Nanobiotechnology
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Nanotechnology in Drug Delivery: the Need for More Cell Culture Based
Kura et al. Chemistry Central Journal 2014, 8:46 http://journal.chemistrycentral.com/content/8/1/46 MINI REVIEW Open Access Nanotechnology in drug delivery: the need for more cell culture based studies in screening Aminu Umar Kura1, Sharida Fakurazi1,2*, Mohd Zobir Hussein3 and Palanisamy Arulselvan1 Abstract Advances in biomedical science are leading to upsurge synthesis of nanodelivery systems for drug delivery. The systems were characterized by controlled, targeted and sustained drug delivery ability. Humans are the target of these systems, hence, animals whose systems resembles humans were used to predict outcome. Thus, increasing costs in money and time, plus ethical concerns over animal usage. However, with consideration and planning in experimental conditions, in vitro pharmacological studies of the nanodelivery can mimic the in vivo system. This can function as a simple method to investigate the effect of such materials without endangering animals especially at screening phase. Keywords: In vitro, Animal studies, Nanodelivery system, Toxicity and bio distribution Introduction However, with changes and improvement in drug de- Nanodelivery system (NDS) is a branch of Nanomedicine livery via NDS comes a price (possible toxic effect), the characterized by controlled, targeted and sustained drug evaluation of which is important before any biological delivery ability, a limitation and drawback that is currently application can be introduce. In 2004, the term nanotoxi- limiting conventional drug delivery system especially city was coined; referring to the study of the potential in drug delivery to tight areas like the brain [1]. NDS, toxic impacts of nanoparticles on biological and ecological due to their small sizes usually below 100 nm and systems [5]. -
Food Produced Using Animal Cell Culture Technology (07/12/2018) Page 1
Food Produced Using Animal Cell Culture Technology (07/12/2018) Page 1 U.S. FOOD & DRUG ADMINISTRATION OFFICE OF FOODS AND VETERINARY MEDICINE CENTER FOR FOOD SAFETY & APPLIED NUTRITION FDA Public Meeting: Foods Produced Using Animal Cell Culture Technology Docket No. FDA-2018-N-2155 Harvey W. Wiley Federal Building - Auditorium 5001 Campus Drive College Park, MD 20740 Thursday, July 12, 2018 Reported by: Natalia Thomas, Capital Reporting Company Food Produced Using Animal Cell Culture Technology (07/12/2018) Page 2 A P P E A R A N C E S Jessica Almy The Good Food Institute Kari Barrett Advisor for Strategic Communications and Public Engagement, Office of Food and Veterinary Medicine, FDA Danielle Beck National Cattlemen's Beef Association Dustin Boler, PhD American Meat Science Association Benjamina Bollag Higher Steaks Beth Briczinski, PhD National Milk Producers Federation Lou Cooperhouse BlueNalu Isha Datar Executive Director, New Harvest Jeremiah Fasano Consumer Safety Officer, Division of Biotechnology and GRAS Notice Review, Office of Food Additive Food Produced Using Animal Cell Culture Technology (07/12/2018) Page 3 A P P E A R A N C E S Safety, Center for Food Safety and Applied Nutrition, FDA Scott Gottlieb, MD Commissioner, FDA Michael Hansen, PhD Consumers Union Gregory Jaffe Director, Project on Biotechnology, Center for Science in the Public Interest William Jones, PhD Acting Director, Office of Food Safety, Center for Food Safety and Applied Nutrition, FDA Kate Krueger, PhD New Harvest Tiffany Lee, DVM North American Meat Institute Peter Licari Chief Technology Officer, JUST Susan Mayne, PhD Director, Center for Food Safety and Applied Nutrition, FDA Food Produced Using Animal Cell Culture Technology (07/12/2018) Page 4 A P P E A R A N C E S Paul McCright, PhD Biotrack Diagnostics, Inc. -
