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Cancer therapy nano

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https://www.readbyqxmd.com/read/28915497/pegylated-polydopamine-coated-magnetic-nanoparticles-for-combined-targeted-chemotherapy-and-photothermal-ablation-of-tumour-cells
#1
Peng Xue, Lihong Sun, Qian Li, Lei Zhang, Jinhong Guo, Zhigang Xu, Yuejun Kang
The integration of multifunctional therapeutic capabilities into a single nanosystem has attracted much attention for use as an efficient cancer therapy. However, developing biocompatible therapeutic nano-agents with desirable safety, efficiency, targeting, and synergistic effects remains challenging. Herein, we designed a class of multifunctional PEGylated magnetic nanoparticles (NPs) with a core-shell structure and polydopamine (PDA) coating, which were loaded with the anticancer drug doxorubicin (DOX) for simultaneous targeted chemotherapy and photothermal ablation of tumour cells...
September 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28911299/in-silico-models-for-nanomedicine-recent-developments
#2
Pietro Mascheroni, Bernhard Aribo Schrefler
Nanomedicine is a recent promising setting for the advancement of current medical therapies, in particular for cancer. Nanoparticle-mediated therapies are aimed to tackle extremely complex phenomena, involving different biochemical, mechanical and biophysical factors. Computational models can contribute to medical research by helping the understanding of biological mechanisms and by providing quantitative analyses. In this work, we report on computational models that address four main issues related to the use of nanoparticles in anti-cancer therapies, namely the delivery of nanoparticles, their uptake by cells, the release of drugs from nano-platforms and nanoparticle-based therapeutics...
April 17, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28910676/porous-nh2-mil-125-as-an-efficient-nano-platform-for-drug-delivery-imaging-and-ros-therapy-utilized-low-intensity-visible-light-exposure-system
#3
Arunkumar Rengaraj, Pillaiyar Puthiaraj, Nam-Su Heo, Hoomin Lee, Seung Kyu Hwang, Soonjo Kwon, Wha-Seung Ahn, Yun-Suk Huh
Metal-organic frameworks are a novel class of organic-inorganic hybrid polymer with potential applications in bioimaging, drug delivery, and ROS therapy. NH2-MIL-125, which is a titanium-based metal organic framework with a large surface area of 1540m(2)/g, was synthesized using a hydrothermal method. The material was characterized by powder X-ray diffreaction (PXRD), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM), and N2 isotherm analyses. The size of the polymer was reduced to the nanoscale using a high-frequency sonication process...
September 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28902370/nano-let%C3%A2-7b-sensitization-of-eliminating-esophageal-cancer-stem%C3%A2-like-cells-is-dependent-on-blockade-of-wnt-activation-of-symmetric-division
#4
Yamei Pang, Jian Liu, Xiang Li, Yiwen Zhang, Boxiang Zhang, Jing Zhang, Ning Du, Chongwen Xu, Rui Liang, Hong Ren, Shou-Ching Tang, Xin Sun
The poor therapy response and poor prognosis of esophageal cancer has made it one of the most malignant carcinoma, and the complicated multidisciplinary treatment failed to achieve a long-term disease-free survival. To diagnose esophageal cancer at an earlier stage, and to improve the effect of anticancer therapy would improve the therapeutic efficacy. After retrospective analysis of the cancer samples of patients who received esophagectomy, we found the relevance between ratio of either ALDH1 or CD133-positive cancer stem cells and 2-year recurrence...
October 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28895735/reduction-sensitive-paclitaxel-prodrug-self-assembled-nanoparticles-with-tetrandrine-effectively-promote-synergistic-therapy-against-drug-sensitive-and-multidrug-resistant-breast-cancer
#5
Mengjuan Jiang, Ruoshi Zhang, Yingli Wang, Wenna Jing, Ying Liu, Yan Ma, Bingjun Sun, Menglin Wang, Peizhuo Chen, Hongzhuo Liu, Zhonggui He
Co-delivery of multiple drugs with complementary anticancer mechanisms by nano-carriers offers an effective strategy to treat cancers. Herein, conjugation (PTX-SS-VE) of paclitaxel (PTX) to vitamin E succinate (VE) self-assembled nanoparticles were used to load tetrandrine (TET) for combinational treatment against breast carcinoma. The ratio of PTX-SS-VE and TET was optimized. Compared with PTX, the TET/PTX-SS-VE co-loaded nanoparticles (TPNPs) demonstrated superior cytotoxicity against both MCF-7 cells and MCF-7/Adr cells...
