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protein nano-delivery

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https://www.readbyqxmd.com/read/29147499/nano-microvehicles-for-efficient-delivery-and-bio-sensing-at-the-cellular-level
#1
S Campuzano, B Esteban-Fernández de Ávila, P Yáñez-Sedeño, J M Pingarrón, J Wang
A perspective review of recent strategies involving the use of nano/microvehicles to address the key challenges associated with delivery and (bio)sensing at the cellular level is presented. The main types and characteristics of the different nano/microvehicles used for these cellular applications are discussed, including fabrication pathways, propulsion (catalytic, magnetic, acoustic or biological) and navigation strategies, and relevant parameters affecting their propulsion performance and sensing and delivery capabilities...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29134085/gene-delivery-ability-of-polyethylenimine-and-polyethylene-glycol-dual-functionalized-nanographene-oxide-in-11-different-cell-lines
#2
Liping Wu, Jinshan Xie, Tan Li, Zihao Mai, Lu Wang, Xiaoping Wang, Tongsheng Chen
We recently developed a polyethylenimine (PEI) and polyethylene glycol (PEG) dual-functionalized reduced graphene oxide (GO) (PEG-nrGO-PEI, RGPP) for high-efficient gene delivery in HepG2 and Hela cell lines. To evaluate the feasibility and applicability of RGPP as a gene delivery carrier, we here assessed the transfection efficiency of RGPP on gene plasmids and siRNA in 11 different cell lines. Commercial polyalkyleneimine cation transfection reagent (TR) was used as comparison. In HepG2 cells, RGPP exhibited much stronger delivery ability for siRNA and large size plasmids than TR...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29132177/an-insight-on-silk-protein-sericin-from-processing-to-biomedical-application
#3
Farogh Ahsan, Tarique Mahmood Ansari, Shazia Usmani, Paramdeep Bagga
Silks are naturally occurring polymers that have been used clinically as sutures for hundreds of years. It's so for obtained from insects or worms, silk consists of a filament core protein, termed fibroin, and a glue-like coating made up of sericin proteins. An important component of silk has an extended history of being discarded as a waste in the course of silk processing. The cost of sericin for tissue engineering is underestimated and its capability in using as regenerative remedy has simply began to be explored...
November 13, 2017: Drug Research
https://www.readbyqxmd.com/read/29121767/from-pulmonary-surfactant-synthetic-kl4-peptide-as-effective-sirna-delivery-vector-for-pulmonary-delivery
#4
Yingshan Qiu, Michael Y T Chow, Wanling Liang, Winnie W Y Chung, Judith C W Mak, Jenny K W Lam
Pulmonary delivery of small interfering RNA (siRNA) has huge potential for the treatment of a wide range of respiratory diseases. The ability of naked siRNA to transfect cells in the lungs without a delivery vector has prompted the investigation of whether an endogenous component is at least partially responsible for the cellular uptake of siRNA, and whether a safe and efficient delivery system could be developed from this component to further improve the transfection efficiency. Surfactant protein B (SP-B), a positively charged protein molecule found in lung surfactant, is one of the possible candidates...
November 17, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29115333/an-apolipoprotein-enriched-biomolecular-corona-switches-the-cellular-uptake-mechanism-and-trafficking-pathway-of-lipid-nanoparticles
#5
L Digiacomo, F Cardarelli, D Pozzi, S Palchetti, M A Digman, E Gratton, A L Capriotti, M Mahmoudi, G Caracciolo
Following exposure to biological milieus (e.g. after systemic administration), nanoparticles (NPs) get covered by an outer biomolecular corona (BC) that defines many of their biological outcomes, such as the elicited immune response, biodistribution, and targeting abilities. In spite of this, the role of BC in regulating the cellular uptake and the subcellular trafficking properties of NPs has remained elusive. Here, we tackle this issue by employing multicomponent (MC) lipid NPs, human plasma (HP) and HeLa cells as models for nanoformulations, biological fluids, and target cells, respectively...