Challenges for Nanomechanics of Biological Systems
NNI Interagency Workshop : Instrumentation and Metrology for Nanotechnology Grand Challenge Workshop National Institute of Standards and Technology, Gaithersburg, MD Jan 27-29, 2004 Challenges for Nanomechanics of Biological Systems Christine Ortiz, Assistant Professor Massachusetts Institute of Technology Department of Materials Science and Engineering WWW : http://web.mit.edu/cortiz/www/ Biological systems are one of the most difficult classes of materials to study mechanically at the nanoscale.1-3 Their complex multilevel and multicomponent structures (e.g. tissues, cells, proteins) need to be highly purified and characterized with minimal sample preparation damage (if possible, with no polishing and chemical treatments) so as to still give information relevant to in vivo function. Nanomechanical testing can be challenging due to the need for near-physiological conditions (i.e. aqueous salt solutions, ionic strength=0.15M, pH=7.4), the existence of varied 3-dimensional geometries and multiple buried interfaces, and their dynamic and sometimes, extremely soft, fluid-like nature. Following is a summary of a few new areas which I believe represent the most significant new paths in this field. I. Integration of Nanomechanical Testing Methods with Nanoscale Chemical/Structural Characterization Techniques Down to the Single Molecule Level in Near-Phys iological Conditions. One promising example of this is the combination of atomic force microscopy (AFM) and surface enhanced Raman spectroscopy (SERS)(Figure 1).4-8 SERS is a higher resolution version of traditional Raman spectroscopy, in which the wavelength and intensity of inelastically scattered light from molecules is measured. These wavelengths are shifted from the incident light by the energies of molecular vibrations and hence, allow for chemical identification and characterization of substances. -
China's Progress in Semiconductor Manufacturing Equipment
MARCH 2021 China’s Progress in Semiconductor Manufacturing Equipment Accelerants and Policy Implications CSET Policy Brief AUTHORS Will Hunt Saif M. Khan Dahlia Peterson Executive Summary China has a chip problem. It depends entirely on the United States and U.S. allies for access to advanced commercial semiconductors, which underpin all modern technologies, from smartphones to fighter jets to artificial intelligence. China’s current chip dependence allows the United States and its allies to control the export of advanced chips to Chinese state and private actors whose activities threaten human rights and international security. Chip dependence is also expensive: China currently depends on imports for most of the chips it consumes. China has therefore prioritized indigenizing advanced semiconductor manufacturing equipment (SME), which chip factories require to make leading-edge chips. But indigenizing advanced SME will be hard since Chinese firms have serious weaknesses in almost all SME sub-sectors, especially photolithography, metrology, and inspection. Meanwhile, the top global SME firms—based in the United States, Japan, and the Netherlands—enjoy wide moats of intellectual property and world- class teams of engineers, making it exceptionally difficult for newcomers to the SME industry to catch up to the leading edge. But for a country with China’s resources and political will, catching up in SME is not impossible. Whether China manages to close this gap will depend on its access to five technological accelerants: 1. Equipment components. Building advanced SME often requires access to a range of complex components, which SME firms often buy from third party suppliers and then assemble into finished SME. -
Is Technology Unnatural?
