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https://www.readbyqxmd.com/read/29906701/real-time-imaging-tracking-of-a-dual-fluorescent-drug-delivery-system-based-on-doxorubicin-loaded-globin-polyethylenimine-nanoparticles-for-visible-tumor-therapy
#1
Yan Zhang, Chang Wei, Feng Lv, Tianjun Liu
Elucidation of the pathway of drug delivery and carrier degradation in vivo is essential for the fabrication of a feasible drug delivery system. Multispectral fluorescence imaging can track a drug delivery system simultaneously based on the separation of fluorescence at multiple wavelengths without interference. In this study, the Doxorubicin loaded genipin-crosslinked globin and PEI nanoparticles (Gb-G-PEI/Dox NPs) were designed as a dual fluorescent drug delivery system to track the drug release and carrier degradation process...
June 6, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29906389/biotin-tagged-polysaccharide-vesicular-nanocarriers-for-receptor-mediated-anticancer-drug-delivery-in-cancer-cells
#2
Nilesh Umakant Deshpande, Manickam Jayakannan
Biotin-conjugated multi-stimuli-responsive polysaccharide vesicular nanocarriers are designed and developed, for the first time, to accomplish receptor-mediated endocytosis in cancer cells and to deliver anticancer drugs at the intracellular compartments. For this purpose, a new renewable hydrophobic unit was custom designed with redox-degradable disulphide and enzyme-biodegradable aliphatic ester chemical linkages and it was conjugated along with biotin on the dextran backbone. The dextran derivative self-assembled into nanovesicles of < 200 nm in size which were characterized by dynamic and static light scattering, electron and atomic force microscopes...
June 15, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29906097/a-facile-approach-for-the-doxorubicine-delivery-in-cancer-cells-by-responsive-and-fluorescent-core-shell-quantum-dots
#3
Enaam Jamal Al Dine, Sophie Marchal, Raphaël Schneider, Batoul Hamie, Jaafar Ghanbaja, Thibault Roques-Carmes, Tayssir Hamieh, Joumana Toufaily, Eric Gaffet, Halima Alem
Biocompatible thermo-responsive copolymers based on 2-(2-methoxyethoxy) ethyl methacrylate (MEO2MA) and oligo (ethylene glycol) methacrylate (OEGMA) were grown from the surface of ZnO Quantum Dots (QDs) by Surface Initiated Atom Transfer Radical Polymerization with Activators Regenerated by electron Transfer (SI-ARGET ATRP) in order to design smart and fluorescent core/shell nanosystems to be used towards cancer cells. Tunable lower critical solution temperature (LCST) values were obtained and studied in water and in culture medium...
June 15, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29905979/directed-graphene-based-nanoplatforms-for-hyperthermia-overcoming-multiple-drug-resistance
#4
Zhaoxu Tu, Haishi Qiao, Yuting Yan, Guy Guday, Wei Chen, Mohsen Adeli, Rainer Haag
Multidrug resistance (MDR), which leads tumors resistance to traditional anticancer drugs, can cause the failure of chemotherapy treatments. In this work, we present a new way to overcome this problem using smart multifunctional graphene-based drug delivery systems which can target subcellular organelles and show synergistic hyperthermia and chemotherapy. Mitochondria-targeting ligands are conjugated onto the doxorubicin-loaded, polyglycerol-covered nanographene sheets to actively accumulate them inside the mitochondria after charge-mediated cellular internalization...
June 15, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29905462/the-human-biomolecular-corona-of-liposomal-doxorubicin-the-overlooked-factor-in-anticancer-drug-delivery
#5
Giulio Caracciolo, Sara Palchetti, Luca Digiacomo, Riccardo Zenezini Chiozzi, Anna Laura Capriotti, Heinz Amenitsch, Paolo Maria Tentori, Valentina Palmieri, Massimiliano Papi, Francesco Cardarelli, Daniela Pozzi, Aldo Laganà
More than twenty years after its approval by the Food and Drug Administration (FDA) liposomal doxorubicin (DOX) is still the drug of choice for the treatment of breast cancer and other conditions such as ovarian cancer and multiple myeloma. Yet, despite the efforts, liposomal DOX did not satisfy expectations at the clinical level. When liposomal drugs enter a physiological environment, their surface gets coated by a dynamic biomolecular corona (BC). The BC changes liposome's synthetic identity, providing it with a new one, referred to as 'biological identity' (size, aggregation state, and BC composition)...
