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https://www.readbyqxmd.com/read/28445743/egfr-targeted-micelles-containing-near-infrared-dye-for-enhanced-photothermal-therapy-in-colorectal-cancer
#1
Ying-Hsia Shih, Tsai-Yueh Luo, Ping-Fang Chiang, Cheng-Jung Yao, Wuu-Jyh Lin, Cheng-Liang Peng, Ming-Jium Shieh
The purpose of this research was to investigate the effectiveness of epidermal growth factor receptor (EGFR) targeted micelles loaded with IR-780 (Cetuximab/IR-780/micelles) for generating tumor targeting, multimodal images, and photothermal therapy (PTT). We initially studied the cellular uptake of these micelles using the HCT-116 and SW-620 cell lines. HCT-116 (high expression of EGFR) and SW-620 (low expression of EGFR) cell lines were used to examine biodistribution and antitumor effects of Cetuximab/IR-780/micelles...
April 23, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28441471/gemcitabine-integrated-nano-prodrug-carrier-system
#2
Seren Hamsici, Melis Sardan Ekiz, Goksu Cinar Ciftci, Ayse Begum Tekinay, Mustafa O Guler
Peptide nanomaterials have received a great deal of interest in drug delivery applications due to their biodegradability, biocompatibility, suitability for large scale synthesis, high drug loading capacities, targeting ability and ordered structural organization. The covalent conjugation of drugs to peptide backbone results in prolonged circulation time and improved stability of drugs. Therapeutic efficacy of gemcitabine, which is used for breast cancer treatment, is severely compromised due to its rapid plasma degradation...
April 25, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28441008/simultaneous-detection-of-dual-prostate-specific-antigens-using-surface-enhanced-raman-scattering-based-immunoassay-for-accurate-diagnosis-of-prostate-cancer
#3
Ziyi Cheng, Namhyun Choi, Rui Wang, Sangyeop Lee, Kyung Chul Moon, Soo-Young Yoon, Lingxin Chen, Jaebum Choo
Accurate analysis of specific biomarkers in clinical serum is essential for early diagnosis and treatment of cancer. Here, a surface-enhanced Raman scattering (SERS)-based immunoassay, using magnetic beads and SERS nano tags, was developed for the determination of free to total (f/t) prostate specific antigen (PSA) ratio to improve the diagnostic performance of prostate cancer. To assess the clinical applicability of the proposed method, SERS-based assays for the simultaneous detection of dual PSA markers, free PSA (f-PSA) and complexed PSA (c-PSA), were performed for clinical samples in the gray zone between 4...
April 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28440967/toxicity-of-cisplatin-loaded-poly-butyl-cyanoacrylate-nanoparticles-in-a-brain-cancer-cell-line-anionic-polymerization-results
#4
Nejad Mohamadi, S Maryam Kazemi, Mahshid Mohammadian, Attabak Toofani Milani, Younes Moradi, Maryam Yasemi, Meysam Ebrahimi far, Maral Mazloumi Tabrizi, Hasan Ebrahimi Shahmabadi, Azim Akbarzadeh Khiyavi
Cancer is one of the most important issues in modern medicine and the most common cause of death after cardiovascular diseases in many countries. Brain cancer is one of the most common causes of cancer death among men and women, ranking third. Chemotherapeutic drugs that aim to prevent uncontrolled proliferation of cells in tissues of the body and induce apoptosis of tumor cells are prominent candidates for development. Since cisplatin has an apoptosisinducing role, it is widely used as an anticancer agent...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28440202/oral-nano-delivery-systems-for-colon-targeting-therapy
#5
Tianxu Zhang, Guanyin Zhu, Boyao Lu, Qiang Peng
Targeting drug delivery is an attractive research area, as it enables localized treatment, improves the efficacy of therapeutics and reduces systemic toxicity. Colon targeting delivery is particularly beneficial to the treatment of colon diseases, such as inflammatory bowel disease and colon cancer, due to the improved local drug concentrations. The traditional strategies for colon targeting delivery include time-dependent and pH-dependent technologies, etc. In recent years, nanotechnology has emerged as a novel and efficient tool for targeting drug delivery...
