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https://www.readbyqxmd.com/read/28098340/inhibitory-effect-of-blue-light-emitting-diode-on-migration-and-invasion-of-cancer-cells
#1
Phil-Sun Oh, Hyun-Soo Kim, Eun-Mi Kim, Hyosook Hwang, Hyang Hwa Ryu, SeokTae Lim, Myung-Hee Sohn, Hwan-Jeong Jeong
The aim of this study was to determine the effects and molecular mechanism of blue light emitting diode (LED) in tumor cells. A migration and invasion assay for the metastatic behavior of mouse colon cancer CT-26 and human fibrosarcoma HT-1080 cells was performed. Cancer cell migration-related proteins were identified by obtaining a 2-dimensional gel electrophoresis (2-DE) in total cellular protein profile of blue LED-irradiated cancer cells, followed by matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) analysis of proteins...
January 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28097808/identification-of-ntrk-fusions-in-pediatric-mesenchymal-tumors
#2
Dean Pavlick, Alexa B Schrock, Denise Malicki, Philip J Stephens, Dennis J Kuo, Hyunah Ahn, Brian Turpin, Kamran Badizegan, Jeffrey S Ross, Vincent A Miller, Victor Wong, Siraj M Ali
BACKGROUND: NTRK fusions are known oncogenic drivers and have recently been effectively targeted by investigational agents in adults. We sought to assess the frequency of NTRK fusions in a large series of pediatric and adolescent patients with advanced cancers. PROCEDURE: Genomic profiles from 2,031 advanced cancers from patients less than 21 years old who were assayed with comprehensive genomic profiling were reviewed to identify NTRK fusions. RESULTS: Total of nine cases (0...
January 18, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28096927/sclerosing-epithelioid-fibrosarcoma-metastasizing-to-the-penile-shaft
#3
Michael D Bell, Fadi Brimo, Sungmi Jung, Armen G Aprikian
We present the case of a 50-year-old man with a periurethral mass. He was previously known for sclerosing epithelioid fibrosarcoma (SEF) of the left foot, having an amputation for local recurrence with >2 cm negative margins. A solid periurethral mass was surgically excised seven months later, yielding the diagnosis of metastatic SEF. This is the first documented metastasis of SEF to the penis. These sarcomas have proven difficult to treat, with high recurrence rates despite a multimodal approach.
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28093447/inflammasomes-and-cancer
#4
Rajendra Karki, Si Ming Man, Thirumala-Devi Kanneganti
Inflammation affects all stages of tumorigenesis. A key signaling pathway leading to acute and chronic inflammation is through activation of the caspase-1 inflammasome. Inflammasome complexes are assembled on activation of certain nucleotide-binding domain, leucine-rich repeat-containing proteins (NLR), AIM2-like receptors, or pyrin. Of these, NLRP1, NLRP3, NLRC4, NLRP6, and AIM2 influence the pathogenesis of cancer by modulating innate and adaptive immune responses, cell death, proliferation, and/or the gut microbiota...
January 16, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28092786/imaging-thiol-redox-status-in-murine-tumors-in-vivo-with-rapid-scan-electron-paramagnetic-resonance
#5
Boris Epel, Subramanian V Sundramoorthy, Martyna Krzykawska-Serda, Matthew C Maggio, Mark Tseytlin, Gareth R Eaton, Sandra S Eaton, Gerald M Rosen, Joseph P Y Kao, Howard J Halpern
Thiol redox status is an important physiologic parameter that affects the success or failure of cancer treatment. Rapid scan electron paramagnetic resonance (RS EPR) is a novel technique that has shown higher signal-to-noise ratio than conventional continuous-wave EPR in in vitro studies. Here we used RS EPR to acquire rapid three-dimensional images of the thiol redox status of tumors in living mice. This work presents, for the first time, in vivo RS EPR images of the kinetics of the reaction of (2)H,(15)N-substituted disulfide-linked dinitroxide (PxSSPx) spin probe with intracellular glutathione...
