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https://www.readbyqxmd.com/read/29317822/novel-functionalized-nanoparticles-for-tumor-targeting-co-delivery-of-doxorubicin-and-sirna-to-enhance-cancer-therapy
#1
Yu Xia, Tiantian Xu, Changbing Wang, Yinghua Li, Zhengfang Lin, Mingqi Zhao, Bing Zhu
Human homeobox protein (Nanog) is highly expressed in most cancer cells and has gradually emerged as an excellent target in cancer therapy, owing to its regulation of cancer cell proliferation, metastasis and apoptosis. In this study, we prepared tumor-targeting functionalized selenium nanoparticles (RGDfC-SeNPs) to load chemotherapeutic doxorubicin (DOX) and Nanog siRNA. Herein, RGDfC peptide was used as a tumor-targeting moiety which could specifically bind to αvβ3 integrins overexpressed on various cancer cells...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29280669/-home-and-ambulatory-artificial-nutrition-nadya-group-report-home-parenteral-nutrition-in-spain-2016
#2
Carmina Wanden-Berghe Lozano, Nuria Virgili Casas, Esther Ramos Boluda, Cristina Cuerda Compés, José Manuel Moreno Villares, José Luis Pereira Cunill, Carmen Gómez Candela, Rosa Burgos Peláez, Mª Ángeles Penacho Lázaro, Antonio Pérez de la Cruz, Julia Álvarez Hernández, Montserrat Gonzalo Marín, Pilar Matía Martín, Ceferino Martínez Faedo, Eva Ángeles Sánchez Martos, Alejandro Sanz Paris, Cristina Campos Martín, Tomás Martín Folgueras, M Ángela Martín Palmero, María de Los Ángeles Martín Fontalba, Luis Miguel Luengo Pérez, Ana Zugasti Murillo, María José Martínez Ramírez, Fátima Carabaña Pérez, Cecilia Martínez Costa, Patricia Díaz Guardiola, Cristina Tejera Pérez, Rosa Mª Parés Marimón, José Antonio Irles Rocamora, Carmen Garde Orbaiz, Miguel Ángel Ponce González, María Victoria García Zafra, Rebeca Sánchez Sánchez, Juan Ramón Urgeles Planella, Antxón Apezetxea Celaya, Olga Sánchez-Vilar Burdiel, Clara Joaquín Ortiz, José Pablo Suárez Llanos, Begoña Pintor de la Maza, Pere Leyes García, Mª Carmen Gil Martínez, Silvia Mauri Roca, María José Carrera Santaliestra
OBJECTIVE: To communicate HPN data obtained from the HPN registry of the NADYA-SENPE group (www.nadya-senpe.com) for the year 2016. MATERIAL AND METHODS: Descriptive analysis of the data collected from adult and pediatric patients with HPN in the NADYA-SENPE group registry from January 1st, 2016 to December 31st, 2016. RESULTS: There were 286 patients from 42 Spanish hospitals (54.2% women), 34 children and 252 adults, with 294 episodes, which represent a prevalence rate of 6...
November 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29277914/synaptic-localization-of-the-sumoylation-regulating-protease-senp5-in-the-adult-mouse-brain
#3
Hiroki Akiyama, Kazuhiko Nakadate, Shin-Ichi Sakakibara
Covalent conjugation of small ubiquitin-like modifiers (SUMOs) or SUMOylation is a reversible post-translational modification that regulates the stability and function of target proteins. SUMOs are removed from substrate proteins by sentrin/SUMO-specific proteases (SENPs). Numerous studies have implicated SUMOylation in various physiological and pathological processes in neurons. To understand the functional roles of SUMOylation, it is necessary to determine the distribution of enzymes regulating SUMO conjugation and deconjugation; yet, the localization of SENPs has not been described in detail in intact brain tissue...
December 26, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29225200/sumo-proteases-as-potential-targets-for-cancer-therapy
#4
Piotr Bialik, Katarzyna Woźniak
Sumoylation is one of the post-translational modifications of proteins, responsible for the regulation of many cellular processes, such as DNA replication and repair, transcription, signal transduction and nuclear transport. During sumoylation, SUMO proteins are covalently attached to the ε-amino group of lysine in target proteins via an enzymatic cascade that requires the sequential action of E1, E2 and E3 enzymes. An important aspect of sumoylation is its reversibility, which involves SUMO-specific proteases called SENPs...