April 24, 2017: Pharmaceutical Nanotechnology
https://www.readbyqxmd.com/read/28433787/facile-encapsulation-of-hydroxycamptothecin-nanocrystals-into-zein-based-nanocomplexes-for-active-targeting-drug-delivery-and-cell-imaging
#6
Hongdi Wang, Wei Zhu, Yunna Huang, Zhixian Li, Yanbin Jiang, Qiuling Xie
Nano-drug delivery systems that integrate inorganic and organic or even bioactive components into a single nanoscale platform are playing a greatly important role in cancer treatment. Here, the fabrication of a versatile nanocarrier based on self-assembled structures of gold nanoparticles (AuNPs)-zein is reported, which displays high drug-loading efficiency for needle-shaped hydroxycamptothecin (HCPT) nanocrystals. The surface modification with folate-conjugated polydopamine (PFA) renders them stable and also facilitates their selective cellular internalization and enhancement of endocytosis...
April 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28433055/pyrenyl-carbon-nanostructures-for-ultrasensitive-measurements-of-formaldehyde-in-urine
#7
Gayan Premaratne, Sabrina Farias, Sadagopan Krishnan
Measurement of ultra-low (e.g., parts-per-billion) levels of small-molecule markers in body fluids (e.g., serum, urine, saliva) involves a considerable challenge in view of designing assay strategies with sensitivity and selectivity. Herein we report for the first time an amperometric nano-bioelectrode design that uniquely combines 1-pyrenebutyric acid units pi-pi stacked with carboxylated multiwalled carbon nanotubes on the surface of gold screen printed electrodes for covalent attachment of NAD(+) dependent formaldehyde dehydrogenase (FDH)...
June 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28431297/nano-zirconia-evaluation-of-its-antioxidant-and-anticancer-activity
#8
Siripireddy Balaji, Badal Kumar Mandal, Shivendu Ranjan, Nandita Dasgupta, Ramalingam Chidambaram
Bioactivity of nanomaterials largely depends on its size, shape and crystalline nature. In this work, the smaller sized spherical shaped nano-zirconia (ZrO2 NPs) (of ~9 to 11nm) was fabricated and studied its biological activity especially antioxidant and cytotoxicity against human colon carcinoma (HCT-116) and human lung carcinoma (A-549) cell lines. To have its real applications in biological aspects readily available Eucalyptus globulus (E. globulus) leaf extract was used as an effective capping and reducing agent for its synthesis...
April 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28428881/nano-pulse-stimulation-is-a-physical-modality-that-can-trigger-immunogenic-tumor-cell-death
#9
Richard Nuccitelli, Amanda McDaniel, Snjezana Anand, John Cha, Zachary Mallon, Jon Casey Berridge, Darrin Uecker
BACKGROUND: We have been developing a non-thermal, drug-free tumor therapy called Nano-Pulse Stimulation (NPS) that delivers ultrashort electric pulses to tumor cells which eliminates the tumor and inhibits secondary tumor growth. We hypothesized that the mechanism for inhibiting secondary tumor growth involves stimulating an adaptive immune response via an immunogenic form of apoptosis, commonly known as immunogenic cell death (ICD). ICD is characterized by the emission of danger-associated molecular patterns (DAMPs) that serve to recruit immune cells to the site of the tumor...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28427443/benserazide-a-dopadecarboxylase-inhibitor-suppresses-tumor-growth-by-targeting-hexokinase-2
#10
Wei Li, Mengzhu Zheng, Shuangping Wu, Suyu Gao, Mei Yang, Zhimei Li, Qiuxia Min, Weiguang Sun, Lixia Chen, Guangya Xiang, Hua Li
BACKGROUND: Hexokinase (HK) is the rate-limiting enzyme in the first reaction of glycolysis. And Hexokinase 2 (HK2) is most closely related to malignant tumor which expresses at higher level compared with normal cells. HK2 plays a pivotal role in tumor initiation and maintenance, which provides a new target for cancer therapy. METHODS: Structure-based virtual ligand screening was used in hit identification from ZINC Drug Database. Microscale thermophoresis assay was performed to evaluate the binding affinity...
April 20, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28427235/catan-ionic-hybrid-lipidic-nano-carriers-for-enhanced-bioavailability-and-anti-tumor-efficacy-of-chemodrugs
#11
Bilin Liu, Dan He, Jianyong Wu, Quan Sun, Mi Zhang, Qunyou Tan, Yao Li, Jingqing Zhang
To date there has not been any report on catan-ionic hybrid lipidic nano-carriers, let alone a report on applying them to deliver insoluble anti-tumor drugs. Catan-ionic hybrid lipidic nano-carriers containing curcumin (CUR-C-HLN) inherit the merits of catan-ionic systems, hybrid lipidic systems and nano-structured carriers (the second-generation substitute of solid lipidic nano-systems). Catan-ionic surfactants increased microvesicle stabilization by producing unordered isometric clusters, enhanced absorptive amount as an inhibitor of enzyme and protein, improved tumor accumulation by cellular endocytosis and membranous fusion; hybrid lipids helped to obtain high drug content and low leakage by forming a less-organized matrix arrangement...
