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Cancer cells AND Lactic acid

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https://www.readbyqxmd.com/read/28182125/disulfiram-loaded-porous-plga-microparticle-for-inhibiting-the-proliferation-and-migration-of-non-small-cell-lung-cancer
#1
Chenhui Wang, Jiebing Yang, Haobo Han, Jiawen Chen, Yudi Wang, Quanshun Li, Yanbo Wang
In this study, poly(lactic-co-glycolic acid) (PLGA) was used as a carrier to construct disulfiram-loaded porous microparticle through the emulsion solvent evaporation method, using ammonium bicarbonate as a porogen. The microparticle possessed highly porous surface, suitable aerodynamic diameter for inhalation (8.31±1.33 µm), favorable drug loading (4.09%±0.11%), and sustained release profile. The antiproliferation effect of release supernatant was detected through 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay using non-small-cell lung cancer A549 as a model, with only 13...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28178667/anti-gd2-ch14-18-cho-coated-nanoparticles-mediate-glioblastoma-gbm-specific-delivery-of-the-aromatase-inhibitor-letrozole-reducing-proliferation-migration-and-chemoresistance-in-patient-derived-gbm-tumor-cells
#2
Amanda Tivnan, Tatjana Heilinger, Joanne Ramsey, Gemma O'Connor, Jenny Pokorny, Jann Sarkaria, Brett Stringer, Bryan Day, Andrew Boyd, Ella Kim, Holger Lode, Sally-Ann Cryan, Jochen Prehn
Aromatase is a critical enzyme in the irreversible conversion of androgens to oestrogens, with inhibition used clinically in hormone-dependent malignancies. We tested the hypothesis that targeted aromatase inhibition in an aggressive brain cancer called glioblastoma (GBM) may represent a new treatment strategy. In this study, aromatase inhibition was achieved using third generation inhibitor, Letrozole, encapsulated within the core of biodegradable poly lactic-co-glycolic acid (PLGA) nanoparticles (NPs). PLGA-NPs were conjugated to human/mouse chimeric anti-GD2 antibody ch14...
February 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28127139/b-cell-lymphoma-thiamine-deficiency-and-lactic-acidosis
#3
Umair Masood, Anuj Sharma, Sonny Nijjar, Karthikeyan Sitaraman
Type B lactic acidosis is found in the absence of tissue hypoperfusion, can be associated with malignancies, and can be caused by thiamine deficiency. We present a patient who presented with an abdominal mass that biopsy disclosed to be a diffuse large B-cell lymphoma. Because thiamine deficiency is a rare cause of lactic acidosis in cancer, the patient was treated with intravenous thiamine with rapid normalization of the lactic acid level. The level prior to treatment was low. The case emphasizes a rare cause of lactic acidosis...
January 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28121206/a-reconstituted-thermosensitive-hydrogel-system-based-on-paclitaxel-loaded-amphiphilic-copolymer-nanoparticles-and-antitumor-efficacy
#4
Yanqin Liang, Chengxia Dong, Jianhua Zhang, Liandong Deng, Anjie Dong
Combination delivery systems composed of injectable hydrogels and drug-incorporated nanoparticles are urgently in regional cancer chemotherapy to facilitate efficient delivery of chemotherapeutic agents, enhance antitumor efficiency and decrease side effects. Here, we developed a novel thermosensitive amphiphilic triblock copolymer consisting of methoxy poly(ethylene glycol), poly(octadecanedioic anhydride) and D,L-lactic acid oligomer (PEOALA), built a combination system of thermosensitive injectable hydrogel PTX/PEOALA(Gel) based on paclitaxel (PTX)-loaded PEOALA nanoparticles (NPs)...
