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https://www.readbyqxmd.com/read/28729656/endolysosomal-targeting-of-a-clinical-chlorin-photosensitiser-for-light-triggered-delivery-of-nano-sized-medicines
#1
Elnaz Yaghini, Ruggero Dondi, Kunal M Tewari, Marilena Loizidou, Ian M Eggleston, Alexander J MacRobert
A major problem with many promising nano-sized biotherapeutics including macromolecules is that owing to their size they are subject to cellular uptake via endocytosis, and become entrapped and then degraded within endolysosomes, which can significantly impair their therapeutic efficacy. Photochemical internalisation (PCI) is a technique for inducing cytosolic release of the entrapped agents that harnesses sub-lethal photodynamic therapy (PDT) using a photosensitiser that localises in endolysosomal membranes...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28726546/nanotopographic-influence-on-the-in-vitro-behavior-of-induced-pluripotent-stem-cells
#2
Ji-Yun Ko, Hyun-Jik Oh, Jimin Lee, Gun-Il Im
While the influence of nanotopography on stem cell behavior have been extensively investigated on adult stem cells, far fewer studies have investigated the interaction of induced pluripotent stem cells (iPSC) with various nanotopographical patterns. The purpose of this study was to identify nanopatterns that can influence the stemness and proliferation as well as the adhesive properties in iPSCs, and thereby explore the feasibility of applying these nano-features for regenerative medicine. Three kinds of nanopatterns were fabricated from polydimethylsiloxane (PDMS) membranes, irregular patterned membrane (IPM), groove patterned membrane (GPM), and post patterned membrane (PPM), in addition to flat patterned membrane (FPM) which did not have any nanotopographic features and was used as the control pattern...
July 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28723615/nanoformulations-of-curcumin-an-emerging-paradigm-for-improved-remedial-application
#3
REVIEW
Meeta Gera, Neelesh Sharma, Mrinmoy Ghosh, Do Luong Huynh, Sung Jin Lee, Taesun Min, Taeho Kwon, Dong Kee Jeong
Curcumin is a natural polyphenol and essential curcuminoid derived from the rhizome of the medicinal plant Curcuma longa (L.) is universally acknowledged as "Wonder drug of life". It is a vital consumable and restorative herb, commonly keened for several ailments such as cancer, arthritis, pain, bruises, gastrointestinal quandaries, swelling and much more. Despite its enormous curative potential, the poor aqueous solubility and consequently, minimal systemic bioavailability with rapid degradation are some of the major factors which restrict the utilization of curcumin at medical perspective...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28721737/a-new-water-soluble-nano-micelle-through-self-assembly-pectin-curcumin-conjugates-preparation-characterization-and-anti-cancer-activity-evaluation
#4
Feng Bai, Jiajing Diao, Ying Wang, Shixin Sun, Hongmei Zhang, Yunyun Liu, Yanqing Wang, Jian Cao
Curcumin is a dominating active component of curcuma longa and has been studied widely because of its prominent biological activities. Extremely low aqueous solubility, stability and bioavailability of curcumin limits its application in the field of medicine. In this study, we developed pectin-curcumin (PEC-CCM) conjugates which could self-assemble water-soluble nano-micelles in aqueous solution. The structure of PEC-CCM conjugates was characterized by ultraviolet and visible spectra (UV-Vis), fluorescence spectra, Fourier transform infrared (FTIR) spectroscopy and 1H nuclear magnetic resonance (NMR) spectroscopy...
July 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28707589/advances-in-the-anticancer-value-of-the-ursolic-acid-through-nanodelivery
#5
Azadeh Manayi, Marjan Nikan, Navid Nobakht Haghighid, Mohammad Abdollahi
Ursolic acid, a natural pentacyclic triterpenoid is commonly found in plants and foods with promising biological and pharmacological activities. The compound has been under the attention of researchers due to its considerable anticancer effects through suppression of differentiation, angiogenesis, invasion, and metastasis of tumor cells via different pathways with low toxicity. Bioavailability of ursolic acid is poor due to poor solubility of the compound in water. Low bioavailability and short plasma half-life of ursolic acid along with non-specific distribution in the body are considered as impediments in the therapeutic development of the compound...
