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https://www.readbyqxmd.com/read/28422481/gold-nanoparticles-induced-endothelial-leakiness-depends-on-particle-size-and-endothelial-cell-origin
#1
Magdiel I Setyawati, Chor Yong Tay, Boon Huat Bay, David T Leong
The endothelium presents a formidable barrier for cancer nanomedicine, as the intravenously introduced nanomedicine needs to leave the blood vessel at the tumor site. Endothelial permeability and retention effect (EPR) is not dependable since it is derived from tumors. Certain nanoparticles with specific characteristics are able to induce micrometer sized gaps between endothelial cells. This effect is called "nanoparticle induced endothelial leakiness" (NanoEL). NanoEL therefore allows the nanotechnology to control access to the tumor even in the absence of any EPR effect...
April 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/28416486/a-squalene-based-nanomedicine-for-oral-treatment-of-colon-cancer
#2
Larissa Kotelevets, Eric Chastre, Joachim Caron, Julie Mougin, Gerard Bastian, Alain Pineau, Francine Walker, Therese Lehy, Didier Desmaele, Patrick Couvreur
Nanotechnology offers many possibilities to improve drug treatments, including with regard to drug pharmacology. The current study reports a simple approach to improve cisplatin efficacy in the treatment of colon cancer through the creation of orally administered squalenoylated nanoparticles loaded with cisplatin (SQ-CDDP NP). Cytotoxic effects of SQ-CDDP NP were assessed in human colonic cells and in mouse models of intestinal cancer. In cell culture, SQ-CDDP NP exhibited at least 10-fold greater cytotoxic potency compared to uncomplexed cisplatin, reflecting an enhancement in intracellular accumulation and DNA platination...
April 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28412403/a-further-development-of-the-qnar-model-to-predict-the-cellular-uptake-of-nanoparticles-by-pancreatic-cancer-cells
#3
Feng Luan, Lili Tang, Lihong Zhang, Shuang Zhang, Maykel Cruz Monteagudo, M Natália D S Cordeiro
Nanotechnology has led to the development of new nanomaterials with unique properties and a wide variety of applications. In the present study, we focused on the cellular uptake of a group of nanoparticles with a single metal core by pancreatic cancer cells, which has been studied by Yap et al. (Rsc Advances, 2012, 2 (2):8489-8496) using classification models. In this work, the development of a further Quantitative Nanostructure-Activity Relationship (QNAR) model was performed by linear multiple linear regression (MLR) and nonlinear artificial neural network (ANN) techniques to accurately predict the cellular uptake values of these compounds by dividing them into three groups...
April 12, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28412324/nanoformulation-based-sequential-combination-cancer-therapy
#4
REVIEW
Gayong Shim, Mi-Gyeong Kim, Dongyoon Kim, Joo Yeon Park, Yu-Kyoung Oh
Although combining two or more treatments is regarded as an indispensable approach for effectively treating cancer, the traditional cocktail-based combination therapies are seriously limited by coordination issues that fail to account for differences in the pharmacokinetics and action sites of each drug. The careful manipulation of dosing regimens, such as by the sequential application of combination treatments, may satisfy the temporal and spatial needs of each drug and achieve successful combination antitumor therapy...
