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https://www.readbyqxmd.com/read/29777858/cd44-targeted-plga-nanomedicines-for-cancer-chemotherapy
#1
REVIEW
Ankit Saneja, Divya Arora, Robin Kumar, Ravindra Dhar Dubey, Amulya K Panda, Prem N Gupta
In recent years scientific community has drawn a great deal of attention towards understanding the enigma of cluster of differentiation-44 (CD44) in order to deliver therapeutic agents more selectively towards tumor tissues. Moreover, its over-expression in variety of solid tumors has attracted drug delivery researchers to target this receptor with nanomedicines. Conventional nanomedicines based on biodegradable polymers such as poly(lactide-co-glycolide) (PLGA) are often associated with insufficient cellular uptake by cancer cells, due to lack of active targeting moiety on their surface...
May 16, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29777377/radiolabeled-f-ab-2-cetuximab-for-theranostic-purposes-in-colorectal-and-skin-tumor-bearing-mice-models
#2
P-S Bellaye, M Moreau, O Raguin, A Oudot, C Bernhard, J-M Vrigneaud, L Dumont, D Vandroux, F Denat, A Cochet, F Brunotte, B Collin
PURPOSE: This study aimed to investigate theranostic strategies in colorectal and skin cancer based on fragments of cetuximab, an anti-EGFR mAb, labeled with radionuclide with imaging and therapeutic properties, 111 In and 177 Lu, respectively. METHODS: We designed F(ab')2 -fragments of cetuximab radiolabeled with 111 In and 177 Lu. 111 In-F(ab')2 -cetuximab tumor targeting and biodistribution were evaluated by SPECT in BalbC nude mice bearing primary colorectal tumors...
May 17, 2018: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29775901/tricine-co-ligand-improved-the-efficacy-of-99m-tc-hynic-ser-3-j18-peptide-for-targeting-and-imaging-of-non-small-cell-lung-cancer
#3
Zahra Shaghaghi, Seyed Mohammad Abedi, Seyed Jalal Hosseinimehr
The early diagnosis of non-small cell lung cancer (NSCLC) is important for increasing survival rate and improving quality life of patients. The aim of this study was to investigate 99m  Tc-(tricine)-HYNIC-(Ser)3 -J18 for targeting and imaging of NSCLC in A-549 xenografted nude mice. The (Ser)3 -J18 peptide was conjugated with HYNIC and labeled with 99m  Tc using tricine as a co-ligand. The radiolabeled peptide was evaluated for its radiochemical purity, stability, receptor binding and internalization in vitro...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775813/hyaluronate-lactoferrin-layer-by-layer-coated-lipid-nanocarriers-for-targeted-co-delivery-of-rapamycin-and-berberine-to-lung-carcinoma
#4
Dalia M Kabary, Maged W Helmy, Kadria A Elkhodairy, Jia-You Fang, Ahmed O Elzoghby
The self-tumor targeting polymers, lactoferrin (LF) and hyaluronic acid (HA) were utilized to develop layer-by-layer (LbL) lipid nanoparticles (NPs) for dual delivery of berberine (BER) and rapamycin (RAP) to lung cancer. To control its release from the NPs, BER was hydrophobically ion paired with SLS prior to incorporation into NPs. Spherical HA/LF-LbL-RAP-BER/SLS-NPs 250.5 nm in diameter, with a surface charge of -18.5 mV were successfully elaborated. The NPs exhibited sequential release pattern with faster release of BER followed by controlled release of RAP which enables sensitization of lung tumor cells to the anti-cancer action of RAP...
May 15, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29775284/multifunctional-tumor-targeting-cathepsin-b-sensitive-gemcitabine-prodrug-covalently-targets-albumin-in-situ-and-improves-cancer-therapy
#5
Huicong Zhang, Zhisu Sun, Kuanglei Wang, Na Li, Hongxiang Chen, Xiao Tan, Lingxiao Li, Zhonggui He, Jin Sun
We report a new type of amide bond-bearing cathepsin B-sensitive gemcitabine (GEM) prodrugs, capable of in situ covalently targeting circulating albumin and then making a hitchhike to the tumor. Specially, less plasma-enzyme deactivation, long plasma half-life, independence on nucleoside transporters, outstanding tumor targeting and site-specific drug release are achieved and such these multifunctional advantages contribute to the dramatically increased in vivo antitumor efficacy.
