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Cancer therapy nano

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https://www.readbyqxmd.com/read/28629893/a-new-nir-triggered-dox-and-icg-co-delivery-system-for-enhanced-multidrug-resistant-cancer-treatment-through-simultaneous-chemo-photothermal-photodynamic-therapy
#1
Yanna Yu, Zhipeng Zhang, Yun Wang, Hao Zhu, Fangzhou Li, Yuanyuan Shen, Shengrong Guo
It is a great challenge to combat multidrug resistant (MDR) cancer effectively. To address this issue, we developed a new near-infrared (NIR) triggered chemotherapeutic agent doxorubicin (DOX) and photosensitizer indocyanine green (ICG) co-release system by aid of NIR induced photothermal effect of gold nanocages (AuNCs) and temperature sensitive phase-change property of 1-tetradecanol at its melting point of 39°C, which could simultaneously exerted chemo/photothermal/photodynamic treatment on MDR human breast cancer MCF-7/ADR cells...
June 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28627697/cancer-drug-delivery-in-the-nano-era-an-overview-and-perspectives-review
#2
Zhen Li, Shirui Tan, Shuan Li, Qiang Shen, Kunhua Wang
Nanomaterials are increasingly used as drug carriers for cancer therapy. Nanomaterials also appeal to researchers in the areas of cancer diagnosis and biomarker discovery. Several antitumor nanodrugs are currently being tested in preclinical and clinical trials and show promise in therapeutic and other settings. We review the development of nanomaterial drug carriers, including liposomes, polymer nanoparticles, dendritic polymers, and nanomicelles, for the diagnosis and treatment of various cancers. The prospects of nanomaterials as drug carriers for future clinical applications are also discussed...
June 14, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28622690/exploiting-cancer-s-phenotypic-guise-against-itself-targeting-ectopically-expressed-peptide-g-protein-coupled-receptors-for-lung-cancer-therapy
#3
REVIEW
Mahjabin Khan, Tao Huang, Cheng-Yuan Lin, Jiang Wu, Bao-Min Fan, Zhao-Xiang Bian
Lung cancer, claiming millions of lives annually, has the highest mortality rate worldwide. This advocates the development of novel cancer therapies that are highly toxic for cancer cells but negligibly toxic for healthy cells. One of the effective treatments is targeting overexpressed surface receptors of cancer cells with receptor-specific drugs. The receptors-in-focus in the current review are the G-protein coupled receptors (GPCRs), which are often overexpressed in various types of tumors. The peptide subfamily of GPCRs is the pivot of the current article owing to the high affinity and specificity to and of their cognate peptide ligands, and the proven efficacy of peptide-based therapeutics...
June 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28621369/transport-of-nanoparticles-across-pulmonary-surfactant-monolayer-a-molecular-dynamics-study
#4
Yan Xu, Li Deng, Hao Ren, Xianren Zhang, Fang Huang, Tongtao Yue
Pulmonary nanodrug delivery is an emerging concept, especially for targeted lung cancer therapy. Once inhaled, the nanoparticles (NPs) acting as drug carriers need to efficiently cross the pulmonary surfactant monolayer (PSM) of lung alveoli, which act as the first barrier for external particles entering the lung. Herein, by performing molecular dynamics simulations, we study how inhaled NPs interact with the PSM, particularly focusing on the transport of NPs with different properties across the PSM. While hydrophilic NPs translocate directly across the PSM, transport of hydrophobic NPs is achieved as the PSM wraps them...
June 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28618135/self-assembled-nano-immunostimulant-for-synergistic-immune-activation
#5
Zhan-Yi Sun, Pu-Guang Chen, Yan-Fang Liu, Lei Shi, Bo-Dou Zhang, Jun-Jun Wu, Yu-Fen Zhao, Yong-Xiang Chen, Yan-Mei Li
Immunotherapy has become one of the most promising therapies for the treatment of diseases. Chemical molecule immunostimulants and nanomaterial immunostimulant systems are indispensable for the activation of the immune system in cancer immunotherapy. Here we report a strategy of self-assembled nano-immunostimulant (SANI) for synergistic immune activation. Three immunostimulants self-assembled into nanoparticles through electrostatic interactions. SANI showed strong synergistic immunostimulation in macrophages...
