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https://www.readbyqxmd.com/read/29334272/extracellular-vesicle-mimetic-nanovesicles-transport-lncrna-h19-as-competing-endogenous-rna-for-the-treatment-of-diabetic-wounds
#1
Shi-Cong Tao, Bi-Yu Rui, Qi-Yang Wang, Ding Zhou, Yang Zhang, Shang-Chun Guo
Diabetic wounds, one of the most enervating complications of diabetes mellitus, affect millions of people worldwide annually. Vascular insufficiency, caused by hyperglycemia, is one of the primary causes and categories of diabetic impaired wound healing. Recently, long noncoding RNA (LncRNA)-H19, which is significantly decreased in diabetes and may be crucial in triggering angiogenesis, has attracted increasing interest. The possible relationship between the decrease of LncRNA-H19 and the impairment of angiogenesis in diabetes could involve impairment of the insulin-phosphatidylinositol 3-kinase (PI3K)-Akt pathway via the interdiction of LncRNA-H19...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29332842/ligand-cascading-nano-delivery-devices-to-enable-multiscale-targeting-of-anti-neurodegenerative-therapeutics
#2
Adam Mullis, Benjamin William Schlichtmann, Balaji Narasimhan, Rebecca Cademartiri, Surya K Mallapragada
Neurodegenerative diseases are a debilitating set of conditions that affect a significant fraction of the world's population, and this fraction is expected to increase as the population ages. Many therapeutic strategies have been explored to treat the pathological mechanisms of neurodegenerative disease, but multiple sequential hurdles to central nervous system delivery, including the blood-brain barrier, diseased neuronal membranes, and the organelle barrier, make drug delivery challenging and necessitate the use of innovative strategies to target and cross each barrier...
January 15, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29332574/biomacromolecular-based-fibers-in-nanomedicine-a-combination-of-drug-delivery-and-tissue-engineering
#3
Elham Arkan, Abbas Hemati Azandaryani, Pouran Moradipour, Leila Behbood
BACKGROUND: Biopolymers based materials (polysaccharides, lipids, proteins, and nucleic acids) are one of the basic resources in bio-engineering sciences because of desirable features. Moreover, nanobiotechnology innovates nanomaterial and associated technique in nano medicine (drug delivery and tissue engineering). METHODS: In the nano-medicine, fibers are introduced as a successful biomimetic extracellular matrix scaffolds and drug carrier systems. Electrospinning as a simple and cost-effective technique is used to design nanofibers...
January 12, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29327746/silk-nanoparticles-from-inert-supports-to-bioactive-natural-carriers-for-drug-delivery
#4
REVIEW
Barbara Crivelli, Sara Perteghella, Elia Bari, Milena Sorrenti, Giuseppe Tripodo, Theodora Chlapanidas, Maria Luisa Torre
Silk proteins have been studied and employed for the production of drug delivery (nano)systems. They show excellent biocompatibility, controllable biodegradability and non-immunogenicity and, if needed, their properties can be modulated by blending with other polymers. Silk fibroin (SF), which forms the inner core of silk, is a (bio)material officially recognized by the Food and Drug Administration for human applications. Conversely, the potential of silk sericin (SS), which forms the external shell of silk, could still be considered under evaluation...
January 12, 2018: Soft Matter
https://www.readbyqxmd.com/read/29327399/plga-mpeg-nanoparticles-loaded-with-melatonin-protect-adipose-derived-stem-cells-transplanted-in-infarcted-heart-tissue
#5
Qiang Ma, Junjie Yang, Xu Huang, Weisheng Guo, Sulei Li, Hao Zhou, Jingwei Li, Yundai Chen
Stem cell transplantation is a promising therapeutic strategy for myocardial infarction. However, transplanted cells face low survival rates due to oxidative stress and the inflammatory microenvironment in ischemic heart tissue. Melatonin has been used as a powerful endogenous antioxidant to protect cells from oxidative injury. However, melatonin cannot play a long lasting effect against the hostile microenvironment. Nano drug delivery carriers have the ability to protect the loaded drug from degradation in physiological environments in a controlled manner, which results in longer effects and decreased side effects...
January 12, 2018: Stem Cells
https://www.readbyqxmd.com/read/29327259/5-aminolevulinic-acid-squalene-nanoassemblies-for-tumor-photodetection-and-therapy-in-vitro-studies
#6
Andrej Babič, V Herceg, E Bastien, H-P Lassalle, L Bezdetnaya, Norbert Lange
Protoporphyrin IX (PpIX) as natural photosensitizer derived from administration of 5-aminolevulinic acid (5-ALA) has found clinical use for photodiagnosis and photodynamic therapy of several cancers. However, broader use of 5-ALA in oncology is hampered by its charge and polarity that result in its reduced capacity for passing biological barriers and reaching the tumor tissue. Advanced drug delivery platforms are needed to improve the biodistribution of 5-ALA. Here, we report a new approach for the delivery of 5-ALA...