January 25, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28119812/inhalable-oridonin-loaded-poly-lactic-co-glycolic-acid-large-porous-microparticles-for-in-situ-treatment-of-primary-non-small-cell-lung-cancer
#5
Lifei Zhu, Miao Li, Xiaoyan Liu, Lina Du, Yiguang Jin
Non-small cell lung cancer (NSCLC) accounts for about 85% of all lung cancers. Traditional chemotherapy for this disease leads to serious side effects. Here we prepared an inhalable oridonin-loaded poly(lactic-co-glycolic)acid (PLGA) large porous microparticle (LPMP) for in situ treatment of NSCLC with the emulsion/solvent evaporation/freeze-drying method. The LPMPs were smooth spheres with many internal pores. Despite a geometric diameter of ~10 µm, the aerodynamic diameter of the spheres was only 2.72 µm, leading to highly efficient lung deposition...
January 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28110067/poly-glycerol-sebacate-elastomer-supports-bone-regeneration-by-its-mechanical-properties-being-closer-to-osteoid-tissue-rather-than-to-mature-bone
#6
S H Zaky, K W Lee, J Gao, A Jensen, K Verdelis, Y Wang, A J Almarza, C Sfeir
: Mechanical load influences bone structure and mass. Arguing the importance of load-transduction, we investigated the mechanisms inducing bone formation using an elastomeric substrate. We characterized Poly (glycerol sebacate) (PGS) in-vitro for its mechanical properties, compatibility with osteoprogenitor cells regarding adhesion, proliferation, differentiation under compression versus static cultures and in-vivo for the regeneration of a rabbit ulna critical size defect. The load-transducing properties of PGS were compared in-vitro to a stiffer poly lactic-co- glycolic-acid (PLA/PGA) scaffold of similar porosity and interconnectivity...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28102776/targeted-delivery-of-cisplatin-to-tumor-xenografts-via-the-nanoparticle-component-of-nano-diamino-tetrac
#7
Thangirala Sudha, Dhruba J Bharali, Murat Yalcin, Noureldien He Darwish, Melis Debreli Coskun, Kelly A Keating, Hung-Yun Lin, Paul J Davis, Shaker A Mousa
AIM: Nano-diamino-tetrac (NDAT) targets a receptor on integrin αvβ3; αvβ3 is generously expressed by cancer cells and dividing endothelial cells and to a small extent by nonmalignant cells. The tetrac (tetraiodothyroacetic acid) of NDAT is covalently bound to a poly(lactic-co-glycolic acid) nanoparticle that encapsulates anticancer drugs. We report NDAT delivery efficiency of cisplatin to agent-susceptible urinary bladder cancer xenografts. MATERIALS & METHODS: Cisplatin-loaded NDAT (NDAT-cisplatin) was administered to xenograft-bearing nude mice...
January 19, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28099149/clinically-relevant-hif-1%C3%AE-dependent-metabolic-reprogramming-in-oropharyngeal-squamous-cell-carcinomas-includes-coordinated-activation-of-caix-and-the-mir-210-iscu-signaling-axis-but-not-mct1-and-mct4-upregulation
#8
Inés Sáenz-de-Santa-María, Cristóbal Bernardo-Castiñeira, Pablo Secades, Sandra Bernaldo-de-Quirós, Juan Pablo Rodrigo, Aurora Astudillo, María-Dolores Chiara
Metabolic reprogramming is a very heterogeneous phenomenon in cancer. It mostly consists on increased glycolysis, lactic acid formation and extracellular acidification. These events have been associated to increased activity of the hypoxia inducible factor, HIF-1α. This study aimed at defining the metabolic program activated by HIF-1α in oropharyngeal squamous cell carcinomas (SCC) and assessing its clinical impact. Global gene/miRNA expression was analyzed in SCC-derived cells exposed to hypoxia. Expression of HIF-1α, the carbonic anhydrase CAIX, and the lactate/H+ transporters MCT1 and MCT4 were analyzed by immunohistochemistry in 246 SCCs...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28075415/inhibitory-effects-of-probiotic-lactobacillus-on-the-growth-of-human-colonic-carcinoma-cell-line-ht-29
#9
Zhung-Yuan Chen, You-Miin Hsieh, Chun-Chih Huang, Cheng-Chih Tsai
This study was conducted to investigate the inhibitory effect of Lactobacillus cells and supernatants on the growth of the human colon cancer cell line HT-29. Our study results indicated that the PM153 strain exhibits the best adhesion ability and the highest survival in the gastrointestinal tract simulation experiment. Furthermore, after an 8-h co-culture of PM153 and HT-29 cells, the PM153 strain can induce the secretion of nitric oxide from the HT-29 cells. In addition, after the co-culture of the BCRC17010 strain (10⁸ cfu/mL) and HT-29 cells, the Bax/Bcl-2 ratio in the HT-29 cells was 1...