May 18, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29770821/a-size-shrinkable-nanoparticle-based-combined-anti-tumor-and-anti-inflammatory-strategy-for-enhanced-cancer-therapy
#6
Zhengze Lu, Yang Long, Xingli Cun, Xuhui Wang, Jianping Li, Ling Mei, Yiliang Yang, Man Li, Zhirong Zhang, Qin He
Cancer-related inflammation can promote tumorigenesis, tumor growth and tumor metastasis in many types of cancers. Therefore, inhibiting cancer-related inflammation significantly improves cancer therapy. It has been reported that metformin (MET) inhibits the nuclear translocation of nuclear factor-κB (NF-κB), a key factor in cancer-related inflammation. However, the short half-life and the lack of tumor targeting limit the anti-inflammatory efficacy of MET in vivo. Herein, using pH-sensitive imine bonds, MET and the chemotherapy drug doxorubicin (DOX) were loaded onto size-shrinkable RGD-DGL-GNP nanoparticles (RDG NPs) for combination therapy...
May 17, 2018: Nanoscale
https://www.readbyqxmd.com/read/29768210/engineered-tumor-targeted-t-cells-mediate-enhanced-anti-tumor-efficacy-both-directly-and-through-activation-of-the-endogenous-immune-system
#7
Mauro P Avanzi, Oladapo Yeku, Xinghuo Li, Dinali P Wijewarnasuriya, Dayenne G van Leeuwen, Kenneth Cheung, Hyebin Park, Terence J Purdon, Anthony F Daniyan, Matthew H Spitzer, Renier J Brentjens
Chimeric antigen receptor (CAR) T cell therapy has proven clinically beneficial against B cell acute lymphoblastic leukemia and non-Hodgkin's lymphoma. However, suboptimal clinical outcomes have been associated with decreased expansion and persistence of adoptively transferred CAR T cells, antigen-negative relapses, and impairment by an immunosuppressive tumor microenvironment. Improvements in CAR T cell design are required to enhance clinical efficacy, as well as broaden the applicability of this technology...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29768008/striking-a-balance-between-carbonate-carbamate-linkage-bond-and-reduction-sensitive-disulfide-bond-bearing-linker-for-tailored-controlled-release-in-situ-covalently-albumin-binding-gemcitabine-prodrugs-promote-bioavailability-and-tumor-accumulation
#8
Huicong Zhang, Kuanglei Wang, Kexin Na, Dan Li, Zhenbao Li, Dongyang Zhao, Lu Zhong, Menglin Wang, Longfa Kou, Cong Luo, Haotian Zhang, Qiming Kan, Huaiwei Ding, Zhonggui He, Jin Sun
To address the challenge of rapid enzyme inactivation, poor tumor targeting, acquired drug resistance in gemcitabine (GEM) application, we report two groups of maleimide-functionalised GEM prodrugs conjugating covalently in situ with cys-34 of blood-circulating albumin, resulting in macromolecular prodrugs after intravenous administration. Specially, tailored and accurate controlled release was achieved through different combinations of linkage bonds relatively stable and labile (carbamate and carbonate, respectively) and linkers with or without insertion of a disulfide bond...
May 16, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29767256/umbilical-cord%C3%A2-derived-mesenchymal-stem-cells-can-inhibit-the-biological-functions-of-melanoma-a375-cells
#9
Wei Wang, Li Li, Fei Chen, Yu Yang
Tumor tropism is an important property of mesenchymal stem cells (MSCs) that has been used in tumor‑targeting therapies. However, the effects of MSCs on tumors remain controversial. The aim of the present study was to investigate the effects of MSCs on A375 melanoma cells. Umbilical cord‑derived mesenchymal stem cells (UCMSCs) were co‑cultured with A375 cells. MTT and Transwell assays were used to assess cell proliferation and invasion, while flow cytometry was performed to detect the apoptosis and the cell cycle distribution of A375 cells...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29766795/carboxymethyl-hexanoyl-chitosan-nanodroplets-for-ultrasonic-imaging-and-drug-delivery-to-tumor
#10
Yu Jinsui, Situ Bing, Luo Muhua, Li Yue, Liao Jianyi, Du Meng, Cai Kuan, Yang Chaopin, Zhang Hui, Chen Zhiyi
INTRODUCTION: Although a great many strategies have been proposed for tumor-targeted chemotherapy, current delivery methods of anticancer drugs present limited success with inevitable systemic toxicity. The aim of this study was to develop a new kind of theranostic carrier for targeted tumor therapy. METHODS: Prior to prepare CHC-PFP-DOX, carboxymethyl-hexanoyl chitosan (CHC) was synthesized by acylation of carboxymethyl chitosan. To develop CHC-PFP, perfluoropentane (PFP), an ultrasound gas precursor, were simultaneously encapsulated into the hydrophobic inner cores of pre-formulated CHC micelle in aqueous phase via using the oil in water (O/W) emulsion method...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29765153/cox-2-mediates-pro-tumorigenic-effects-of-pkc%C3%AE%C2%B5-in-prostate-cancer
#11
Rachana Garg, Jorge M Blando, Carlos J Perez, Priti Lal, Michael D Feldman, Emer M Smyth, Emanuela Ricciotti, Tilo Grosser, Fernando Benavides, Marcelo G Kazanietz
The pro-oncogenic kinase PKCε is overexpressed in human prostate cancer and cooperates with loss of the tumor suppressor Pten for the development of prostatic adenocarcinoma. However, the effectors driving PKCε-mediated phenotypes remain poorly defined. Here, using cellular and mouse models, we showed that PKCε overexpression acts synergistically with Pten loss to promote NF-κB activation and induce cyclooxygenase-2 (COX-2) expression, phenotypic traits which are also observed in human prostate tumors. Targeted disruption of PKCε from prostate cancer cells impaired COX-2 induction and PGE2 production...