April 12, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28408882/targeted-nanotechnology-in-glioblastoma-multiforme
#5
REVIEW
Talita Glaser, Inbo Han, Liquan Wu, Xiang Zeng
Gliomas, and in particular glioblastoma multiforme, are aggressive brain tumors characterized by a poor prognosis and high rates of recurrence. Current treatment strategies are based on open surgery, chemotherapy (temozolomide) and radiotherapy. However, none of these treatments, alone or in combination, are considered effective in managing this devastating disease, resulting in a median survival time of less than 15 months. The efficiency of chemotherapy is mainly compromised by the blood-brain barrier (BBB) that selectively inhibits drugs from infiltrating into the tumor mass...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28400729/prostate-cancer-stem-cells-and-nanotechnology-a-focus-on-wnt-signaling
#6
REVIEW
Wei Qin, Yongjiang Zheng, Bin-Zhi Qian, Meng Zhao
Prostate cancer is the most common cancer among men worldwide. However, current treatments for prostate cancer patients in advanced stage often fail because of relapse. Prostate cancer stem cells (PCSCs) are resistant to most standard therapies, and are considered to be a major mechanism of cancer metastasis and recurrence. In this review, we summarized current understanding of PCSCs and their self-renewal signaling pathways with a specific focus on Wnt signaling. Although multiple Wnt inhibitors have been developed to target PCSCs, their application is still limited by inefficient delivery and toxicity in vivo...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28394410/nanotechnology-for-electroanalytical-biosensors-of-reactive-oxygen-and-nitrogen-species
#7
REVIEW
Rajesh Seenivasan, Charles Kolodziej, Chandran Karunakaran, Clemens Burda
Over the past several decades, nanotechnology has contributed to the progress of biomedicine, biomarker discovery, and the development of highly sensitive electroanalytical / electrochemical biosensors for in vitro and in vivo monitoring, and quantification of oxidative and nitrosative stress markers like reactive oxygen species (ROS) and reactive nitrogen species (RNS). A major source of ROS and RNS is oxidative stress in cells, which can cause many human diseases, including cancer. Therefore, the detection of local concentrations of ROS (e...
April 10, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28391865/a-novel-classification-of-prostate-specific-antigen-psa-biosensors-based-on-transducing-elements
#8
REVIEW
Mansoor Ani Najeeb, Zubair Ahmad, R A Shakoor, A M A Mohamed, Ramazan Kahraman
During the last few decades, there has been a tremendous rise in the number of research studies dedicated towards the development of diagnostic tools based on bio-sensing technology for the early detection of various diseases like cardiovascular diseases (CVD), many types of cancer, diabetes mellitus (DM) and many infectious diseases. Many breakthroughs have been developed in the areas of improving specificity, selectivity and repeatability of the biosensor devices. Innovations in the interdisciplinary areas like biotechnology, genetics, organic electronics and nanotechnology also had a great positive impact on the growth of bio-sensing technology...
June 1, 2017: Talanta
https://www.readbyqxmd.com/read/28391461/toxicological-assessment-of-tungsten-oxide-nanoparticles-in-rats-after-acute-oral-exposure
#9
Srinivas Chinde, Naresh Dumala, Mohammed Fazlur Rahman, Sarika Srinivas Kalyan Kamal, Srinivas Indu Kumari, Mohammed Mahboob, Paramjit Grover
Advances in and the rapid growth of the nanotechnology sector have escalated manufacture of nanoparticles (NPs), resulting in a significant increase in the probability of exposure of humans and wildlife to these materials. Many NPs have been found to exert genotoxicity. Therefore, genotoxicity studies are mandatory to assess the toxicity of NPs as a concern of succumbing to genetic diseases and cancers are universal. Tungsten oxide (WO3) NPs are being explored extensively in various fields. However, the toxicological data of WO3 NPs by oral route in mammals is limited...
April 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28388851/dna-rna-based-formulations-for-treatment-of-breast-cancer
#10
Zhaolu Xie, Xianghui Zeng
To develop a successful formulation for the gene therapy of breast cancer, an effective therapeutic nucleic acid and proper delivery system are essential. Increased understanding of breast cancer, and developments in biotechnology, material science and nanotechnology have provided a major impetus in the development of effective formulations for the gene therapy of breast cancer. Areas covered: We discuss DNA/RNA-based formulations that can inhibit the growth of breast cancer cells and control the progress of breast cancer...
April 7, 2017: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/28385267/a-review-on-hyperthermia-via-nanoparticle-mediated-therapy
#11
REVIEW
Ayesha Sohail, Zaki Ahmad, O Anwar Bég, Sarmad Arshad, Lubna Sherin
Hyperthermia treatment, generated by magnetic nanoparticles (MNPs) is promising since it is tumour-focused, minimally invasive and uniform. The most unique feature of magnetic nanoparticles is its reaction and modulation by a magnetic force basically responsible for enabling its potential as heating mediators for cancer therapy. In magnetic nanoparticle hyperthermia, a tumour is preferentially loaded with systemically administered nanoparticles with high-absorption cross-section for transduction of an extrinsic energy source to heat...