July 13, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28692416/immunoglobulin-g-n-glycans-as-potential-postgenomic-biomarkers-for-hypertension-in-the-kazakh-population
#6
Qing Gao, Mamatyusupu Dolikun, Jerko Štambuk, Hao Wang, Feifei Zhao, Nizam Yiliham, Youxin Wang, Irena Trbojević-Akmačić, Jie Zhang, Honghong Fang, Yang Sun, Hongli Peng, Zhongyao Zhao, Di Liu, Jiaonan Liu, Qihuan Li, Qi Sun, Lijuan Wu, Gordan Lauc, Wei Wang, Manshu Song
Next-generation (postgenomic) biomarkers from the nascent field of glycomics now offer fresh vistas for innovation in chronic disease biomarkers and system diagnostics in clinical medicine. Our previous work has shown an association between hypertension and immunoglobulin G (IgG) glycome composition, suggesting that individual variation in N-glycosylation of IgG might contribute to hypertension pathogenesis. The present study examined, for the first time to the best of our knowledge, the IgG N-glycans as potential biomarkers for hypertension in the Kazakh population...
July 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28678160/lipid-bilayer-membrane-in-a-silicon-based-micron-sized-cavity-accessed-by-atomic-force-microscopy-and-electrochemical-impedance-spectroscopy
#7
Muhammad Shuja Khan, Noura Sayed Dosoky, Darayas Patel, Jeffrey Weimer, John Dalton Williams
Supported lipid bilayers (SLBs) are widely used in biophysical research to probe the functionality of biological membranes and to provide diagnoses in high throughput drug screening. Formation of SLBs at below phase transition temperature (Tm) has applications in nano-medicine research where low temperature profiles are required. Herein, we report the successful production of SLBs at above-as well as below-the Tm of the lipids in an anisotropically etched, silicon-based micro-cavity. The Si-based cavity walls exhibit controlled temperature which assist in the quick and stable formation of lipid bilayer membranes...
July 5, 2017: Biosensors
https://www.readbyqxmd.com/read/28670118/species-specific-identification-of-collagen-components-in-colla-corii-asini-using-a-nano-liquid-chromatography-tandem-mass-spectrometry-proteomics-approach
#8
Xue Li, Feng Shi, Liping Gong, Baojian Hang, Daoyuan Li, Lianli Chi
Colla corii asini (CCA) is a protein-based traditional Chinese medicine made from donkey skins. Because it has the ability to nourish blood, its demand is increasing rapidly. The shortage of donkey skins increases the risk of the adulteration of CCA products with other animal skins. To ensure the drug efficacy and safety of CCA products, a proteomics technique was applied to reveal proteins in the skins of donkey, horse, cattle, and pig. Species-specific peptides for each animal species were predicted using bioinformatics, and their presence in the skins and gelatin samples was examined by nano-liquid chromatography-tandem mass spectrometry (nano-LC-MS/MS)...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28668043/luminescent-tunable-polydots-charge-effects-in-confined-geometry
#9
Sidath Wijesinghe, Sabina Maskey, Dvora Perahia, Gary S Grest
Long-lived soft nanoparticles, formed by conjugated polymers, constitute a new class of far-from-equilibrium responsive structures for nano-medicine. Tethering ionizable groups to the polymers enables functionality. However concurrently, the ionic groups perturb the delicate balance of interactions that governs these particles. Using fully atomistic molecular dynamics simulations, this study probed the effects of charged groups tethered to poly para phenylene ethynylene substituted by alkyl groups on the polymer conformation and dynamics in confined geometry...