January 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28073412/-clinical-effect-of-ultrasound-guided-injection-of-biodegradable-poly-lactic-co-glycolic-acid-fe3o4-in-situ-implant-for-magnetic-thermal-ablation-in-treatment-of-nude-mice-with-human-liver-cancer-smmc-7721-cells
#10
B Liang, G Q Zuo, Y Y Zheng, S He, D Y Zuo
Objective: To prepare the Fe3O4-loaded biodegradable liquid-solid phase inversion poly(lactic-co-glycolic acid) (PLGA) in situ implant for ultrasound-guided injection into nude mouse tumor model, and to investigate its clinical effect in thermomagnetic treatment of nude mice with human liver cancer SMMC-7721 cells in an alternating magnetic field. Methods: An in situ implant containing 10% Fe3O4 was prepared, and 50 μl Fe3O4-PLGA-NMP gel was injected into the subcutaneous tissue of Kunming mice. The degradation of this material was observed for 2 consecutive months, and the changes in body weight were recorded...
December 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28062368/epothilone-b-based-3-in-1-polymeric-micelle-for-anticancer-drug-therapy
#11
Dae Hwan Shin, Glen S Kwon
Epothilones are microtubule inhibitors that are promising alternatives to paclitaxel due to enhanced anticancer efficacy. While epothilones are slightly more water soluble than paclitaxel and more active against paclitaxel-resistant cells, they still require formulation with Cremophor EL and/or cosolvents and drug resistance still limits therapeutic efficacy. In this report, we showed that the combinational treatment of epothilone B (EpoB), 17-N-allylamino-17-demethoxygeldanamycin (17-AAG, Hsp90 inhibitor), and rapamycin (mTOR inhibitor) displays strong anticancer activity in vitro and in vivo...
February 25, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28044473/synthesis-characterization-and-in-vitro-evaluation-of-targeted-gold-nanoshelled-poly-d-l-lactide-co-glycolide-nanoparticles-carrying-anti-p53-antibody-as-a-theranostic-agent-for-ultrasound-contrast-imaging-and-photothermal-therapy
#12
Li Xu, Caifeng Wan, Jing Du, Hongli Li, Xuesong Liu, Hong Yang, Fenghua Li
Breast cancer is the leading cause of cancer-related deaths in women and earlier detection can substantially reduce deaths from breast cancer. Polymers with targeted ligands are widely used in the field of molecular ultrasound imaging and targeted tumor therapy. In our study, the nanotheranostic agent was fabricated through filling perfluoropropane (C3F8) into poly(d,l-lactic-co-glycolic acid) nanoparticles (PLGA NPs), followed by the formation of gold nanoshell on the surface, then conjugated with anti p53 antibody which has high specificity with the p53 protein overexpressing in breast cancer...