March 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426974/cell-borne-2d-nanomaterials-for-efficient-cancer-targeting-and-photothermal-therapy
#12
Zhibin Li, Jundong Shao, Qian Luo, Xue-Feng Yu, Hanhan Xie, Haidi Fu, Siying Tang, Huaiyu Wang, Guangli Han, Paul K Chu
Two of the challenges for clinical implementation of nano-therapeutic strategies are optimization of tumor targeting and clearance of the nanoagents in vivo. Herein, a cell-mediated therapy by transporting 2D Bi2Se3 nanosheets within macrophage vehicles is described. The Bi2Se3 nanosheets with excellent near-infrared photothermal performance exhibit high macrophage uptake and negligible cytotoxicity thus facilitating the fabrication of Bi2Se3-laden-macrophages. Compared with bare Bi2Se3, the Bi2Se3-laden-macrophages after intravenous injection show prolonged blood circulation and can overcome the hypoxia-associated drug delivery barrier to target the tumor efficiently and dramatically enhance the efficiency of photothermal cancer therapy...
April 17, 2017: Biomaterials
https://www.readbyqxmd.com/read/28423731/a-multifunctional-lipid-nanoparticle-for-co-delivery-of-paclitaxel-and-curcumin-for-targeted-delivery-and-enhanced-cytotoxicity-in-multidrug-resistant-breast-cancer-cells
#13
Jong-Suep Baek, Cheong-Weon Cho
The objective of the work was to develop a multifunctional nanomedicine based on a folate-conjugated lipid nanoparticles loaded with paclitaxel and curcumin. The novel system combines therapeutic advantageous of efficient targeted delivery via folate and timed-release of curcumin and paclitaxel via 2-hydroxypropyl-ß-cyclodextrin, thereby overcoming multidrug resistance in breast cancer cells (MCF-7/ADR). The faster release of curcumin from the folate-conjugated curcumin and paclitaxel-loaded lipid nanoparticles enables sufficient p-glycoprotein inhibition, which allows increased cellular uptake and cytotoxicity of paclitaxel...
March 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423667/saline-is-a-more-appropriate-solution-for-microvesicles-for-flow-cytometric-analyses
#14
Xing Xin, Peiling Zhang, Xing Fu, Xia Mao, Fankai Meng, Ming Tian, Xiaojian Zhu, Hanying Sun, Li Meng, Jianfeng Zhou
Microvesicles (MVs) are carriers of molecular and oncogenic signatures present in subsets of tumor cells and tumor-associated stroma, and a focus of cancer research. Although methods to detect MVs are mature, we were concerned that the buffer used could lead to false results when quantitating MVs by flow cytometry. In this work,we detected MVs by flow cytometry withthree different solutions: water, saline, and phosphate-buffered saline (PBS). The results demonstrated that PBS, when reacted with annexin V binding buffer, produced nano-sized vesicles even when there were no MVs in the sample...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28419458/therapeutic-potential-of-novel-formulated-forms-of-curcumin-in-the-treatment-of-breast-cancer-by-the-targeting-of-cellular-and-physiological-dysregulated-pathways
#15
REVIEW
Amir Tajbakhsh, Malihe Hasanzadeh, Mehdi Rezaee, Mostafa Khedri, Majid Khazaei, Soodabeh Shahid Sales, Gordon A Ferns, Seyed Mahdi Hassanian, Amir Avan
Breast cancer is among the most important causes of cancer related death in women. There is a need for novel agents for targeting key signaling pathways to either improve the efficacy of the current therapy, or reduce toxicity. There is some evidence that curcumin may have antitumor activity in breast cancer. Several clinical trials have investigated its activity in patients with breast cancer, including a recent trial in breast cancer patients receiving radiotherapy, in whom it was shown that curcumin reduced the severity of radiation dermatitis, although it is associated with low bioavailability...