January 11, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29325511/recent-advances-in-topical-nano-drug-delivery-systems-for-the-anterior-ocular-segment
#7
Prit Lakhani, Akash Patil, Soumyajit Majumdar
Over the past decade, there has been a rise in the number of clinical cases of moderate to severe anterior segment ocular diseases. Conventional topical ophthalmic formulations have several limitations - to address which, novel drug-delivery systems are needed. Additionally, formidable physiological barriers limit ocular bioavailability through the topical route of application. During the last decade, various nano-scaled ocular drug-delivery strategies have been reported. Some of these exploratory, topical, noninvasive approaches have shown promise in improving penetration into the anterior segment tissues of the eye...
February 2018: Therapeutic Delivery
https://www.readbyqxmd.com/read/29319137/a-study-on-drug-delivery-tracing-with-radiolabeled-mesoporous-hydroxyapatite-nanoparticles-conjugated-with-2dg-dox-for-breast-tumor-cells
#8
Mahdiyeh Shamsi, Jafar Majidi Zolbanin, Babak Mahmoudian, Naime Majidi Zolbanin, Leili Aghebati Maleki, Mohammad Asghari Jafarabadi, Jalil Pirayesh Islamian
BACKGROUND: Mesoporous nanoparticles have a great potential in targeted therapy approaches due to their ideal properties for encapsulation of various drugs, proteins and also biologically active molecules. MATERIAL AND METHODS: We used mesoporous hydroxyapatite (HA) nanoparticles as a drug carrier and developed radiolabeled mesoporous HA containing of 2-deoxy-D-glucose (2DG) and Doxorubicin (DOX) with technetium-99m (99mTc) for imaging in in vitro and in vivo studies...
January 10, 2018: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/29317344/redox-responsive-micelles-from-disulfide-bond-bridged-hyaluronic-acid-tocopherol-succinate-for-the-treatment-of-melanoma
#9
Junping Xia, Yunai Du, Liping Huang, Birendra Chaurasiya, Jiaheng Tu, Thomas J Webster, Chunmeng Sun
Nanotechnology-based chemotherapy is efficient in cancer treatment due to the targeted delivery of small molecules via nano-carriers, which are usually regarded as "inert". However, nano-materials are more preferred as carriers since many cause synergistic anti-tumor effects along with the drug cargo. In this study, a "bioactive" tocopherol succinate (TOS) was grafted to hyaluronic acid (HA) via of disulfide bonds to obtain HA-ss-TOS conjugates which can assemble into nano-micelles but dissociate when exposed to reducing environments in vitro and in vivo...
January 6, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29317204/doxorubicin-and-rhein-loaded-nanomicelles-attenuates-multidrug-resistance-in-human-ovarian-cancer
#10
Na-Na Han, Xia Li, Ling Tao, Qi Zhou
Tumor targeting delivery system has been suggested as an attractive strategy against tumor progression. Combination chemotherapy is essential and effective in preventing ovarian cancer. Rhein (4, 5-dihydroxyanthraquinone-2-carboxylic acid) is a lipophilic anthraquinone. Emerging evidence indicates that rhein has many pharmacological effects, such as nephroprotective, hepatoprotective, anti-inflammatory, antioxidant, and anticancer activities. In our study, doxorubicin (DOX) and rhein (RHE) co-loaded polymeric micelle (nano-DOX/RHE) were prepared to attenuate drug resistance in ovarian cancer cells while promoting the therapeutic efficiency of DOX...
January 6, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29314760/preparation-of-an-injectable-doxorubicin-surface-modified-cellulose-nanofiber-gel-and-evaluation-of-its-anti-tumor-and-anti-metastasis-activity-in-melanoma
#11
Najmeh Alizadeh, Vajihe Akbari, Maryam Nurani, Azade Taheri
Cellulose nanofibers (Cel-NFs) gel can be considered as a useful drug carrier because of its biocompatibility, high specific surface area and high loading capacity of drugs. Injectable Cel-NFs gel could deliver doxorubicin (DOX) for localized chemotherapy of melanoma and suppress melanoma cells migration because of the physical barrier property of Cel-NFs. We prepared DOX surface modified Cel-NFs (DOX-Cel-NFs) gel by the electrostatic attachment of DOX molecules on the surface of Cel-NFs. The increase in the zeta potential of nanofibers and the changes in the FTIR spectra of DOX-Cel-NFs compared to Cel-NFs proved this attachment...
