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https://www.readbyqxmd.com/read/28534981/loss-of-csmd1-expression-disrupts-mammary-duct-formation-while-enhancing-proliferation-migration-and-invasion
#1
Mohamed Kamal, Deborah L Holliday, Ewan E Morrison, Valerie Speirs, Carmel Toomes, Sandra M Bell
The CUB and sushi multiple domains 1 (CSMD1) gene maps to chromosome 8p23, a region deleted in many cancers. Loss of CSMD1 expression is associated with poor prognosis in breast cancer suggesting that it acts as a tumour suppressor in this cancer. However, the function of CSMD1 is largely unknown. Herein, we investigated CSMD1 functions in cell line models. CSMD1 expression was suppressed in MCF10A and LNCaP cells using short hairpin RNA. Functional assays were performed focusing on the 'normal' MCF10A cell line...
May 22, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28533936/synthesis-and-evaluation-of-64-cu-psma-617-targeted-for-prostate-specific-membrane-antigen-in-prostate-cancer
#2
Can Cui, Masayuki Hanyu, Akiko Hatori, Yiding Zhang, Lin Xie, Tomoya Ohya, Masami Fukada, Hisashi Suzuki, Kotaro Nagatsu, Cuiping Jiang, Rui Luo, Guoqiang Shao, Mingrong Zhang, Feng Wang
We radiolabeled a ligand, PSMA-617, of prostate-specific membrane antigen (PSMA) with copper-64 ((64)Cu), to evaluate the metabolism, biodistribution, and potential of [(64)Cu]PSMA-617 for PET imaging of prostate cancer. [(64)Cu]PSMA-617 was synthesized by heating PSMA-617 with [(64)Cu]CuCl2 in buffer solution at 90°C for 5 min. In vitro uptake was determined in two cell lines of prostate cancer. In vivo regional distributions were determined in normal and tumor-bearing mice. High radiolabeling efficiency of (64)Cu for PSMA-617 yielded [(64)Cu]PSMA-617 with >99% radiochemical purity...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28533751/docetaxel-loaded-nanoparticles-assembled-from-%C3%AE-cyclodextrin-calixarene-giant-surfactants-physicochemical-properties-and-cytotoxic-effect-in-prostate-cancer-and-glioblastoma-cells
#3
Laura Gallego-Yerga, Inmaculada Posadas, Cristina de la Torre, Jesús Ruiz-Almansa, Francesco Sansone, Carmen Ortiz Mellet, Alessandro Casnati, José M García Fernández, Valentín Ceña
Giant amphiphiles encompassing a hydrophilic β-cyclodextrin (βCD) component and a hydrophobic calix[4]arene (CA4) module undergo self-assembly in aqueous media to afford core-shell nanospheres or nanocapsules, depending on the nanoprecipitation protocol, with high docetaxel (DTX) loading capacity. The blank and loaded nanoparticles have been fully characterized by dynamic light scattering (DLS), ζ-potential measurements and cryo-transmission electron microscopy (cryo-TEM). The data are compatible with the distribution of the drug between the nanoparticle core and the shell, where it is probably anchored by inclusion of the DTX aromatic moieties in βCD cavities...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28532481/identification-of-endonuclease-domain-containing-1-as-a-novel-tumor-suppressor-in-prostate-cancer
#4
Jianguang Qiu, Shubin Peng, Jie Si-Tu, Cheng Hu, Wentao Huang, Yunhua Mao, Wenhan Qiu, Ke Li, Dejuan Wang
BACKGROUND: Endonuclease domain containing 1 (ENDOD1) is implicated in tumorigenesis and aggressiveness of multiple tumors. In this study, we aimed to investigate the role of ENDOD1 in prostate cancer (PCa). METHODS: Immunohistochemistry were performed in 30 cases of benign prostatic hyperplasia (BPH) and 50 cases of PCa to identify its association with clinicopathological characteristics. Real-time PCR and western blot were used to detect ENDOD1 mRNA and protein expression in normal prostatic epithelial and PCa cell lines...
May 22, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28529647/redox-responsive-hyaluronic-acid-nanogels-for-treating-rhamm-cd168-over-expressive-cancer-both-primary-and-metastatic-tumors
#5
Chenchen Yang, Cheng Li, Peng Zhang, Wei Wu, Xiqun Jiang
It remains a substantial challenge to targetedly deliver drug to both primary tumors and metastatic lesions employing a single nanoparticle delivery system. Here aiming at the receptor for hyaluronic acid mediated motility (RHAMM or CD168), a specific receptor for hyaluronic acid (HA), the bioreductive responsive HA nanogels loaded doxorubicin were prepared. The targeting effects of HA nanogels in high RHAMM-expressed cancer cells, primary and metastatic tumors were investigated. It was found that HA nanogels show a strong in vitro and in vivo RHAMM-mediated cellular uptake and drug delivery...
