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Cancer drug delivery

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https://www.readbyqxmd.com/read/29471218/albumin-covered-lipid-nanocapsules-exhibit-enhanced-uptake-performance-by-breast-tumor-cells
#1
F Galisteo-González, J A Molina-Bolívar, S A Navarro, H Boulaiz, A Aguilera-Garrido, A Ramírez, J A Marchal
Liquid lipid nanocapsules (LLN) represent a promising new generation of drug-delivery systems. They can carry hydrophobic drugs in their oily core, but the composition and structure of the surrounding protective shell determine their capacity to survive in the circulatory system and to achieve their goal: penetrate tumor cells. Here, we present a study of LLN covered by the protein human serum albumin (HSA) and loaded with curcumin as a hydrophobic model drug. A cross-linking procedure was performed to further strengthen the protective protein layer...
February 13, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29471038/co-delivery-nanoparticle-to-overcome-metastasis-promoted-by-insufficient-chemotherapy
#2
Qing Zhou, Yihui Li, Yanhong Zhu, Chan Yu, Haibo Jia, Binghao Bao, Hang Hu, Chen Xiao, Jianqi Zhang, Xiaofan Zeng, Ying Wan, Huibi Xu, Zifu Li, Xiangliang Yang
Heterogeneous distribution of drug inside tumor is ubiquitous, causing regional insufficient chemotherapy, which might be the hotbed for drug resistance, tumor cell repopulation and metastasis. Herein, we verify, for the first time, that heterogeneous drug distribution induced insufficient chemotherapy would accelerate the process of epithelial mesenchymal transition (EMT), consequently resulting in the promotion of tumor metastasis. To eliminate the insufficient chemotherapy promoted metastasis, we conceived a co-delivery strategy by hydroxyethyl starch-polylactide (HES-PLA) nanoparticle, in which DOX and TGF-β receptor inhibitor, LY2157299 (LY), were administered together...
February 19, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29470828/enhancement-of-dissolution-and-skin-permeability-of-pentazocine-by-proniosomes-and-niosomal-gel
#3
Asadullah Madni, Muhammad Abdur Rahim, Muhammad Ahmad Mahmood, Abdul Jabar, Mubashar Rehman, Hassan Shah, Arshad Khan, Nayab Tahir, Aamna Shah
Proniosomes (PN) are the dry water-soluble carrier systems that may enhance the oral bioavailability, stability, and topical permeability of therapeutic agents. The low solubility and low oral bioavailability due to extensive first pass metabolism make Pentazocine as an ideal candidate for oral and topical sustained release delivery. The present study was aimed to formulate the PNs by quick slurry method that are converted to niosomes (liquid dispersion) by hydration, and subsequently formulated to semisolid niosomal gel...
February 22, 2018: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29470827/in-vitro-characterization-and-evaluation-of-the-cytotoxicity-effects-of-nisin-and-nisin-loaded-pla-peg-pla-nanoparticles-on-gastrointestinal-ags-and-kyse-30-hepatic-hepg2-and-blood-k562-cancer-cell-lines
#4
Fariba Goudarzi, Asadollah Asadi, Maryam Afsharpour, Robab Hassanvand Jamadi
The aim of this study was an in vitro evaluation and comparison of the cytotoxic effects of free nisin and nisin-loaded PLA-PEG-PLA nanoparticles on gastrointestinal (AGS and KYSE-30), hepatic (HepG2), and blood (K562) cancer cell lines. To create this novel anti-cancer drug delivery system, the nanoparticles were synthesized and then loaded with nisin. Subsequently, their biocompatibility, ability to enter cells, and physicochemical properties, including formation, size, and shape, were studied using hemolysis, fluorescein isothiocyanate (FITC), Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), and scanning electron microscopy (SEM), respectively...
February 22, 2018: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29470042/fabrication-of-charge-conversion-nanoparticles-for-cancer-imaging-by-flash-nanoprecipitation
#5
Meng Li, Yisheng Xu, Jinli Sun, Mingwei Wang, Dahai Yang, Xuhong Guo, Haiyun Song, Song Cao, Yunfeng Yan
Traditional charge-conversion nanoparticles (NPs) need the breakage of acid-labile groups on the surface which impedes the rapid response to the acidic microenvironment. Here, we developed novel rod-like charge-conversion NPs with amphiphilic Dex-b-PLGA, PDMAEMA-b-PCL, and an AIE-active probe through Flash Nanoprecipitation (FNP). These NPs exhibit reversible negative-to-positive charge transition at slightly acidic pH relying on the rapid protonation/deprotonation of polymers. The size and the critical charge-conversion pH can be further tuned by varying the flow rate and polymer ratio...