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29113568/combined-delivery-of-bone-morphogenetic-protein-2-and-insulin-like-growth-factor-1-from-nano-poly-%C3%AE-glutamic-acid-%C3%AE-tricalcium-phosphate-based-calcium-phosphate-cement-and-its-effect-on-bone-regeneration-in%C3%A2-vitro
#6
Xiulin Shu, Jin Feng, Jing Feng, Xiaomo Huang, Liangqiu Li, Qingshan Shi
In this study, nano-doped calcium phosphate cement delivery systems (poly (γ-glutamic acid)/β-tricalcium phosphate/calcium phosphate ceramics and nano (γ-glutamic acid)/β-tricalcium phosphate/calcium phosphate ceramic) were fabricated, and low doses (10 µg/g) of two growth factors, insulin-like growth factor-1 and bone morphogenetic protein-2, were encapsulated then sequentially released. We characterized the delivery systems using Fourier transform infrared spectroscopy and X-ray diffraction and measured washout resistance and compressive strength, and thus optimized the most appropriate proportioning of delivery systems for the two growth factors...
November 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29104135/nonlocal-strain-gradient-beam-model-for-postbuckling-and-associated-vibrational-response-of-lipid-supramolecular-protein-micro-nano-tubules
#7
S Sahmani, M M Aghdam
As a supramolecular construction, lipid protein micro/nano-tubules can be utilized in a variety of sustained biological delivery system. The high slenderness ratio of lipid tubules makes their hierarchical assembly into a desired architecture difficult. Therefore, an accurate prediction of mechanical behavior of lipid tubular is essential. The objective of this study is to capture size dependency in the postbuckling and vibrational response of the postbuckled lipid micro/nano-tubules more comprehensively. To this purpose, the nonlocal strain gradient elasticity theory is incorporated to the third-order shear deformation beam theory to develop an unconventional beam model...
November 8, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/29097204/chitosan-coated-doxorubicin-nano-particles-drug-delivery-system-inhibits-cell-growth-of-liver-cancer-via-p53-prc1-pathway
#8
Bai-Liang Ye, Ru Zheng, Xiao-Jiao Ruan, Zhi-Hai Zheng, Hua-Jie Cai
BACKGROUND: Nano-particles have been widely used in target-specific drug delivery system and showed advantages in cancers treatment. This study aims to evaluate the effect of chitosan coated doxorubicin nano-particles drug delivery system in liver cancer. METHODS: The chitosan nano-particles were prepared by using the ionic gelation method. The characterizations of the nano-particles were determined by transmission electron microscopy. The cytotoxicity was detected by MTT assay, and the endocytosis, cell apoptosis and cell cycle were examined by flow cytometry...
October 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29078713/characterization-of-brusatol-self-microemulsifying-drug-delivery-system-and-its-therapeutic-effect-against-dextran-sodium-sulfate-induced-ulcerative-colitis-in-mice
#9
Jiangtao Zhou, Lihua Tan, Jianhui Xie, Zhengquan Lai, Yanfeng Huang, Chang Qu, Dandan Luo, Zhixiu Lin, Ping Huang, Ziren Su, Youliang Xie
Brusatol (BR) is one of the main bioactive components derived from Brucea javanica, a medicinal herb historically used in the treatment of dysenteric disorders (also known as ulcerative colitis(UC)). Due to its poor aqueous solubility, a novel brusatol self-microemulsifying drug delivery system (BR-SMEDDS) nanoformulation with smaller size, higher negative zeta potential and drug content, and excellent stability was developed. The appearance of BR-SMEDDS remained clear and transparent, and transmission electron microscopy showed microemulsion droplets to be spherical with homogeneous distribution...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/29069931/synthetic-lipoprotein-as-nano-material-vehicle-in-the-targeted-drug-delivery
#10
Xueqin Zhang, Gangliang Huang
High-density lipoprotein (HDL) and low-density lipoprotein (LDL), as human endogenous lipoprotein particles, have low toxicity, high selectivity, and good safety. They can avoid the recognition and clearance of human reticuloendothelial system. These synthetic lipoproteins (sLPs) have been attracted extensive attention as the nanovectors for tumor-targeted drug and gene delivery. Herein, recent advances in the field of anticancer based on these two lipid proteins and recombinant lipoproteins (rLPs) as target delivery vectors were analyzed and discussed...