2017: Theranostics
https://www.readbyqxmd.com/read/28529582/angiotensin-ii-receptor-blockers-induce-autophagy-in-prostate-cancer-cells
#6
Yunseo Woo, Yu-Jin Jung
Angiotensin II receptor blockers (ARBs) are anti-hypertensive drugs that competitively inhibit the binding of angiotensin II to its receptor, resulting in blood vessel dilation and the reduction of blood pressure. These antagonists are also known as sartans, and are a group of pharmaceuticals that possess tetrazole or imidazole groups. In the present study, the anticancer and antimetastatic effects of the ARBs fimasartan, losartan, eprosartan and valsartan on the human prostate cancer PC-3, DU-145 and LNCap-LN3 cell lines were investigated in vitro...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529067/immunoproapoptotic-molecule-scfv-fdt-tbid-modified-mesenchymal-stem-cells-for-prostate-cancer-dual-targeted-therapy
#7
Fengqi Yan, Xia Li, Nan Li, Rui Zhang, Qinhao Wang, Yi Ru, Xiaoke Hao, Jianxin Ni, He Wang, Guojun Wu
Highly efficient target therapy is urgently needed for prostate cancer with overexpression of γ-seminoprotein (γ-SM). Recent studies indicated that mesenchymal stem cells (MSCs) are attractive candidate for cell-based, targeted therapy due to their tumor tropism. Here we designed a dual-target therapeutic system in which MSCs were engineered to produce and deliver scFv-Fdt-tBid, a novel γ-SM-targeted immunoproapoptotic molecule. Such engineered MSCs (MSC.scFv-Fdt-tBid) would home to tumor sites and release the fusion protein to induce the apoptosis of prostate cancer cells...
May 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28527356/exceptional-release-kinetics-and-cytotoxic-selectivity-of-oxidised-mwcnts-double-functionalised-with-doxorubicin-and-prostate-homing-peptide
#8
Vedran Milosavljevic, Ludmila Krejcova, Roman Guran, Hana Buchtelova, Dorota Wawrzak, Lukas Richtera, Zbynek Heger, Pavel Kopel, Vojtech Adam
Multiwall carbon nanotubes (MWCNTs) are among the frequently studied carbon materials, particularly because of their physical and chemical properties and high potential for application in materials chemistry, industry, and medicine. MWCNTs are very promising as transporters of bioactive molecules because of their π electrons and large surface area, which can be easily modified, mostly by the application of inorganic acids for the introduction of carboxylic moieties on the surface. In the present study, we designed an oxidised MWCNTs (oMWCNTs) transporter for the targeted delivery of doxorubicin (Dox)...
May 3, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28521959/cancer-cell-death-induced-by-nanomagnetolectin
#9
Dina M M AlSadek, Haitham A Badr, Tamer A Al-Shafie, Sabry M El-Bahr, Motawa E El-Houseini, Leyla B Djansugurova, Chen-Zhong Li, Hafiz Ahmed
Magnetic nanoparticles represent a new paradigm for molecular targeting therapy in cancer. However, the transformative targeting potential of magnetic nanoparticles has been stymied by a key obstacle-safe delivery to specified target cells in vivo. As cancer cells grow under nutrient deprivation and hypoxic conditions and decorate cell surface with excessive sialoglycans, sialic acid binding lectins might be suitable for targeting cancer cells in vivo. Here we explore the potential of magnetic nanoparticles functionalized with wheat germ lectin (WGA) conjugate, so-called nanomagnetolectin, as apoptotic targetable agents for prostate cancer...
May 10, 2017: European Journal of Cell Biology
https://www.readbyqxmd.com/read/28512032/cytotoxic-triterpene-diglycosides-from-the-sea-cucumber-stichopus-horrens
#10
Nguyen Xuan Cuong, Le Thi Vien, Le Hoang, Tran Thi Hong Hanh, Do Thi Thao, Nguyen Van Thanh, Nguyen Hoai Nam, Do Cong Thung, Phan Van Kiem, Chau Van Minh
Using various chromatographic separation techniques, eight triterpene diglycosides (1-8), including four new compounds namely stichorrenosides A-D (1-4), were isolated from a methanol extract of the Vietnamese sea cucumber S. horrens. Their structures were elucidated based on spectroscopic analyses, including HR ESI MS, 1D and 2D NMR. Their in vitro cytotoxic activity against five human cancer cell lines, Hep-G2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-Mel2 (melanoma), was evaluated using SRB methods...