February 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29468888/synthesis-characterization-and-in-vitro-evaluation-of-magnetic-nanoparticles-modified-with-pcl-peg-pcl-for-controlled-delivery-of-5fu
#6
Nahideh Asadi, Nasim Annabi, Ebrahim Mostafavi, Maryam Anzabi, Rovshan Khalilov, Siamak Saghfi, Masoud Mehrizadeh, Abolfazl Akbarzadeh
Magnetic nanoparticles have properties that cause to apply them in cancer therapy and vehicles for the delivery of drugs such as 5FU, especially when they are modified with biocompatible copolymers. The aim of this study is to modify superparamagnetic iron oxide nanoparticles (SPIONPs) with PCL-PEG-PCL copolymers and then utilization of these nanoparticles for encapsulation of anticancer drug 5FU. The ring-opening polymerization (ROP) was used for the synthesis of PCL-PEG-PCL copolymer by ε-caprolactone (PCL) and polyethylene glycol (PEG2000)...
February 22, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29468872/quest-for-efficacious-next-generation-taxoid-anticancer-agents-and-their-tumor-targeted-delivery
#7
Iwao Ojima, Xin Wang, Yunrong Jing, Changwei Wang
Paclitaxel and docetaxel are among the most widely used chemotherapeutic drugs against various types of cancer. However, these drugs cause undesirable side effects as well as drug resistance. Therefore, it is essential to develop next-generation taxoid anticancer agents with better pharmacological properties and improved activity especially against drug-resistant and metastatic cancers. The SAR studies by the authors have led to the development of numerous highly potent novel second- and third-generation taxoids with systematic modifications at the C-2, C-10, and C-3' positions...
February 22, 2018: Journal of Natural Products
https://www.readbyqxmd.com/read/29468823/molecularly-selective-regulation-of-delivery-fluxes-employing-supramolecular-bindings-in-layer-by-layer-films
#8
Tao Huang, Xinglong Luan, Qi Xia, Shaofeng Pan, Qi An, Yaling Wu, Yihe Zhang
The molecularly selective regulation of molecular fluxes in a biomaterial that delivers simultaneously multiple chemical species is still beyond the touch of materials scientists. We developed a delivery material using layer-by-layer (LbL) technique that discriminatively regulates the delivery flux of bioactive small molecules, represented by a peptide containing RGD fragment and the chemotherapy drug DOX. Molecularly selective flux regulations in layer-by-layer films are realized using fast reversible supramolecular bindings between cyclodextrin and its guests...
February 22, 2018: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29468553/crispr-cas9-mediated-knockout-of-rb1-in-xenopus-tropicalis
#9
Thomas Naert, Kris Vleminckx
At this time, no molecular targeted therapies exist for treatment of retinoblastoma. This can be, in part, attributed to the lack of animal models that allow for both rapid identification of novel therapeutic targets and hypothesis driven drug testing. Within this scope, we have recently reported the first genuine genetic nonmammalian retinoblastoma cancer model within the aquatic model organism Xenopus tropicalis (Naert et al., Sci Rep 6: 35263, 2016). Here we describe the methods to generate rb1 mosaic mutant Xenopus tropicalis by employing the CRISPR/Cas9 technology...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29467932/characterization-of-aptamer-mediated-gene-delivery-system-for-liver-cancer-therapy
#10
Zhongbing Liu, Xiaoduan Sun, Shuangli Xiao, Yan Lin, Chunhong Li, Na Hao, Meiling Zhou, Ruolan Deng, Siyun Ke, Zhirong Zhong
Liver cancer is a fatal disease with limited therapy options. The recombinant adenovirus expressing tumor-suppressor gene of PTEN (Ad5-PTEN) showed effective antitumor activity against liver cancer. However, its disadvantages produced great limitation on its application, especially its nonspecific and toxicity to normal cells and tissues. The epithelial cell adhesion molecule (EpCAM) is over-expressed in some liver cancer cells and an RNA aptamer EpDT3 could specially target to EpCAM-positive cells. Based on this founding, we aimed to design a kind of gene delivery system of EpDT3-mediated Ad5-PTEN (EpDT3-PEG-Ad5-PTEN, EPAP) in which polyethylene glycol was used to be a linker to conjugate EpDT3 with Ad5-PTEN...