June 15, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28614621/synthetic-nucleic-acid-analogues-in-gene-therapy-an-update-for-peptide-oligonucleotide-conjugates
#6
Maria Taskova, Anna Mantsiou, Kira Astakhova
The main objective of this work is an update on synthetic nucleic acid analogues and nano-assemblies as tools in gene therapy. In particular, we describe in detail the synthesis and properties of peptide-oligonucleotide conjugates, POCs, which according to us and others have high potential in research and as therapeutics. The exploration of POCs has already led to fruitful results in the treatment of neurological diseases, lung disorders, cancer, leukemia, viral and bacterial infections. However, delivery and in vivo stability are the major barriers to the clinical application of POCs and other analogues that still have to be overcome...
June 14, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28614069/pegylated-lipid-bilayer-wrapped-nano-graphene-oxides-for-synergistic-co-delivery-of-doxorubicin-and-rapamycin-to-prevent-drug-resistance-in-cancers
#7
Raj Kumar Thapa, Jeong Hoon Byeon, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
Nano-graphene oxide (nGO) is a carbon allotrope studied for its potential as carrier for chemotherapeutic delivery and its photoablation effects. However, interaction of nGO with blood components and the subsequent toxicities warrant a hybrid system for effective cancer drug delivery. Combination chemotherapy aids in effective cancer treatment and prevention of drug resistance. Therefore, in this study, we attempted to prepare polyethylene glycosylated (PEGylated) lipid bilayer-wrapped nGO co-loaded with doxorubicin (DOX) and rapamycin (RAPA), GOLDR, for the prevention and treatment of resistant cancers...
June 14, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28606739/covalent-nanodelivery-systems-for-selective-imaging-and-treatment-of-brain-tumors
#8
Julia Y Ljubimova, Tao Sun, Leila Mashouf, Alexander V Ljubimov, Liron L Israel, Vladimir A Ljubimov, Vida Falahatian, Eggehard Holler
Nanomedicine is a rapidly evolving form of therapy that holds a great promise in superior drug delivery efficiency and therapeutic efficacy than conventional cancer treatment. In this review, we attempt to cover the benefits and the limitations of current nanomedicines with special attention to covalent nanoconjugates for imaging and drug delivery in brain. The improvement in brain tumor treatment remains dismal despite decades of efforts in drug development and patient care. One of the major obstacles in brain cancer treatment is the poor drug delivery efficiency owing to the unique blood-brain-barrier (BBB) in the CNS...
June 9, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28600977/targeting-epithelial-mesenchymal-transition-metal-organic-network-nano-complexes-for-preventing-tumor-metastasis
#9
Jin-Xuan Fan, Di-Wei Zheng, Lei Rong, Jing-Yi Zhu, Sheng Hong, Cao Li, Zu-Shun Xu, Si-Xue Cheng, Xian-Zheng Zhang
Tumor metastasis is the leading cause of death in cancer patients, and epithelial-mesenchymal transition (EMT) is an essential step in tumor metastasis. Unfortunately, during the chemotherapy, EMT could be induced under the selective pressure of clinical cytotoxic drugs. Here, to solve this problem, we have synthesized multi-functional epigallocatechin gallate/iron nano-complexes (EIN) as a versatile coating material to improve conventional therapies. In vitro studies showed that this strategy could eliminate EMT-type cancer cells...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28600223/-nano-in-nano-hybrid-liposomes-increase-target-specificity-and-gene-silencing-efficiency-in-breast-cancer-induced-scid-mice
#10
Dhiraj Bhavsar, Krishnakumar Subramanian, Swaminathan Sethuraman, Uma Maheswari Krishnan
Gene silencing has immense potential in the treatment of cancer. However, enhancement of its efficiency requires the development of specifically targeted and safe carrier systems. Cationic carriers are generally limited by their immunogenicity. Hence, in this study, we report hybrid liposomes encapsulating Poly (L-lysine)-siRNA complex to silence epithelial cell adhesion molecule (EpCAM), highly expressed in epithelial cancers. The hybrid liposomes LL1 (Egg PC:DSPE-PEG, 10:0) and hybrid immunoliposomes LL2 (Egg PC:DSPE-PEG, 8:2) linked with EpCAM antibody as the targeting ligand showed an encapsulation efficiency of 70% and 86%, respectively...