BOOKS & ARTS NATURE|Vol 450|29 November 2007 were in top scientific institutions: extreme mena chromosomes end in a series of repeated a fundamentally important process, but telom- dedication and long working hours, with no runs of cytosine bases that varied in length. erase continued to receive scant attention until supporting hierarchies — what Brady calls a Although this was the first molecular insight 1994–95, when it was shown to be aberrantly “rat lab”. Fellow scientists became her family into the structure of chromosome ends, it was activated in most human cancers. substitutes and friends, and there she met her not seen as important by the community, The biography succeeds in capturing Black- future husband, John Sedat. which is surprising in view of its implications burn’s vision, which has encouraged her to Blackburn’s DNA-sequencing skills were for for chromosome replication and transmission pursue unbeaten tracks to make discoveries her the key to discovery, and she took them to of genetic information. Blackburn blames the that today hold therapeutic promise for both Joe Gall’s lab in Yale after a short break to climb perception of Tetrahymena as a “freak organ- cancer and ageing. ■ to Mount Everest’s base camp with Sedat. In ism”. But it also fell outside what was then Maria A. Blasco is head of the Telomeres and Gall’s lab were some of the future principals of mainstream molecular biology. The story Telomerase Group in the Molecular Oncology the telomere field — Ginger Zakian, Mary-Lou repeated itself when she, together with Carol Program at the Spanish National Cancer Centre Pardue and, later, Tom Cech. -
The World's Largest Optical Networking and Communications Event
EXHIBITOR PROSPECTUS The world’s largest optical networking and communications event. of the OFC 2017 exhibit hall is SIGN UP NOW! EXHIBITION: 21-23 March 2017 LOS ANGELES CONVENTION CENTER CALIFORNIA, USA Sponsored by: OFCconference.org OFC 2017 EXHIBIT SPACE IS 96% JOIN 600+ EXHIBITORS AND SOLD OUT—SECURE YOURS TODAY. 13,000 BUYERS AT THE INDUSTRY’S LARGEST EXHIBITION. of exhibit attendees spent 99% of attendees visited the exhibits 32% 10+ hours on the show floor of all attendees have a role 72 countries represented in buying decisions. OFC attendees 13,000 are C-Level ATTENDEES of OFC 96% attendees come exhibitor satisfaction rate with from outside of 41.5 leads per exhibitor. the US OFC is the world’s largest from optical components and devices Exhibiting at OFC grows your A large and dynamic market. Capital and most prestigious to systems, test equipment, software business. expenditures among network event dedicated to and specialty fiber—OFC is where your operators will be nearly $180 billion optical networking and customers and prospects come to make With a solid and expanding base of in 2016, according to market research communications. their purchasing plans. 13,000 attendees from all sectors firm LightCounting. A strong growth of the market—from data center segment is in expansion of data Exhibit at OFC 2017 and be part OFC is Your BEST Opportunity to: end users and service providers and centers, with Google spending $10 of the ONE EVENT that defines carriers, to systems and component billion alone, and over $3 billion in • Connect with buyers the market and brings together vendors—OFC represents the transceiver sales for data centers • Meet decision makers the thought leaders and solution entire supply chain and provides across all customers, according to • Increase sales providers that drive the industry. -
Chicago Section American Chemical
http://chicagoacs.org NOVEMBER • 2008 CHICAGO SECTION AMERICAN CHEMICAL SOCIETY Joint Meeting of the University of Chicago Department of Chemistry and the Chicago Section ACS WEDNESDAY, NOVEMBER 19, 2008 The Parthenon Restaurant Vegetarian Spinach-Cheese Pie, Vege- PRESENTATION OF STIEGLITZ 314 South Halsted Street tarian Pastitsio (Macaroni baked with LECTURE 8:00 P.M. Chicago, IL broccoli, Bechamel sauce and Kefalotiri), 312-726-2407 Dolmades (vine leaves stuffed with rice, meats and herbs), Rotisserie-roasted DIRECTIONS TO THE MEETING lamb served with rice pilaf and roasted potatoes. Desserts: Baklava (flaky layers From Kennedy (I-90) or Edens (I-94): of Phyllo baked with nuts and honey) Drive downtown and exit at Adams and Galaktobouriko (flaky layers of Phyl- Street. Turn right to Halsted. Turn left at lo with vanilla custard and baked with Halsted. Restaurant is approximately syrup. Beverages, bread and butter. 1.5 blocks on the west side of the street. The cost is $30 to Section members who From Eisenhower (I-290): Drive east have paid their local section dues, mem- to Chicago. Exit at Racine and turn left. bers' families, and visiting ACS members. Go to Jackson Boulevard and turn right. The cost to members who have NOT Take Jackson to Halsted. Turn right at paid their local section dues and to non- Halsted. Restaurant is approximately Section members is $32. The cost to stu- 1/2 block on the west side of the street. dents and unemployed members is $15. Seating will be available for those who PARKING: Free valet parking. Parking wish to attend the meeting without dinner. -