May 16, 2018: Oncogene
https://www.readbyqxmd.com/read/29763715/near-infrared-light-activated-red-emitting-upconverting-nanoplatform-for-t-1-weighted-magnetic-resonance-imaging-and-photodynamic-therapy
#12
Xiang-Long Tang, Jun Wu, Ben-Lan Lin, Sheng Cui, Hong-Mei Liu, Ru-Tong Yu, Xiao-Dong Shen, Ting-Wei Wang, Wei Xia
Photodynamic therapy (PDT) has increasingly become an efficient and attractive cancer treatment modality based on reactive oxygen species (ROS) that can induce tumor death after irradiation with ultraviolet or visible light. Herein, to overcome the limited tissue penetration in traditional PDT, a novel near-infrared (NIR) light-activated NaScF4 : 40% Yb, 2% Er@CaF2 upconversion nanoparticle (rUCNP) is successfully designed and synthesized. Chlorin e6, a photosensitizer and a chelating agent for Mn2+ , is loaded into human serum albumin (HSA) that further conjugates onto rUCNPs...
May 12, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29763568/near-infrared-activatable-phthalocyanine-poly-l-glutamic-acid-conjugate-enhanced-in-vivo-safety-and-antitumor-efficacy-towards-an-effective-photodynamic-cancer-therapy
#13
Hoay Yan Cheah, Elena Gallon, Fabienne Dumoulin, See Ziau Hoe, Nina Japundžić-Žigon, Sofija Glumac, Hong Boon Lee, Prem Anand, Lip Yong Chung, Maria Jesus Vicent, Lik Voon Kiew
We previously developed a new zinc (II) phthalocyanine (ZnPc) derivative (Pc 1) conjugated to poly-L-glutamic acid (PGA) (1-PG) to address the limitations of ZnPc as part of an antitumor photodynamic therapy approach, which include hydrophobicity, phototoxicity and non-selectivity in biodistribution and tumor targeting. During this study, we discovered that 1-PG possessed high near infrared (NIR) light absorptivity (λmax = 675 nm), good singlet oxygen generation efficiency in an aqueous environment, and enhanced photocytotoxic efficacy and cancer cell uptake in vitro...
May 15, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29760047/nanoparticles-that-reshape-the-tumor-milieu-create-a-therapeutic-window-for-effective-t-cell-therapy-in-solid-malignancies
#14
Fan Zhang, Sirkka B Stephan, Chibawanye I Ene, Tyrel T Smith, Eric C Holland, Matthias T Stephan
A major obstacle to the success rate of chimeric antigen receptor (CAR-) T cell therapy against solid tumors is the microenvironment antagonistic to T cells that solid tumors create. Conventional checkpoint blockade can silence lymphocyte anti-survival pathways activated by tumors, but because they are systemic, these treatments disrupt immune homeostasis and induce autoimmune side effects. Thus, new technologies are required to remodel the tumor milieu without causing systemic toxicities. Here we demonstrate that targeted nanocarriers that deliver a combination of immune-modulatory agents can remove pro-tumor cell populations and simultaneously stimulate anti-tumor effector cells...
May 14, 2018: Cancer Research
https://www.readbyqxmd.com/read/29755570/identification-of-a-novel-tumor-binding-peptide-for-lung-cancer-through-in-vitro-panning
#15
Babak Bakhshinejad, Habib Nasiri
Tumor-targeted therapies are playing growing roles in cancer research. The exploitation of these powerful therapeutic modalities largely depends on the discovery of tumor-targeting ligands. Phage display has proven a promising high throughput screening tool for the identification of novel specific peptides with high binding affinity to cancer cells. In the present study, we describe the use of phage display to isolate peptide ligands binding specifically to human lung cancer cells. Towards this goal, we screened a phage display library of 7-mer random peptides in-vitro on non-small cell lung carcinoma (A549) as the target cell...