January 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29464047/a-dock-derived-compound-against-laminin-receptor-37-lr-exhibits-anti-cancer-properties-in-a-prostate-cancer-cell-line-model
#11
Charles Samuel Umbaugh, Adriana Diaz-Quiñones, Manoel Figueiredo Neto, Joseph J Shearer, Marxa L Figueiredo
Laminin receptor (67 LR) is a 67 kDa protein derived from a 37 kDa precursor (37 LR). 37/67 LR is a strong clinical correlate for progression, aggression, and chemotherapeutic relapse of several cancers including breast, prostate, and colon. The ability of 37/67 LR to promote cancer cell aggressiveness is further increased by its ability to transduce physiochemical and mechanosensing signals in endothelial cells and modulate angiogenesis. Recently, it was demonstrated that 37/67 LR modulates the anti-angiogenic potential of the secreted glycoprotein pigment epithelium-derived factor (PEDF)...
January 19, 2018: Oncotarget
https://www.readbyqxmd.com/read/29464046/identification-and-characterization-of-novel-enhanced-cell-penetrating-peptides-for-anti-cancer-cargo-delivery
#12
Xiguang Zhang, Jean Yves Brossas, Christophe Parizot, Jean Marc Zini, Angelita Rebollo
Cell penetrating peptides (CPP) are able cross the membrane and to transport cargos, presenting a great potential in drug delivery and diagnosis. In this paper, we have identified novel natural or synthetic CPPs. We have validated their rapid and efficient time and dose-dependent penetration, the absence of toxicity, the intracellular localization and the stability to proteases degradation, one of the main bottlenecks of peptides. Moreover, we have associate a cargo (an interfering peptide blocking the association of the serine/threonine phosphatase PP2A to its inhibitor, the oncogene SET) to the new generated shuttles and showed that they new bi-functional peptides keep the original properties of the shuttle and, in addition, are able to induce apoptosis due to the properties of the cargo...
January 19, 2018: Oncotarget
https://www.readbyqxmd.com/read/29463996/black-phosphorus-and-its-biomedical-applications
#13
REVIEW
Jane Ru Choi, Kar Wey Yong, Jean Yu Choi, Azadeh Nilghaz, Yang Lin, Jie Xu, Xiaonan Lu
Black phosphorus (BP), also known as phosphorene, has attracted recent scientific attention since its first successful exfoliation in 2014 owing to its unique structure and properties. In particular, its exceptional attributes, such as the excellent optical and mechanical properties, electrical conductivity and electron-transfer capacity, contribute to its increasing demand as an alternative to graphene-based materials in biomedical applications. Although the outlook of this material seems promising, its practical applications are still highly challenging...
2018: Theranostics
https://www.readbyqxmd.com/read/29463989/combined-delivery-of-sorafenib-and-a-mek-inhibitor-using-cxcr4-targeted-nanoparticles-reduces-hepatic-fibrosis-and-prevents-tumor-development
#14
Yun-Chieh Sung, Ya-Chi Liu, Po-Han Chao, Chih-Chun Chang, Pei-Ru Jin, Ts-Ting Lin, Ja-An Lin, Hui-Teng Cheng, Jane Wang, Charles P Lai, Ling-Hsuan Chen, Anthony Y Wu, Ting-Lun Ho, Tsaiyu Chiang, Dong-Yu Gao, Dan G Duda, Yunching Chen
Liver damage and fibrosis are precursors of hepatocellular carcinoma (HCC). In HCC patients, sorafenib-a multikinase inhibitor drug-has been reported to exert anti-fibrotic activity. However, incomplete inhibition of RAF activity by sorafenib may also induce paradoxical activation of the mitogen-activated protein kinase (MAPK) pathway in malignant cells. The consequence of this effect in non-malignant disease (hepatic fibrosis) remains unknown. This study aimed to examine the effects of sorafenib on activated hepatic stellate cells (HSCs), and develop effective therapeutic approaches to treat liver fibrosis and prevent cancer development...
2018: Theranostics
https://www.readbyqxmd.com/read/29463371/enhanced-in-vitro-and-in-vivo-anticancer-properties-by-using-a-nanocarrier-for-co-delivery-of-antitumor-polypeptide-and-curcumin
#15
Mengjiao Qi, Shaohua Zou, Chunjing Guo, Kaili Wang, Yueming Yu, Feng Zhao, Huaying Fan, Zimei Wu, Wanhui Liu, Daquan Chen
In this paper, a novel pH and redox dual-sensitive nanocarrier loaded with curcumin (Cur) and anticancer polypeptide (AP) was developed for dual targeting mitochondrial and CD44 receptor. The amphiphilic block copolymer was prepared by triphenylphosphonium (TPP)/oligomeric hyaluronic acid (oHA)/disulfide-menthone 1,2-glycerol ketal (SM), hereinafter referred to as TPP-oHSM. The TPP targeted the mitochondria, pH/redox dual-sensitive SM served as a hydrophobic part, and the CD44 receptor targeting oHA worked as a hydrophilic part...
