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The Nanomedicine

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https://www.readbyqxmd.com/read/30335959/turning-a-luffa-protein-into-a-self-assembled-biodegradable-nanoplatform-for-multitargeted-cancer-therapy
#1
Wangxiao He, Jin Yan, Fang Sui, Simeng Wang, Xi Su, Yiping Qu, Qingchen Yang, Hui Guo, Meiju Ji, Wuyuan Lu, Yongping Shao, Peng Hou
The peptide-derived self-assembly platform has attracted increasing attention for its great potential to develop into multitargeting nanomedicines as well as its inherent biocompatibility and biodegradability. However, their clinical application potentials are often compromised by low stability, weak membrane penetrating ability, and limited functions. Herein, inspired by a natural protein from the seeds of Luffa cylindrica, we engineered via epitope grafting and structure design a hybrid peptide-based nanoplatform, termed Lupbin, which is capable of self-assembling into a stable superstructure and concurrently targeting multiple protein-protein interactions (PPIs) located in cytoplasm and nuclei...
October 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/30328157/effective-and-targeted-human-orthotopic-glioblastoma-xenograft-therapy-via-a-multifunctional-biomimetic-nanomedicine
#2
Yan Zou, Yanjie Liu, Zhipeng Yang, Dongya Zhang, Yiqing Lu, Meng Zheng, Xue Xue, Jia Geng, Roger Chung, Bingyang Shi
Glioblastoma multiforme (GBM) is a fatal central nervous system tumor without effective treatment. Chemotherapeutic agents are mainstays in the treatment of glioblastoma. However, the effectiveness of these is seriously hindered by poor blood-brain-barrier (BBB) penetrance and tumor targeting, together with short biological half-life. Improved chemotherapy is thus urgently needed for GBM. Multifunctional nanoparticle delivery systems offer much promise in overcoming current limitations. Accordingly, a multifunctional biomimetic nanomedicine is developed by functionalizing the surface of red blood cell membranes (RBCms) with angiopep-2 and loading pH-sensitive nanoparticles (polymer, doxorubicin (Dox), and lexiscan (Lex)) using the functionalized cell membrane to generate the novel nanomedicine, Ang-RBCm@NM-(Dox/Lex)...
October 16, 2018: Advanced Materials
https://www.readbyqxmd.com/read/30327464/cationic-nanoparticle-as-an-inhibitor-of-cell-free-dna-induced-inflammation
#3
Huiyi Liang, Bo Peng, Cong Dong, Lixin Liu, Jiaji Mao, Song Wei, Xinlu Wang, Hanshi Xu, Jun Shen, Hai-Quan Mao, Xiaohu Gao, Kam W Leong, Yongming Chen
Cell-free DNA (cfDNA) released from damaged or dead cells can activate DNA sensors that exacerbate the pathogenesis of rheumatoid arthritis (RA). Here we show that ~40 nm cationic nanoparticles (cNP) can scavenge cfDNA derived from RA patients and inhibit the activation of primary synovial fluid monocytes and fibroblast-like synoviocytes. Using clinical scoring, micro-CT images, MRI, and histology, we show that intravenous injection of cNP into a CpG-induced mouse model or collagen-induced arthritis rat model can relieve RA symptoms including ankle and tissue swelling, and bone and cartilage damage...
October 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/30326276/bioactive-effects-of-silica-nanoparticles-on-bone-cells-are-size-surface-and-composition-dependent
#4
Shin-Woo Ha, Manjula Viggeswarapu, Mark M Habib, George R Beck
Silica based nanoparticles have been demonstrated to have intrinsic biologic activity towards the skeleton and to function by promoting the differentiation of bone forming osteoblasts while inhibiting the differentiation of bone resorbing osteoclasts. The excitement surrounding nanomedicine in part revolves around the almost unlimited possibilities for varying the physicochemical properties including size, composition, and surface charge. To date few studies have attempted to manipulate these characteristics in concert to optimize a complex biologic outcome...
