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https://www.readbyqxmd.com/read/28093991/cancer-nanotechnology-recent-trends-and-developments-in-strategies-for-targeting-cancer-cells-to-improve-cancer-imaging-and-treatment
#1
Jingyao Xu, Xiaoling Zhou, Yifei Li, Yudan Tian
Nanotechnology is a multidisciplinary field, which have the potential to cover applications in many subjects such as biology, chemistry and physics. The combined efforts of these subjects can lead to the successful engineering of nanodevices and nanovectors for targeted delivery and sensing/detection of cancer cells/tissues. The modulation of nanomaterials at surface and bulk level further adds value to this technology and develop strategies for early detection of precancerous and malignant cells from biological fluids...
January 16, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28093297/bottom-up-synthesis-of-carbon-nanoparticles-with-higher-doxorubicin-efficacy
#2
Samer Bayda, Mohamad Hadla, Stefano Palazzolo, Vinit Kumar, Isabella Caligiuri, Emmanuele Ambrosi, Enrico Pontoglio, Marco Agostini, Tiziano Tuccinardi, Alvise Benedetti, Pietro Riello, Vincenzo Canzonieri, Giuseppe Corona, Giuseppe Toffoli, Flavio Rizzolio
Nanomedicine requires intelligent and non-toxic nanomaterials for real clinical applications. Carbon materials possess interesting properties but with some limitations due to toxic effects. Interest in carbon nanoparticles (CNPs) is increasing because they are considered green materials with tunable optical properties, overcoming the problem of toxicity associated with quantum dots or nanocrystals, and can be utilized as smart drug delivery systems. Using black tea as a raw material, we synthesized CNPs with a narrow size distribution, tunable optical properties covering visible to deep red absorption, non-toxicity and easy synthesis for large-scale production...
January 13, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28088573/heat-shock-proteins-and-cancer-how-can-nanomedicine-be-harnessed
#3
REVIEW
Félix Sauvage, Samir Messaoudi, Elias Fattal, Gillian Barratt, Juliette Vergnaud-Gauduchon
Heat shock protein (hsp90) is an interesting target for cancer therapy because it is involved in the folding and stabilization of numerous proteins, including many that contribute to the development of cancer. It is part of the chaperone machinery that includes other heat shock proteins (hsp70, hsp27, hsp40) and is mainly localized in the cytosol, although many analogues or isoforms can be found in mitochondrion, endoplasmic reticulum and the cell membrane. Many potential inhibitors of hsp90 have been tested for cancer therapy but their usefulness is limited by their poor solubility in water and their ability to reach the target cells and the correct intracellular compartment...
January 11, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28079367/robust-responsive-and-targeted-plga-anticancer-nanomedicines-by-combining-reductively-cleavable-surfactant-and-covalent-hyaluronic-acid-coating
#4
Jintian Wu, Jian Zhang, Chao Deng, Fenghua Meng, Ru Cheng, Zhiyuan Zhong
PLGA-based nanomedicines have enormous potential for targeted cancer therapy. To boost their stability, targetability and intracellular drug release, here we developed novel multifunctional PLGA anticancer nanomedicines by combining a reductively cleavable surfactant (RCS), vitamin E-SS-oligo(methyl diglycol L-glutamate), with covalent hyaluronic acid (HA) coating. Reduction-sensitive HA-coated PLGA nanoparticles (rHPNPs) were obtained with small sizes of 55 - 61 nm and zeta potentials of -26.7 - -28.8 mV at 18...
January 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28068099/mechanisms-and-barriers-in-cancer-nanomedicine-addressing-challenges-looking-for-solutions
#5
Thomas J Anchordoquy, Yechezkel Barenholz, Diana Boraschi, Michael Chorny, Paolo Decuzzi, Marina A Dobrovolskaia, Z Shadi Farhangrazi, Dorothy Farrell, Alberto Gabizon, Hamidreza Ghandehari, Biana Godin, Ninh M La-Beck, Julia Ljubimova, S Moein Moghimi, Len Pagliaro, Ji-Ho Park, Dan Peer, Erkki Ruoslahti, Natalie J Serkova, Dmitri Simberg
Remarkable progress has recently been made in the synthesis and characterization of engineered nanoparticles for imaging and treatment of cancers, resulting in several promising candidates in clinical trials. Despite these advances, clinical applications of nanoparticle-based therapeutic/imaging agents remain limited by biological, immunological, and translational barriers. In order to overcome the existing status quo in drug delivery, there is a need for open and frank discussion in the nanomedicine community on what is needed to make qualitative leaps toward translation...