April 3, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/28382168/development-of-sialic-acid-coated-nanoparticles-for-targeting-cancer-and-efficient-evasion-of-the-immune-system
#12
Young-Hwa Kim, Kyung Hyun Min, Zhantong Wang, Jihoon Kim, Orit Jacobson, Peng Huang, Guizhi Zhu, Yijing Liu, Bryant Yung, Gang Niu, Xiaoyuan Chen
Evading the reticuloendothelial system (RES) remains a critical challenge in the development of efficient delivery and diagnostic systems for cancer. Sialic acid (N-acetylneuraminic acid, Neu5Ac) is recognized as a "self" marker by major serum protein complement factor H and shows reduced interaction with the innate immune system via sialic acid-binding immunoglobulin-like lectin (Siglec), which is known as one of the significant regulators of phagocytic evasion. Accordingly, we prepared different surface-modified gold nanoparticles (AuNPs) and investigated the effects of sialic acid on cellular and immune responses of nanoparticles in vitro and in vivo...
2017: Theranostics
https://www.readbyqxmd.com/read/28382158/phase-transitional-fe3o4-perfluorohexane-microspheres-for-magnetic-droplet-vaporization
#13
Ronghui Wang, Yang Zhou, Ping Zhang, Yu Chen, Wei Gao, Jinshun Xu, Hangrong Chen, Xiaojun Cai, Kun Zhang, Pan Li, Zhigang Wang, Bing Hu, Tao Ying, Yuanyi Zheng
Activating droplets vaporization has become an attractive strategy for ultrasound imaging and physical therapy due to the significant increase in ultrasound backscatter signals and its ability to physically damage the tumor cells. However, the current two types of transitional droplets named after their activation methods have their respective limitations. To circumvent the limitations of these activation methods, here we report the concept of magnetic droplet vaporization (MDV) for stimuli-responsive cancer theranostics by a magnetic-responsive phase-transitional agent...
2017: Theranostics
https://www.readbyqxmd.com/read/28377038/targeting-tumor-associated-macrophages-tams-via-nanocarriers
#14
REVIEW
Yuvraj Singh, Vivek Kumar Pawar, Jaya Gopal Meher, Kavit Raval, Animesh Kumar, Richa Shrivastava, Smrati Bhadauria, Manish K Chourasia
Recruitment of inflammatory cells to tumor has been well documented, with the most frequent inhabitants being macrophages termed as tumor associated macrophages, (TAMs). Their presence was thought to be an evidence of immune system initiating a fight response towards the tumor, i.e. immune surveillance. This is the case too initially, when TAMs majorly exhibit an M1 phenotype, but their continued presence in tumor microenvironment brings about their polarization to M2 phenotype, which not only participate in continued sustenance of existing tumor but also open up deleterious avenues for further progression and metastasis of cancer...
April 1, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28373128/rolling-circle-transcription-based-polymeric-sirna-nanoparticles-for-tumor-targeted-delivery
#15
Jae Hyeop Lee, Sook Hee Ku, Min Ju Kim, So Jin Lee, Hyun Cheol Kim, Kwangmeyung Kim, Sun Hwa Kim, Ick Chan Kwon
RNA, one of the major biological macromolecules, has been considered as an attractive building material for bottom-up fabrication of nanostructures in the past few decades due to advancements in RNA biology, RNA chemistry and RNA nanotechnology. Most recently, an isothermal enzymatic nucleic acid amplification method termed rolling circle transcription (RCT), which achieves a large-scale synthesis of RNA nanostructures, has emerged as one of fascinating techniques for RNAi-based therapies. Herein, we proposed a newly designed RCT method for synthesis of polymeric siRNA nanoflower, referred to 'RCT and annealing-generated polymeric siRNA (RAPSI)': (1) Amplification of the antisense strand of siRNA via RCT process and (2) annealing of chimeric sense strand containing 3'-terminal DNA nucleotides that provide enzyme cleavage sites...
