prkar2b-promotes-prostate-cancer-metastasis-by-activating-wnt-%C3%AE-catenin-and-inducing-epithelial-mesenchymal-transition
#12
Jianjun Sha, Qing Han, Chenfei Chi, Yinjie Zhu, Jiahua Pan, Baijun Dong, Yiran Huang, Weiliang Xia, Wei Xue
Castration-resistant prostate cancers (CRPC) that occur after the failure of androgen-blocking therapies cause most of the deaths in prostate cancer (PCa) patients. In a previous study we identified that PRKAR2B expression is upregulated in CRPC and possesses potentials to develop CRPC. Here we further investigated the underlying mechanism of PRKAR2B in regulating prostate cancer metastasis. We established an androgen-independent LNCaPcell line (LNCaP-AI), and investigated the function of PRKAR2B on regulating cell invasion in vitro and in vivo...
May 15, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29760584/lsd1-inhibition-attenuates-androgen-receptor-v7-splice-variant-activation-in-castration-resistant-prostate-cancer-models
#13
Sergio Regufe da Mota, Sarah Bailey, Rosemary A Strivens, Annette L Hayden, Leon R Douglas, Patrick J Duriez, M Teresa Borrello, Hanae Benelkebir, A Ganesan, Graham Packham, Simon J Crabb
Background: Castrate resistant prostate cancer (CRPC) is often driven by constitutively active forms of the androgen receptor such as the V7 splice variant (AR-V7) and commonly becomes resistant to established hormonal therapy strategies such as enzalutamide as a result. The lysine demethylase LSD1 is a co-activator of the wild type androgen receptor and a potential therapeutic target in hormone sensitive prostate cancer. We evaluated whether LSD1 could also be therapeutically targeted in CRPC models driven by AR-V7...
2018: Cancer Cell International
https://www.readbyqxmd.com/read/29755968/exploring-the-interaction-mechanism-between-cyclopeptide-dc3-and-androgen-receptor-using-molecular-dynamics-simulations-and-free-energy-calculations
#14
Huimin Zhang, Tianqing Song, Yizhao Yang, Chenggong Fu, Jiazhong Li
Androgen receptor (AR) is a key target in the discovery of anti-PCa (Prostate Cancer) drugs. Recently, a novel cyclopeptide Diffusa Cyclotide-3 (DC3), isolated from Hedyotisdiffusa , has been experimentally demonstrated to inhibit the survival and growth of LNCap cells, which typically express T877A-mutated AR, the most frequently detected point mutation of AR in castration-resistant prostate cancer (CRPC). But the interaction mechanism between DC3 and AR is not clear. Here in this study we aim to explore the possible binding mode of DC3 to T877A-mutated AR from molecular perspective...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29751044/transcriptional-repressor-kaiso-promotes-epithelial-to-mesenchymal-transition-and-metastasis-in-prostate-cancer-through-direct-regulation-of-mir-200c
#15
Abisola Abisoye-Ogunniyan, Huxian Lin, Anghesom Ghebremedhin, Ahmad Salam, Balasubramanyam Karanam, Shaniece Theodore, Jacqueline Jones-Trich, Melissa Davis, William Grizzle, Honghe Wang, Clayton Yates
The loss of miR-200 family, through DNA methylation, results in cancer cells undergoing an epithelial to mesenchymal transition (EMT), and metastasis. In this study, we established that the transcriptional repressor Kaiso directly binds methylated regions of the miR-200 family, and this is reversed with 5-aza treatment. sh-Kaiso PC-3 cells display increased miR-200-a/b/c, miR-141, and miR-429 expression, with miR-200c demonstrating the most significant increase. Interestingly, overexpression of EGFR or treatment with EGF decreases miR-200c expression and this is reversed after treatment with EGFR specific kinase inhibitor PD153035...
May 8, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29749248/antiproliferative-and-antiapoptotic-effect-of-thymoquinone-on-cancer-cells-in-vitro
#16
G Kus, M Ozkurt, S Kabadere, N Erkasap, G Goger, F Demirci
OBJECTIVES: Nigella sativa oil and thymoquinone were comparatively tested in vitro for their effects on human cancer cell lines (glioma,T98; prostate, LnCaP) as well as mouse embryonic fibroblast cell lines (3T3), and for the induction of apoptosis. METHODS: Individual cell lines were treated with thymoquinone and N. sativa oil for 24 and 48 hr. Survival rate with MTT, apoptosis with flow cytometry and caspase-9 mRNA enzyme levels with RT-PCR were determined in vitro...
