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hyperthermia cancer

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https://www.readbyqxmd.com/read/29147526/a-ratiometric-fluorescent-probe-for-imaging-and-quantifying-anti-apoptotic-effects-of-gsh-under-temperature-stress
#1
Xiaoyue Han, Xinyu Song, Fabiao Yu, Lingxin Chen
Hypothermia and hyperthermia are cell stressed states resulting from environmental temperature changes, which can abnormally decrease intracellular glutathione (GSH) concentrations and induce apoptosis. As the most abundant intracellular non-protein biothiol, GSH can protect cells from apoptosis. Considering the important roles of GSH in the anti-apoptotic process in cells and in vivo, we strive to develop a powerful chemical tool for the direct detection of GSH concentration changes under temperature stress...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29147000/stable-icg-loaded-upconversion-nanoparticles-silica-core-shell-theranostic-nanoplatform-for-dual-modal-upconversion-and-photoacoustic-imaging-together-with-photothermal-therapy
#2
Ruichan Lv, Depeng Wang, Liyang Xiao, Guanying Chen, Jun Xia, Paras N Prasad
We report here the design and multiple functions of a new hierarchical nanotheronostic platform consisting of an upconversion nanoparticle (UCNP) core: shell with an additional mesoporous silica (mSiO2) matrix load shell containing sealed, high concentration of ICG molecules. We demonstrate that this UCNP@mSiO2-ICG nanoplatform can perform the following multiple functions under NIR excitation at 800 nm: 1) Light harvesting by the UCNP shell containing Nd and subsequent energy transfer to Er in the Core to produce efficient green and red upconversion luminescence for optical imaging; 2) Efficient nonradiative relaxation and local heating produced by concentration quenching in aggregated ICG imbedded in the mesopourous silica shell to enable both photoacoustic imaging and photothermal therapy...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29145750/feasibility-of-on-line-temperature-based-hyperthermia-treatment-planning-to-improve-tumour-temperatures-during-locoregional-hyperthermia
#3
H P Kok, L Korshuize-van Straten, A Bakker, R de Kroon-Oldenhof, G H Westerveld, E Versteijne, L J A Stalpers, J Crezee
BACKGROUND: The effectiveness of hyperthermia is strongly dependent on the achieved tumour temperatures. Phased-array systems allow flexible power steering to realise good tumour heating while avoiding excessive heating in normal tissue, but the limited quantitative accuracy of pre-treatment planning complicates realising optimal tumour heating. On-line hyperthermia treatment planning could help to improve the heating quality. This paper demonstrates the feasibility of using on-line temperature-based treatment planning to improve the heating quality during hyperthermia in three patients...
November 16, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29144983/albumin-coordinated-assembly-of-clearable-platinum-nanodots-for-photo-induced-cancer-theranostics
#4
Yong'an Tang, Tao Yang, Qiaoli Wang, Xiaoyan Lv, Xue Song, Hengte Ke, Zhengqing Guo, Xiaoqing Huang, Jun Hu, Zifu Li, Peng Yang, Xiangliang Yang, Huabing Chen
Photoactive noble metal nanoparticles are of increasing importance toward personalized cancer therapy in the field of precision nanomedicine. A critical challenge remains in the exploration of clinically potential noble metal nanoparticles for highly efficient cancer theranostics. Here, we introduce albumin-coordinated assembly of clearable Pt nanodots (Pt-NDs) with monodisperse nanostructure as high-performance theranostic agents for imaging-guided photothermal tumor ablation. We precisely manipulate the reduction and growth of tetravalent Pt ions into ultrasmall nanodots through albumin-directed growth kinetics, thereby leading to the synthesis of monodisperse 6...
October 20, 2017: Biomaterials
https://www.readbyqxmd.com/read/29138559/human-mesenchymal-stem-cell-derived-iron-oxide-exosomes-allow-targeted-ablation-of-tumor-cells-via-magnetic-hyperthermia
#5
U Altanerova, M Babincova, P Babinec, K Benejova, J Jakubechova, V Altanerova, M Zduriencikova, V Repiska, C Altaner
Magnetic hyperthermia, or the heating of tissues using magnetic materials, is a promising approach for treating cancer. We found that human mesenchymal stem cells (MSCs) isolated from various tissues and MSCs expressing the yeast cytosine deaminase∷uracil phosphoribosyl transferase suicide fusion gene (yCD∷UPRT) can be labeled with Venofer, an iron oxide carbohydrate nanoparticle. Venofer labeling did not affect cell proliferation or the ability to home to tumors. All Venofer-labeled MSCs released exosomes that contained iron oxide...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29134362/selecting-patients-for-hyperthermia-combined-with-preoperative-chemoradiotherapy-for-locally-advanced-rectal-cancer
#6
Sang-Won Kim, Ji Woon Yea, Jae Hwang Kim, Mi Jin Gu, Min Kyu Kang
BACKGROUND: This study investigated the role of hyperthermia combined with preoperative concurrent chemoradiotherapy (CCRT) for locally advanced rectal cancer (LARC) according to hypoxic marker expression. METHODS: One hundred and nine LARC patients with tissue blocks available for immunohistochemical assessment of carbonic anhydrase 9 (CA9) expression were reviewed. CA9 expression was considered positive when the staining percentage of tumor cells was >25% (n = 31)...
