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Glucosamine and cancer

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https://www.readbyqxmd.com/read/28177244/replacing-d-glucosamine-with-its-l-enantiomer-in-glycosylated-antitumor-ether-lipids-gaels-retains-cytotoxic-effects-against-epithelial-cancer-cells-and-cancer-stem-cells
#1
Makanjuola Ogunsina, Pranati Samadder, Temilolu Idowu, Gilbert Arthur, Frank M Schweizer
We describe metabolically inert L-glucosamine-based L-GAELs that retain the cytotoxic effects of the D-GAELs including the ability to kill BT-474 breast cancer stem cells (CSCs). When compared to adriamycin, cisplatin and the anti CSC agent salinomycin, L-GAELs display superior activity to kill cancer stem cells (CSCs). Mode of action studies indicate that L-GAELs like the D-GAELs kill cells via an apoptosis-independent mechanism that was not due to membranolytic effects.
February 8, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28150883/analysis-of-protein-o-glcnacylation-by-mass-spectrometry
#2
Junfeng Ma, Gerald W Hart
O-linked β-D-N-acetyl glucosamine (O-GlcNAc) addition (O-GlcNAcylation), a post-translational modification of serine/threonine residues of proteins, is involved in diverse cellular metabolic and signaling pathways. Aberrant O-GlcNAcylation underlies the initiation and progression of multiple chronic diseases including diabetes, cancer, and neurodegenerative diseases. Numerous methods have been developed for the analysis of protein O-GlcNAcylation, but instead of discussing the classical biochemical techniques, this unit covers O-GlcNAc characterization by combining several enrichment methods and mass spectrometry detection techniques [including collision-induced dissociation (CID), higher energy collision dissociation (HCD), and electron transfer dissociation (ETD) mass spectrometry]...
February 2, 2017: Current Protocols in Protein Science
https://www.readbyqxmd.com/read/28063272/a-shell-crosslinked-polymeric-micelle-system-for-ph-redox-dual-stimuli-triggered-dox-on-demand-release-and-enhanced-antitumor-activity
#3
Lele Wang, Jing Zhang, Meijia Song, Baocheng Tian, Keke Li, Yan Liang, Jingtian Han, Zimei Wu
Based on targeted amphiphilic block copolymer N-acetyl glucosamine-poly (styrene-alt-maleic anhydride)58-b-polystyrene130 (NAG-P(St-alt-MA)58-b-PSt130), a pH/redox dual-triggered shell-crosslinked polymeric micelle system was constructed. The shell-crosslinked micelles (CLM) were prepared by post-crosslinking method to regulate drug release kinetics using cystamine as linkers between carboxy groups of the shell. Compared with non-crosslinked micelles (NCLM), CLM showed spherical shapes with little increased mean diameter of 102...
December 21, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28028922/n-dihydrogalactochitosan-as-a-potent-immune-activator-for-dendritic-cells
#4
Ahmed El-Hussein, Samuel S K Lam, Joseph Raker, Wei R Chen, Michael R Hamblin
Immunotherapy has become one of the fastest growing areas of cancer research. A promising in situ autologous cancer vaccine (inCVAX) uses a novel immune activator, N-dihydrogalactochitosan (GC), that possesses the ability to stimulate dendritic cells (DC). inCVAX is a combination treatment procedure involving treatment of the tumor with a thermal near-infrared laser to liberate whole cell tumor antigens, followed by injection of GC (a glucosamine polymer with galactose attached to the amino groups) into the treated tumor thereby inducing a systemic anti-tumor immune response...
December 28, 2016: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28000448/glycoconjugated-site-selective-dna-methylating-agent-targeting-glucose-transporters-on-glioma-cells
#5
Mairin K Buchanan, Chase N Needham, Nina E Neill, Maria C White, Charles B Kelly, Kelly Mastro-Kishton, Lacie M Chauvigne-Hines, Tyler J Goodwin, Andrew L McIver, Libero J Bartolotti, Arthur R Frampton, Andrea J Bourdelais, Sridhar Varadarajan
DNA-alkylating drugs continue to remain an important weapon in the arsenal against cancers. However, they typically suffer from several shortcomings because of the indiscriminate DNA damage that they cause and their inability to specifically target cancer cells. We have developed a strategy for overcoming the deficiencies in current DNA-alkylating chemotherapy drugs by designing a site-specific DNA-methylating agent that can target cancer cells because of its selective uptake via glucose transporters, which are overexpressed in most cancers...