December 31, 2016: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28091767/intramuscular-myxoma-clinical-and-surgical-observation-notes-on-eleven-cases
#6
Yahya Baltu, Şefik Murat Arikan, Utku Can Dölen, Hakan Uzun, Banu İnce Alkan, Orhan Aydın
PURPOSE: Intramuscular myxoma (IM) is a benign, soft tissue neoplasm of mesenchymal origin. We report our experience with this tumour. METHOD: This clinical study comprised 11 cases of IM that were operated on between March 2008 and June 2016. Tumour location and size, results of pre-operative radiological studies, preop-erative biopsies, pathology examinations, applied surgical method and post-operative complications were reported for all patients. RESULTS: In total, nine patients with 11 IMs with a mean age of 60...
January 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28068323/the-nogo-b-receptor-promotes-ras-plasma-membrane-localization-and-activation
#7
B Zhao, W Hu, S Kumar, P Gonyo, U Rana, Z Liu, B Wang, W Q Duong, Z Yang, C L Williams, Q R Miao
The localization of prenylated Ras at the plasma membrane promotes activation of Ras by receptor tyrosine kinases and stimulates oncogenic signaling by mutant Ras. The Nogo-B receptor (NgBR) is a transmembrane receptor that contains a conserved hydrophobic pocket. Here, we demonstrate that the NgBR promotes the membrane accumulation of Ras by directly binding prenylated Ras at the plasma membrane. We show that NgBR knockdown diminishes the membrane localization of Ras in multiple cell types. NgBR overexpression in NIH-3T3 fibroblasts increases membrane-associated Ras, induces the transformed phenotype in vitro, and promotes the formation of fibrosarcoma in nude mice...
January 9, 2017: Oncogene
https://www.readbyqxmd.com/read/28060376/induction-of-necroptotic-cell-death-by-viral-activation-of-the-rig-i-or-sting-pathway
#8
Suruchi N Schock, Neha V Chandra, Yuefang Sun, Takashi Irie, Yoshinori Kitagawa, Bin Gotoh, Laurent Coscoy, Astar Winoto
Necroptosis is a form of necrotic cell death that requires the activity of the death domain-containing kinase RIP1 and its family member RIP3. Necroptosis occurs when RIP1 is deubiquitinated to form a complex with RIP3 in cells deficient in the death receptor adapter molecule FADD or caspase-8. Necroptosis may play a role in host defense during viral infection as viruses like vaccinia can induce necroptosis while murine cytomegalovirus encodes a viral inhibitor of necroptosis. To see how general the interplay between viruses and necroptosis is, we surveyed seven different viruses...
January 6, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28056288/-clinical-application-of-125-i-radioactive-seeds-brachytherapy-in-the-treatment-of-the-pediatric-soft-tissue-sarcoma-in-head-and-neck
#9
D Zhao, L Zheng, X M Lü, M W Huang, Y Shi, X L Ma, J Yan, J G Zhang
Objective: To investigate the clinical application and preliminary results of (125)I radioactive seeds brachytherapy in the comprehensive treatment of the pediatric soft tissue sarcoma in head and neck. Methods: A total of 24 pediatric patients with soft tissue sarcoma in head and neck were treated at Peking University School of Stomatology from April 2012 to July 2015. The data was collected and analyzed through statistical methods, which included the pathological type, gender, age, tumor location, volume, treatment and the clinical results after the application of (125)I radioactive seeds brachytherapy...
January 3, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28056049/asc-induces-apoptosis-via-activation-of-caspase-9-by-enhancing-gap-junction-mediated-intercellular-communication
#10
Masato Kitazawa, Shigeaki Hida, Chifumi Fujii, Shun'ichiro Taniguchi, Kensuke Ito, Tomio Matsumura, Nagisa Okada, Takashi Sakaizawa, Akira Kobayashi, Michiko Takeoka, Shin-Ichi Miyagawa
ASC (apoptosis-associated speck-like protein containing a CARD) is a key adaptor molecule of inflammasomes that mediates inflammatory and apoptotic signals. Aberrant methylation-induced silencing of ASC has been observed in a variety of cancer cells, thus implicating ASC in tumor suppression, although this role remains incompletely defined especially in the context of closely neighboring cell proliferation. As ASC has been confirmed to be silenced by abnormal methylation in HT1080 fibrosarcoma cells as well, this cell line was investigated to characterize the precise role and mechanism of ASC in tumor progression...