June 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28595539/targeted-drug-delivery-systems-and-its-therapeutic-applications-in-cancer-and-related-immune-pathological-conditions
#11
Saifullah Afridi, Jamshed Iqbal, Fareeha Anwar
BACKGROUND: Earlier a century ago, Paul Ehrlich proposed an idea of a drug "magic bullet" that selectively eradicate diseased cells without harming the surrounding normal cells. OBJECTIVE: Since a lot of progress has been attained in this field to discover new horizons for targeted delivery of drug. As major problem in disease therapy is the severe toxic effects of prescribed drugs on healthy cells. In order to reduce the adverse effects of chemotherapy on healthy tissues, herein, we summaries the use of recent drug delivery systems for targeted therapy...
June 5, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28591594/oleanolic-bioenhancer-coloaded-chitosan-modified-nanocarriers-attenuate-breast-cancer-cells-by-multimode-mechanism-and-preserve-female-fertility
#12
Monika Sharma, Shweta Sharma, Vikas Sharma, Komal Sharma, Santosh Kumar Yadav, Pankaj Dwivedi, Satish Agrawal, Sarvesh Kumar Paliwal, Anil Kumar Dwivedi, Jagdamba Prasad Maikhuri, Gopal Gupta, Prabhat Ranjan Mishra, Ajay Kumar Singh Rawat
Addressing multidrug resistant stage of breast cancer is an impediment for chemotherapy. Moreover, breast cancer chemotherapy has potential enduring confrontations i.e. related toxicity including effect on fertility of young female patients. The co-delivery of polyphenolic bio-enhancers with oleanolic acid in chitosan coated PLGA nanoparticles was designed for oral delivery with enhanced antitumor effect consecutively preserving the female fertility. The optimized oleanolic- bio-enhancer nano formulation CH-OA-B-PLGA with particle size was 342...
June 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28584991/nanoparticle-based-mycosis-vaccine
#13
Swaleha Zubair, Asim Azhar, Nazoora Khan, Ejaj Ahmad, Mohd Ajmal, Mohammad Owais
Many diseases that were considered major affliction of mankind in the past have been successfully eradicated with introduction of appropriate vaccine strategies. In order to expedite new challenges coming up to deal with various infectious diseases, nano-particulate-based subunit vaccines seem to be the demand of ordeal. The nano-vaccines can find better scope for the diseases that were not rampant in the semi-advanced world few years back. For example in present-day circumstances that corroborate with advancement in the field of medical sciences in terms of cancer chemotherapy, organ transplantation, therapy of autoimmune diseases, etc...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28584572/journey-of-trail-from-bench-to-bedside-and-its-potential-role-in-immuno-oncology
#14
REVIEW
George E Naoum, Donald J Buchsbaum, Fady Tawadros, Ammad Farooqi, Waleed O Arafat
Induction of apoptosis in cancer cells has increasingly been the focus of many therapeutic approaches in oncology field. Since its identification as a TNF family member, TRAIL (TNF-related apoptosis-inducing ligand) paved a new path in apoptosis inducing cancer therapies. Its selective ability to activate extrinsic and intrinsic cell death pathways in cancer cells only, independently from p53 mutations responsible for conventional therapeutics resistance, spotted TRAIL as a potent cancer apoptotic agent. Many recombinant preparations of TRAIL and death receptor targeting monoclonal antibodies have been developed and being tested pre-clinically and clinically both as a single agent and in combinations...
March 3, 2017: Oncology Reviews
https://www.readbyqxmd.com/read/28580979/design-of-tpgs-functionalized-cu3bis3-nanocrystals-with-strong-absorption-in-the-second-near-infrared-window-for-radiation-therapy-enhancement
#15
Jiangfeng Du, Xiaopeng Zheng, Yuan Yong, Jie Yu, Xinghua Dong, Chenyang Zhang, Ruyi Zhou, Bai Li, Liang Yan, Chunying Chen, Zhanjun Gu, Yuliang Zhao
Integrating radiation therapy with high-depth photothermal therapy in the second near-infrared (NIR) window is highly required for efficient treatment of deep-seated tumor cells. Here, we constructed a multifunctional nano-theranostic with bimetallic chalcogenide nanocrystals (NCs) functionalized with amphiphilic d-α-tocopherol polyethylene glycol 1000 succinate (TPGS-Cu3BiS3). Benefiting from the strong absorbance of both X-ray and NIR light in the second NIR window, TPGS-Cu3BiS3 CNs can not only deposit more radiation dose to trigger enhanced radiation damage in vivo, but also conduct photo-induced hyperthermia for thermal ablation in the second NIR window and effective improvement of tumor oxygenation to overcome the hypoxia-associated radio-resistance of tumors...