January 3, 2017: Biochemistry
https://www.readbyqxmd.com/read/27931795/ikk%C3%AE-inibition-by-a-glucosamine-derivative-enhances-maspin-expression-in-osteosarcoma-cell-line
#6
Martina Leopizzi, Rossana Cocchiola, Edoardo Milanetti, Domenico Raimondo, Laura Politi, Cesare Giordano, Roberto Scandurra, Anna Scotto d'Abusco
Chronic inflammation has been associated to cancer development by the alteration of several inflammatory pathways, such as Nuclear Factor-κB pathway. In particular, IκB kinase α (IKKα), one of two catalytic subunit of IKK complex, has been described to be associated to cancer progression and metastasis in a number of cancers. The molecular mechanism by which IKKα affects cancer progression is not yet completely clarified, anyway an association between IKKα and the expression of Maspin (Mammary Serine Protease Inhibitor or SerpinB5), a tumor suppressor protein, has been described...
January 25, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27886097/investigating-glycol-split-heparin-derived-inhibitors-of-heparanase-a-study-of-synthetic-trisaccharides
#7
Minghong Ni, Stefano Elli, Annamaria Naggi, Marco Guerrini, Giangiacomo Torri, Maurice Petitou
Heparanase is the only known endoglycosidase able to cleave heparan sulfate. Roneparstat and necuparanib, heparanase inhibitors obtained from heparin and currently being tested in man as a potential drugs against cancer, contain in their structure glycol-split uronic acid moieties probably responsible for their strong inhibitory activity. We describe here the total chemical synthesis of the trisaccharide GlcNS6S-GlcA-1,6anGlcNS (1) and its glycol-split (gs) counterpart GlcNS6S-gsGlcA-1,6anGlcNS (2) from glucose...
November 23, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27804885/the-functions-of-heparanase-in-human-diseases
#8
Hao Jin, Shaobo Zhou
The study of the heparanase has long been paid wide attention. Heparanase ,an endo-β-D-glucuronidase, is capable of specifically degrading heparan sulfate(HS), one of the excellular matrix(ECM) components. It exerts its enzymatic activity catalyzing the cleavage of the β (1,4)-glycosidic bond between glucuronic acid and glucosamine residue. HS cleavage results in remodelling of the extracellular matrix as well as in regulating the release of many HS-linked molecules such as growth factors, cytokines and enzymes involved in inflammation, wound healing and tumour invasion...
November 1, 2016: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/27716624/targeting-the-hexosamine-biosynthetic-pathway-and-o-linked-n-acetylglucosamine-cycling-for-therapeutic-and-imaging-capabilities-in-diffuse-large-b-cell-lymphoma
#9
Lan V Pham, Jerry L Bryant, Richard Mendez, Juan Chen, Archito T Tamayo, Zijun Y Xu-Monette, Ken H Young, Ganiraju C Manyam, David Yang, L Jeffrey Medeiros, Richard J Ford
The hexosamine biosynthetic pathway (HBP) requires two key nutrients glucose and glutamine for O-linked N-acetylglucosamine (O-GlcNAc) cycling, a post-translational protein modification that adds GlcNAc to nuclear and cytoplasmic proteins. Increased GlcNAc has been linked to regulatory factors involved in cancer cell growth and survival. However, the biological significance of GlcNAc in diffuse large B-cell lymphoma (DLBCL) is not well defined. This study is the first to show that both the substrate and the endpoint O-GlcNAc transferase (OGT) enzyme of the HBP were highly expressed in DLBCL cell lines and in patient tumors compared with normal B-lymphocytes...
October 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27696858/improving-efficacy-oral-bioavailability-and-delivery-of-paclitaxel-using-protein-grafted-solid-lipid-nanoparticles
#10
Deep Pooja, Hitesh Kulhari, Madhusudana Kuncha, Shyam S Rachamalla, David J Adams, Vipul Bansal, Ramakrishna Sistla
Oral delivery of anticancer drugs remains challenging despite the most convenient route of drug administration. Hydrophobicity and nonspecific toxicities of anticancer agents are major impediments in the development of oral formulation. In this study, we developed wheat germ agglutinin (WGA)-conjugated, solid lipid nanoparticles to improve the oral delivery of the hydrophobic anticancer drug, paclitaxel (PTX). This study was focused to improve the PTX loading in biocompatible lipid matrix with high bioconjugation efficiency...