September 12, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28888016/albumin-based-versatile-multifunctional-nanocarriers-for-cancer-therapy-fabrication-surface-modification-multimodal-therapeutics-and-imaging-approaches
#6
REVIEW
Ritu R Kudarha, Krutika K Sawant
Albumin is a versatile protein used as a carrier system for cancer therapeutics. As a carrier it can provide tumor specificity, reduce drug related toxicity, maintain therapeutic concentration of the active moiety like drug, gene, peptide, protein etc. for long period of time and also reduce drug related toxicities. Apart from cancer therapy, it is also utilized in the imaging and multimodal therapy of cancer. This review highlights the important properties, structure and types of albumin based nanocarriers with regards to their use for cancer targeting...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28886514/fabrication-of-polymer-matrix-free-nanocomposites-based-on-angelica-gigas-nakai-extract-and-their-application-to-breast-cancer-therapy
#7
Song Yi Lee, Jeong-Jun Lee, Suyeong Nam, Wie-Soo Kang, In-Soo Yoon, Hyun-Jong Cho
Nanocomposites (NCs) based on the ethanol extract of Angelica gigas Nakai (AGN EtOH ext) were developed for breast cancer therapy. Polymer matrix-free nano-sized particles based on the extract of natural product were fabricated using a modified emulsification-solvent evaporation method. Without the use of polymer matrix, toxicity can be minimized and the clinical application may be assured. AGN NCs with approximately 200nm mean diameter, narrow size distribution, and negative zeta potential were prepared in this study...
August 26, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28872851/erythrocyte-membrane-wrapped-ph-sensitive-polymeric-nanoparticles-for-non-small-cell-lung-cancer-therapy
#8
Lipeng Gao, Hao Wang, Lijuan Nan, Ting Peng, Lei Sun, Jinge Zhou, Ye Xiao, Jing Wang, Jihong Sun, Weiyue Lu, Lin Zhang, Zhiqiang Yan, Lei Yu, Yiting Wang
The application of nano drug delivery systems (NDDSs) may enhance the effectiveness of chemotherapeutic drugs in vivo. However, the short blood-circulating time and poor drug release profile in vivo are still two problems with them. Herein, by using red blood cell membrane (RBCm) wrapping and pH sensitive technology, we prepared RBCm wrapped pH sensitive poly (L-γ-glutamylcarbocistein)-paclitaxel (PGSC-PTX) nanoparticles (PGSC-PTX@RBCm NPs), to prolong the circulation time in blood and release PTX timely and adequately in acidic tumor environment...
September 5, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28865358/fabrication-of-all-trans-retinoic-acid-loaded-biocompatible-precirol-a-strategy-for-escaping-dose-dependent-side-effects-of-doxorubicin
#9
Mehdi Sabzichi, Jamal Mohammadian, Marjan Ghorbani, Somaiyeh Saghaei, Hadi Chavoshi, Fatemeh Ramezani, Hamed Hamishehkar
BACKGROUND: Drug delivery-based nanoparticles have been emerged to be an alternative and efficient approach to cancer therapy compared to conventional systems. Here, we investigated the role of all-trans retinoic acid (ATRA) formulated with precirol in increasing doxorubicin (Dox) induced apoptosis and cell cycle arrest in MDA-MB-231 breast cancer cells. METHODS: ATRA-loaded Nano structured lipid carriers (NLCs) were evaluated in terms of particle size, zeta potential, Fourier transforms infrared spectroscopy (FTIR), cell internalization, and scanning electron microscope (SEM)...
August 25, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28862054/lysosomal-targeting-strategies-for-design-and-delivery-of-bioactive-for-therapeutic-interventions
#10
Ankur Sharma, Kalpesh Vaghasiya, Eupa Ray, Rahul Kumar Verma
Lysosomes are of particular interest for the design and delivery of pH dependent pro-drugs, enhancing selectivity and developing strategies to inhibit drug degradation inside the cells. There is great potential to bring intracellular drug delivery and distribution using nano-therapeutic approaches to target lysosomes for therapeutic interventions. Lysosomal targeting strategies involve two contrasting facets. One aspect is to directly target therapeutics to the lysosome through receptor-mediated endocytosis and the other facet involves strategies, which ensure escape from the lysosome in order to prevent their degradation, so that therapeutics may remain intact and available in the cytosol for their further action...