May 6, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28511652/ing3-promotes-prostate-cancer-growth-by-activating-the-androgen-receptor
#11
Arash Nabbi, Urszula L McClurg, Subhash Thalappilly, Amal Almami, Mahsa Mobahat, Tarek A Bismar, Olivier Binda, Karl T Riabowol
BACKGROUND: The androgen receptor (AR) is a major driver of prostate cancer, and increased AR levels and co-activators of the receptor promote the development of prostate cancer. INhibitor of Growth (ING) proteins target lysine acetyltransferase or lysine deacetylase complexes to the histone H3K4Me3 mark of active transcription, to affect chromatin structure and gene expression. ING3 is a stoichiometric member of the TIP60 lysine acetyltransferase complex implicated in prostate cancer development...
May 16, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28511566/polar-steroid-derivatives-from-the-vietnamese-starfish-astropecten-polyacanthus
#12
Le Thi Vien, Tran Thi Hong Hanh, Pham Thi Hong, Nguyen Van Thanh, Tran Thu Huong, Nguyen Xuan Cuong, Nguyen Hoai Nam, Do Cong Thung, Phan Van Kiem, Chau Van Minh
Five polar steroid derivatives, including one new glycosylated polyhydroxysteroid namely polyacanthoside A (1), were isolated from the water-soluble materials from the MeOH extract of the Vietnamese starfish Astropecten polyacanthus using various chromatographic separations. The structure elucidation was confirmed by spectroscopic experiments such as HR-ESI-MS, 1D and 2D NMR. Among the isolated compounds, (20R,24S)-3β,6α,8,15β,24-pentahydroxy-5α-cholestane (3) showed significant cytotoxic effect against five human cancer cell lines as HepG2, KB, LNCaP, MCF7 and SK-Mel2 with the IC50 values from 18...
May 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28508642/identification-of-alternative-splice-variants-using-unique-tryptic-peptide-sequences-for-database-searches
#13
Trung The Tran, Ravi Chand Bollineni, Margarita Strozynski, Christian J Koehler, Bernd Thiede
Alternative splicing is a mechanism in eukaryotes by which different forms of messenger RNAs (mRNAs) are generated from the same gene. Identification of alternative splice variants requires the identification of peptides specific for alternative splice forms. For this purpose, we generated a human database which contains only unique tryptic peptides specific for alternative splice forms from Swiss-Prot entries. Using this database allows an easy access to splice variant specific peptide sequences that match to MS data...
May 16, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28504694/the-prohibitin-repressive-interaction-with-e2f1-is-rapidly-inhibited-by-androgen-signalling-in-prostate-cancer-cells
#14
S Koushyar, G Economides, S Zaat, W Jiang, C L Bevan, D A Dart
Prohibitin (PHB) is a tumour suppressor molecule with pleiotropic activities across several cellular compartments including mitochondria, cell membrane and the nucleus. PHB and the steroid-activated androgen receptor (AR) have an interplay where AR downregulates PHB, and PHB represses AR. Additionally, their cellular locations and chromatin interactions are in dynamic opposition. We investigated the mechanisms of cell cycle inhibition by PHB and how this is modulated by AR in prostate cancer. Using a prostate cancer cell line overexpressing PHB, we analysed the gene expression changes associated with PHB-mediated cell cycle arrest...
May 15, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28503095/the-cholesterol-metabolite-27-hydroxycholesterol-stimulates-cell-proliferation-via-er%C3%AE-in-prostate-cancer-cells
#15
Shaneabbas Raza, Megan Meyer, Casey Goodyear, Kimberly D P Hammer, Bin Guo, Othman Ghribi
BACKGROUND: For every six men, one will be diagnosed with prostate cancer (PCa) in their lifetime. Estrogen receptors (ERs) are known to play a role in prostate carcinogenesis. However, it is unclear whether the estrogenic effects are mediated by estrogen receptor α (ERα) or estrogen receptor β (ERβ). Although it is speculated that ERα is associated with harmful effects on PCa, the role of ERβ in PCa is still ill-defined. The cholesterol oxidized metabolite 27-hydroxycholesterol (27-OHC) has been found to bind to ERs and act as a selective ER modulator (SERM)...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28500234/niclosamide-and-bicalutamide-combination-treatment-overcomes-enzalutamide-and-bicalutamide-resistant-prostate-cancer
#16
Chengfei Liu, Cameron M Armstrong, Wei Lou, Alan P Lombard, Vito Cucchiara, Xinwei Gu, Joy C Yang, Nagalakshmi Nadiminty, Chong-Xian Pan, Christopher P Evans, Allen C Gao
Activation of the androgen receptor (AR) and its splice variants is linked to advanced prostate cancer and drives resistance to antiandrogens. The roles of AR and AR variants in the development of resistance to androgen deprivation therapy (ADT) and bicalutamide treatment, however, are still incompletely understood. To determine whether AR variants play a role in bicalutamide resistance, we developed bicalutamide resistant LNCaP cells (LNCaP-BicR) and found that these resistant cells express significantly increased levels of AR variants, particularly AR-V7, both at the mRNA and protein levels...