December 8, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/29174512/biosynthesis-of-selenium-nanoparticles-and-nanorods-as-a-product-of-selenite-bioconversion-by-the-aerobic-bacterium-rhodococcus-aetherivorans-bcp1
#5
Alessandro Presentato, Elena Piacenza, Max Anikovskiy, Martina Cappelletti, Davide Zannoni, Raymond J Turner
The wide anthropogenic use of selenium compounds represents the major source of selenium pollution worldwide, causing environmental issues and health concerns. Microbe-based strategies for metal removal/recovery have received increasing interest thanks to the association of the microbial ability to detoxify toxic metal/metalloid polluted environments with the production of nanomaterials. This study investigates the tolerance and the bioconversion of selenite (SeO32-) by the aerobically grown Actinomycete Rhodococcus aetherivorans BCP1 in association with its ability to produce selenium nanoparticles and nanorods (SeNPs and SeNRs)...
November 21, 2017: New Biotechnology
https://www.readbyqxmd.com/read/29167550/speeding-up-bioproduction-of-selenium-nanoparticles-by-using-vibrio-natriegens-as-microbial-factory
#6
Helga Fernández-Llamosas, Laura Castro, María Luisa Blázquez, Eduardo Díaz, Manuel Carmona
Selenium and selenium nanoparticles (SeNPs) are extensively used in biomedicine, electronics and some other industrial applications. The bioproduction of SeNPs is gaining interest as a green method to manufacture these biotechnologically relevant products. Several microorganisms have been used for the production of SeNPs either under aerobic or anaerobic conditions. Vibrio natriegens is a non-pathogenic fast-growing bacterium, easily cultured in different carbon sources and that has recently been engineered for easy genetic manipulation in the laboratory...
November 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29164198/aptamer-modified-selenium-nanoparticles-for-dark-field-microscopy-imaging-of-nucleolin
#7
Meng Li Liu, Hong Yan Zou, Chun Mei Li, Rong Sheng Li, Cheng Zhi Huang
Selenium nanoparticles (SeNPs) with strong green scattering light serving as light scattering nanoprobes for dark-field microscopy imaging are developed for the first time. The SeNPs show good stability, excellent biocompatibility, and high light-producing power, and can precisely and specifically target cancer cells with overexpressed nucleolin (NCL) after modification with aptamers, revealing that the SeNPs can act as a good light scattering nanoprobe for bioimaging and biolabeling.
November 22, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29146736/quantitative-high-throughput-screening-identifies-cytoprotective-molecules-that-enhance-sumo-conjugation-via-the-inhibition-of-sumo-specific-protease-senp-2
#8
Joshua D Bernstock, Daniel Ye, Jayden A Smith, Yang-Ja Lee, Florian A Gessler, Adam Yasgar, Jennifer Kouznetsova, Ajit Jadhav, Zhuoran Wang, Stefano Pluchino, Wei Zheng, Anton Simeonov, John M Hallenbeck, Wei Yang
The development of novel neuroprotective treatments for acute stroke has been fraught with failures, which supports the view of ischemic brain damage as a highly complex multifactorial process. Post-translational modifications such as small ubiquitin-like modifier (SUMO)ylation have emerged as critical molecular regulatory mechanisms in states of both homeostasis and ischemic stress, as evidenced by our previous work. Accordingly, the clinical significance of the selective control of the global SUMOylation process has become apparent in studies of ischemic pathobiology and pathophysiology...
November 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29142221/biogenic-selenium-and-its-hepatoprotective-activity
#9
Baozhen Li, Dan Li, Weixin Jing, Jinhua Fan, Hans-Uwe Dahms, Shao-Chin Lee, Lan Wang
Elemental selenium nanoparticles (SeNPs) have multiple biological activities. In this study, we investigated the protective effects of biogenic SeNPs (BioSeNPs) on CCl4-induced liver damage in mice. The results showed that: (i) when compared to sodium selenite (SS), BioSeNPs has a similar tissue distribution after intragastrical administration to mice; (ii) BioSeNPs and SS showed comparable efficacy in increasing the activities of glutathione peroxidase and thioredoxin reductase in liver cell lines, mice blood and liver; (iii) pretreatment with BioSeNPs inhibiting the elevation of activities of various enzymes significantly which included aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase and liver lipid peroxide (p < 0...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141577/extracellular-synthesis-of-selenium-nanoparticles-from-an-actinomycetes-streptomyces-griseoruber-and-evaluation-of-its-cytotoxicity-on-ht-29-cell-line
#10
V R Ranjitha, Ravishankar Rai Vittal
In the present study, the extracellular synthesis of Selenium nanoparticles (SeNPs) was carried out by using culture supernatant of Streptomyces griseoruber, an Actinomycetes member isolated from the soil. Bioreduction of SeNPs was confirmed by UV-Visible spectrophotometer that showed the peak at 575 nm. XRD pattern confirmed the non-crystalline or amorphous nature of the synthesised SeNPs. FTIR spectra revealed the possible functional group that is responsible for mediating the SeNPs formation. Size and distribution of the biosynthesised SeNPs were analysed by HR-TEM that showed the formation of particle size in the range of 100-250nm...