October 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/30324457/nanoparticles-targeting-retinal-and-choroidal-capillaries-in-vivo
#5
Alexandra Haunberger, Achim Goepferich
The functionalization of nanoparticles with specific receptor ligands enables their accumulation in targeted tissues and can be used therapeutically to transport drugs or for diagnostic purposes (Parveen et al., Nanomedicine 8:147-166, 2012). We could recently show that targeting endothelial cells in retinal and choroidal capillaries can be realized even under physiological conditions using quantum dots as model nanoparticles functionalized with an integrin-binding peptide (Pollinger et al., Proc Natl Acad Sci 110:6115-6120, 2013)...
2019: Methods in Molecular Biology
https://www.readbyqxmd.com/read/30324329/nanomedicines-for-malaria-chemotherapy-encapsulation-vs-polymer-therapeutics
#6
REVIEW
Sindisiwe Mvango, William M R Matshe, Abideen O Balogun, Lynne A Pilcher, Mohammed O Balogun
Malaria is one of the oldest infectious diseases that afflict humans and its history extends back for millennia. It was once prevalent throughout the globe but today it is mainly endemic to tropical regions like sub-Saharan Africa and South-east Asia. Ironically, treatment for malaria has existed for centuries yet it still exerts an enormous death toll. This contradiction is attributed in part to the rapid development of resistance by the malaria parasite to chemotherapeutic drugs. In turn, resistance has been fuelled by poor patient compliance to the relatively toxic antimalarial drugs...
October 15, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/30324082/-in-vivo-therapeutic-evaluation-of-polymeric-nanomedicines-effect-of-different-targeting-peptides-on-therapeutic-efficacy-against-breast-cancer
#7
Yongmei Zhao, Nicholas L Fletcher, Tianqing Liu, Anna C Gemmell, Zachary H Houston, Idriss Blakey, Kristofer J Thurecht
Targeted nanomedicines offer many advantages over macromolecular therapeutics that rely only on passive accumulation within the tumour environment. The aim of this work was to investigate the in vivo anticancer efficiency of polymeric nanomedicines that were conjugated with peptide aptamers that show high affinity for receptors on many cancer cells. In order to assess the ability for the nanomedicine to treat cancer and investigate how structure affected the behavior of the nanomedicine, three imaging modalities were utilized, including in vivo optical imaging, multispectral optoacoustic tomography (MSOT) and ex vivo confocal microscopy...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/30323564/gastric-cancer-combination-therapy-synthesis-of-a-hyaluronic-acid-and-cisplatin-containing-lipid-prodrug-coloaded-with-sorafenib-in-a-nanoparticulate-system-to-exhibit-enhanced-anticancer-efficacy-and-reduced-toxicity
#8
Feng Yang, Aimei Li, Han Liu, Hairong Zhang
Purpose: Gastric cancer is one of the most common human epithelial malignancies, and using nanoparticles (NPs) in the diagnosis and treatment of cancer has been extensively studied. The aim of this study was to develop hyaluronic acid (HA) containing lipid NPs coloaded with cisplatin (CDDP) and sorafenib (SRF) for the treatment of gastric cancer. Materials and methods: HA and CDDP containing lipid prodrug was synthesized using polyethylene glycol (PEG) as a linker (HA-PEG-CDDP)...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/30321619/light-responsive-nanomedicine-for-biophotonic-imaging-and-targeted-therapy
#9
REVIEW
Jihwan Son, Gawon Yi, Jihye Yoo, Changhee Park, Heebeom Koo, Hak Soo Choi
Nanoparticles (NPs) play a key role in nanomedicine in multimodal imaging, drug delivery and targeted therapy of human diseases. Consequently, due to the attractive properties of NPs including high stability, high payload, multifunctionality, design flexibility, and efficient delivery to target tissues, nanomedicine employs various types of NPs to enhance targeting and treatment efficacy. In this review, we primarily focus on light-responsive materials, such as fluorophores, photosensitizers, semiconducting polymers, carbon structures, gold particles, quantum dots, and upconversion crystals, for their biomedical applications...