May 12, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28499383/nintedanib-antiangiogenic-inhibitor-effectiveness-in-delaying-adenocarcinoma-progression-in-transgenic-adenocarcinoma-of-the-mouse-prostate-tramp
#17
Raquel Frenedoso da Silva, Ellen Nogueira-Pangrazi, Larissa Akemi Kido, Fabio Montico, Sarah Arana, Dileep Kumar, Komal Raina, Rajesh Agarwal, Valéria Helena Alves Cagnon
BACKGROUND: In recent times, anti-cancer treatments have focused on Fibroblast Growth Factor (FGF) and Vascular-Endothelial Growth Factor (VEGF) pathway inhibitors so as to target tumor angiogenesis and cellular proliferation. One such drug is Nintedanib; the present study evaluated the effectiveness of Nintedanib treatment against in vitro proliferation of human prostate cancer (PCa) cell lines, and growth and progression of different grades of PCa lesions in pre-clinical PCa transgenic adenocarcinoma for the mouse prostate (TRAMP) model...
May 12, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28499171/quinazoline-based-%C3%AE-1-adrenoreceptor-antagonists-with-potent-antiproliferative-activity-in-human-prostate-cancer-cell-lines
#18
Valentina Maestri, Andrea Tarozzi, Elena Simoni, Antonio Cilia, Elena Poggesi, Marina Naldi, Benedetta Nicolini, Letizia Pruccoli, Michela Rosini, Anna Minarini
New α1-adrenoreceptor (α1-AR) antagonists related to prazosin and doxazosin were synthesized by replacing piperazine ring with (S)- or (R)-3-aminopiperidine. Binding studies indicated that the S configuration at the 3-C position of the piperidine ring is crucial for an optimal interaction of the compounds at all three α1-AR subtypes. Quinazolines 9 and 10, bearing a quinone ring on the lateral chain, exhibited also potent antiproliferative activity in LNCaP androgen-sensitive prostate cancer cell lines, higher than that of doxazosin...
May 4, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28496460/doxorubicin-loaded-dna-aptamer-linked-myristilated-chitosan-nanogel-for-targeted-drug-delivery-to-prostate-cancer
#19
Fereshteh Atabi, Seyed Latif Mousavi Gargari, Mehrdad Hashemi, Parichehreh Yaghmaei
Recently, specific attention has been paid to aptamers, short DNA or RNA, as a tool for cancer diagnosis and therapy. In the present study MCS nanogels were prepared by Myristate: Chitosan at 1:9 ratio and were characterized by several techniques. A selected ssDNA aptamer (Apt) capable of detecting LNCaP cells was linked to Myristilated Chitosan nanogels (Apt-MCS) by glutaraldehyde and loaded with Doxorubicin (DOX) to be used in targeted drug delivery against the Prostate cancer cells. LNCaP and PC-3 cells were treated with Apt-MCS-DOX complex and the binding efficiency was estimated by flow cytometry...
2017: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/28495207/targeting-the-hsp90-c-terminal-domain-to-induce-allosteric-inhibition-and-selective-client-downregulation
#20
Kourtney M Goode, Dino Petrov, Renee E Vickman, Scott A Crist, Pete E Pascuzzi, Tim L Ratliff, V Jo Davisson, Tony R Hazbun
BACKGROUND: Inhibition of Hsp90 is desirable due to potential downregulation of oncogenic clients. Early generation inhibitors bind to the N-terminal domain (NTD) but C-terminal domain (CTD) inhibitors are a promising class because they do not induce a heat shock response. Here we present a new structural class of CTD binding molecules with a unique allosteric inhibition mechanism. METHODS: A hit molecule, NSC145366, and structurally similar probes were assessed for inhibition of Hsp90 activities...
May 8, 2017: Biochimica et Biophysica Acta
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