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Nanomedicine nanotechnology

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https://www.readbyqxmd.com/read/28078952/recent-advances-in-green-nanoparticulate-systems-for-drug-delivery-efficient-delivery-and-safety-concern
#1
Pik-Ling Lam, Wai-Yeung Wong, Zhaoxiang Bian, Chung-Hin Chui, Roberto Gambari
Nanotechnology manipulates therapeutic agents at the nanoscale for the development of nanomedicines. However, there are current concerns over nanomedicines, mainly related to the possible toxicity of nanomaterials used for health medications. Due to their small size, they can enter the human body more readily than larger sized particles. Green chemistry encompasses the green synthesis of drug-loaded nanoparticles by reducing the use of hazardous materials in the synthesis process, thus reducing the adverse health impacts of pharmaceutics...
January 12, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28078770/synthetic-plant-virology-for-nanobiotechnology-and-nanomedicine
#2
REVIEW
John F C Steele, Hadrien Peyret, Keith Saunders, Roger Castells-Graells, Johanna Marsian, Yulia Meshcheriakova, George P Lomonossoff
Nanotechnology is a rapidly expanding field seeking to utilize nano-scale structures for a wide range of applications. Biologically derived nanostructures, such as viruses and virus-like particles (VLPs), provide excellent platforms for functionalization due to their physical and chemical properties. Plant viruses, and VLPs derived from them, have been used extensively in biotechnology. They have been characterized in detail over several decades and have desirable properties including high yields, robustness, and ease of purification...
January 11, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28076938/transmission-electron-microscopy-for-nanomedicine-novel-applications-for-long-established-techniques
#3
Manuela Malatesta
During the last twenty years, the research in nanoscience and nanotechnology has dramatically increased and, in the last decade, the interest has progressively been oriented towards biomedical applications, giving rise to a new field termed nanomedicine. Transmis - sion electron microscopy is a valuable technique not only for the thorough physico-chemical characterization of newly synthesized nanoparticulates, but especially to explore the effects of nanocomposites on biological systems, providing essential information for the development of efficient therapeutic and diagnostic strategies...
December 9, 2016: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28064006/versatile-rna-tetra-u-helix-linking-motif-as-a-toolkit-for-nucleic-acid-nanotechnology
#4
My N Bui, M Brittany Johnson, Mathias Viard, Emily Satterwhite, Angelica N Martins, Zhihai Li, Ian Marriott, Kirill A Afonin, Emil F Khisamutdinov
RNA nanotechnology employs synthetically modified ribonucleic acid (RNA) to engineer highly stable nanostructures in one, two, and three dimensions for medical applications. Despite the tremendous advantages in RNA nanotechnology, unmodified RNA itself is fragile and prone to enzymatic degradation. In contrast to use traditionally modified RNA strands e.g. 2'-fluorine, 2'-amine, 2'-methyl, we studied the effect of RNA/DNA hybrid approach utilizing a computer-assisted de novo RNA tetra-uracil (tetra-U) motif as a toolkit to address questions related to assembly efficiency, versatility, stability, and the production costs of hybrid RNA/DNA nanoparticles...
January 4, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28063356/nanoparticles-for-radiooncology-mission-vision-challenges
#5
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/28057522/nanomedicines-for-dysfunctional-macrophage-associated-diseases
#6
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/28042778/personalized-nanoparticles-for-cancer-therapy-a-call-for-greater-precision
#7
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/28026115/immune-cell-mediated-biodegradable-theranostic-nanoparticles-for-melanoma-targeting-and-drug-delivery
#8
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
#9
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/28017157/nanocarriers-for-effective-brain-drug-delivery
#10
Tansel Comogluat, Sema Arisoy, Zeynep Burcu Akkus
Drug delivery to the brain is an engaged research topic in the field of nanomedicine. The passage of therapeutics into the brain parenchyma is more complicated than other body tissues due to it is limited by restrict barrier structure called blood-brain barrier (BBB). Nanotechnology holds great promise to overcome the BBB and thereby enable treatment of neurodegenerative diseases. Nanocarriers have been investigated several times as effective brain drug delivery systems in the past few decades. Physicochemical properties and surface modifications of these carriers play a significant role in terms of brain up-taking of nanocarriers...