November 13, 2017: Pharmaceutical Nanotechnology
https://www.readbyqxmd.com/read/29124492/biogenesis-of-selenium-nanoparticles-using-green-chemistry
#11
REVIEW
Sara Shoeibi, Paul Mozdziak, Afsaneh Golkar-Narenji
Selenium binds some enzymes such as glutathione peroxidase and thioredoxin reductase, which may be activated in biological infections and oxidative stress. Chemical and physical methods for synthesizing nanoparticles, apart from being expensive, have their own particular risks. However, nanoparticle synthesis through green chemistry is a safe procedure that different biological sources such as bacteria, fungi, yeasts, algae and plants can be the catalyst bed for processing. Synthesis of selenium nanoparticles (SeNPs) by macro/microorganisms causes variation in morphology and shape of the particles is due to diversity of reduction enzymes in organisms...
November 9, 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/29111042/fabrication-and-stabilization-of-biocompatible-selenium-nanoparticles-by-carboxylic-curdlans-with-various-molecular-properties
#12
Jing-Kun Yan, Wen-Yi Qiu, Yao-Yao Wang, Wen-Han Wang, Yan Yang, He-Nan Zhang
In this study, carboxylic curdlans (Cur-4, Cur-8, and Cur-24) with different molecular properties and chain conformations were used as stabilizer and capping agent to fabricate stable and water-dispersible selenium nanoparticles (SeNPs). Results showed that molecular properties and chain conformations of carboxylic curdlans remarkably influenced the size, morphology, structure, and stability of SeNPs and the carboxylic curdlan was ligated to SeNPs via OH⋯Se interaction. The as-prepared SeNPs was amorphous and showed homogeneous and monodisperse spherical structure with size of ∼50-90nm...
January 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29095026/organization-and-management-of-clinical-nutrition-in-spain-how-do-we-assess-the-quality-of-our-activities
#13
Tomás Martín Folgueras, María Dolores Ballesteros Pomar, Rosa Burgos Peláez, María Victoria Calvo Hernández, Luis Miguel Luengo Pérez, José Antonio Irles Rocamora, Gabriel Olveira, Alfonso Vidal Casariego, Julia Alvarez Hernández
INTRODUCTION: Among the objectives of the SENPE Management Working Group is the development of knowledge and tools related to the evaluation of health outcomes. OBJECTIVES: To obtain an approximate profile of clinical nutrition in hospitals in Spain, specifically concerning its organization, endowment, activities and quality indicators. METHODS: A cross-sectional study conducted in 2013 through a structured survey sent to a random sample of 20% of hospitals from the network of the National Health System of Spain, stratified by the number of hospital beds...
July 28, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29095014/-prevalence-of-nutritional-risk-and-malnutrition-established-in-outpatient-institutionalized-and-hospitalized-populations-in-a-health-department
#14
Icíar Castro-Vega, Silvia Veses Martin, Juana Cantero Llorca, Cristina Barrios Marta, Núria Monzó Albiach, Celia Bañuls Morant, Antonio Hernández-Mijares
INTRODUCTION: The prevalence of disease-related malnutrition depends on the population studied and the methods used for screening, for nutritional assessment and the diagnostic criteria employed. OBJECTIVES: To determine the prevalence of nutritional risk and malnutrition, and the type and degree of malnutrition in outpatient, hospitalized and institutionalized populations in a health department. MATERIAL AND METHODS: Cross-sectional and descriptive study with a randomly selected sample...
July 28, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29090279/selenium-nanoparticles-induce-suppressed-function-of-tumor-associated-macrophages-and-inhibit-dalton-s-lymphoma-proliferation
#15
Pramod Kumar Gautam, Sanjay Kumar, M S Tomar, Rishi Kant Singh, A Acharya, Sanjay Kumar, B Ram
Selenium Nanoparticle (SeNPs) is reported that it enhances and maintains optimal immune during infection and malignancies. To this end, we examined the role of selenium on TAMS whose anti-tumor function suppressed which favor tumor progression. BALB/c (H2d) strain of mice non-Hodgkin type of Dalton's cell line was used to check the role of carboxlic group induced, synthesized SeNPs on TAMs. Screening of IC50 value was done primarily trypen blue exclusion assay and 50% proliferation of DL cells inhibited 40 ng/ml to 50 ng/...