November 13, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29093500/shape-tailored-magnetic-nanorings-for-intracellular-hyperthermia-cancer-therapy
#7
Carlos S B Dias, Talita D M Hanchuk, Heberton Wender, Willian T Shigeyosi, Jörg Kobarg, André L Rossi, Marcelo N Tanaka, Mateus B Cardoso, Flávio Garcia
This work explores a new class of vortex/magnetite/iron oxide nanoparticles designed for magnetic hyperthermia applications. These nanoparticles, named Vortex Iron oxide Particles (VIPs), are an alternative to the traditional Superparamagnetic Iron Oxide Nanoparticles (SPIONs), since VIPs present superior heating power while fulfilling the main requirements for biomedical applications (low cytotoxicity and nonremanent state). In addition, the present work demonstrates that the synthesized VIPs also promote an internalization and aggregation of the particles inside the cell, resulting in a highly localized hyperthermia in the presence of an alternating magnetic field...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29075487/magnetic-nanoparticles-in-cancer-diagnosis-drug-delivery-and-treatment
#8
Meijia Wu, Shengwu Huang
In recent years, magnetic nanoparticles (MNPs) have demonstrated marked progress in the field of oncology. General nanoparticles are widely used in tumor targeting, and the intrinsic magnetic property of MNPs makes them the most promising nanomaterial to be used as contrast agents for magnetic resonance imaging (MRI) and induced magnetic hyperthermia. The properties of MNPs are fully exploited when they are used as drug delivery agents, wherein drugs may be targeted to the desired specific location in vivo by application of an external magnetic field...
November 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29072756/perfluorinated-hdac-inhibitors-as-selective-anticancer-agents
#9
James W Walton, Jasmine M Cross, Tina Riedel, Paul J Dyson
A series of potent histone deacetylase inhibitors is presented that incorporate alkyl or perfluorinated alkyl chains. Several new compounds show greater in vitro antiproliferative activity than the clinically approved inhibitor, SAHA. Furthermore, the new compounds show up to 5-fold greater activity against cancer cells than healthy cells. This selectivity is in contrast to SAHA, which is more active against the healthy cell line than the cancer cell line tested. Finally, we report an increase in activity for SAHA under mild hyperthermia, indicating that it could be an interesting candidate to use in combination with thermal therapy...
November 7, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29072442/microwave-absorption-and-the-magnetic-hyperthermia-applications-of-li0-3zn0-3co0-1fe2-3o4-nanoparticles-in-multiwalled-carbon-nanotube-matrix
#10
Madhumita Dalal, Jean-Marc Greneche, Biswarup Satpati, Tayssir B Ghzaiel, Frédric Mazaleyrat, Raghumani S Ningthoujam, Pabitra K Chakrabarti
Nanoparticles of Li0.3Zn0.3Co0.1Fe2.3O4 (LZC) were prepared by the sol-gel method and dried in a furnace at ∼200 °C. The dried sample was annealed at 500, 600, 700, and 800 °C for 5 h each. Rietveld analysis of X-ray diffraction patterns confirms the cubic Fd3̅m phase formation with lattice parameters ranged from 8.376 up to 8.390 Å and allows the crystallite sizes (dcryst) to be estimated. To enhance microwave (MW) absorption as well as the effectiveness for hyperthermia treatment, nanoparticles are taken in the matrix of multiwalled carbon nanotubes (MWCNTs) and the morphology of the so-prepared samples (LZC@MWCNT) was studied by scanning electron microscopy and transmission electron microscopy analyses...