January 5, 2018: Biotechnology Progress
https://www.readbyqxmd.com/read/29304403/targeting-death-receptors-for-drug-resistant-cancer-therapy-codelivery-of-ptrail-and-monensin-using-dual-targeting-and-stimuli-responsive-self-assembling-nanocomposites
#12
Fan Xu, Huihai Zhong, Ya Chang, Dongdong Li, Hongyue Jin, Meng Zhang, Huiyuan Wang, Chen Jiang, Youqing Shen, Yongzhuo Huang
Chemoresistance remains a formidable hurdle against cancer therapy. Seeking for novel therapy strategies is an urgent need for those who no longer benefit from chemotherapy. Chemoresistance is usually associated with the dysfunction of intrinsic apoptosis. Targeting extrinsic apoptosis via TRAIL signaling and the death receptors could be a potential solution to treat chemoresistant cancer. A highly biocompatible nano system for codelivery of the TRAIL DNA and the death receptor sensitizer monensin was developed, in which low-molecular-weight PEI (LMW-PEI) was crosslinked by the sulfhydryl cyclodextrin via disulfide bonds, and then bound with DNA, thus forming the bioreducible polyplex cores...
December 22, 2017: Biomaterials
https://www.readbyqxmd.com/read/29301792/therapy-educated-mesenchymal-stem-cells-enrich-for-tumor-initiating-cells
#13
Michael Timaner, Nitzan Letko-Khait, Ruslana Kotsofruk, Madeleine Benguigui, Ofrat Beyar-Katz, Chen Rachman-Tzemach, Ziv Raviv, Tomer Bronshtein, Marcelle Machluf, Yuval Shaked
Stromal cells residing in the tumor microenvironment contribute to the development of therapy resistance. Here we show that chemotherapy-educated mesenchymal stem cells (MSCs) promote therapy resistance via crosstalk with tumor-initiating cells (TICs), a resistant tumor cell subset that initiates tumorigenesis and metastasis. In response to gemcitabine chemotherapy, MSCs colonized pancreatic adenocarcinomas in large numbers and resided in close proximity to TICs. Furthermore, gemcitabine-educated MSCs promoted the enrichment of TICs in vitro and enhance tumor growth in vivo...
January 4, 2018: Cancer Research
https://www.readbyqxmd.com/read/29301191/cytotoxic-apoptotic-and-genotoxic-effects-of-lipid-based-and-polymeric-nano-micelles-an-in-vitro-evaluation
#14
Fatemeh Bahadori, Abdurrahim Kocyigit, Hayat Onyuksel, Aydan Dag, Gulacti Topcu
Self-assembly systems (SAS) mainly consist of micelles, and liposomes are the classes of Nano Drug Delivery Systems with superior properties compared to traditional therapeutics in targeting cancer tumors. All commercially available nano-formulations of chemotherapeutics currently consist of SAS. According to our knowledge, a specific toxicity comparison based on material differences has not yet been performed. The purpose of this study was to evaluate and compare the toxicity of two SAS consisting of Sterically Stabilized Micelles (SSM) made of a lipid-based amphiphilic distearoyl-sn-glycero-phosphatidylethanolamine-polyethylene glycol (PEG)-2000 and a polymeric micelle (PM) consisting of Y-shape amphiphilic block copolymer, synthesized using poly ε-caprolactone and PEG...
December 30, 2017: Toxics
https://www.readbyqxmd.com/read/29298656/pre-clinical-validation-of-mito-targeted-nano-engineered-flavonoids-isolated-from-selaginella-bryopteris-sanjeevani-as-a-novel-cancer-prevention-strategy
#15
Arpit Bhargava, Neelam Pathak, Sriram Seshadri, Neha Bunkar, Subodh Kumar Jain, Dinesh Mishra Kumar, Nirmal Kumar Lohiya, Pradyumna Kumar Mishra
BACKGROUND: Novel bioactive plant secondary metabolites, including flavonoids, offer a spectrum of chemo-protective responses against a range of human tumor models. However, the clinical translation of these promising anti-cancer agents has been hindered largely by their poor solubility, rapid metabolism, or a combination of both, ultimately resulting in poor bioavailability upon oral administration. OBJECTIVE: To circumvent the challenges associated with herbal drug development and for effective integration into clinical setting, nano-engineering is one of the emerging pragmatic strategy which has promise to deliver therapeutic concentrations of bio-actives upon oral administration...
