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Artificial Cells, Nanomedicine, and Biotechnology

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https://www.readbyqxmd.com/read/29141446/myocardial-reparative-functions-of-exosomes-from-mesenchymal-stem-cells-are-enhanced-by-hypoxia-treatment-of-the-cells-via-transferring-microrna-210-in-an-nsmase2-dependent-way
#1
Jinyun Zhu, Kai Lu, Ning Zhang, Yun Zhao, Qunchao Ma, Jian Shen, Yinuo Lin, Pingping Xiang, Yaoliang Tang, Xinyang Hu, Jinghai Chen, Wei Zhu, Keith A Webster, Jian'an Wang, Hong Yu
Hypoxia treatment enhances paracrine effect of mesenchymal stem cells (MSCs). The aim of this study was to investigate whether exosomes from hypoxia-treated MSCs (Exo(H)) are superior to those from normoxia-treated MSCs (Exo(N)) for myocardial repair. Mouse bone marrow-derived MSCs were cultured under hypoxia or normoxia for 24 h, and exosomes from conditioned media were intramyocardially injected into infarcted heart of C57BL/6 mouse. Exo(H) resulted in significantly higher survival, smaller scar size and better cardiac functions recovery...
November 16, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29130770/transition-state-analogue-imprinted-polymers-as-artificial-amidases-for-amino-acid-p-nitroanilides-morphological-effects-of-polymer-network-on-catalytic-efficiency
#2
Divya Mathew, Benny Thomas, K S Devaky
The morphology of the polymer network - porous/less porous - plays predominant role in the amidase activities of the polymer catalysts in the hydrolytic reactions of amino acid p-nitroanilides. Polymers with the imprints of stable phosphonate analogue of the intermediate of hydrolytic reactions were synthesized as enzyme mimics. Molecular imprinting was carried out in thermodynamically stable porogen dimethyl sulphoxide and unstable porogen chloroform, to investigate the morphological effects of polymers on catalytic amidolysis...
November 13, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29130769/neuroprotective-effects-and-uplc-q-tof-ms-based-active-components-identification-of-external-applied-a-novel-wen-luo-tong-microemulsion
#3
Hong-Mei Lin, Long-Fei Lin, Zhen-Zhen Xia, Yong Mao, Jia Liu, Ling-Yan Xu, Qing Wu
Chemotherapy induced neuropathy causes excruciating pain to cancer patients. Wen-Luo-Tong (WLT), a traditional Chinese medicinal compound, has been used to alleviate anti-cancer drug such as oxaliplatin-induced neuropathic pain for many years. However, the current route of administration of WLT is inconvenient and the active ingredients and mechanism of action of WLT are still unclear. To address these issues, we developed a novel formulation of WLT (W/O microemulsion) for the ease of application. New ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS) methods were employed for analysis of the ingredients...
November 13, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29130345/mir-199a-targeting-rock1-to-affect-kidney-cell-proliferation-invasion-and-apoptosis
#4
Zhigang Qin, Xin Wei, Ning Jin, Yao Wang, Rui Zhao, Yangqing Hu, Weijian Yan, Junke Li, Qiaoling Zhou
Renal cell carcinoma (RCC) is one of the three most common cancers of urinary tract cancer, accounting for 2-3% of all systemic cancers. Recent studies have found that miR-199a is lowly expressed in RCC, may act as a tumour suppressor gene to induce the occurrence of kidney cancer. In the present study, we investigated the role of miR-199a in the progression and metastasis of RCC. The results showed that miR-199a significantly downregulated in RCC and cell lines. Overexpression of miR-199a in RCC cell lines significantly inhibited cell proliferation, migration and invasion...
November 13, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29117721/enhanced-sciatic-nerve-regeneration-by-human-endometrial-stem-cells-in-an-electrospun-poly-%C3%AE%C2%B5-caprolactone-collagen-nbg-nerve-conduit-in-rat
#5
Forouzan Mohamadi, Somayeh Ebrahimi-Barough, Mohammad Reza Nourani, Korosh Mansoori, Majid Salehi, Ali Akbar Alizadeh, Seyed Mohammad Tavangar, Farshid Sefat, Siavash Sharifi, Jafar Ai
In recent years, for neurodegenerative diseases therapy, research has focused on the stem cells therapy. Due to promising findings in stem cell therapy, there are various sources of stem cells for transplantation in human. The aim of this study was to evaluate sciatic nerve regeneration in the rat after nerve transaction followed by human endometrial stem cells (hEnSCs) treatment into poly (e-caprolactone)/collagen/nanobioglass (PCL/collagen/NBG) nanofibrous conduits. After treatment of animals, the performance in motor and sensory tests, showed significant improvement in rats treated with hEnSCs as an autograft...