March 31, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28370939/stent-mediated-gene-and-drug-delivery-for-cardiovascular-disease-and-cancer-a-brief-insight
#16
REVIEW
Akshaya Krishnagopal, Aakash Reddy, Dwaipayan Sen
AIM: This article concisely recapitulates the different existing modes of stent mediated gene/drug delivery, their considerable advancements in clinical trials and a rationale of other merging new technologies such as nanotechnology and microRNA based therapeutics, furthermore addressing the breach in each of these perpetual stent platforms. DISCUSSION: Over the past decade stent mediated gene/drug delivery have materialized as a hopeful alternative for cardiovascular disease and cancer in contrast to the routine conventional treatment modalities...
March 31, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28367517/evaluation-of-tumorigenic-potential-of-ceo2-and-fe2o3-engineered-nanoparticles-by-a-human-cell-in-vitro-screening-model
#17
Todd A Stueckle, Donna C Davidson, Raymond Derk, Tiffany G Kornberg, Diane Schwegler-Berry, Sandra V Pirela, Glen Deloid, Philip Demokritou, Sudjit Luanpitpong, Yon Rojanasakul, Liying Wang
With rapid development of novel nanotechnologies that incorporate engineered nanomaterials (ENMs) into manufactured products, long-term, low dose ENM exposures in occupational settings is forecasted to occur with potential adverse outcomes to human health. Few ENM human health risk assessment efforts have evaluated tumorigenic potential of ENMs. Two widely used nano-scaled metal oxides (NMOs), cerium oxide (nCeO2) and ferric oxide (nFe2O3) were screened in the current study using a sub-chronic exposure to human primary small airway epithelial cells (pSAECs)...
April 2017: NanoImpact
https://www.readbyqxmd.com/read/28361967/precise-photodynamic-therapy-of-cancer-via-subcellular-dynamic-tracing-of-dual-loaded-upconversion-nanophotosensitizers
#18
Yulei Chang, Xiaodan Li, Li Zhang, Lu Xia, Xiaomin Liu, Cuixia Li, Youlin Zhang, Langping Tu, Bin Xue, Huiying Zhao, Hong Zhang, Xianggui Kong
Recent advances in upconversion nanophotosensitizers (UCNPs-PS) excited by near-infrared (NIR) light have led to substantial progress in improving photodynamic therapy (PDT) of cancer. For a successful PDT, subcellular organelles are promising therapeutic targets for reaching a satisfactory efficacy. It is of vital importance for these nanophotosensitizers to reach specifically the organelles and to perform PDT with precise time control. To do so, we have in this work traced the dynamic subcellular distribution, especially in organelles such as lysosomes and mitochondria, of the poly(allylamine)-modified and dual-loaded nanophotosensitizers...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28356042/recent-advances-in-oncological-submissions-of-dendrimer
#19
Namrata Soni, Muktika Tekade, Prashant Kesharwani, Pallab Bhattacharya, Rahul Maheshwari, Kamal Dua, Philp M Hansbro, Rakesh Kumar Tekade
BACKGROUND: Disseminated metastatic cancer requires insistent management owing to its reduced responsiveness for chemotherapeutic agents, toxicity to normal cells consequently lower survival rate and hampered quality of life of patients. METHODS: Dendrimer mediated cancer therapy is advantageous over conventional chemotherapy, radiotherapy and surgical resection due to reduced systemic toxicity, and molecular level cell injury to cancerous mass, for an appreciable survival of the subject...
March 29, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28351128/nanoparticles-of-titanium-and-zinc-oxides-as-novel-agents-in-tumor-treatment-a-review
#20
Janusz Bogdan, Joanna Pławińska-Czarnak, Joanna Zarzyńska
Cancer has become a global problem. On all continents, a great number of people are diagnosed with this disease. In spite of the progress in medical care, cancer still ends fatal for a great number of the ill, either as a result of a late diagnosis or due to inefficiency of therapies. The majority of the tumors are resistant to drugs. Thus, the search for new, more effective therapy methods continues. Recently, nanotechnology has been attributed with big expectations in respect of the cancer fight. That interdisciplinary field of science creates nanomaterials (NMs) and nanoparticles (NPs) that can be applied, e...
December 2017: Nanoscale Research Letters
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