November 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29071189/black-phosphorus-nanosheets-for-mild-hyperthermia-enhanced-chemotherapy-and-chemo-photothermal-combination-therapy
#11
Sheng Wang, Jian Weng, Xiao Fu, Jing Lin, Wenpei Fan, Nan Lu, JunLe Qu, Siping Chen, Tianfu Wang, Peng Huang
Near-infrared (NIR) light triggered photothermally enhanced cellular internalization strategy shows great potential to improve antitumor effect to fight against cancer. In this work, a black phosphorus (BP) nanosheet-based nanomedicine, which is composed of BP nanosheet, human serum albumin (HSA) and paclitaxel (PTX), was developed for mild hyperthermia-enhanced intracellular drug delivery and chemo-photothermal combination therapy. BP nanosheet was successfully synthesized by a one-pot biomimetic synthesis method using HSA as exfoliating agent and capping agent...
2017: Nanotheranostics
https://www.readbyqxmd.com/read/29066122/comparing-the-effectiveness-of-combined-external-beam-radiation-and-hyperthermia-versus-external-beam-radiation-alone-in-treating-patients-with-painful-bony-metastases-a-phase-3-prospective-randomized-controlled-trial
#12
Mau-Shin Chi, Kai-Lin Yang, Yue-Cune Chang, Hui-Ling Ko, Yi-Hsien Lin, Su-Chen Huang, Yi-Ying Huang, Kuang-Wen Liao, Motoharu Kondo, Kwan-Hwa Chi
PURPOSE: To compare the response, duration of pain relief, and time to achieve complete pain relief after radiation therapy (RT) with or without hyperthermia (HT) in patients with painful bony metastases. METHODS AND MATERIALS: Cancer patients with bony metastases and pain score ≥4 on the Brief Pain Inventory (BPI) were randomized to RT of 30 Gy in 10 fractions combined with HT (RT + HT) versus RT alone. Hyperthermia was performed by the Thermotron RF-8, with maintenance of the target temperature for 40 minutes per treatment within 2 hours after RT, twice weekly for 2 weeks...
September 21, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29058880/hydroxyapatite-as-a-vehicle-for-the-selective-effect-of-superparamagnetic-iron-oxide-nanoparticles-against-human-glioblastoma-cells
#13
Sebastian Pernal, Victoria M Wu, Vuk Uskoković
Despite the early promises of magnetic hyperthermia (MH) as a method for treating cancer, it has been stagnating in the past decade. Some of the reasons for the low effectiveness of superparamagnetic nanoparticles (SPIONs) in MH treatments include (a) low uptake in cancer cells; (b) generation of reactive oxygen species that cause harm to the healthy cells; (c) undeveloped targeting potential; and (d) lack of temperature sensitivity between cancer cells and healthy cells. Here we show that healthy cells, including human mesenchymal stem cells (MSCs) and primary mouse kidney and lung fibroblasts, display an unfavorably increased uptake of SPIONs compared to human brain cancer cells (E297 and U87) and mouse osteosarcomas cells (K7M2)...
November 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29039909/indocyanine-green-holo-transferrin-nanoassemblies-for-tumor-targeted-dual-modal-imaging-and-photothermal-therapy-of-glioma
#14
Mingting Zhu, Zonghai Sheng, Yali Jia, Dehong Hu, Xin Liu, Xianyuan Xia, Chengbo Liu, Pan Wang, Xiaobing Wang, Hairong Zheng
Active-targeted cancer imaging and therapy of glioma has attracted much attention in theranostic nanomedicine. As a promising tumor-targeting ligand, holo-transferrin (holo-Tf) has been applied for enhancing delivery of nanotheranostics. However, holo-Tf-based nanoassemblies for active targeting mediated multimodal imaging and therapeutics have not been previously reported. Here, we develop a one-step method for the preparation of holo-Tf-indocyanine green (holo-Tf-ICG) nanoassemblies for fluorescence (FL) and photoacoustic (PA) dual-modal imaging and photothermal therapy (PTT) of glioma...