January 9, 2017: ACS Nano
https://www.readbyqxmd.com/read/28063356/nanoparticles-for-radiooncology-mission-vision-challenges
#6
REVIEW
Leoni A Kunz-Schughart, Anna Dubrovska, Claudia Peitzsch, Alexander Ewe, Achim Aigner, Samuel Schellenburg, Michael H Muders, Silke Hampel, Giuseppe Cirillo, Francesca Iemma, Rainer Tietze, Christoph Alexiou, Holger Stephan, Kristof Zarschler, Orazio Vittorio, Maria Kavallaris, Wolfgang J Parak, Lutz Mädler, Suman Pokhrel
Cancer is one of the leading non-communicable diseases with highest mortality rates worldwide. About half of all cancer patients receive radiation treatment in the course of their disease. However, treatment outcome and curative potential of radiotherapy is often impeded by genetically and/or environmentally driven mechanisms of tumor radioresistance and normal tissue radiotoxicity. While nanomedicine-based tools for imaging, dosimetry and treatment are potential keys to the improvement of therapeutic efficacy and reducing side effects, radiotherapy is an established technique to eradicate the tumor cells...
December 14, 2016: Biomaterials
https://www.readbyqxmd.com/read/28062368/epothilone-b-based-3-in-1-polymeric-micelle-for-anticancer-drug-therapy
#7
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...
January 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28060268/a-facile-and-efficient-approach-for-the-production-of-reversible-disulfide-cross-linked-micelles
#8
Yuanpei Li, Gaurav Bharadwaj, Joyce S Lee
Nanomedicine is an emerging form of therapy that harnesses the unique properties of particles that are nanometers in scale for biomedical application. Improving drug delivery to maximize therapeutic outcomes and to reduce drug-associated side effects are some of the cornerstones of present-day nanomedicine. Nanoparticles in particular have found a wide application in cancer treatment. Nanoparticles that offer a high degree of flexibility in design, application, and production based on the tumor microenvironment are projected to be more effective with rapid translation into clinical practice...
December 23, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28057522/nanomedicines-for-dysfunctional-macrophage-associated-diseases
#9
REVIEW
Hongliang He, Shobha Ghosh, Hu Yang
Macrophages play vital functions in host inflammatory reaction, tissue repair, homeostasis and immunity. Dysfunctional macrophages have significant pathophysiological impacts on diseases such as cancer, inflammatory diseases (rheumatoid arthritis and inflammatory bowel disease), metabolic diseases (atherosclerosis, diabetes and obesity) and major infections like human immunodeficiency virus infection. In view of this common etiology in these diseases, targeting the recruitment, activation and regulation of dysfunctional macrophages represents a promising therapeutic strategy...
January 3, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28050141/stakeholder-views-on-participant-selection-for-first-in-human-trials-in-cancer-nanomedicine
#10
P Satalkar, B S Elger, D M Shaw
BACKGROUND: Participant selection for first-in-human (fih) trials involves complex decisions. The trial design makes it unlikely that participants will receive clinically relevant therapeutic benefit, but they are likely to experience risks of various magnitudes and types. The aim of the present paper was to describe and discuss the views of investigators and ethics committee members about the choice of trial participants for fih trials in cancer nanomedicine. METHODS: We drew insights from an exploratory qualitative study involving thematic analysis of 46 in-depth interviews with key stakeholders in Europe and North America involved in fih nanomedicine trials...