January 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29463370/exchangeability-of-fitc-sio%C3%A2-nanoparticles-between-cancer-cells-increases-the-range-of-drug-delivery
#16
Guoying Deng, Zizheng Wu, Feng Zhou, Chenyun Dai, Jingpeng Zhao, Yingjie Kang, Qian Wang, Xijian Liu, Yin Wang, Qiugen Wang
Drug delivery system studies aim to improve nanoparticle (NP) formulation to enable efficient delivery of NPs to tumors. However, NPs must be transported by blood or through direct injection. How NPs leave the circulatory system and how NPs diffuse into a tumor remain unclear, and this uncertainty is a limitation of drug delivery systems. The intimate connection between these questions and metabolism may be related to their biosafety in vivo. Thus, in this study, classical carrier SiO2 NPs were used as typical transport NPs, and fluorescein isothiocyanate (FITC) was used as the representative drug and tracer...
January 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29463364/cutting-edge-protein-and-carbohydrate-based-materials-for-anticancer-drug-delivery
#17
Rasheed Ahmad, Yan Deng, Ravina Singh, Mubashir Hussain, Muhammad Ali Abdullah Shah, Sauli Elingarami, Nongyue He, Yueming Sun
Materials derived from biological sources not only offer biocompatibility but also adjust with the disease for elongated treatments and more effective therapies. These materials can be utilized as building blocks to construct state of the art drug delivery vehicles like nanoparticles, hydrogels, and nanofibers capable of dramatically enhancing the therapeutic efficiency in cancer treatment. New emerging trends in drug delivery design are constantly reported in recent literature using carbohydrates like cellulose, chitosan, and alginate and proteins like albumin, collagen, gelatin, and zein...
January 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29463124/designed-construction-of-tween-60-2%C3%AE-cd-self-assembly-vesicles-as-drug-delivery-carrier-for-cancer-chemotherapy
#18
Yue Yuan, Qin Zhang, Yun Yan, Miaomiao Gong, Qi Zhao, Zhihong Bao, Kaerdun Liu, Siling Wang
We report a simple strategy to prepare Tween 60@2β-CD self-assembly vesicles in aqueous solution as a new drug delivery carrier for cancer chemotherapy. The spherical shape of vesicles was confirmed by transmission electron microscopy (TEM) and mean particle sizes were about 33.7 nm, as measured by dynamic light scattering, micro-IR results indicated that the self-assembly vesicles was driven by hydrogen bonding. Hydrophilic doxorubicin (DOX) was successfully loaded into the self-assembly vesicles with drug loading content of 7...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29463123/novel-application-of-pluronic-lecithin-organogels-plos-for-local-delivery-of-synergistic-combination-of-docetaxel-and-cisplatin-to-improve-therapeutic-efficacy-against-ovarian-cancer
#19
Chia-En Chang, Chien-Ming Hsieh, Ling-Chun Chen, Chia-Yu Su, Der-Zen Liu, Hua-Jing Jhan, Hsiu-O Ho, Ming-Thau Sheu
The synergistic combination of docetaxel (DTX) and cisplatin (CIS) by local drug delivery with a pluronic lecithin organogel (PLO) to facilitate high drug concentrations at tumor sites and less nonspecific distribution to normal organs is thought to be beneficial in chemotherapy. In this study, using Capryol-90 (C90) with the addition of lecithin as the oil phase was developed to carry DTX, which was then incorporated into a PLO-containing CIS to formulate a dual-drug injectable PLO for local delivery. An optimal PLO composite, P13 L0...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29462991/functionalized-asymmetric-bola-type-amphiphiles-for-efficient-gene-and-drug-delivery
#20
Zheng Huang, Dong-Mei Zhao, Xuan Deng, Ji Zhang, Yi-Mei Zhang, Xiao-Qi Yu
The studies of bolaamphiphile-based nanoparticles as delivery vectors are still rudimentary and under development. In this study, several asymmetric bolaamphiphiles containing lysine and another moiety with special functions, such as pH-sensitive or cell-targeting property, were designed and synthesized. The potentials of these bolaamphiphile-based nanoparticles as versatile vectors for both nucleic acids and chemical drugs were studied. With the presence of 1,2-dioleoyl- sn -glycero-3-phosphoethanolamine (DOPE), these amphiphiles could be prepared into bolasomes, which showed good DNA binding ability and could condense plasmid DNA into nanoparticles with appropriate size and surface potential...
February 17, 2018: Nanomaterials
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