December 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/29054148/determination-of-size-and-mass-and-number-based-concentration-of-biogenic-senps-synthesized-by-lactic-acid-bacteria-by-using-a-multimethod-approach
#16
Gustavo Moreno-Martin, Micaela Pescuma, Teresa Pérez-Corona, Fernanda Mozzi, Yolanda Madrid
Selenium nanoparticles (SeNPs) were synthesized by a green technology using lactic acid bacteria (LAB, Lactobacillus acidophilus, L. delbrueckii subsp. bulgaricus and L. reuteri). The exposure of aqueous sodium selenite to LAB led to the synthesis of SeNPs. Characterization of SeNPs by transmission electron microscopy with energy dispersive X-ray spectrum (EDXS) analysis revealed the presence of stable, predominantly monodispersed and spherical SeNPs of an average size of 146 ± 71 nm. Additionally, SeNPs hydrodynamic size was determined by dispersive light scattering (DLS) and nanoparticle tracking analysis (NTA)...
November 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29043926/efficient-induction-of-apoptosis-in-cancer-cells-by-paclitaxel-loaded-selenium-nanoparticles
#17
Anil Parsram Bidkar, Pallab Sanpui, Siddhartha Sankar Ghosh
AIM: To develop selenium nanoparticles (SeNPs)-based delivery systems for paclitaxel (PTX) and assess their antiproliferative efficacy against cancer cells in vitro with potential mechanistic insight. METHODS: Pluronic F-127 stabilized SeNPs were prepared and characterized. Effects of PTX-loaded SeNPs on lung (A549), breast (MCF7), cervical (HeLa) and colon (HT29) cancer cells were studied by viability assay complemented with flow-cytometric analyses of cell cycle, apoptosis, mitochondrial membrane potential, intracellular reactive oxygen species and caspase activity...
October 18, 2017: Nanomedicine
https://www.readbyqxmd.com/read/29032211/discrete-senps-macromolecule-binding-manipulated-by-hydrophilic-interaction
#18
Amol V Pansare, Amol A Shedge, Vishwanath R Patil
Nanoparticle-protein conjugates are promising probes for biological diagnostics and versatile building blocks for nanotechnology. Here we demonstrate the interaction of SeNPs with BSA macromolecule simply by physical adsorption method. The interaction between SeNPs and BSA has been investigated by UV-Vis, fluorescence, circular dichroism (CD) spectroscopic and thermal methods. The esterase-like activity of BSA towards PNPA was investigated in the presence of SeNPs. The effects of SeNPs on the stability and conformational changes of BSA were studied, which indicated that the binding of SeNPs with BSA induced relative changes in secondary structure of protein...
October 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29017880/development-physicochemical-characterization-and-cytotoxicity-of-selenium-nanoparticles-stabilized-by-beta-lactoglobulin
#19
Jinglin Zhang, Zi Teng, Yang Yuan, Qing-Zhu Zeng, Zhiyuan Lou, Seong-Ho Lee, Qin Wang
Novel Selenium nanoparticles (SeNPs) were developed using beta-lactoglobulin (Blg) as a stabilizer in redox systems of selenite and ascorbic acid in this study. Particle size, morphology, stability, and in vitro biological activity of synthesized Blg stabilized selenium nanoparticles (Blg-SeNPs) were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), ultraviolet-visible spectrophotometry (UV/Vis), and cell toxicity assays, respectively. Stabilizing mechanisms of Blg-SeNPs were investigated by Fourier-transform infrared spectroscopy (FTIR) and protein fluorescence probe...
October 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28979122/green-synthesis-of-selenium-nanoparticles-using-acinetobacter-sp-sw30-optimization-characterization-and-its-anticancer-activity-in-breast-cancer-cells
#20
Sweety A Wadhwani, Mahadeo Gorain, Pinaki Banerjee, Utkarsha U Shedbalkar, Richa Singh, Gopal C Kundu, Balu A Chopade
The aim of this study was to synthesize selenium nanoparticles (SeNPs) using cell suspension and total cell protein of Acinetobacter sp. SW30 and optimize its synthesis by studying the influence of physiological and physicochemical parameters. Also, we aimed to compare its anticancer activity with that of chemically synthesized SeNPs in breast cancer cells. Cell suspension of Acinetobacter sp. SW30 was exposed to various physiological and physicochemical conditions in the presence of sodium selenite to study their effects on the synthesis and morphology of SeNPs...
2017: International Journal of Nanomedicine
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