December 2016: Current Oncology
https://www.readbyqxmd.com/read/28044936/nano-delivery-in-pediatric-tumors-looking-back-moving-forward
#11
Marta Colletti, Virginia Di Paolo, Angela Galardi, Giuseppe Maria Milano, Angela Mastronuzzi, Franco Locatelli, Angela Di Giannatale
Recent advances in the treatment of pediatric tumors led to an improvement of survival in this population. As a result, many pediatric survivors experience long-term effects that impact their quality of life. Therefore, it is extremely important to identify new treatment approaches that may target the tumor minimizing the drug-related side effects. Over the past 10 years, remarkable advances in nanomedicine have provided several potential tools for cancer treatment. Recently, there has been a growing interest towards therapeutic nanocarriers in the pediatric field, since they represent a new strategy to enhance the drug efficacy and reduce the toxicity...
January 2, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28042778/personalized-nanoparticles-for-cancer-therapy-a-call-for-greater-precision
#12
Nare Sahakyan, Amir Haddad, Shye Richardson, Valery Forcha-Etieundem, Lee Christopher, Hanan Alharbi, Robert Campbell
Nanotechnology has brought about the advent of personalized medicine in the era of targeted therapeutic strategies for cancer therapy. The ability to exploit tumor features for therapeutic gain has made it possible to manufacture more effective nanomedicines for cancer treatment. However, known obstacles, including the inability to overcome pathophysiological barriers of tumors, have impeded disease management. In spite of this, recent efforts have been made to develop more functionalized nanosystems that utilize the active-targeting approach...
January 2, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28027948/safe-approaches-for-camptothecin-delivery-structural-analogues-and-nanomedicines
#13
REVIEW
Pablo Botella, Eva Rivero-Buceta
Twenty-(S)-camptothecin is a strongly cytotoxic molecule with excellent antitumor activity over a wide spectrum of human cancers. However, the direct formulation is limited by its poor water solubility, low plasmatic stability and severe toxicity, which currently limits its clinical use. As a consequence, two strategies have been developed in order to achieve safe and efficient delivery of camptothecin to target cells: structural analogues and nanomedicines. In this review, we summarize recent advances in the design, synthesis and development of camptothecin molecular derivatives and supramolecular vehicles, following a systematic classification according to structure-activity relationships (structural analogues) or chemical nature (nanomedicines)...
December 24, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28027539/construction-and-comparison-of-different-nanocarriers-for-co-delivery-of-cisplatin-and-curcumin-a-synergistic-combination-nanotherapy-for-cervical-cancer
#14
Changming Li, Xiangcheng Ge, Liguo Wang
PURPOSE: Co-delivery of two or more drugs into the same cancer cells or tissues in the same nanocarriers provides a new paradigm in cancer treatment. In this study, two kinds of nanocarriers: lipid-polymer hybrid nanoparticles (LPNs) and polymeric nanoparticles (PNPs) were constructed and compared for co-delivery of cisplatin (DDP) and curcumin (CUR). METHODS: DDP and CUR loaded LPNs (D/C/LPNs) and PNPs (D/C/PNPs) were prepared. Two kinds of nanocarriers were characterized in terms of particle size, zeta potential, drug encapsulation efficiency (EE), and drug release...
December 24, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28027442/theranostic-liposomes-with-hypoxia-activated-prodrug-to-effectively-destruct-hypoxic-tumors-post-photodynamic-therapy
#15
Liangzhu Feng, Liang Cheng, Ziliang Dong, Danlei Tao, Todd E Barnhart, Weibo Cai, Meiwan Chen, Zhuang Liu
Photodynamic therapy (PDT), a noninvasive cancer therapeutic method triggered by light, would lead to severe tumor hypoxia after treatment. Utilizing a hypoxia-activated prodrug, AQ4N, which only shows toxicity to cancer cells under hypoxic environment, herein, a multipurpose liposome is prepared by encapsulating hydrophilic AQ4N and hydrophobic hexadecylamine conjugated chlorin e6 (hCe6), a photosensitizer, into its aqueous cavity and hydrophobic bilayer, respectively. After chelating a (64)Cu isotope with Ce6, the obtained AQ4N-(64)Cu-hCe6-liposome is demonstrated to be an effective imaging probe for in vivo positron emission tomography, which together with in vivo fluorescence and photoacoustic imaging uncovers efficient passive homing of those liposomes after intravenous injection...