June 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29905067/surface-functionalization-of-polymeric-nanoparticles-with-umbilical-cord-derived-mesenchymal-stem-cell-membrane-for-tumor-targeted-therapy
#6
Na Yang, Yanping Ding, Yinlong Zhang, Bin Wang, Xiao Zhao, Keman Cheng, Yixin Huang, Mohammad Taleb, Jing Zhao, Wen-Fei Dong, Lirong Zhang, Guangjun Nie
Multiple cell plasma membranes have been utilized for surface functionalization of synthetic nanomaterials and construction of biomimetic drug delivery systems for cancer treatment. The natural characters and facile isolation of original cells facilitate the biomedical applications of plasma membranes in functionalizing nanocarriers. Human umbilical cord-derived mesenchymal stem cells (MSC) have been identified to show tropism towards malignant lesions and have great advantages in ease of acquisition, low immunogenicity, and high proliferative ability...
June 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29904979/platinum-sensitivity-of-ovarian-cancer-cells-does-not-influence-their-ability-to-induce-m2-type-macrophage-polarization
#7
Agata Mlynska, Egle Povilaityte, Inga Zemleckaite, Karolina Zilionyte, Marius Strioga, Jan Krasko, Neringa Dobrovolskiene, Mei-Wen Peng, Birute Intaite, Vita Pasukoniene
PROBLEM: Development of platinum resistance in ovarian cancer is mediated by both cancer cells and tumor microenvironment. Activation of epithelial-mesenchymal transition program in cancer cells may lead to enrichment for resistant clones. These processes can be affected by tumor-associated macrophages, a highly plastic population of cells that participate in tumor progression and response to treatment by shaping the microenvironment. We aimed to study how platinum resistance influences the crosstalk between macrophages and ovarian cancer cells...
June 14, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29903850/long-term-survival-in-recurrent-adrenocortical-cancer
#8
Md Shuayb, Arunangshu Das, Mirza Nazim Uddin
Adrenocortical carcinoma (ACC) comprises approximately 0.02% of all malignant tumours, which are a very small fraction of a group of cancers that affect in 0.7 to 2 in 1 000 000 people per year. Recurrence is very common even after complete resection and prognosis is poor. We report a case of a sporadic form of ACC found in a 41-year-old Asian Bangladeshi man. His tumour was surgically excised completely with negative margins and he did not receive any adjuvant therapy. Four years later, adrenal adenoma was developed at his opposite side which was also excised...
June 13, 2018: BMJ Supportive & Palliative Care
https://www.readbyqxmd.com/read/29903764/inferior-survival-in-high-grade-b-cell-lymphoma-with-myc-and-bcl2-and-or-bcl6-rearrangements-is-not-associated-with-myc-ig-gene-rearrangements
#9
Ellen D McPhail, Matthew J Maurer, William R Macon, Andrew L Feldman, Paul J Kurtin, Rhett P Ketterling, Rakhee Vaidya, James R Cerhan, Stephen M Ansell, Luis F Porrata, Grzegorz S Nowakowski, Thomas E Witzig, Thomas M Habermann
High-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements (double-/triple-hit lymphoma) has an aggressive clinical course. We investigated prognostic value of transformation from low-grade lymphoma, cytologic features (high grade versus large cell), MYC gene rearrangement partners (immunoglobulin versus nonimmunoglobulin gene), and treatment. We evaluated 100 adults with double-/triple-hit lymphoma, reviewing cytologic features; cell of origin; and rearrangements of MYC, BCL2, and BCL6 using MYC, BCL2, and BCL6 break-apart and IGH/MYC, IGL/MYC, IGK/MYC, and IGH/BCL2 dual-fusion interphase fluorescence in situ hybridization probes...
June 14, 2018: Haematologica
https://www.readbyqxmd.com/read/29903707/valproate-in-combination-with-rituximab-and-chop-as-first-line-therapy-in-diffuse-large-b-cell-lymphoma-valfrid
#10
Kristina Drott, Hans Hagberg, Karin Papworth, Thomas Relander, Mats Jerkeman
The aims of the present study were to establish the maximally tolerated dose (MTD) of the histone deacetylase inhibitor valproate together with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) in patients with diffuse large B-cell lymphoma (DLBCL). A phase 1 dose escalation study of valproate together with R-CHOP followed by a dose expansion study using the established MTD of valproate was performed. MTD of valproate together with R-CHOP was established at 60 mg/kg per day, as higher doses resulted in auditory adverse events (AEs)...