October 31, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29039593/hyperthermia-with-different-temperatures-inhibits-proliferation-and-promotes-apoptosis-through-the-egfr-stat3-pathway-in-c6-rat-glioma-cells
#15
Yao-Dong Chen, Yu Zhang, Tian-Xiu Dong, Yu-Tong Xu, Wei Zhang, Ting-Ting An, Peng-Fei Liu, Xiu-Hua Yang
Malignant gliomas are a group of aggressive neoplasms among human cancers. The curative effects of current treatments are finite for improving the prognosis of patients. Hyperthermia (HT) is an effective treatment for cancers; however, the effects of HT with different temperatures in treatment of MG and relevant mechanisms remain unclear. MTT assay and Annexin V‑fluorescein isothiocyanate/propidium iodide staining were used for investigating the proliferation and apoptosis of C6 cells, respectively. Western blotting was applied to detect the expression of proteins...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29035036/nanoprobe-synthesized-by-magnetotactic-bacteria-detecting-fluorescence-variations-under-dissociation-of-rhodamine-b-from-magnetosomes-following-temperature-ph-changes-or-the-application-of-radiation
#16
Edouard Alphandéry, Darine Abi Haidar, Olivier Seksek, Maxime Thoreau, Alain Trautmann, Nadege Bercovici, Florence Gazeau, François Guyot, Imène Chebbi
We report a method of fabrication of fluorescent magnetosomes, designated as MCR400, in which 400 μM of rhodamine B are introduced in the growth medium of AMB-1 magnetotactic bacteria and fluorescent magnetosomes are then extracted from these bacteria. These fluorescent magnetosomes behave differently from most fluorescent nanoprobes, which often lead to fluorescence losses over time due to photobleaching. Indeed, when MCR400 are heated to 30-90 °C, brought to an acidic pH, or exposed to radiations, we observed that their fluorescence intensity increased...
October 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29030300/gold-nanocage-decorated-ph-sensitive-micelle-for-highly-effective-photothermo-chemotherapy-and-photoacoustic-imaging
#17
Guoyong Zhou, Hong Xiao, Xiaoxia Li, Yi Huang, Wei Song, Liang Song, Meiwan Chen, Du Cheng, Xintao Shuai
A pH-sensitive copolymer PAsp(DIP)-b-PAsp(MEA) (PDPM) was synthesized and self-assembled to micelle loading chemotherapeutic drug doxorubicin (DOX) and introducing a gold nanocage structure for photothermo-chemotherapy and photoacoustic imaging. After further surface modification with polyethylene glycol (PEG), the DOX-loaded pH-sensitive gold nanocage (D-PGNC) around 100 nm possessed a uniform spherical structure with a pH-sensitive core of PAsp(DIP) incorporating DOX, an interlayer crosslinked via disulfide bonds and decorated with discontinuous gold shell, and a PEG corona...
December 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29027224/immunomodulation-by-ionizing-radiation-impact-for-design-of-radio-immunotherapies-and-for-treatment-of-inflammatory-diseases
#18
REVIEW
Benjamin Frey, Michael Rückert, Lisa Deloch, Paul F Rühle, Anja Derer, Rainer Fietkau, Udo S Gaipl
Ionizing radiation is often regarded as an element of danger. But, danger responses on the cellular and molecular level are often beneficial with regard to the induction of anti-tumor immunity and for amelioration of inflammation. We outline how in dependence of radiation dose and fraction, radiation itself-and especially in combination with immune modulators-impacts on the innate and adaptive immune system. Focus is set on radiation-induced changes of the tumor cell phenotype and the cellular microenvironment including immunogenic cancer cell death...
November 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28993133/physics-responsible-for-heating-efficiency-and-self-controlled-temperature-rise-of-magnetic-nanoparticles-in-magnetic-hyperthermia-therapy
#19
REVIEW
Zhila Shaterabadi, Gholamreza Nabiyouni, Meysam Soleymani
Magnetic nanoparticles as heat generation nanosources in hyperthermia treatment are still faced with many drawbacks for achieving sufficient clinical potential. In this context, increase in heating ability of magnetic nanoparticles in a safe alternating magnetic field and also approach to a precise control on temperature rise are two challenging subjects so that a significant part of researchers' efforts has been devoted to them. Since a deep understanding of Physics concepts of heat generation by magnetic nanoparticles is essential to develop hyperthermia as a cancer treatment with non-adverse side effects, this review focuses on different mechanisms responsible for heat dissipation in a radio frequency magnetic field...
October 6, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28990364/synthesis-functionalization-and-design-of-magnetic-nanoparticles-for-theranostic-applications
#20
REVIEW
Jalal Mosayebi, Mehdi Kiyasatfar, Sophie Laurent
In order to translate nanotechnology into medical practice, magnetic nanoparticles (MNPs) have been presented as a class of non-invasive nanomaterials for numerous biomedical applications. In particular, MNPs have opened a door for simultaneous diagnosis and brisk treatment of diseases in the form of theranostic agents. This review highlights the recent advances in preparation and utilization of MNPs from the synthesis and functionalization steps to the final design consideration in evading the body immune system for therapeutic and diagnostic applications with addressing the most recent examples of the literature in each section...
October 9, 2017: Advanced Healthcare Materials
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