November 7, 2016: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/27600054/glucosamine-and-n-acetyl-glucosamine-as-new-cest-mri-agents-for-molecular-imaging-of-tumors
#11
Michal Rivlin, Gil Navon
The efficacy of glucosamine (GlcN) and N-acetyl glucosamine (GlcNAc) as agents for chemical exchange saturation transfer (CEST) magnetic resonance molecular imaging of tumors is demonstrated. Both agents reflect the metabolic activity and malignancy of the tumors. The method was tested in two types of tumors implanted orthotopically in mice: 4T1 (mouse mammary cancer cells) and MCF7 (human mammary cancer cells). 4T1 is a more aggressive type of tumor than MCF7 and exhibited a larger CEST effect. Two methods of administration of the agents, intravenous (IV) and oral (PO), gave similar results...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27509929/f2-gel-matrix-a-novel-delivery-system-for-immune-and-gene-vaccinations
#12
REVIEW
Muobarak J Tuorkey
Exploiting the immune system to abolish cancer growth via vaccination is a promising strategy but that is limited by many clinical issues. For DNA vaccines, viral vectors as a delivery system mediate a strong immune response due to their protein structure, which could afflect the cellular uptake of the genetic vector or even induce cytotoxic immune responses against transfected cells. Recently, synthetic DNA delivery systems have been developed and recommended as much easier and simple approaches for DNA delivery compared with viral vectors...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27501037/ligand-anchored-poly-propyleneimine-dendrimers-for-brain-targeting-comparative-in-vitro-and-in-vivo-assessment
#13
Hemant K Patel, Virendra Gajbhiye, Prashant Kesharwani, Narendra K Jain
The present investigation was aimed at developing various ligands-anchored dendrimers and comparing their brain targeting potential at one platform. Sialic acid (S), glucosamine (G) and concanavalin A (C) anchored poly(propyleneimine) (PPI) dendritic nanoconjugates were developed and evaluated for delivery of anti-cancer drug, paclitaxel (PTX) to the brain. MTT assay on U373MG human astrocytoma cells indicated IC50 values of 0.40, 0.65, 0.95, 2.00 and 3.50μM for PTX loaded SPPI, GPPI, CPPI, PPI formulations, and free PTX, respectively...
November 15, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27416332/a-trimodal-closomer-drug-delivery-system-tailored-with-tracing-and-targeting-capabilities
#14
Saurav J Sarma, Aslam A Khan, Lalit N Goswami, Satish S Jalisatgi, M Frederick Hawthorne
The construction and application of a unique monodisperse closomer drug-delivery system (CDDS) integrating three different functionalities onto an icosahedral closo-dodecaborane [B12 ](2-) scaffold is described. Eleven B-OH vertices of [closo-B12 (OH)12 ](2-) were used to attach eleven copies of the anticancer drug chlorambucil and the targeting vector glucosamine through a bifurcating lysine linker. The remaining twelfth vertex was used to attach a fluorescent imaging probe. The presence of multiple glucosamine units offered a monodisperse and highly water-soluble CDDS with a high payload of therapeutic cargo...
August 26, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27357024/use-of-glucosamine-and-chondroitin-supplements-in-relation-to-risk-of-colorectal-cancer-results-from-the-nurses-health-study-and-health-professionals-follow-up-study
#15
Elizabeth D Kantor, Xuehong Zhang, Kana Wu, Lisa B Signorello, Andrew T Chan, Charles S Fuchs, Edward L Giovannucci
Recent epidemiologic evidence has emerged to suggest that use of glucosamine and chondroitin supplements may be associated with reduced risk of colorectal cancer (CRC). We therefore evaluated the association between use of these non-vitamin, non-mineral supplements and risk of CRC in two prospective cohorts, the Nurses' Health Study and Health Professionals Follow-up Study. Regular use of glucosamine and chondroitin was first assessed in 2002 and participants were followed until 2010, over which time 672 CRC cases occurred...
November 1, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27340467/synthesis-and-in-vitro-cytotoxicity-of-acetylated-3-fluoro-4-fluoro-and-3-4-difluoro-analogs-of-d-glucosamine-and-d-galactosamine
#16
Štěpán Horník, Lucie Červenková Šťastná, Petra Cuřínová, Jan Sýkora, Kateřina Káňová, Roman Hrstka, Ivana Císařová, Martin Dračínský, Jindřich Karban
BACKGROUND: Derivatives of D-glucosamine and D-galactosamine represent an important family of the cell surface glycan components and their fluorinated analogs found use as metabolic inhibitors of complex glycan biosynthesis, or as probes for the study of protein-carbohydrate interactions. This work is focused on the synthesis of acetylated 3-deoxy-3-fluoro, 4-deoxy-4-fluoro and 3,4-dideoxy-3,4-difluoro analogs of D-glucosamine and D-galactosamine via 1,6-anhydrohexopyranose chemistry...