June 26, 2018: Blood Advances
https://www.readbyqxmd.com/read/29903057/hydroxyl-functional-groups-on-graphene-trigger-the-targeted-delivery-of-antitumor-drugs
#11
Mimi Lin, Suyan Shan, Peipei Liu, Liwei Ma, Libin Huang, Mei Yang, Tom Lawson, Zhifeng Wang, Zhenguo Huang, Bingyang Shi, Lu Yan, Yong Liu
An efficient and targeted treatment for tumor cells is demonstrated. This targeting is based upon the strong affinity between hydroxyl-functional groups on graphene and acidic tumors. The hydroxylated graphene (GOH) with a unique 2D architecture further improve the targeting capacity of the system via an enhanced permeability and retention (EPR) process. Polyethylene glycol (PEG) was employed for better biocompatibility and the antitumor drug doxorubicin (DOX) was then incorporated. These additions created a biocompatible system with a superior pH-dependent drug release property...
August 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29903056/viral-capsids-mimicking-based-on-ph-sensitive-biodegradable-polymeric-micelles-for-efficient-anticancer-drug-delivery
#12
Lutao Jiang, Yan Liang, Qingqing Huo, Yuji Pu, Wei Lu, Shangcong Han, Jie Cao, Bin He, Yong Sun
Bio-inspired supramolecular self-assembly have been widely explored in biomedical engineering, especially in the field of drug delivery. Here, viral capsid analogue pH-Sensitive polymeric micelles HA-Hyd-DOX were reported, where natural polysacarrides hyaluronic acid (HA) and anticancer drug doxorubicin (DOX), were linked through a hydrazone bond with a high drug loading content of 33.09 wt%. The polymeric micelles look like artificial virus capsids from "core-shell" structures. In addition, the polymeric backbone HA and hydrazone bonds were destroyed in the presence of hyaluronidase in cancer cells and under the acidic conditions of pH = 5 respectively, thereby prodrug-based polymeric micelles could penetrate into the tumor and DOX could be released in lysosomes to enhance anticancer efficacy...
August 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29902537/nucleolin-is-expressed-in-patient-derived-samples-and-glioblastoma-cells-enabling-improved-intracellular-drug-delivery-and-cytotoxicity
#13
Joana Balça-Silva, Anália do Carmo, Hermínio Tão, Olinda Rebelo, Marcos Barbosa, Vivaldo Moura-Neto, Ana Bela Sarmento-Ribeiro, Maria Celeste Lopes, João Nuno Moreira
One of the major challenges in Glioblastoma (GBM) therapy relates with the existence of glioma stem-like cells (GSCs), known to be chemo- and radio-resistant. GSCs and non-stem GBM cells have the ability to interchange, emphasizing the importance of identifying common molecular targets among those cell sub-populations. Nucleolin overexpression has been recently associated with breast cancer sub-populations with different stem-like phenotype. The goal of this work was to evaluate the potential of cell surface nucleolin as a target in GBM cells...
June 11, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29901161/fabrication-of-psoralen-loaded-lipid-polymer-hybrid-nanoparticles-and-their-reversal-effect-on-drug-resistance-of-cancer-cells
#14
Yueling Yuan, Peter Chiba, Tiange Cai, Richard Callaghan, Li Bai, Susan P C Cole, Yu Cai
In the present study, a lipid-polymer hybrid drug carrier system was developed to encapsulate psoralen (PSO), a multidrug resistance reversal agent and traditional Chinese medicine. Emphasis was focused the parameters that influence physicochemical characteristics, and then the drug release profile, stability, cytotoxicity and drug resistance reversal effect of the lipid-polymer hybrid nanoparticles (LPNs) were investigated. It was found that various formulation parameters affected NP size, drug loading (DL) and release characteristics...
June 14, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29900064/induction-of-enhanced-immunogenic-cell-death-through-ultrasound-controlled-release-of-doxorubicin-by-liposome-microbubble-complexes
#15
Feng-Ying Huang, Jing Lei, Yan Sun, Fei Yan, Bin Chen, Liming Zhang, Zhuoxuan Lu, Rong Cao, Ying-Ying Lin, Cai-Chun Wang, Guang-Hong Tan
Immunogenic cell death (ICD) is a specific kind of cell death that stimulates the immune system to combat cancer cells. Ultrasound (US)-controlled targeted release of drugs by liposome-microbubble complexes is a promising approach due to its non-invasive nature and visibility through ultrasound imaging. However, it is not known whether this approach can enhance ICD induced by drugs, such as doxorubicin. Herein, we prepared a doxorubicin-liposome-microbubble complex (MbDox), and the resultant MbDox was then characterized and tested for US-controlled release of Dox (MbDox+US treatment) to enhance the induction of ICD in LL/2 and CT26 cancer cells and in syngeneic murine models...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29899845/a-novel-combinatorial-treatment-option-for-metastatic-uveal-melanoma
#16
Dudi Shneor, Shay Tayeb, Jacob Pe'er, Hanna Voropaev, Maria Gimmelshein, Nathalie Cassoux, Alik Honigman, Shahar Frenkel
Uveal melanoma (UM) is the most frequent intraocular tumor in adult patients. When metastases occur, systemic therapy with alkylating agents (fotemustine or dacarbazine (DTIC)) has shown only modest efficacy. The common chemotherapeutic drug doxorubicin (DOX) is not used to treat metastatic UM (mUM). To expand the chemotherapeutic arsenal for mUM, we tested the effect of DOX on UM cell mortality. We have previously shown that CREB knockdown enhances sensitivity to DOX. UM cells infected with recombinant MuLV-based replicative competent retroviruses (RCR) expressing shRNA targeting CREB were co-treated with either DTIC or DOX...