Rise of the Molecular Machines Euan R
Angewandte. Essays International Edition: DOI: 10.1002/anie.201503375 Supramolecular Systems German Edition: DOI: 10.1002/ange.201503375 Rise of the Molecular Machines Euan R. Kay* and David A. Leigh* molecular devices · molecular machines · molecular motors · molecular nanotechnology Introduction inspirational in general terms, it is doubtful whether either of these manifestos had much practical influence on the devel- “When we get to the very, very small world … we have a lot of opment of artificial molecular machines.[5] Feynmans talk new things that would happen that represent completely new came at a time before chemists had the synthetic methods and opportunities for design … At the atomic level we have new kinds analytical tools available to be able to consider how to make of forces and new kinds of possibilities, new kinds of effects. The molecular machines; Drexlers somewhat nonchemical view problem of manufacture and reproduction of materials will be of atomic construction is not shared by the majority of quite different … inspired by biological phenomena in which experimentalists working in this area. In fact, “mechanical” chemical forces are used in a repetitious fashion to produce all movement within molecules has been part of chemistry since kinds of weird effects (one of which is the author) …” conformational analysis became established in the 1950s.[6] As Richard P. Feynman (1959)[2] well as being central to advancing the structural analysis of complex molecules, this was instrumental in chemists begin- It has long been appreciated that molecular motors and ning to consider dynamics as an intrinsic aspect of molecular machines are central to almost every biological process. -
Nanoscience and Nanotechnologies: Opportunities and Uncertainties
ISBN 0 85403 604 0 © The Royal Society 2004 Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the UK Copyright, Designs and Patents Act (1998), no part of this publication may be reproduced, stored or transmitted in any form or by any means, without the prior permission in writing of the publisher, or, in the case of reprographic reproduction, in accordance with the terms of licences issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of licenses issued by the appropriate reproduction rights organization outside the UK. Enquiries concerning reproduction outside the terms stated here should be sent to: Science Policy Section The Royal Society 6–9 Carlton House Terrace London SW1Y 5AG email [email protected] Typeset in Frutiger by the Royal Society Proof reading and production management by the Clyvedon Press, Cardiff, UK Printed by Latimer Trend Ltd, Plymouth, UK ii | July 2004 | Nanoscience and nanotechnologies The Royal Society & The Royal Academy of Engineering Nanoscience and nanotechnologies: opportunities and uncertainties Contents page Summary vii 1 Introduction 1 1.1 Hopes and concerns about nanoscience and nanotechnologies 1 1.2 Terms of reference and conduct of the study 2 1.3 Report overview 2 1.4 Next steps 3 2 What are nanoscience and nanotechnologies? 5 3 Science and applications 7 3.1 Introduction 7 3.2 Nanomaterials 7 3.2.1 Introduction to nanomaterials 7 3.2.2 Nanoscience in this area 8 3.2.3 Applications 10 3.3 Nanometrology -
Enhancing Undergraduate Students' Learning and Research
Paper ID #13595 Enhancing Undergraduate Students’ Learning and Research Experiences through Hands on Experiments on Bio-nanoengineering Dr. Narayan Bhattarai, North Carolina A&T State University Narayan Bhattarai is Assistant Professor of Bioengineering, Department of Chemical, Biological and Bioengineering, North Carolina A&T State University (NCAT). Dr. Bhattarai teaches biomaterials and nanotechnology to undergraduate and graduate students. He is principal investigator of NUE Enhancing Undergraduate Students’ Learning Experiences on Bio-Nanoengineering project at NCAT. Mrs. Courtney Lambeth, North Carolina A&T State University Mrs. Lambeth serves as the Educational Assessment and Administrative Coordinator for the Engineering Research Center for Revolutionizing Metallic Biomaterials at North Carolina Agricultural and Technical State University in Greensboro, North Carolina. Dr. Dhananjay Kumar, North Carolina A&T State University Dr. Cindy Waters, North Carolina A&T State University Her research team is skilled matching these newer manufacturing