2016: Beilstein Journal of Organic Chemistry
https://www.readbyqxmd.com/read/27194471/inhibition-of-the-hexosamine-biosynthetic-pathway-promotes-castration-resistant-prostate-cancer
#17
Akash K Kaushik, Ali Shojaie, Katrin Panzitt, Rajni Sonavane, Harene Venghatakrishnan, Mohan Manikkam, Alexander Zaslavsky, Vasanta Putluri, Vihas T Vasu, Yiqing Zhang, Ayesha S Khan, Stacy Lloyd, Adam T Szafran, Subhamoy Dasgupta, David A Bader, Fabio Stossi, Hangwen Li, Susmita Samanta, Xuhong Cao, Efrosini Tsouko, Shixia Huang, Daniel E Frigo, Lawrence Chan, Dean P Edwards, Benny A Kaipparettu, Nicholas Mitsiades, Nancy L Weigel, Michael Mancini, Sean E McGuire, Rohit Mehra, Michael M Ittmann, Arul M Chinnaiyan, Nagireddy Putluri, Ganesh S Palapattu, George Michailidis, Arun Sreekumar
The precise molecular alterations driving castration-resistant prostate cancer (CRPC) are not clearly understood. Using a novel network-based integrative approach, here, we show distinct alterations in the hexosamine biosynthetic pathway (HBP) to be critical for CRPC. Expression of HBP enzyme glucosamine-phosphate N-acetyltransferase 1 (GNPNAT1) is found to be significantly decreased in CRPC compared with localized prostate cancer (PCa). Genetic loss-of-function of GNPNAT1 in CRPC-like cells increases proliferation and aggressiveness, in vitro and in vivo...
May 19, 2016: Nature Communications
https://www.readbyqxmd.com/read/27156840/reconstitution-of-tgfbr2-in-hct116-colorectal-cancer-cells-causes-increased-lfng-expression-and-enhanced-n-acetyl-d-glucosamine-incorporation-into-notch1
#18
Jennifer Lee, Eva-Maria Katzenmaier, Jürgen Kopitz, Johannes Gebert
Transforming growth factor-β (TGF-β) signaling plays a key role in regulating normal cell growth and differentiation, and mutations affecting members of this pathway contribute to cancer development and metastasis. In DNA mismatch repair (MMR)-deficient colorectal cancers that exhibit the microsatellite instability (MSI) phenotype, biallelic frameshift mutations in the transforming growth factor β receptor type 2 (TGFBR2) gene occur at high frequency that lead to altered signal transduction and downstream target gene expression...
2016: Cellular Signalling
https://www.readbyqxmd.com/read/27156773/potent-anti-proliferative-actions-of-a-non-diuretic-glucosamine-derivative-of-ethacrynic-acid
#19
Surendra R Punganuru, A G M Mostofa, Hanumantha Rao Madala, Debasish Basak, Kalkunte S Srivenugopal
Ethacrynic acid (EA), a known inhibitor of the neoplastic marker glutathione S-transferase P1 and other GSTs, exerts a weak antiproliferative activity against human cancer cells. The clinical use of EA (Edecrin) as an anticancer drug is limited by its potent loop diuretic activity. In this study, we developed a non-diuretic 2-amino-2-deoxy-d-glucose conjugated EA (EAG) to target tumors cells via the highly expressed glucose transporter 1 (GLUT1). Cell survival assays revealed that EAG had little effect on normal cells, but was cytotoxic 3 to 4...
June 15, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27099411/synthesis-of-n-acetyl-glucosamine-analogs-as-inhibitors-for-hyaluronan-biosynthesis
#20
Gilbert Wasonga, Yota Tatara, Ikuko Kakizaki, Xuefei Huang
Elevated hyaluronan expression is a hallmark of many types of cancer. Therefore, inhibition of hyaluronan biosynthesis can potentially slow the growth of tumor cells. Herein, we explore a chain termination strategy to reduce hyaluronan synthesis by tumor cells. Several analogs of glucosamine were prepared, which contained modifications at the C-3 positions. These analogs can possibly cap the nonreducing end of a growing hyaluronan chain, thus lowering the amount of hyaluronan synthesized. Upon incubation with pancreatic cancer cells, a fluorine-containing glucosamine analog was found to exhibit significant inhibitory activities of hyaluronan synthesis...
2013: Journal of Carbohydrate Chemistry
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