September 1, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28860472/transferrin-navigation-nano-artificial-antibody-fluorescence-recognition-of-circulating-tumor-cells
#11
Wei Zhang, Jiaoyang Wang, Ping Li, Chuanchen Wu, Hongyan Zhang, Wen Zhang, Hui Wang, Bo Tang
Specific recognition of circulating tumor cells (CTCs) is of great significance for cancer diagnosis and personalized therapy. The antibodies and aptamer are commonly used for recognition of CTCs, but they often suffer from low stability and high cost. Therefore, chemically stable and low-cost artificial recognition elements are still highly demanded. Herein, we prepared nano artificial antibody based on molecular imprinting and applied for fluorescence recognition of CTCs. Surface imprinting was employed to construct a transferrin (TRA)-imprinted layer on the surface of rhodamine doped silica nanoparticles...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28852775/natural-agents-mediated-targeting-of-histone-deacetylases
#12
REVIEW
Ammad Ahmad Farooqi, Syed Kamran-Ul-Hassan Naqvi, Aliye Aras Perk, Onur Yanar, Sobia Tabassum, Muhammad Sheeraz Ahmad, Qaisar Mansoor, Mohamed S Ashry, Muhammad Ismail, George E Naoum, Waleed O Arafat
In the past few years, basic and clinical scientists have witnessed landmark achievements in many research projects, such as those conducted by the US National Institutes of Health Roadmap Epigenomics Mapping Consortium, the International Human Epigenome Consortium, The Cancer Genome Atlas Network and the International Cancer Genome Consortium, which have provided near-complete resolution of epigenetic landscape in different diseases. Furthermore, genome sequencing of tumors has provided compelling evidence related to frequent existence of mutations in readers, erasers and writers of epigenome in different cancers...
August 30, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28851367/role-of-exosomal-proteins-in-cancer-diagnosis
#13
REVIEW
Weihua Li, Chuanyun Li, Tong Zhou, Xiuhong Liu, Xiaoni Liu, Xiuhui Li, Dexi Chen
Exosomes are emerging as a new type of cancer biomarkers. Exosome is a bilayered nano-sized vesicle secreted by various living cells in all body fluids. Based on the expanding albeit incomplete knowledge of their biogenesis, secretion by cells and cancer cell-specific molecular and genetic contents, exosomes are viewed as promising, clinically-relevant surrogates of cancer progression and response to therapy. Preliminary proteomic, genetic and functional profiling of cancer cell-derived or cancer plasma-derived exosomes confirms their unique characteristics...
August 29, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28844757/chemotherapy-agent-unsaturated-fatty-acid-prodrugs-and-prodrug-nanoplatforms-for-cancer-chemotherapy
#14
REVIEW
Bingjun Sun, Cong Luo, Weiping Cui, Jin Sun, Zhonggui He
Unsaturated fatty acids (UFAs), with the distinct advantages of good biocompatibility and innate tumor-targeting effect, have been widely investigated for the rational design of chemotherapy agent-unsaturated fatty acid (CA-UFA) prodrugs in cancer therapy. Among them, several CA-UFA prodrugs have successfully entered clinical trials and are promising prospects for potential clinical applications. In addition, CA-UFA prodrug-based nanoparticulate drug delivery systems (nano-DDS), which integrate the advantages of CA-UFA prodrugs and nano-DDS, have been emerging as versatile nano-carriers for the efficient delivery of chemotherapeutics...
August 26, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28843722/macrophage-cell-derived-exosomes-staphylococcal-enterotoxin-b-against-fibrosarcoma-tumor
#15
Elham Behzadi, Hamideh Mahmoodzadeh Hosseini, Raheleh Halabian, Abbas Ali Imani Fooladi
Targeted immune therapies are a modern approach to harness the immunity to treat cancer patients. Exosomes (EXOs) are nano-vesicles used for drug delivery in cancer treatment. We aimed to assess the effectiveness of novel designed EXO structures for immunotherapy alone and in combination with other components in animal models. EXO derived from untreated macrophage (EXO), WEHI-164 cell lysate treated EXO (EXOLys), HSP70 enriched WEHI-164 cell lysate treated EXO (EXOHSP70), Naloxone (NLX) treated EXO (EXONLX), Propranolol (PRP) treated EXO (EXOPRP) and staphylococcal enterotoxin B (SEB) anchored to three kinds of EXOs designated as EXO/SEB, EXOLys/SEB, EXOHSP70/SEB were purified from J774 cell line...