techniques to distinct material choices and the unique materials combination for specific applications. She is also renowned for her work in the Engineering Education realm working with faculty motivation for change and re-design of Material Science courses for more active pedagogies Dr. Devdas M. Pai, North Carolina A&T State University Devdas Pai is a Professor of Mechanical Engineering and Director of Education and Outreach of the Engineering Research Center for Revolutionizing Metallic Biomaterials at North Carolina A&T State University. His teaching and research is in the areas of manufacturing processes and materials. Dr. Matthew B. A. McCullough, North Carolina A&T State University An assistant professor in the department of Chemical, Biological, and Bioengineering, he has his B.S. -
Engineered Carbon Nanotubes and Graphene for Nanoelectronics And
Engineered Carbon Nanotubes and Graphene for Nanoelectronics and Nanomechanics E. H. Yang Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ, USA, 07030 ABSTRACT We are exploring nanoelectronic engineering areas based on low dimensional materials, including carbon nanotubes and graphene. Our primary research focus is investigating carbon nanotube and graphene architectures for field emission applications, energy harvesting and sensing. In a second effort, we are developing a high-throughput desktop nanolithography process. Lastly, we are studying nanomechanical actuators and associated nanoscale measurement techniques for re-configurable arrayed nanostructures with applications in antennas, remote detectors, and biomedical nanorobots. The devices we fabricate, assemble, manipulate, and characterize potentially have a wide range of applications including those that emerge as sensors, detectors, system-on-a-chip, system-in-a-package, programmable logic controls, energy storage systems, and all-electronic systems. INTRODUCTION A key attribute of modern warfare is the use of advanced electronics and information technologies. The ability to process, analyze, distribute and act upon information from sensors and other data at very high- speeds has given the US military unparalleled technological superiority and agility in the battlefield. While recent advances in materials and processing methods have led to the development of faster processors and high-speed devices, it is anticipated that future technological breakthroughs in these areas will increasingly be driven by advances in nanoelectronics. A vital enabler in generating significant improvements in nanoelectronics is graphene, a recently discovered nanoelectronic material. The outstanding electrical properties of both carbon nanotubes (CNTs) [1] and graphene [2] make them exceptional candidates for the development of novel electronic devices. -
Plant Virus-Based Materials for Biomedical Applications: Trends and Prospects
Advanced Drug Delivery Reviews 145 (2019) 96–118 Contents lists available at ScienceDirect Advanced Drug Delivery Reviews journal homepage: www.elsevier.com/locate/addr Plant virus-based materials for biomedical applications: Trends and prospects Sabine Eiben a,1, Claudia Koch a,1, Klara Altintoprak a,2, Alexander Southan b,2, Günter Tovar b,c, Sabine Laschat d, Ingrid M. Weiss e, Christina Wege a,⁎ a Department of Molecular Biology and Plant Virology, Institute of Biomaterials and Biomolecular Systems, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany b Institute of Interfacial Process Engineering and Plasma Technology IGVP, University of Stuttgart, Nobelstr. 12, 70569 Stuttgart, Germany c Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Nobelstr. 12, 70569 Stuttgart, Germany d Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany e Department of Biobased Materials, Institute of Biomaterials and Biomolecular Systems, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany article info abstract Article history: Nanomaterials composed of plant viral components are finding their way into medical technology and health Received 27 March 2018 care, as they offer singular properties. Precisely shaped, tailored virus nanoparticles (VNPs) with multivalent pro- Received in revised form 6 August 2018 tein surfaces are efficiently loaded with functional compounds such as contrast agents and drugs, and serve as Accepted 27 August 2018 carrier templates and targeting vehicles displaying e.g. peptides and synthetic molecules. Multiple modifications Available online 31 August 2018 enable uses including vaccination, biosensing, tissue engineering, intravital delivery and theranostics. Novel con- Keywords: cepts exploit self-organization capacities of viral building blocks into hierarchical 2D and 3D structures, and their Plant virus nanoparticles (plant VNPs) conversion into biocompatible, biodegradable units.