October 12, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/30321577/pulmonary-surfactant-and-drug-delivery-focusing-on-the-role-of-surfactant-proteins
#10
Roberta Guagliardo, Jésus Pérez-Gil, Stefaan De Smedt, Koen Raemdonck
Pulmonary surfactant (PS) has been extensively studied because of its primary role in mammalian breathing. The deposition of this surface-active material at the alveolar air-water interface is essential to lower surface tension, thus avoiding alveolar collapse during expiration. In addition, PS is involved in host defense, facilitating the clearance of potentially harmful particulates. PS has a unique composition, including 92% of lipids and 8% of surfactant proteins (SPs) by mass. Although they constitute the minor fraction, SPs to a large extent orchestrate PS-related functions...
October 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/30319257/advanced-nanomaterials-targeting-hypoxia-to-enhance-radiotherapy
#11
REVIEW
Jia Li, Wenting Shang, Yong Li, Sirui Fu, Jie Tian, Ligong Lu
Hypoxia within solid tumors is often responsible for the failure of radiotherapy. The development of hypoxia-targeting nanomaterials - aimed at enhancing the effect of radiotherapy by electrical or heat effects and at modulating hypoxia in the tumor microenvironment - is a promising strategy to address this issue. We provide an overview of recently developed advanced materials that potentiate radiotherapy. First, we summarize novel materials for oxygen delivery or production to modify the tumor microenvironment, thus improving the effects of ionizing radiation...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/30317972/nanoparticles-in-daily-life-applications-toxicity-and-regulations
#12
Ritu Gupta, Huan Xie
At nanoscale, man-made materials may show unique properties that differ from bulk and dissolved counterparts. The unique properties of engineered nanomaterials not only impart critical advantages but also confer toxicity because of their unwanted interactions with different biological compartments and cellular processes. In this review, we discuss various entry routes of nanomaterials in the human body, their applications in daily life, and the mechanisms underlying their toxicity. We further explore the passage of nanomaterials into air, water, and soil ecosystems, resulting in diverse environmental impacts...
2018: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/30316298/polymer-coated-gold-ferric-oxide-superparamagnetic-nanoparticles-for-theranostic-applications
#13
Muhammad Raisul Abedin, Siddesh Umapathi, Harika Mahendrakar, Tunyaboon Laemthong, Holly Coleman, Denise Muchangi, Santimukul Santra, Manashi Nath, Sutapa Barua
BACKGROUND: Engineered inorganic nanoparticles (NPs) are essential components in the development of nanotechnologies. For applications in nanomedicine, particles need to be functionalized to ensure a good dispersibility in biological fluids. In many cases however, functionalization is not sufficient: the particles become either coated by a corona of serum proteins or precipitate out of the solvent. We show that by changing the coating of magnetic iron oxide NPs using poly-L-lysine (PLL) polymer the colloidal stability of the dispersion is improved in aqueous solutions including water, phosphate buffered saline (PBS), PBS with 10% fetal bovine serum (FBS) and cell culture medium, and the internalization of the NPs toward living mammalian cells is profoundly affected...
October 13, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/30315833/remotely-controlled-opening-of-delivery-vehicles-and-release-of-cargo-by-external-triggers
#14
REVIEW
Dingcheng Zhu, Sathi Roy, Ziyao Liu, Horst Weller, Wolfgang Parak, Neus Feliu
Tremendous efforts have been devoted to the development of future nanomedicines that can be specifically designed to incorporate responsive elements that undergo modification in structural properties upon external triggers. One potential use of such stimuli-responsive materials is to release encapsulated cargo upon excitation by an external trigger. Today, such stimuli-response materials allow for spatial and temporal tunability, which enables the controlled delivery of compounds in a specific and dose-dependent manner...