December 21, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28011382/multiple-sclerosis-therapeutic-applications-of-advancing-drug-delivery-systems
#11
REVIEW
Sanam Dolati, Zohreh Babaloo, Farhad Jadidi-Niaragh, Hormoz Ayromlou, Sanam Sadreddini, Mehdi Yousefi
Multiple sclerosis (MS) is an inflammatory autoimmune disease of the central nervous system, which is accompanying with demyelination, neurodegeneration and sensibility to oxidative stress. In MS, auto-reactive lymphocytes cross the blood-brain barrier (BBB) and reside in the perivenous demyelinating lesions which create various distinct inflammatory demyelinated plaques situated predominantly in the white matter. The current MS-related therapeutic approaches can be classified into disease-modifying therapies (DMTs) and symptomatic therapy...
December 20, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28008254/rehmannia-glutinosa-polysaccharide-liposome-as-a-novel-strategy-for-stimulating-an-efficient-immune-response-and-their-effects-on-dendritic-cells
#12
Yee Huang, Tao Qin, Yifan Huang, Zhenguang Liu, Ruonan Bo, Yuanliang Hu, Jiaguo Liu, Yi Wu, Deyun Wang
Nanomedicine, the medical application of nanotechnology, promises a seemingly limitless range of applications from drug delivery to adjuvants and therapeutics. Our current research is focused on natural polymer-based liposome adjuvants. With the aim of inducing protective and long-lasting immunity, the immunological adjuvant activity of Rehmannia glutinosa polysaccharide liposome (RGPL) was investigated. In vivo, the splenic lymphocyte proliferation ratios and ovalbumin-specific immunoglobulin G titers of ovalbumin-RGPL-vaccinated mice were significantly upregulated...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27987688/liposome-based-drug-co-delivery-systems-in-cancer-cells
#13
REVIEW
Sepideh Zununi Vahed, Roya Salehi, Soodabeh Davaran, Simin Sharifi
Combination therapy and nanotechnology offer a promising therapeutic method in cancer treatment. By improving drug's pharmacokinetics, nanoparticulate systems increase the drug's therapeutic effects while decreasing its adverse side effects related to high dosage. Liposomes are extensively used as drug delivery systems and several liposomal nanomedicines have been approved for clinical applications. In this regard, liposome-based combination chemotherapy (LCC) opens a novel avenue in drug delivery research and has increasingly become a significant approach in clinical cancer treatment...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27973767/new-advances-in-nanotechnology-based-diagnosis-and-therapeutics-for-breast-cancer-an-assessment-of-active-targeting-inorganic-nanoplatforms
#14
Priscila Falagan-Lotsch, Elissa M Grzincic, Catherine J Murphy
Breast cancer is a major cause of suffering and mortality among women. Limitations in the current diagnostic methods and treatment approaches have led to new strategies to positively impact the survival rates and quality of life of breast cancer patients. Nanotechnology offers a real possibility to mitigate breast cancer mortality by early-stage cancer detection, more precise diagnosis, as well as more effective treatments with minimal side effects. The current nanoplatforms approved for breast cancer therapeutics are based on passive tumor targeting using organic nanoparticles and have not provided the expected significant improvements in the clinic...
December 15, 2016: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/27966988/docetaxel-loaded-plga-nanoparticles-improve-efficacy-in-taxane-resistant-triple-negative-breast-cancer
#15
Charles J Bowerman, James D Byrne, Kevin S Chu, Allison N Schorzman, Amanda W Keeler, Candice A Sherwood, Jillian L Perry, James C Luft, David B Darr, Allison M Deal, Mary E Napier, William C Zamboni, Norman E Sharpless, Charles M Perou, Joseph M DeSimone
Novel treatment strategies, including nanomedicine, are needed for improving management of triple-negative breast cancer. Patients with triple-negative breast cancer, when considered as a group, have a worse outcome after chemotherapy than patients with breast cancers of other subtypes, a finding that reflects the intrinsically adverse prognosis associated with the disease. The aim of this study was to improve the efficacy of docetaxel by incorporation into a novel nanoparticle platform for the treatment of taxane-resistant triple-negative breast cancer...