December 2017: Drug Delivery
https://www.readbyqxmd.com/read/29058417/cell-permeable-mmp-2-activatable-nickel-ferrite-and-his-tagged-fusion-protein-self-assembled-fluorescent-nanoprobe-for-tumor-magnetic-targeting-and-imaging
#11
Lu Sun, Shuping Xie, Jing Qi, Ergang Liu, Di Liu, Quan Liu, Sunhui Chen, Huining He, Victor C Yang
Matrix metalloproteinases (MMPs) activatable imaging probe has been explored for tumor detection. However, activation of the probe is mainly done in the extracellular space without intracellular uptake of the probe for more sensitivity. Although cell-penetrating peptides (CPPs) have been demonstrated to enable intracellular delivery of the imaging probe, they nevertheless encounter off-target delivery of the cargos to normal tissues. Herein, we have developed a dual MMP-2-activatable and tumor cell-permeable magnetic nanoprobe to simultaneously achieve selective and intracellular tumor imaging...
November 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29057246/engineering-of-extracellular-vesicles-as-drug-delivery-vehicles
#12
REVIEW
Sung-Man Kim, Han-Soo Kim
Extracellular vesicles (EVs) are secreted membrane-enclosed nano-sized particles (40-1,000 nm) that deliver biological information between cells. The molecular composition of these subcellular particles includes growth factor receptors, ligands adhesion proteins, mRNA, miRNAs, lncRNA and lipids that are derived from donor cells. A number of studies demonstrated that stem cell-derived EVs are the key mediator of tissue repair and regeneration in multiple animal disease models. In addition, the composition of these particles is known to be altered in cancer and disease pathology suggesting them for useful in diagnostic and therapeutic purposes...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/29054385/functionalized-calcium-carbonate-microparticles-for-the-delivery-of-proteins
#13
R Roth, J Schoelkopf, J Huwyler, M Puchkov
The recently introduced functionalized calcium carbonate (FCC), a porous microparticle with a nano-structured, lamellar surface, shows promising properties in the field of oral drug delivery. In this work, FCC was loaded with biomolecules e.g. lysozyme (Lys) and bovine serum albumin (BSA) in order to investigate its suitability to deliver protein based drugs. Loading efficiency for our model proteins was >90%and enzyme activity was preserved as demonstrated by Michaelis-Menten enzyme kinetic experiments...
October 17, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29053277/utilizing-inverse-emulsion-polymerization-to-generate-responsive-nanogels-for-cytosolic-protein-delivery
#14
Kishore Raghupathi, Scott J Eron, Francesca Anson, Jeanne A Hardy, S Thayumanavan
Therapeutic biologics have various advantages over synthetic drugs in terms of selectivity, their catalytic nature, and, thus, therapeutic efficacy. These properties offer the potential for more effective treatments that may also overcome the undesirable side effects observed due to off-target toxicities of small molecule drugs. Unfortunately, systemic administration of biologics is challenging due to cellular penetration, renal clearance, and enzymatic degradation difficulties. A delivery vehicle that can overcome these challenges and deliver biologics to specific cellular populations has the potential for significant therapeutic impact...
November 2, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29019656/adsorption-of-insecticidal-crystal-protein-cry11aa-onto-nano-mg-oh-2-effects-on-bioactivity-and-anti-ultraviolet-ability
#15
Xiaohong Pan, Zhangyan Xu, Lan Li, Enshi Shao, Saili Chen, Tengzhou Huang, Zhi Chen, Wenhua Rao, Tianpei Huang, Lingling Zhang, Songqing Wu, Xiong Guan
The traditional Bacillus thuringiensis (Bt) formulations for field applications are not resistant to harsh environmental conditions. Hence, the active ingredients of the Bt bioinsecticides could degrade quickly and has low anti-ultraviolet ability in the field, which significantly limits its practical application. In the present study, we developed an efficient and stable delivery system for Bt Cry11Aa toxins. We coated Cry11Aa proteins with Mg(OH)2 nanoparticles (MHNPs), and then assessed the effects of MHNPs on bioactivity and anti-ultraviolet ability of the Cry11Aa proteins...