November 8, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29113504/enhancement-of-chemosensitivity-by-simultaneously-silencing-of-mcl-1-and-survivin-genes-using-small-interfering-rna-in-human-myelomonocytic-leukaemia
#6
Mahdi Jafarlou, Dariush Shanehbandi, Parvin Dehghan, Behzad Mansoori, F Othman, Behzad Baradaran
Acute myeloid leukaemia (AML) is a genetically heterogeneous, severe and rapidly progressing disease triggered by blocking granulocyte or monocyte differentiation and maturation. Overexpression of myeloid cell leukaemia-1 (Mcl-1) and Survivin is associated with drug resistance, tumour progression and inhibition of apoptotic mechanisms in leukaemia and several cancers. In the present study, we examined the combined effect of etoposide and dual siRNA-mediated silencing of Mcl-1 and Survivin on U-937 AML cells...
November 7, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29113502/osteogenic-and-antibacterial-properties-of-vancomycin-laden-mesoporous-bioglass-plga-composite-scaffolds-for-bone-regeneration-in-infected-bone-defects
#7
Tao Cheng, Haiyun Qu, Guoyou Zhang, Xianlong Zhang
Chronic osteomyelitis and infected bone defects are substantial challenges faced by orthopaedic surgeons. In this study, vancomycin was loaded into mesoporous bioactive glass (MBG) to form a local antibiotic delivery system and then a bone tissue-engineering scaffold combining MBG and poly-(L-lactic-co-glycolic acid) (PLGA) was prepared by freeze-drying fabrication. In vitro degradation and water contact angle analysis suggested that the MBG-incorporated PLGA scaffold exhibited controlled degradability, stabilizing the pH of the surrounding environment and improved the hydrophilicity...
November 7, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29113501/fabrication-of-niclosamide-loaded-solid-lipid-nanoparticles-in-vitro-characterization-and-comparative-in-vivo-evaluation
#8
Maqsood Ur Rehman, Mir Azam Khan, Waheed S Khan, Muhammad Shafique, Munasib Khan
Niclosamide (NCS) is an oral anthelminthic drug having low solubility and hence low bioavailability. Current investigation shows an approach to fabricate solid lipid nanoparticles (SLNs) of NCS and evaluated for pharmaceutical, in vitro and in vivo characterization. NFM-3 showed particle size 204.2 ± 2.2 nm, polydispersity index 0.328 ± 0.02 and zeta potential -33.16 ± 2 mV. Entrapment efficiency and drug loading capacity were 84.4 ± 0.02% and 5.27 ± 0.03%, respectively. Scanning electron microscopy image indicated that particles were nanoranged...
November 7, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29103326/polymerized-human-placenta-haemoglobin-attenuates-myocardial-injury-and-aortic-endothelial-dysfunction-in-a-rat-model-of-severe-burns
#9
Zhenyu Zhang, Yingyi Zhang, Yan Deng, Shen Li, Wentao Zhou, Chengmin Yang, Xuewen Xu, Tao Li
This study was designed to investigate the effect of polymerized human placenta haemoglobin (PolyPHb) on cardiac dysfunction after severe burns. A total of 60 male Sprague-Dawley rats were randomly divided into 3 groups: Sham, Burn and Burn + PolyPHb groups. Rats were subjected to third-degree burns to 30% of total body surface area and the haemodynamics, cardiac enzyme release and aortic endothelium ultrastructure/function were measured. PolyPHb (0.5 gHb/kg) greatly improved mean arterial pressure, left ventricular developed pressure (LVDP), maximum LVDP increase and decrease rate and reduced left ventricular end-diastolic pressure as compared to the Burn group...
November 6, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29103324/collagen-based-porous-scaffolds-containing-plga-microspheres-for-controlled-kartogenin-release-in-cartilage-tissue-engineering
#10
Xiaomin Sun, Jianhua Wang, Yingying Wang, Qiqing Zhang
A scaffold composed of different collagen (COL)/chitosan (CS)/hyaluronic acid sodium (HAS) salt ratios was evaluated by determining porosity, swelling, loss rate in hot water, mechanical property, and cell proliferation to obtain optimum conditions for manufacturing porous scaffolds. Results showed that the optimal ratio of COL/CS/HAS salt porous scaffold was 1:1:0.1. High swelling and loss rate of scaffolds/microspheres (MPs) could lead to high diffusion rate of MPs from the scaffolds, causing an increase in the kartogenin (KGN) release...