2018: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/29755110/endostatin-gene-therapy-delivered-by-attenuated-salmonella-typhimurium-in-murine-tumor-models
#16
Kang Liang, Qing Liu, Pei Li, Yue Han, Xiaoping Bian, Yibo Tang, Qingke Kong
Salmonella typhimurium (hereafter S. typhimurium), as Gram-negative facultative anaerobic bacteria, are good candidates for cancer therapy and delivering therapeutic antitumor agents. However, it is necessary to reduce the virulence of such bacteria and enhance their tumor-targeting ability, and their immunostimulatory ability to induce tumor cell apoptosis. In this study, we constructed a S. typhimurium mutant named S634 harboring aroA mutation and additional mutations involved in modifications of lipid A...
May 14, 2018: Cancer Gene Therapy
https://www.readbyqxmd.com/read/29752103/assembling-of-stimuli-responsive-tumor-targeting-polypyrrole-nanotubes-drug-carrier-system-for-controlled-release
#17
Jian Chen, Xiufang Li, Jiawen Li, Jianbing Li, Ling Huang, Tao Ren, Xiao Yang, Shian Zhong
A stimuli-responsive polypyrrole (PPy) nanotubes drug carrier system has been designed to deliver anticancer drugs to tumor cells in a targeted and controlled manner. The PPy nanotubes drug carrier was fabricated by a template method. The nanotubes surface was functionalized with cleavable acylhydrazone and disulfide bonds by attaching thiolated β-cyclodextrin (β-CD). The solubilizing poly(ethylene glycol) polymer (PEG), attached with an adamantane (Ad) entity at one end and a folate (FA) entity at the other end, was introduced onto the nanotubes surface via β-cyclodextrin-adamantane interaction...
August 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29748833/cytosine-arabinoside-prodrug-designed-to-bind-plasma-serum-albumin-for-drug-delivery
#18
Wei Wei, Zhonggui He, Jincheng Yang, Mengchi Sun, Jin Sun
Rational design of anticancer prodrugs for efficient albumin binding can show distinct advantages in drug delivery in terms of high drug availability, long systemic circulation, potential targeting effect, and enhanced chemotherapy effect. In the present study, we reported a cytosine arabinoside (Ara-C) prodrug which could well formulate in solution and instantly transform into long-circulating nanocomplexes by hitchhiking blood-circulating albumin after i.v. administration. Specifically, Ara-C was conjugated with an albumin-binding maleimide derivative, the resulting Ara-C maleimide caproic acid conjugate (AM) was well formulated in aqueous solution, conferring high albumin-binding ability in vitro albumin-binding studies...
May 10, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29747685/car-t-cell-therapy-for-breast-cancer-harnessing-the-tumor-milieu-to-drive-t-cell-activation
#19
Pradip Bajgain, Supannikar Tawinwung, Lindsey D'Elia, Sujita Sukumaran, Norihiro Watanabe, Valentina Hoyos, Premal Lulla, Malcolm K Brenner, Ann M Leen, Juan F Vera
BACKGROUND: The adoptive transfer of T cells redirected to tumor via chimeric antigen receptors (CARs) has produced clinical benefits for the treatment of hematologic diseases. To extend this approach to breast cancer, we generated CAR T cells directed against mucin1 (MUC1), an aberrantly glycosylated neoantigen that is overexpressed by malignant cells and whose expression has been correlated with poor prognosis. Furthermore, to protect our tumor-targeted cells from the elevated levels of immune-inhibitory cytokines present in the tumor milieu, we co-expressed an inverted cytokine receptor linking the IL4 receptor exodomain with the IL7 receptor endodomain (4/7ICR) in order to transform the suppressive IL4 signal into one that would enhance the anti-tumor effects of our CAR T cells at the tumor site...
May 10, 2018: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/29745029/amplifying-apoptosis-homing-nanoplatform-for-tumor-theranostics
#20
Heng Zhao, Ping Zhou, Kai Huang, Guang Deng, Zhiguo Zhou, Jing Wang, Mingwei Wang, Yingjian Zhang, Hong Yang, Shiping Yang
Nanomedicine has significantly impacted cancer theranostics. However, its efficiency is restricted by the limited enhanced permeability and retention effect of nanomaterials and insufficient density/specificity of receptors of tumor cells. Herein, an apoptosis-homing nanoplatform based on zinc(II) dipicolylamine (ZnDPA) conjugated Fe/Fe3 O4 nanoparticles (MNPs/ZnDPA), which demonstrates amplified magnetic resonance signal and photothermal therapy, is developed. In an apoptotic xenograft model constructed by doxorubicin, due to the high affinity between ZnDPA and the upregulated level of phosphatidylserine on the outer surface of apoptotic cancer cells, the accumulation value of MNPs/ZnDPA is enhanced two-fold and the tumor/muscle ratio of T2 values is decreased to 50% compared to that in the normal xenograft model...
May 10, 2018: Advanced Healthcare Materials
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