June 5, 2017: Nanoscale
https://www.readbyqxmd.com/read/28578975/ph-sensitive-drug-delivery-system-based-on-hydrophobic-modified-konjac-glucomannan
#16
Jinling Luan, Kao Wu, Cao Li, Jia Liu, Xuewen Ni, Man Xiao, Yanglin Xu, Ying Kuang, Fatang Jiang
Amphiphilic aliphatic amines grafted konjac glucomannan (KGM-g-AH8, KGM-g-AH12 and KGM-g-AH18) micelles were prepared via a simple two-step synthesis with Schiff's base as the "switch" to achieve intracellular acid-triggered curcumin release. The KGM-g-AH8 self-assembled into spherical nano-micelles (107.6±11.6nm) in an aqueous medium, and presented high curcumin loading capacity as well as good physical stability in 28 days. The in vitro curcumin release behaviors proved the controlled release property and the endosomal/lysosomal pH response of KGM-g-AH8 micelles...
September 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28576066/designing-of-macroporous-magnetic-bioscaffold-based-on-functionalized-methacrylate-network-covered-by-hydroxyapatites-and-doped-with-nano-mgfe2o4-for-potential-cancer-hyperthermia-therapy
#17
Łukasz John, Mateusz Janeta, Sławomir Szafert
In this paper, we report on synthesis and characterization of three-dimensional biocomposite based on a polymerized 3-(trimethoxysilyl)propyl methacrylate/ethylene glycol dimethacrylate (pTMSPMA/pEGDMA) framework. The resulting composite was doped with Ca(2+) and PO4(3-) or decorated by hydroxyapatite (HA) and carbonate hydroxyapatite (CHA) to aid potential bone fixation and the in vitro bioactivity was evaluated. During the construction of the macroporous scaffold, the size and shape of pores were modified depending on the type of porogens which was applied (commercially available sugar, NaCl, or NH4Cl)...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28576058/colloidal-properties-and-in-vitro-evaluation-of-hydroxy-ethyl-cellulose-coated-iron-oxide-particles-for-targeted-drug-delivery
#18
Maide Gökçe Bekaroğlu, Yavuz İşçi, Sevim İşçi
In this study, superparamagnetic iron oxide (Fe3O4) nanoparticles were prepared for the targeted drug delivery applications by controlling the colloidal properties with a cellulosic polymer that is Hydroxy ethyl cellulose (HEC). Fe3O4 particles were treated with HEC in a variable range of polymer concentration. Rheological, electrokinetic, magnetorheological and morphological properties of the dispersions were investigated to have stable and fully covered surfaces of Fe3O4 particles by coating with HEC and obtaining non-toxic biocompatible multifunctional magnetic particles...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28575982/acid-degradable-carboxymethyl-chitosan-nanogels-via-an-ortho-ester-linkage-mediated-improved-penetration-and-growth-inhibition-of-3-d-tumor-spheroids-in-vitro
#19
Qian Zha, Xin Wang, Xu Cheng, Shengxiang Fu, Guanqing Yang, Weijing Yao, Rupei Tang
This work describes an acid-degradable and tumor-targeted nanogels prepared by the copolymerization between lactobionic acid-modified methacrylated carboxymethyl chitosan and acid-labile methacrylated orthoester-based monomers. The size distribution and micromorphology of the prepared nanogels were observed by dynamic light scattering, transmission electron microscopy and scanning electron microscopy. The stability of nanogels in various environments was then investigated. Doxorubicin as a model drug was successfully encapsulated into nanogels...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28575741/amino-functionalized-nano-vesicles-for-enhanced-anticancer-efficacy-and-reduced-myelotoxicity-of-carboplatin
#20
Xiumei Zhu, Yan Peng, Liyan Qiu
Carboplatin is one of the few platinum-based antitumor drugs used worldwide. Unfortunately, systemic carboplatin therapy is limited by its dose-related myelosuppression. In this study, a viable way to reduce the serious myelotoxicity of carboplatin while improving its therapeutic efficacy using amino-functionalized polyphosphazene vesicles is reported. First, three polyphosphazenes with different amino content were synthesized by amidating hydrophobic side groups; these polyphosphazenes could self-assemble into polymersomes with similar particle size and morphology...
May 15, 2017: Colloids and Surfaces. B, Biointerfaces
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