November 6, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29103319/in-vivo-evaluation-of-electron-mediators-for-the-reduction-of-methemoglobin-encapsulated-in-liposomes-using-electron-energies-produced-by-red-blood-cell-glycolysis
#11
Semhar Ghirmai, Leif Bülow, Hiromi Sakai
Earlier studies have clarified that NADH and NADPH, re-energized repeatedly by red blood cell (RBC) glycolysis, can be used in extracellular chemical reactions, where electron energies are extracted by electron mediators, such as methylene blue (MB). The electron mediators, which are reduced by NAD(P)H, permeate both the membranes of RBC and phospholipid bilayer of liposomes encapsulating haemoglobin (Hb-vesicles, HbV) and reduce autoxidized ferric methemoglobin (metHb) in HbV to ferrous Hb. Moreover, in vitro screening study clarified some other potential electron mediators with comparable capacity to reduce metHb...
November 6, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29103309/the-effect-of-nanofibre-based-polyethersulfone-pes-scaffold-on-the-chondrogenesis-of-human-induced-pluripotent-stem-cells
#12
Hossein Mahboudi, Masoud Soleimani, Seyed Ehsan Enderami, Mousa Kehtari, Hana Hanaee-Ahvaz, Hossein Ghanbarian, Mojgan Bandehpour, Shahrzad Nojehdehi Nojehdehi Sh, Samaneh Mirzaei, Bahram Kazemi
Human induced pluripotent stem cells (iPSCs) have been shown to have promising potential for regenerative medicine and tissue engineering applications. Chondrogenic differentiation of iPSCs is important for application in cartilage tissue engineering. In this study, we considered the effect of nanofibre-based polyethersulfone (PES) scaffold on the chondrogenesis of iPSCs. IPSC cells were cultured on the PES scaffold and scaffold free method. After 21 d, real-time PCR was performed to evaluate the cartilage-specific genes in the mRNA levels...
November 6, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29103306/significant-role-of-cationic-polymers-in-drug-delivery-systems
#13
Masoud Farshbaf, Soodabeh Davaran, Amir Zarebkohan, Nasim Annabi, Abolfazl Akbarzadeh, Roya Salehi
Cationic polymers are characterized as the macromolecules that possess positive charges, which can be either inherently in the polymer side chains and/or its backbone. Based on their origins, cationic polymers are divided in two category including natural and synthetic, in which the possessed positive charges are as result of primary, secondary or tertiary amine functional groups that could be protonated in particular situations. Cationic polymers have been employed commonly as drug delivery agents due to their superior encapsulation efficacy, enhanced bioavailability, low toxicity and improved release profile...
November 6, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29099241/in-vitro-and-in-vivo-delivery-of-gliclazide-loaded-mpeg-pcl-micelles-and-its-kinetic-release-and-solubility-study
#14
Hossein Danafar, Hoda Jaberizadeh, Sina Andalib
In this study, drug delivery system of gliclazide, a poorly soluble drug, was developed and evaluated in vitro and in vivo. We synthesized five series of mPEG-PCL di block copolymers. The structure of the copolymers was characterized by (1)H-NMR, Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and gel permeation chromatography (GPC) techniques. In this study, gliclazide was encapsulated within micelles through a single-step nano-precipitation method, leading to formation of gliclazide/mPEG-PCL micelles...
November 3, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29087225/development-and-evaluation-of-finasteride-loaded-ethosomes-for-targeting-to-the-pilosebaceous-unit
#15
Vinny Wilson, Karthik Siram, Selvakumar Rajendran, Veintramuthu Sankar
Androgenetic alopecia, a major cause for baldness, is caused by the deposition of dihydrotestosterone (DHT) at the androgen receptors present in the pilosebaceous unit (PSU). Finasteride (FIN) is a potent 5α-reductase inhibitor capable of preventing the conversion of testosterone to DHT. But, its oral administration in males causes infertility. An attempt was made to prepare ethosomes of FIN with a size range 100-300 nm to enhance its delivery to the PSU. Finasteride loaded ethosomes (FES) were prepared using an ultra-probe sonicator and characterized for its size, morphology, surface charge and entrapment efficiency...