June 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28667323/surface-engineering-for-mechanical-enhancement-of-cell-sheet-by-nano-coatings
#10
Miso Yang, Eunah Kang, Jong Wook Shin, Jinkee Hong
Cell sheet technology is becoming increasingly popular in tissue engineering and regenerative medicine, due to integrity into versatile organ and manageable cell and tissue type from the bank, and no needs of large volume organ for transplantation. Cell sheets have still a room to resolve the mechanical resistance under load-bearing occasion, easy translocation into organ, and prompt shape modulation for regular application in vivo. Herein, a layer-by-layer (LbL) assembly of nanometer scaled film coating method was introduced to inter-planar cell sheet for multilayered cell sheet (M1) and a single cell before sheet formation (M2)...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28647590/differences-in-the-coronal-proteome-acquired-by-particles-depositing-in-the-lungs-of-asthmatic-versus-healthy-humans
#11
Abhinav Kumar, Elif Melis Bicer, Paul Pfeffer, Marco P Monopoli, Kenneth A Dawson, Jonny Eriksson, Katarina Edwards, Steven Lynham, Matthew Arno, Annelie F Behndig, Anders Blomberg, Graham Somers, Dave Hassall, Lea Ann Dailey, Ben Forbes, Ian Mudway
Most inhaled nanomedicines in development are for the treatment of lung disease, yet little is known about their interaction with the respiratory tract lining fluids (RTLFs). Here we combined the use of nano-silica, as a protein concentrator, with label-free snapshot proteomics (LC-MS/MS; key findings confirmed by ELISA) to generate a quantitative profile of the RTLF proteome and provided insight into the evolved corona; information that may be used in future to improve drug targeting to the lungs by inhaled medicines...
June 22, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28629982/polymeric-nanoparticles-promising-platform-for-drug-delivery
#12
REVIEW
Khalid M El-Say, Hossam S El-Sawy
Nano medicine had viewed countless breakthroughs in drug delivery implementations. The main objective of nanotechnology application in delivering and carrying many promising therapeutics is to assure drugs carriage to their action sites, to maximize the pharmacological desired influence of remedies and to overcome their limitations and drawbacks that would hinder the required effectiveness. One of these applications was the particulates type of nano-range in size and tremendous impact in achievement. About this specific diversity of particulates, the different elaboration methodologies, mandatory and elementary components for design, and examples of splendid success stories for these particulates were emphasized in this humble review...
June 16, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28621931/tunable-surface-repellency-maintains-stemness-and-redox-capacity-of-human-mesenchymal-stem-cells
#13
Daniel A Balikov, Spencer W Crowder, Timothy C Boire, Jung Bok Lee, Mukesh K Gupta, Aidan M Fenix, Holley N Lewis, Caitlyn M Ambrose, Philip A Short, Chang Soo Kim, Dylan T Burnette, Matthew A Reilly, N Sanjeeva Murthy, Mi-Lan Kang, Won Shik Kim, Hak-Joon Sung
Human bone marrow derived mesenchymal stem cells (hMSCs) hold great promise for regenerative medicine due to their multipotent differentiation capacity and immunomodulatory capabilities. Substantial research has elucidated mechanisms by which extracellular cues regulate hMSC fate decisions, but considerably less work has addressed how material properties can be leveraged to maintain undifferentiated stem cells. Here, we show that synthetic culture substrates designed to exhibit moderate cell-repellency promote high stemness and low oxidative stress-two indicators of naïve, healthy stem cells-in commercial and patient-derived hMSCs...
July 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28618240/omics-for-precious-rare-biosamples-characterization-of-ancient-human-hair-by-a-proteomic-approach
#14
Margaux Fresnais, Pascale Richardin, Marcela Sepúlveda, Emmanuelle Leize-Wagner, Armelle Charrié-Duhaut
Omics technologies have far-reaching applications beyond clinical medicine. A case in point is the analysis of ancient hair samples. Indeed, hair is an important biological indicator that has become a material of choice in archeometry to study the ancient civilizations and their environment. Current characterization of ancient hair is based on elemental and structural analyses, but only few studies have focused on the molecular aspects of ancient hair proteins-keratins-and their conservation state. In such cases, applied extraction protocols require large amounts of raw hair, from 30 to 100 mg...