April 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28418679/bioresponsive-polyoxometalate-cluster-for-redox-activated-photoacoustic-imaging-guided-photothermal-cancer-therapy
#16
Dalong Ni, Dawei Jiang, Hector F Valdovinos, Emily B Ehlerding, Bo Yu, Todd E Barnhart, Peng Huang, Weibo Cai
Although various types of imaging agents have been developed for photoacoustic (PA) imaging, relatively few imaging agents exhibit high selectivity/sensitivity to the tumor microenvironment for on-demand PA imaging and therapy. Herein, molybdenum-based polyoxometalate (POM) clusters with the highest oxidation state of Mo(VI) (denoted as Ox-POM) were designed as novel agents for redox-activated PA imaging-guided photothermal therapy. Capable of escaping from recognition and capture by the liver and spleen, these renal clearable clusters with ultrasmall size (hydrodynamic size: 1...
April 20, 2017: Nano Letters
https://www.readbyqxmd.com/read/28417924/novel-nano-therapeutic-approach-actively-targets-human-ovarian-cancer-stem-cells-after-xenograft-into-nude-mice
#17
Amoura Abou-ElNaga, Ghada Mutawa, Ibrahim M El-Sherbiny, Hassan Abd-ElGhaffar, Ahmed A Allam, Jamaan Ajarem, Shaker A Mousa
The power of tumorigenesis, chemo-resistance and metastasis in malignant ovarian tumors resides in a tiny population of cancer cells known as ovarian cancer stem cells (OCSCs). Developing nano-therapeutic targeting of OCSCs is considered a great challenge. The potential use of poly(lactic-co-glycolic acid) nanoparticles (PLGA NPs) was investigated as a drug delivery system for paclitaxel (PTX) against OCSCs in vitro and in vivo. PTX-loaded PLGA NPs were prepared by an emulsion solvent evaporation method, supported by incorporation of folic acid (FA) as the ligand...
April 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28416470/block-ionomer-micellar-nanoparticles-from-double-hydrophilic-copolymers-classifications-and-promises-for-delivery-of-cancer-chemotherapeutics
#18
REVIEW
S S Abolmaali, A M Tamaddon, M Salmanpour, S Mohammadi, R Dinarvand
A class of double hydrophilic copolymers comprising ionic and nonionic water-soluble blocks, which are also called block ionomers, represent an interesting type of polymer assembly forming stable, homogeneous core-corona dispersions. They exhibit the solution behavior of normal polyelectrolytes, whereas assembly into micelle, vesicle or disk morphology happens by an external stimulus (pH, temperature or ionic strength) or complex formation with metal ions, ionic surfactants, polyelectrolytes, etc. Temperature, pH, redox or salt sensitivity affords a unique opportunity to control the triggered release of payloads accommodated through electrostatic interaction, coordination or chemical conjugation...
April 14, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28415455/heparin-modified-graphene-oxide-for-ph-sensitive-sustained-release-of-doxorubicin-hydrochloride
#19
Baomei Zhang, Xiaoye Yang, Yang Wang, Guangxi Zhai
A novel nanocarrier of heparin (Hep) modified graphene oxide (GO) was fabricated via a linker (adipic dihydrazide) and used as a pH-sensitive drug delivery system for controlling the release of anticancer drug doxorubicin (DOX) for anti-tumor therapy. The finally obtained nanocarrier was GO-ADH-Hep with better stability, blood compatibility and biocompatibility confirmed by the hemolytic test and in vitro cytotoxicity study. Its safety issue was greatly improved via Hep modification. The amount of DOX loaded onto GO-ADH-Hep was significantly high and dependent on pH value...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414908/experimental-computational-study-of-carbon-nanotube-effects-on-mitochondrial-respiration-in-silico-nano-qspr-machine-learning-models-based-on-new-raman-spectra-transform-with-markov-shannon-entropy-invariants
#20
Michael González-Durruthy, Luciane C Alberici, Carlos Curti, Zeki Naal, David T Atique-Sawazaki, José M Vázquez-Naya, Humberto González-Díaz, Cristian R Munteanu
The study of selective toxicity of carbon nanotubes (CNTs) on mitochondria (CNT-mitotoxicity) is of major interest for future biomedical applications. In the current work, the mitochondrial oxygen consumption (E3) is measured under three experimental conditions by exposure to pristine and oxidized CNTs (hydroxylated and carboxylated). Respiratory functional assays showed that the information on the CNT Raman spectroscopy could be useful to predict structural parameters of mitotoxicity induced by CNTs. The in vitro functional assays show that the mitochondrial oxidative phosphorylation by ATP-synthase (or state V3 of respiration) was not perturbed in isolated rat-liver mitochondria...
April 25, 2017: Journal of Chemical Information and Modeling
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