January 16, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28044342/in-vitro-cytotoxicity-and-combination-effects-of-the-docetaxel-conjugated-and-doxorubicin-conjugated-poly-lactic-acid-poly-ethylene-glycol-folate-based-polymeric-micelles-in-human-ovarian-cancer-cells
#13
Zahra Hami, Seyed Mahdi Rezayat, Kambiz Gilani, Mohsen Amini, Mahmoud Ghazi-Khansari
OBJECTIVES: The pH-sensitive doxorubicin (DOX)-conjugated and docetaxel (DTX)-conjugated poly(lactic acid)-poly(ethylene glycol)-folate (PLA-PEG-FOL)-based polymeric micelles were developed and characterized in this study. KEY FINDINGS: The drugs were released from the micelles (particle size, ~185 nm) in a pH-dependent manner. The drug-conjugated PLA-PEG-FOL micelles showed higher cellular uptake than nontargeting ones. Single agent and combination in-vitro cytotoxicity studies were also performed using the two drugs in both free and their micellar forms in SKOV3 human ovarian cancer cells using three different cytotoxicity assays...
February 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28026115/immune-cell-mediated-biodegradable-theranostic-nanoparticles-for-melanoma-targeting-and-drug-delivery
#14
Zhiwei Xie, Yixue Su, Gloria B Kim, Erhan Selvi, Chuying Ma, Virginia Aragon-Sanabria, Jer-Tsong Hsieh, Cheng Dong, Jian Yang
Although tremendous efforts have been made on targeted drug delivery systems, current therapy outcomes still suffer from low circulating time and limited targeting efficiency. The integration of cell-mediated drug delivery and theranostic nanomedicine can potentially improve cancer management in both therapeutic and diagnostic applications. By taking advantage of innate immune cell's ability to target tumor cells, the authors develop a novel drug delivery system by using macrophages as both nanoparticle (NP) carriers and navigators to achieve cancer-specific drug delivery...
December 27, 2016: Small
https://www.readbyqxmd.com/read/28012991/in-vitro-and-in-vivo-evaluation-of-anti-nucleolin-targeted-magnetic-plga-nanoparticles-loaded-with-doxorubicin-as-a-theranostic-agent-for-enhanced-targeted-cancer-imaging-and-therapy
#15
Jafar Mosafer, Khalil Abnous, Mohsen Tafaghodi, Ahad Mokhtarzadeh, Mohammad Ramezani
A superparamagnetic iron oxide nanoparticles (SPIONs(1))/doxorubicin (Dox(2)) co-loaded poly(lactic-co-glycolic acid) (PLGA(3))-based nanoparticles targeted with AS1411 aptamer (Apt(4)) against murine C26 colon carcinoma cells is successfully developed via a modified multiple emulsion solvent evaporation method for theranostic purposes. The mean size of SPIO/Dox-NPs(5) (NPs) was 130 nm with a narrow particle size distribution and Dox loading of 3.0%. The SPIO loading of 16.0% and acceptable magnetic properties are obtained and analyzed using thermogravimetric and vibration simple magnetometer analysis, respectively...
December 21, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28004315/bioflavonoid-fisetin-loaded-%C3%AE-tocopherol-poly-lactic-acid-based-polymeric-micelles-for-enhanced-anticancer-efficacy-in-breast-cancers
#16
Lei Wang, De-Zhong Zhang, Yu-Xia Wang
PURPOSE: In this study, tocopherol based polymeric micelles were successfully prepared to enhance the anticancer effect of fisetin (FIS) in breast cancer cells. METHODS: The drug-loaded carrier was characterized in terms of physicochemical and in vivo parameters. RESULTS: Compared to FIS, FIS-TPN showed higher cellular uptake in MCF-7 breast cancer cells as revealed by CLSM and flow cytometry. The cytotoxicity assay results clearly showed that the free FIS and FIS-TPN exhibited a typical dose-dependent toxic effect in MCF-7 breast cancer cells...