July 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28585624/exploiting-the-biomimetic-and-luminescence-properties-of-multivalent-dendrimer-semiconductor-nanohybrid-materials-in-the-ultra-low-level-determination-of-folic-acid
#15
Somashree Kundu, Susmita Maiti, Tushar Kanti Das, Debasmita Ghosh, Chandra Nath Roy, Abhijit Saha
In view of the enhanced generation of folate receptors in cancerous cells and diseases linked to the deficiency of folic acid, such as anemia, mental devolution, congenital malformation, etc., the development of a simple method for the ultra-sensitive determination of folic acid remains a long-standing issue for practical applications in medicine and biotechnology. Thus, the proposed luminescence based strategy involving multifunctional poly(amidoamine) (PAMAM) dendrimer encapsulated quantum dots (QDs) as a probe provides a simple, fast and efficient method for the selective determination of folic acid at the nano-molar level...
June 6, 2017: Analyst
https://www.readbyqxmd.com/read/28582711/biomedical-applications-of-green-synthesized-nobel-metal-nanoparticles
#16
Zia Ul Haq Khan, Amjad Khan, Yongmei Chen, Noor S Shah, Nawshad Muhammad, Arif Ullah Khan, Kamran Tahir, Faheem Ullah Khan, Behzad Murtaza, Sadaf Ul Hassan, Saeed Ahmad Qaisrani, Pingyu Wan
Synthesis of Nobel metal nanoparticles, play a key role in the field of medicine. Plants contain a substantial number of organic constituents, like phenolic compounds and various types of glycosides that help in synthesis of metal nanoparticles. Synthesis of metal nanoparticles by green method is one of the best and environment friendly methods. The major significance of the green synthesis is lack of toxic by-products produced during metal nanoparticle synthesis. The nanoparticles, synthesized by green method show various significant biological activities...
May 27, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28565781/design-and-implementation-of-fast-allergy-skin-test-detector-for-traditional-chinese-medicine-injections
#17
Ying Xiao, Yubin Zhao, Yanming Xie
Traditional Chinese medicine (TCM) injections are prepared from active substances extracted from TCMs and other natural medicines to establish scientific and technological methods, based on TCM hypotheses and experiences. A device was designed to provide a fast allergy skin test detector for TCM injections that could be applied to drugs of a single component or complex components. A novel fast allergy skin test detector for TCM injections was developed combining direct-current main, drug solution permeation devices of various shape that were compatible with the skin test electrode, nano-sponge patch adsorption, and flexible liposome coverage technologies with high-amplitude pulse...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28558645/editorial-recent-contributions-of-medicinal-chemistry-to-nano-drug-delivery-systems-and-bio-conjugates
#18
EDITORIAL
Fatemeh Bahadori
No abstract text is available yet for this article.
2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28545183/therapeutic-potential-of-novel-nano-based-curcumin-compounds-in-vitro-and-in-vivo
#19
Homa Mollaei, Esmaeil Babaei
Despite recent advances in cancer medication, malignant tumors continue to be the second leading cause of death worldwide. Furthermore, introducing a therapeutic compound with low-side effects as well as low-price for consumers is controversial. Recent efforts have been focusing on traditional medicines as a rich source of herbal agents. Curcumin, the major turmeric phytochemical, has been widely assessed as an anti-cancer compound in vitro and in vivo. However, the use of curcumin in cancer treatment has limitations because of its low solubility, poor tissue absorption, rapid metabolism and rapid systemic elimination...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28541438/interlinked-dna-nano-circles-for-measuring-topoisomerase-ii-activity-at-the-level-of-single-decatenation-events
#20
Emil L Kristoffersen, Asger Givskov, Line A Jørgensen, Pia W Jensen, Jo Ann W Byl, Neil Osheroff, Anni H Andersen, Magnus Stougaard, Yi-Ping Ho, Birgitta R Knudsen
DNA nano-structures present appealing new means for monitoring different molecules. Here, we demonstrate the assembly and utilization of a surface-attached double-stranded DNA catenane composed of two intact interlinked DNA nano-circles for specific and sensitive measurements of the life essential topoisomerase II (Topo II) enzyme activity. Topo II activity was detected via the numeric release of DNA nano-circles, which were visualized at the single-molecule level in a fluorescence microscope upon isothermal amplification and fluorescence labeling...
May 24, 2017: Nucleic Acids Research
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