October 31, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29087218/design-characterization-and-antimalarial-efficacy-of-pegylated-galactosylated-nano-lipid-carriers-of-primaquine-phosphate
#16
Uday Krishna Baruah, Kuppusamy Gowthamarajan, Vanka Ravisankar, Veera Venkata Satyanarayana Reddy Karri, Praveen Kumar Simhadri, Vineeta Singh, Phanithi Prakash Babu
This study was aimed to design and optimize primaquine phosphate (PQ) loaded nanostructured lipid carriers (NLCs) using response surface methodology. The optimized NLCs were evaluated for various physical and morphological characterizations. The in vitro studies for drug release showed that PQ loaded NLCs had a sustained release up to 72 h and the stability studies confirmed that the PQ-NLCs were stable for 90 d at 4 °C and 25 °C. In vitro erythrocyte toxicity revealed that PQ-NLCs were less toxic than the pure drug...
October 31, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29082766/new-developments-and-clinical-transition-of-hyaluronic-acid-based-nanotherapeutics-for-treatment-of-cancer-reversing-multidrug-resistance-tumour-specific-targetability-and-improved-anticancer-efficacy
#17
Muhammad Hassan Safdar, Zahid Hussain, Mohammed A S Abourehab, Humna Hasan, Sajal Afzal, Hnin Ei Thu
This review aims to overview and critically analyses recent developments in achieving tumour-specific delivery of anticancer agents, maximizing anticancer efficacy, and mitigating tumour progression and off-target effects. Stemming from critical needs to develop target-specific delivery vehicles in cancer therapy, various hyaluronic acid (HA)-conjugated nanomedicines have been fabricated owing to their biocompatibility, safety, tumour-specific targetability of drugs and genes, and proficient interaction with cluster-determinant-44 (CD44) receptors over-expressed on the surface of tumour cells...
October 30, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29082764/development-of-docetaxel-liposome-surface-modified-with-cd133-aptamers-for-lung-cancer-targeting
#18
Junzhe Ma, Huiru Zhuang, Zhixiang Zhuang, Yufeng Lu, Rui Xia, Lei Gan, Yuantao Wu
The aim of the present study was to prepare a novel CD133 aptamer modified DTX liposome system and investigate its characteristics in vitro and in vivo studies. In this study, the CD133-DTX LP was prepared by the thin-film hydration method and with the particle size of 100-120 nm. The TEM photomicrographs were smooth, sub-spherical in shape and aggregated to form small clusters. In vitro, a relatively slower DTX release profile was observed in CD133-DTX LP due to the presence of CD133 aptamers on the outer surface which might hinder the drug release...
October 30, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29081244/chitosan-delaying-human-fibroblast-senescence-through-downregulation-of-tgf-%C3%AE-signaling-pathway
#19
Ching-Wen Tsai, I-Ni Chiang, Jyh-Horng Wang, Tai-Horng Young
This study evaluated the effect of chitosan, poly vinyl alcohol (PVA) and poly (2-hydroxyethyl methacrylate) (pHEMA) on delaying the human fibroblast senescence. Cells could form suspending multicellular spheroids on these biomaterials, but only chitosan was capable of decreasing the SA β-gal activity and increasing the proliferation ability of senescent fibroblasts. Therefore, in addition to the structure of multicellular spheroids, chitosan itself should play an important role in delaying fibroblast senescence...
October 30, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29081256/ternary-complex-of-plasmid-dna-with-nls-mu-mu-protein-and-cationic-niosome-for-biocompatible-and-efficient-gene-delivery-a-comparative-study-with-protamine-and-lipofectamine
#20
Mohammad Hadi Nematollahi, Masoud Torkzadeh-Mahanai, Abbas Pardakhty, Hossein Ali Ebrahimi Meimand, Gholamreza Asadikaram
Non-viral gene delivery methods are considered due to safety and simplicity in human gene therapy. Since the use of cationic peptide and niosome represent a promising approach for gene delivery purposes we used recombinant fusion protein and cationic niosome as a gene carrier. A multi-domain fusion protein including nuclear localization motif (NLS) and two DNA-binding (Mu) domains, namely NLS-Mu-Mu (NMM) has been designed, cloned and expressed in E. coli DE3 strain. Afterward, the interested protein was purified by affinity chromatography...
October 28, 2017: Artificial Cells, Nanomedicine, and Biotechnology
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