December 22, 2016: Nano Letters
https://www.readbyqxmd.com/read/27912846/new-insights-and-evolving-role-of-pegylated-liposomal-doxorubicin-in-cancer-therapy
#16
REVIEW
Alberto A Gabizon, Yogita Patil, Ninh M La-Beck
We herein review various pharmacological and clinical aspects of pegylated liposomal doxorubicin (PLD), the first nanomedicine to be approved for cancer therapy, and discuss the gap between its potent antitumor activity in preclinical studies and its comparatively modest achievements in clinical studies and limited use in clinical practice. PLD is a complex formulation of doxorubicin based on pharmaceutical nanotechnology with unique pharmacokinetic and pharmacodynamic properties. Its long circulation time with stable retention of the payload and its accumulation in tumors with high vascular permeability both result in important advantages over conventional chemotherapy...
November 2016: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/27863668/nanotechnologies-for-the-treatment-of-colon-cancer-from-old-drugs-to-new-hope
#17
Larissa Kotelevets, Eric Chastre, Didier Desmaële, Patrick Couvreur
Colorectal cancer is a wide-reaching health problem due to its incidence and to the high mortality rates. Adjuvant chemotherapies have considerably improved the prognosis and/or the overall survival of patients with locally advanced and metastatic cancers. Nevertheless, their efficiency remains limited due to intrinsic and emerging multidrug resistance (MDR) of cancer cells, and to major adverse effects and dose limiting toxicities. The present review discusses the knowledge of clinically relevant mechanisms of resistance to cytotoxic and targeted therapies for the treatment of colorectal cancer, and focuses on the benefit of nanomedicine approach to circumvent these processes...
November 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27858045/droplet-microfluidics-towards-the-assembly-of-advanced-building-blocks-in-cell-mimicry
#18
Ana Armada-Moreira, Essi Taipaleenmäki, Fabian Itel, Yan Zhang, Brigitte Städler
Therapeutic cell mimicry is an approach in nanomedicine aiming at substituting for missing or lost cellular functions employing nature-inspired concepts. Pioneered decades ago, only now is this technology empowered with the arsenal of nanotechnological tools and ready to provide radically new solutions such as assembling synthetic organelles and artificial cells. One of these tools is droplet microfluidics (D-μF), which provides the flexibility to generate cargo-loaded particles with tunable size and shape in a fast and reliable manner, an essential requirement in cell mimicry...
December 1, 2016: Nanoscale
https://www.readbyqxmd.com/read/27834398/cancer-nanomedicine-progress-challenges-and-opportunities
#19
Jinjun Shi, Philip W Kantoff, Richard Wooster, Omid C Farokhzad
The intrinsic limits of conventional cancer therapies prompted the development and application of various nanotechnologies for more effective and safer cancer treatment, herein referred to as cancer nanomedicine. Considerable technological success has been achieved in this field, but the main obstacles to nanomedicine becoming a new paradigm in cancer therapy stem from the complexities and heterogeneity of tumour biology, an incomplete understanding of nano-bio interactions and the challenges regarding chemistry, manufacturing and controls required for clinical translation and commercialization...
January 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/27826368/native-and-reconstituted-plasma-lipoproteins-in-nanomedicine-physicochemical-determinants-of-nanoparticle-structure-stability-and-metabolism
#20
Henry J Pownall, Corina Rosales, Baiba K Gillard, Mauro Ferrari
Although many acute and chronic diseases are managed via pharmacological means, challenges remain regarding appropriate drug targeting and maintenance of therapeutic levels within target tissues. Advances in nanotechnology will overcome these challenges through the development of lipidic particles, including liposomes, lipoproteins, and reconstituted high-density lipoproteins (rHDL) that are potential carriers of water-soluble, hydrophobic, and amphiphilic molecules. Herein we summarize the properties of human plasma lipoproteins and rHDL, identify the physicochemical determinants of lipid transfer between phospholipid surfaces, and discuss strategies for increasing the plasma half-life of lipoprotein- and liposome-associated molecules...
September 2016: Methodist DeBakey Cardiovascular Journal
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