August 24, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28841777/free-blockage-mesoporous-anticancer-nanoparticles-based-on-ros-responsive-wetting-behavior-of-nanopores
#16
Yaya Cheng, Xiangyu Jiao, Tailin Xu, Wenqian Wang, Yu Cao, Yongqiang Wen, Xueji Zhang
To achieve an excellent delivery effect of drug, stimuli-responsive nano "gate" with physical blockage units is usually constructed on the surface of the mesoporous silica nanocarriers (MSNs). In nature, the aquaporins in cell membrane can control the transport of water molecules by regulating the channel wettability, which is resulted from the conformational change of amino acids in the channel. Inspired by this phonomenon, herein a new concept of free-blockage controlled release system is proposed, which is achieved by controlling the wettability of the internal surface of nanopores on MSNs...
August 25, 2017: Small
https://www.readbyqxmd.com/read/28832164/tumor-targeting-micelles-based-on-linear-dendritic-peg-ptx8-conjugate-for-triple-negative-breast-cancer-therapy
#17
Yujie Zhang, Yifei Lu, Yu Zhang, Xi He, Qinjun Chen, Lisha Liu, Xinli Chen, Chunhui Ruan, Tao Sun, Chen Jiang
Most small molecular chemotherapeutics have poor water-solubility, unexpected pharmacokinetics and toxicity to normal tissues. A series of nano drug delivery systems have been developed to solve the problems, among which micelle based on linear-dendritic polymer-drug conjugates (LDPDCs) is a promising strategy to deliver hydrophobic chemotherapeutics due to its small size, fine stability in blood circulation and high drug loading capacity. In this work we synthesized a novel amphiphilic linear-dendritic PEG-PTX8 conjugate which can also encapsulate extra free PTX and self-assemble into uniform ultra-small micelles with a hydrated diameter of 25...
August 23, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28831911/nanoparticle-based-drugs-an-armament-for-effective-anti-cancer-therapy
#18
Khurshid Ahmad, Gulam Rabbani, Mohammad Hassan Baig, Jeong Ho Lim, Mohammad Ehtisham Khan, Eun Ju Lee, Ghulam Md Ashraf, Inho Choi
Cancer is known to be a foremost cause of mortality worldwide. Available treatments (radiation, hormone, chemotherapy, and immunotherapy) being non-specific and unable to cross biological barriers, have restricted their use producing in humans. With greater side effects, there is a change in trend towards exploration of nano-technological approaches to achieve site specific delivery of drugs. Nanoparticles being unique on nanometer-scale size and large surface to volume ratio, are highly efficient in the delivery of potent drugs to specific tumor sites...
August 22, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28819454/a-novel-mpeg-pdlla-pll-copolymer-for-docetaxel-delivery-in-breast-cancer-therapy
#19
Liwei Tan, Jinrong Peng, Qian Zhao, Lan Zhang, Xichuan Tang, Lijuan Chen, Minyi Lei, Zhiyong Qian
Satisfactory drug loading capacity and stability are the two main factors that determine the anti-cancer performance. In general, the stability of the micelles is reduced when the drug loading (DL) is increased. Therefore, it was a challenge to have high drug loading capacity and good stability. In this study, we introduced a hydrophilic poly (L-Lysine) (PLL) segment with different molecular-weights into the monomethoxy poly (ethylene glycol)-poly (D, L-lactide) (MPEG-PDLLA) block copolymer to obtain a series of novel triblock MPEG-PDLLA-PLL copolymers...
2017: Theranostics
https://www.readbyqxmd.com/read/28807238/unravelling-the-complexity-of-signalling-networks-in-cancer-a-review-of-the-increasing-role-for-computational-modelling
#20
REVIEW
John Garland
Cancer induction is a highly complex process involving hundreds of different inducers but whose eventual outcome is the same. Clearly, it is essential to understand how signalling pathways and networks generated by these inducers interact to regulate cell behaviour and create the cancer phenotype. While enormous strides have been made in identifying key networking profiles, the amount of data generated far exceeds our ability to understand how it all "fits together". The number of potential interactions is astronomically large and requires novel approaches and extreme computation methods to dissect them out...
September 2017: Critical Reviews in Oncology/hematology
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