October 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29017387/concentration-dependent-protein-adsorption-at-the-nano-bio-interfaces-of-polymeric-nanoparticles-and-serum-proteins
#16
Tian-Xu Zhang, Guan-Yin Zhu, Bo-Yao Lu, Chao-Liang Zhang, Qiang Peng
AIM: A comprehensive understanding of nanoparticle (NP)-protein interaction (protein corona formation) is required. So far, many factors influencing this interaction have been investigated, like size and ζ potential. However, NPs exposure concentration has always been ignored. Herein, we aim to disclose the correlation of NPs exposure concentration with protein adsorption. MATERIALS & METHODS: Four polymeric NPs systems possessing similar sizes (230 ± 20 nm) but varied ζ potentials (-30 ∼ +40 mv) were prepared...
October 10, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28994207/identification-of-peptide-binding-sites-within-bsa-using-rapid-laser-induced-covalent-cross-linking-combined-with-high-performance-mass-spectrometry
#17
Melinda Hauser, Chen Qian, Steven T King, Sarah Kauffman, Fred Naider, Robert L Hettich, Jeffrey M Becker
We are developing a rapid, time-resolved method using laser-activated cross-linking to capture protein-peptide interactions as a means to interrogate the interaction of serum proteins as delivery systems for peptides and other molecules. A model system was established to investigate the interactions between bovine serum albumin (BSA) and 2 peptides, the tridecapeptide budding-yeast mating pheromone (α-factor) and the decapeptide human gonadotropin-releasing hormone (GnRH). Cross-linking of α-factor, using a biotinylated, photoactivatable p-benzoyl-L-phenylalanine (Bpa)-modified analog, was energy-dependent and achieved within seconds of laser irradiation...
October 10, 2017: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/28985680/understanding-the-effect-of-single-cysteine-mutations-on-gold-nanoclusters-as-studied-by-spectroscopy-and-density-functional-theory-modeling
#18
Sayantani Chall, Soumya Sundar Mati, Indranee Das, Amrita Kundu, Goutam De, Krishnananda Chattopadhyay
Fluorescent metal nanoclusters have generated considerable excitement in nanobiotechnology, particularly in the applications of biolabeling, targeted delivery, and biological sensing. The present work is an experimental and computational study that aims to understand the effects of protein environment on the synthesis and electronic properties of gold nanoclusters. MPT63, a drug target of Mycobacterium tuberculosis, was used as the template protein to synthesize, for the first time, gold nanoclusters at a low micromolar concentration of the protein...
October 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28979120/engineered-outer-membrane-vesicle-is-potent-to-elicit-hpv16e7-specific-cellular-immunity-in-a-mouse-model-of-tc-1-graft-tumor
#19
Shijie Wang, Weiwei Huang, Kui Li, Yufeng Yao, Xu Yang, Hongmei Bai, Wenjia Sun, Cunbao Liu, Yanbing Ma
PURPOSE: Currently, therapeutic tumor vaccines under development generally lack significant effects in human clinical trials. Exploring a powerful antigen delivery system is a potential approach to improve vaccine efficacy. We sought to explore engineered bacterial outer membrane vesicles (OMVs) as a new vaccine carrier for efficiently delivering tumor antigens and provoking robust antitumor immune responses. MATERIALS AND METHODS: First, the tumoral antigen human papillomavirus type 16 early protein E7 (HPV16E7) was presented on Escherichia coli-derived OMVs by genetic engineering methods, acquiring the recombinant OMV vaccine...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28946364/channel-directed-rutin-nano-encapsulation-in-phytoferritin-induced-by-guanidine-hydrochloride
#20
Rui Yang, Yuqian Liu, Chris Blanchard, Zhongkai Zhou
Phytoferritin cage has a nano-sized cavity to encapsulate bioactive molecules. In this work, a novel approach is presented that guanidine hydrochloride (GuHCl) (2mM) can expand the channel of apo-soybean seed ferritin (apoSSF) and promote the encapsulation of rutin molecules in apoSSF at pH 7.0 without the disassembly of the protein cage. Upon removal of GuHCl from SSF, a rutin encapsulation ratio of 10.1% was obtained; and the prepared rutin-loaded ferritin nanoparticles were homogeneously distributed, showing a shell-like morphology with a size of 12nm...
February 1, 2018: Food Chemistry
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