December 29, 2016: ACS Nano
https://www.readbyqxmd.com/read/28026115/immune-cell-mediated-biodegradable-theranostic-nanoparticles-for-melanoma-targeting-and-drug-delivery
#16
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/28024395/metalloporphyrin-encapsulated-biodegradable-nanosystems-for-highly-efficient-magnetic-resonance-imaging-guided-sonodynamic-cancer-therapy
#17
Ping Huang, Xiaoqin Qian, Yu Chen, Luodan Yu, Han Lin, Liying Wang, Yufang Zhu, Jianlin Shi
Traditional photodynamic therapy (PDT) suffers from the critical issues of low tissue-penetrating depth of light and potential phototoxicity, which are expected to be solved by developing new dynamic therapy-based therapeutic modalities such as sonodynamic therapy (SDT). In this work, we report on the design/fabrication of a high-performance multifunctional nanoparticulate sonosensitizer for efficient in vivo magnetic resonance imaging (MRI)-guided SDT against cancer. The developed approach takes the structural and compositional features of mesoporous organosilica-based nanosystems for the fabrication of sonosensitizers with intriguing theranostic performance...
January 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28024382/gold-nanoclustered-hyaluronan-nano-assemblies-for-photothermally-maneuvered-photodynamic-tumor-ablation
#18
Hwa Seung Han, Ki Young Choi, Hansang Lee, Minchang Lee, Jae Yoon An, Sol Shin, Seunglee Kwon, Doo Sung Lee, Jae Hyung Park
Optically active nanomaterials have shown great promise as a nanomedicine platform for photothermal or photodynamic cancer therapies. Herein, we report a gold-nanoclustered hyaluronan nanoassembly (GNc-HyNA) for photothermally boosted photodynamic tumor ablation. Unlike other supramolecular gold constructs based on gold nanoparticle building blocks, this system utilizes the nanoassembly of amphiphilic hyaluronan conjugates as a drug carrier for a hydrophobic photodynamic therapy agent verteporfin, a polymeric reducing agent, and an organic nanoscaffold upon which gold can grow...
December 27, 2016: ACS Nano
https://www.readbyqxmd.com/read/28024380/redox-activated-light-up-nanomicelle-for-precise-imaging-guided-cancer-therapy-and-real-time-pharmacokinetic-monitoring
#19
Xingang Liu, Min Wu, Qinglian Hu, Hongzhen Bai, Shuoqing Zhang, Youqing Shen, Guping Tang, Yuan Ping
Simultaneous tumor imaging, therapy, and pharmacokinetic monitoring can offer a safe and effective strategy for cancer therapy. This work describes the design of a fluorescence light-up nanomicelle that can afford precise imaging-guided drug delivery and pharmacokinetic monitoring in a real-time fashion for cancer chemotherapy. The nanomicelle, which contains a boron dipyrromethene based fluorescent probe as the hydrophobic core and a redox-triggered detachable poly(ethylene glycol) (PEG) shell, can accumulate at the tumor site via enhanced permeation and retention effect...
December 27, 2016: ACS Nano
https://www.readbyqxmd.com/read/28024156/designer-vaccine-nanodiscs-for-personalized-cancer-immunotherapy
#20
Rui Kuai, Lukasz J Ochyl, Keith S Bahjat, Anna Schwendeman, James J Moon
Despite the tremendous potential of peptide-based cancer vaccines, their efficacy has been limited in humans. Recent innovations in tumour exome sequencing have signalled the new era of personalized immunotherapy with patient-specific neoantigens, but a general methodology for stimulating strong CD8α(+) cytotoxic T-lymphocyte (CTL) responses remains lacking. Here we demonstrate that high-density lipoprotein-mimicking nanodiscs coupled with antigen (Ag) peptides and adjuvants can markedly improve Ag/adjuvant co-delivery to lymphoid organs and sustain Ag presentation on dendritic cells...
December 26, 2016: Nature Materials
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