2018: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29748961/growth-hormone-releasing-hormone-receptor-antagonists-modify-molecular-machinery-in-the-progression-of-prostate-cancer
#17
Laura Muñoz-Moreno, Andrew V Schally, Juan C Prieto, M José Carmena, Ana M Bajo
BACKGROUND: Therapeutic strategies should be designed to transform aggressive prostate cancer phenotypes to a chronic situation. To evaluate the effects of the new growth hormone-releasing hormone receptor (GHRH-R) antagonists: MIA-602, MIA-606, and MIA-690 on processes associated with cancer progression as cell proliferation, adhesion, migration, and angiogenesis. METHODS: We used three human prostate cell lines (RWPE-1, LNCaP, and PC3). We analyzed several molecules such as E-cadherin, β-catenin, Bcl2, Bax, p53, MMP2, MMP9, PCNA, and VEGF and signaling mechanisms that are involved on effects exerted by GHRH-R antagonists...
May 10, 2018: Prostate
https://www.readbyqxmd.com/read/29748550/novel-method-for-rapid-toxicity-screening-of-magnetic-nanoparticles
#18
A Erofeev, P Gorelkin, A Garanina, A Alova, M Efremova, N Vorobyeva, C Edwards, Y Korchev, A Majouga
Iron oxide nanoparticles have attracted a great deal of research interest and have been widely used in bioscience and clinical research including as contrast agents for magnetic resonance imaging, hyperthermia and magnetic field assisted radionuclide therapy. It is therefore important to develop methods, which can provide high-throughput screening of biological responses that can predict toxicity. The use of nanoelectrodes for single cell analysis can play a vital role in this process by providing relatively fast, comprehensive, and cost-effective assessment of cellular responses...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29748481/mdm2-overexpression-modulates-the-angiogenesis-related-gene-expression-profile-of-prostate-cancer-cells
#19
Thiagarajan Venkatesan, Ali Alaseem, Aiyavu Chinnaiyan, Sivanesan Dhandayuthapani, Thanigaivelan Kanagasabai, Khalid Alhazzani, Priya Dondapati, Saad Alobid, Umamaheswari Natarajan, Ruben Schwartz, Appu Rathinavelu
The Murine Double Minute 2 (MDM2) amplification or overexpression has been found in many tumors with high metastatic and angiogenic ability. Our experiments were designed to explore the impact of MDM2 overexpression, specifically on the levels of angiogenesis-related genes, which can also play a major role in tumor propagation and increase its metastatic potential. In the present study, we have used the human angiogenesis RT² profiler PCR array to compare the gene expression profile between LNCaP and LNCaP-MST (MDM2 transfected) prostate cancer cells, along with LNCaP-MST cells treated with Nutlin-3, an MDM2 specific inhibitor...
May 10, 2018: Cells
https://www.readbyqxmd.com/read/29746134/ajmaline-oxindole-and-cytotoxic-macroline-akuammiline-bisindole-alkaloids-from-alstonia-penangiana
#20
Joanne Soon-Yee Yeap, Suerialoasan Navanesan, Kae-Shin Sim, Kien-Thai Yong, Subramaniam Gurusamy, Siew-Huah Lim, Yun-Yee Low, Toh-Seok Kam
Examination of the EtOH extract of the Malayan Alstonia penangiana resulted in the isolation of 10 new alkaloids, comprising two ajmaline (1, 2), four macroline oxindole (3-6), and four macroline-akuammiline bisindole alkaloids (7-10). The structures of these alkaloids were determined based on analysis of the spectroscopic data and, in the case of the oxindole 6 and the bisindole alkaloid 7, also confirmed by X-ray diffraction analysis. The bisindole alkaloids 7 and 8 showed pronounced in vitro growth inhibitory activity against an array of human cancer cell lines, including KB, vincristine-resistant KB, PC-3, LNCaP, MCF7, MDA-MB-231, HT-29, HCT 116, and A549 cells with IC50 values in the 0...
May 10, 2018: Journal of Natural Products
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