December 29, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29295545/functionalization-of-cotton-fabrics-with-polycaprolactone-nanoparticles-for-transdermal-release-of-melatonin
#16
Daniele Massella, Federica Leone, Roberta Peila, Antonello A Barresi, Ada Ferri
Drug delivery by means of transdermal patches raised great interest as a non-invasive and sustained therapy. The present research aimed to design a patch for transdermal delivery of melatonin, which was encapsulated in polycaprolactone (PCL) nanoparticles (NPs) by employing flash nanoprecipitation (FNP) technique. Melatonin-loaded PCL nanoparticles were successfully prepared with precise control of the particle size by effectively tuning process parameters. The effect of process parameters on the particle size was assessed by dynamic light scattering for producing particles with suitable size for transdermal applications...
December 24, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29288359/nano-formulation-for-topical-treatment-of-precancerous-lesions-skin-penetration-in-vitro-and-in-vivo-toxicological-evaluation
#17
Maria Natalia Calienni, Carlos Facundo Temprana, Maria Jimena Prieto, Donatella Paolino, Massimo Fresta, Ayse Begum Tekinay, Silvia Del Valle Alonso, Jorge Montanari
With the aim of improving the topical delivery of the antineoplastic drug 5-fluorouracil (5FU), it was loaded into ultradeformable liposomes composed of soy phosphatidylcholine and sodium cholate (UDL-5FU). The liposome populations had a mean size of 70 nm without significant changes in 56 days, and the ultradeformable formulations were up to 324-fold more elastic than conventional liposomes. The interaction between 5FU and the liposomal membrane was studied by three methods, and also release profile was obtained...
December 30, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29287930/ptl401-a-new-formulation-based-on-pro-nano-dispersion-technology-improves-oral-cannabinoids-bioavailability-in-healthy-volunteers
#18
Jacob Atsmon, Irina Cherniakov, Dvora Izgelov, Amnon Hoffman, Abraham J Domb, Lisa Deutsch, Frederic Deutsch, Daphna Heffetz, Hagit Sacks
There is growing clinical interest in developing and commercializing pharmaceutical-grade cannabinoid products, containing primarily tetrahydrocannabinol (THC) and cannabidiol (CBD). The oral bioavailability of THC and CBD is very low due to extensive "first pass" metabolism. A novel oral THC and CBD formulation, PTL401, utilizing an advanced self-emulsifying oral drug delivery system, was designed to circumvent the "first pass" effect. In this study, the bioavailability of THC and CBD from the PTL401 capsule was compared with similar doses from a marketed reference oromucosal spray (Sativex®)...
December 26, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29285401/multifunctional-stimuli-responsive-polymer-gated-iron-and-gold-embedded-silica-nano-golf-balls-nanoshuttles-for-targeted-on-demand-theranostics
#19
Liping Wang, Grace Jang, Deependra Kumar Ban, Vrinda Sant, Jay Seth, Sami Kazmi, Nirav Patel, Qingqing Yang, Joon Lee, Woraphong Janetanakit, Shanshan Wang, Brian P Head, Gennadi Glinsky, Ratneshwar Lal
Multi-functional nanoshuttles for remotely targeted and on-demand delivery of therapeutic molecules and imaging to defined tissues and organs hold great potentials in personalized medicine, including precise early diagnosis, efficient prevention and therapy without toxicity. Yet, in spite of 25 years of research, there are still no such shuttles available. To this end, we have designed magnetic and gold nanoparticles (NP)-embedded silica nanoshuttles (MGNSs) with nanopores on their surface. Fluorescently labeled Doxorubicin (DOX), a cancer drug, was loaded in the MGNSs as a payload...
2017: Bone Research
https://www.readbyqxmd.com/read/29285282/a-green-and-facile-preparation-approach-licochalcone-a-capped-on-hollow-gold-nanoparticles-for-improving-the-solubility-and-dissolution-of-anticancer-natural-product
#20
Yi-Wei Sun, Li-Hong Wang, Da-Li Meng, Xin Che
This study described a valuable drug delivery system for poorly water-soluble anticancer naturalproduct, licochalcone A, isolated from Glycyrrhiza inflata, loaded on hollow gold nanoparticles by green method to improve solubility and dissolution and maintain its natural pharmacological property. Briefly, the formation of hollow gold nanoparticles involves three steps: preparing of silica nanospheres by Stober method, forming of a thick gold shell around the silica templates and etching of silica particles by HF solution...
December 1, 2017: Oncotarget
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