December 21, 2016: Pharmaceutical Research
https://www.readbyqxmd.com/read/28001364/-111-in-and-irdye800cw-labeled-pla-peg-nanoparticle-for-imaging-prostate-specific-membrane-antigen-expressing-tissues
#17
Sangeeta R Banerjee, Catherine A Foss, Allen Horhota, Mrudula Pullambhatla, Kevin McDonnell, Stephen Zale, Martin G Pomper
Targeted delivery of drug-encapsulated nanoparticles is a promising new approach to safe and effective therapeutics for cancer. Here we investigate the pharmacokinetics and biodistribution of a prostate-specific membrane antigen (PSMA)-targeted nanoparticle based on a poly(lactic acid)-polyethylene glycol copolymer by utilizing single photon emission computed tomography (SPECT) and fluorescence imaging of a low-molecular-weight, PSMA-targeting moiety attached to the surface and oriented toward the outside environment...
December 21, 2016: Biomacromolecules
https://www.readbyqxmd.com/read/27989859/development-and-mechanistic-insight-into-enhanced-cytotoxic-potential-of-hyaluronic-acid-conjugated-nanoparticles-in-cd44-overexpressing-cancer-cells
#18
Ankit Saneja, Debasis Nayak, M Srinivas, Amit Kumar, Vaibhav Khare, Archana Katoch, Anindya Goswami, Ram A Vishwakarma, Sanghapal D Sawant, Prem N Gupta
The overexpression of CD44 in cancer cells reroutes number of oncogenic pathways including the central Pi3K/Akt/NF-kB pathway leading to cancer progression and malignancy. Herein, we developed hyaluronic acid-modified poly(dl-lactic-co-glycolic acid)-poly (ethylene glycol) nanoparticles (PLGA-PEG-HA NPs) for targeted delivery of TTQ (thio-tetrazolyl analog of a clinical candidate, IC87114) to CD44 overexpressing cancer cells. The PLGA-PEG co-polymer was synthesized and characterized by NMR and FTIR. The co-polymer based nanoparticles were prepared by solvent evaporation method and hyaluronic acid (HA) was conjugated on to the nanoparticle surface via EDC/NHS chemistry...
January 15, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27989750/the-antioxidant-uncoupling-protein-2-stimulates-hnrnpa2-b1-glut1-and-pkm2-expression-and-sensitizes-pancreas-cancer-cells-to-glycolysis-inhibition
#19
Jessica Brandi, Daniela Cecconi, Marco Cordani, Margalida Torrens-Mas, Raffaella Pacchiana, Elisa Dalla Pozza, Giovanna Butera, Marcello Manfredi, Emilio Marengo, Jordi Oliver, Pilar Roca, Ilaria Dando, Massimo Donadelli
Several evidence indicate that metabolic alterations play a pivotal role in cancer development. Here, we report that the mitochondrial uncoupling protein 2 (UCP2) sustains the metabolic shift from mitochondrial oxidative phosphorylation (mtOXPHOS) to glycolysis in pancreas cancer cells. Indeed, we show that UCP2 sensitizes pancreas cancer cells to the treatment with the glycolytic inhibitor 2-deoxy-D-glucose. Through a bidimensional electrophoresis analysis, we identify 19 protein species differentially expressed after treatment with the UCP2 inhibitor genipin and, by bioinformatic analyses, we show that these proteins are mainly involved in metabolic processes...
October 27, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27987951/hyaluronic-acid-coated-nanoparticles-for-targeted-photodynamic-therapy-of-cancer-guided-by-near-infrared-and-mr-imaging
#20
Kyung Eun Park, Young-Woock Noh, Ahreum Kim, Yong Taik Lim
In this study, the multifaceted properties of hyaluronic acid (HA) were used for the targeted therapy of cancer by photodynamic therapy (PDT) guided by molecular imaging. Near-infrared (NIR) photosensitizers (Chlorin e6; Ce6) were encapsulated into poly(lactic-co-glycolic acid) nanoparticles (PLGA NPs) coated with HA that can act as CD44 targeting ligand. The abundant carboxylate groups of HA also enabled the chelation of gadolinium ions (Gd(3+)), T1-weighted MRI contrast agents, on the surface of PLGA NPs...
February 10, 2017: Carbohydrate Polymers
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