2017: PloS One
https://www.readbyqxmd.com/read/28052005/bortezomib-augments-lymphocyte-stimulatory-cytokine-signaling-in-the-tumor-microenvironment-to-sustain-cd8-t-cell-antitumor-function
#11
Samuel T Pellom, Duafalia F Dudimah, Menaka C Thounaojam, Roman V Uzhachenko, Ashutosh Singhal, Ann Richmond, Anil Shanker
Tumor-induced immune tolerance poses a major challenge for therapeutic interventions aimed to manage cancer. We explored approaches to overcome T-cell suppression in murine breast and kidney adenocarcinomas, and lung fibrosarcoma expressing immunogenic antigens. We observed that treatment with a reversible proteasome inhibitor bortezomib (1 mg/kg body weight) in tumor-bearing mice significantly enhanced the expression of lymphocyte-stimulatory cytokines IL-2, IL-12, and IL-15. Notably, bortezomib administration reduced pulmonary nodules of mammary adenocarcinoma 4T1...
December 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/28048388/su-f-r-16-delineation-of-tumor-habitats-based-on-dynamic-contrast-enhanced-mri
#12
Y Chang, G Solorzano, E Ackerstaff, R Yechieli, T Subhawong, R Stoyanova
PURPOSE: To determine an automatic procedure for determining the number and delineation of tumor habitats from Dynamic Contrast Enhanced (DCE) MRI data. METHODS: An automatic procedure for delineation of tumor habitats from DCE-MRI datasets was developed as a two-part process involving: (1) statistical testing of the principal components of the dataset to detect the number of habitats and (2) the use of this number in an unsupervised pattern recognition (PR) technique to recover the temporal pattern and location of detected habitats...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048306/we-fg-bra-04-a-portable-confocal-microscope-to-image-live-cell-damage-response-induced-by-therapeutic-radiation
#13
C McFadden, D Flint, D Sadetaporn, A Asaithamby, D Grosshans, G Sawakuchi
PURPOSE: To construct a custom and portable fluorescence confocal laser-scanning microscope (FCLSM) that can be placed in the path of therapeutic radiation beams to study real-time radiation-induced damage response in live cells. METHODS: We designed and constructed a portable FCLSM with three laser diodes for excitation (405, 488, and 635 nm). An objective lens focuses the excitation light and collects fluorescence from the sample. A pair of galvanometer mirrors scans/collects the laser beam/fluorescence along the focal plane (x/y-directions)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046843/su-f-t-665-confocal-microscopy-imaging-of-cell-cycle-distribution-in-cells-treated-with-pegylated-gold-nanoshells
#14
D Sadetaporn, D Flint, C McFadden, A Asaithamby, G Sawakuchi
PURPOSE: To use confocal microscopy to distinguish cells in different phases of the cell cycle before and after treatment with pegylated gold nanoshells (PEG-AuNSs). METHODS: Transfected fibrosarcoma cells (HT1080-EYFP-53BP1-FUCCI) were cultured in T-25 flasks and seeded in glass bottom dishes. These cells express the fluorescent probe AmCyan during the G2/S phases of the cell cycle, mCherry during the G1 phase, and EYFP tagged to the DNA repair protein 53BP1. After allowing cells 4 h to adhere to dishes, PEG-AuNS (Nanospectra Biosciences, Houston, TX) at a concentration of 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046522/su-c-204-05-magnetic-resonance-induced-adaptive-response-to-orthovoltage-radiation-therapy-in-fsa-and-sa-nh-mouse-tumor-cell-lines
#15
K Mendel, R Miller, J Murley, M Sadinski, D Grdina
PURPOSE: To assess the effect of pre-treatment Magnetic Resonance Imaging (MRI) on cell survival following orthovoltage radiation therapy. METHODS: This in vitro study examined the survival of FSa cells (extracted from methylcholanthrene-induced fibrosarcoma in the flank of a C3H female mouse) and SA-NH cells (derived from a spontaneously arising murine sarcoma tumor) having undergone an MRI scan prior to radiation exposure. Cell cultures were kept at 37 C, in a humidified environment with 5% CO2, and were grown to confluence prior to the start of the experiment...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046261/we-fg-202-02-exploration-of-high-resolution-quantitative-ultrasonic-micro-vascular-imaging-for-early-assessment-of-radiotherapy-tumor-response