October 10, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/30310275/effects-of-core-size-and-peg-coating-layer-of-iron-oxide-nanoparticles-on-the-distribution-and-metabolism-in-mice
#15
Weiming Xue, Yanyan Liu, Na Zhang, Youdong Yao, Pei Ma, Huiyun Wen, Saipeng Huang, Yane Luo, Haiming Fan
Introduction: In vivo distribution of polyethylene glycol (PEG)ylated functional nanoparticles is vital for determining their imaging function and therapeutic efficacy in nanomedicine. However, contradictory results have been reported regarding the effect of core size and PEG surface of the nanoparticles on biodistribution. Methods: To clarify this ambiguous understanding, using iron oxide nanoparticles (IONPs) as a model system, we investigated the effect of core size and PEG molecule weights on in vivo distribution in mice...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/30308257/translating-nanomedicines-thinking-beyond-materials-a-young-investigator-s-reply-to-the-novelty-bubble
#16
Dominik Witzigmann, Sjoerd Hak, Roy van der Meel
No abstract text is available yet for this article.
October 8, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/30307695/remodeling-tumor-associated-macrophages-and-neovascularization-overcomes-egfr-t790m-associated-drug-resistance-by-pd-l1-nanobody-mediated-codelivery
#17
Weimin Yin, Xiaolu Yu, Xuejia Kang, Yuge Zhao, Pengfei Zhao, Hongyue Jin, Xuhong Fu, Yakun Wan, Chengyuan Peng, Yongzhuo Huang
Precision medicine has made a significant breakthrough in the past decade. The most representative success is the molecular targeting therapy of epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI) in non-small-cell lung cancer (NSCLC) with oncogenic drivers, approved by the US Food and Drug Administration (FDA) as first-line therapeutics for substituting chemotherapy. However, the rapidly developed TKI resistance invariably leads to unsustainable treatment. For example, gefitinib is the first choice for advanced NSCLC with EGFR mutation, but most patients would soon develop secondary EGFRT790M mutation and acquire gefitinib resistance...
October 11, 2018: Small
https://www.readbyqxmd.com/read/30306459/rapid-optimization-of-liposome-characteristics-using-a-combined-microfluidics-and-design-of-experiment-approach
#18
Mahsa Sedighi, Sandro Sieber, Fereshteh Rahimi, Mohammad-Ali Shahbazi, Ali Hossein Rezayan, Jörg Huwyler, Dominik Witzigmann
Liposomes have attracted much attention as the first nanoformulations entering the clinic. The optimization of physicochemical properties of liposomes during nanomedicine development however is time-consuming and challenging despite great advances in formulation development. Here, we present a systematic approach for the rapid size optimization of liposomes. The combination of microfluidics with a design-of-experiment (DoE) approach offers a strategy to rapidly screen and optimize various liposome formulations, i...
October 10, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/30304823/surface-modification-of-magnetic-iron-oxide-nanoparticles
#19
REVIEW
Nan Zhu, Haining Ji, Peng Yu, Jiaqi Niu, M U Farooq, M Waseem Akram, I O Udego, Handong Li, Xiaobin Niu
Functionalized iron oxide nanoparticles (IONPs) are of great interest due to wide range applications, especially in nanomedicine. However, they face challenges preventing their further applications such as rapid agglomeration, oxidation, etc. Appropriate surface modification of IONPs can conquer these barriers with improved physicochemical properties. This review summarizes recent advances in the surface modification of IONPs with small organic molecules, polymers and inorganic materials. The preparation methods, mechanisms and applications of surface-modified IONPs with different materials are discussed...
October 9, 2018: Nanomaterials
https://www.readbyqxmd.com/read/30304810/gsk461364a-a-polo-like-kinase-1-inhibitor-encapsulated-in-polymeric-nanoparticles-for-the-treatment-of-glioblastoma-multiforme-gbm
#20
Praveena Velpurisiva, Brandon P Piel, Jack Lepine, Prakash Rai
Glioblastoma Multiforme (GBM) is a common primary brain cancer with a poor prognosis and a median survival of less than 14 months. Current modes of treatment are associated with deleterious side effects that reduce the life span of the patients. Nanomedicine enables site-specific delivery of active pharmaceutical ingredients and facilitates entrapment inside the tumor. Polo-like kinase 1 (PLK-1) inhibitors have shown promising results in tumor cells. GSK461364A (GSK) is one such targeted inhibitor with reported toxicity issues in phase 1 clinical trials...
October 9, 2018: Bioengineering
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