May 25, 2018: Oncotarget
https://www.readbyqxmd.com/read/29899763/prospective-single-center-implementation-and-response-evaluation-of-pressurized-intraperitoneal-aerosol-chemotherapy-pipac-for-peritoneal-metastasis
#17
Martin Graversen, Sönke Detlefsen, Jon Kroll Bjerregaard, Claus Wilki Fristrup, Per Pfeiffer, Michael Bau Mortensen
Background: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a laparoscopy-guided administration of aerosolized chemotherapy. PIPAC seems to improve objective tumor response, survival and quality of life in patients with peritoneal metastasis. We assessed feasibility and efficacy of PIPAC in patients with peritoneal metastasis (PM). Methods: Patients were included in a prospective PIPAC protocol. Patients with colorectal PM were treated with oxaliplatin, patients with other primary tumors were treated with cisplatin and doxorubicin...
2018: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/29897733/stimuli-responsive-nano-carrier-for-co-delivery-of-mir-31-and-doxorubicin-to-suppress-high-mtef4-cancer
#18
Fang Wang, Lingyun Zhang, Xiufeng Bai, Xintao Cao, Xiangyu Jiao, Yan Huang, Yansheng Li, Yan Qin, Yongqiang Wen
Gene interference-based therapeutics represents a fascinating challenge and shows enormous potential for cancer treatment, in which microRNA is used to correct abnormal gene. Based on the above, we introduced microRNA-31 to bind to 3' untranslated region of mtEF4, resulting in the downregulation of its messenger RNA and protein to trigger cancer cells apoptosis through mitochondria-related pathway. To achieve better therapeutic effect, a mesoporous silica nanoparticles-based controlled nanoplatform had been developed...
June 13, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29896302/temperature-controlled-phase-transition-ultrasound-imaging-guided-photothermal-chemotherapy-triggered-by-nir-light
#19
Wei Li, Wanqing Hou, Xiaomeng Guo, Lihua Luo, Qingpo Li, Chunqi Zhu, Jie Yang, Jiang Zhu, Yongzhong Du, Jian You
Recently, nano-sized ultrasound contrast agents encapsulating drugs for cancer diagnosis and therapy have attracted much attention. However, the ultrasound signal of these agents is too weak to obtain an ideal ultrasound imaging effect. Furthermore, conventional ultrasound contrast agents with strong echo signal are not suitable for drug delivery against cancer because of their large size. To circumvent this problem, phase-transition ultrasound contrast agents are believed to be an excellent choice. Methods: Liposomes co-encapsulating doxorubicin (DOX), hollow gold nanospheres (HAuNS), and perfluorocarbon (PFC) were synthesized by film dispersion method...
2018: Theranostics
https://www.readbyqxmd.com/read/29896295/cascade-amplifying-synergistic-effects-of-chemo-photodynamic-therapy-using-ros-responsive-polymeric-nanocarriers
#20
Chun-Yang Sun, Ziyang Cao, Xue-Jun Zhang, Rong Sun, Chun-Shui Yu, Xianzhu Yang
The simple integration of chemotherapeutic drugs and photosensitizers (PSs) into the same nanocarriers only achieves a combination of chemo-photodynamic therapy but may not confer synergistic effects. The boosted intracellular release of chemotherapeutic drugs during the photodynamic therapy (PDT) process is necessary to achieve a cascade of amplified synergistic therapeutic effects of chemo-photodynamic therapy. Methods: In this study, we explored an innovative hyperbranched polyphosphate (RHPPE) containing a singlet oxygen (SO)-labile crosslinker to boost drug release during the PDT process...
2018: Theranostics
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