#16
S Kasoji, J Rivera, P Dayton, J Buse, S Chang
PURPOSE: Currently, we cannot predict an individual patient's response to a given radiotherapy which normally is not detected for weeks to months post-treatment. As a result, precious time is wasted for patients with unresponsive tumors who could have switched to an alternative treatment much earlier. Presently, no early treatment response detection method exists that is effective, low-cost, non-invasive, and safe. We hypothesize that changes in tumor microvasculature predict tumor response to radiotherapy earlier than tumor volume changes...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045549/curcumin-and-viscum-album-extract-decrease-proliferation-and-cell-viability-of-soft-tissue-sarcoma-cells-an-in-vitro-analysis-of-eight-cell-lines-using-real-time-monitoring-and-colorimetric-assays
#17
K Harati, B Behr, A Daigeler, T Hirsch, F Jacobsen, M Renner, A Harati, C Wallner, M Lehnhardt, M Becerikli
BACKGROUND: The cytostatic effects of the polyphenol curcumin and Viscum album extract (VAE) were assessed in soft-tissue sarcoma (STS) cells. METHODS: Eight human STS cell lines were used: fibrosarcoma (HT1080), liposarcoma (SW872, T778, MLS-402), synovial sarcoma (SW982, SYO1, 1273), and malignant fibrous histiocytoma (U2197). Primary human fibroblasts served as control cells. Cell proliferation, viability, and cell index (CI) were analyzed by BrdU assay, MTT assay, and real-time cell analysis (RTCA)...
January 3, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28039265/safety-tolerability-and-preliminary-activity-of-lb-100-an-inhibitor-of-protein-phosphatase-2a-in-patients-with-relapsed-solid-tumors
#18
John S Kovach, Vincent Chung, Aaron S Mansfield, Fadi Braiteh, Donald Richards, Henry Durivage, Richard S Ungerleider, Francis Johnson
PURPOSE: To determine the maximum tolerated dose and to assess the safety, tolerability, and potential activity of LB-100, a first-in-class small molecule inhibitor of protein phosphatase 2A (PP2A) in adult patients with progressive solid tumors. EXPERIMENTAL DESIGN: LB-100 was administered intravenously daily for 3 days in 21-day cycles in a 3+3 dose-escalation design. RESULTS: There were 29 patient entries over 7 dose escalations. One patient stopped treatment after one dose because of an acute infection and was re-enrolled after recovery; each course was analyzed as a separate patient entry...
December 30, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28039054/intracellular-delivery-and-passive-tumor-targeting-of-a-self-assembled-nanogel-containing-carborane-clusters-for-boron-neutron-capture-therapy
#19
Riku Kawasaki, Yoshihiro Sasaki, Kazunari Akiyoshi
Boron neutron capture therapy, based on the release of thermal neutron irradiation from boron, is a targeted radiation therapy for cancer. Targeted and sufficient accumulation of boron in tumor cells to achieve cytotoxic efficacy and reduce off-target effects remains a challenge. Carborane has been investigated for use as a delivery agent in boron neutron capture therapy because of its high boron content and chemical stability; however, it is cytotoxic, making safe delivery difficult. The aim of this study was to investigate the potential of carborane-bearing pullulan nanogels to safely and effectively deliver boron to tumor cells in vitro and in vivo and, consequently, assess their potential as a boron neutron capture therapeutic...
December 27, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28018804/extracalvarial-composite-infantile-myofibromatosis-case-report-and-literature-review
#20
Alexander Ivanov, Tibor Valyi-Nagy, Dimitrios Nikas
Infantile soft tissue tumors of the head are very rare and the majority of them are myofibromas. The authors present the case of a 1-day-old boy with a scalp tumor with several distinct histopathological features including myofibroma, hemangiopericytoma, and fibrosarcoma consistent with the diagnosis of composite infantile myofibromatosis. Genetic testing was negative for trisomy 17, translocation (12; 15), FUS, and ETV6 translocations. Despite the ominous histopathological features, the clinical course was benign...
December 2016: European Journal of Pediatric Surgery Reports
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