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Cancer Biotherapy & Radiopharmaceuticals

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https://www.readbyqxmd.com/read/28414551/long-noncoding-rna-mnx1-as1-knockdown-inhibits-cell-proliferation-and-migration-in-ovarian-cancer
#1
Yan Lv, Huan Li, Fengling Li, Peishu Liu, Xinrui Zhao
Long noncoding RNAs (lncRNAs) have recently emerged as pivotal regulators that govern fundamental biological processes and disease pathogenesis. LncRNA MNX1-AS1 has been reported to promote cell proliferation and invasion in gallbladder cancer, but its biological role and regulatory mechanism in ovarian cancer are poorly defined. In this study, it was found that higher expression of lncRNA MNX1-AS1 is closely associated with International Federation of Gynecology and Obstetrics stage and lymphatic metastasis in ovarian cancer patients...
April 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28414550/expression-of-long-noncoding-rna-urothelial-cancer-associated-1-promotes-cisplatin-resistance-in-cervical-cancer
#2
Bi Wang, Zhi Huang, Rui Gao, Zhu Zeng, Weiming Yang, Yuan Sun, Wei Wei, Zhongqing Wu, Lei Yu, Qinshan Li, Shuai Zhang, Fenghu Li, Guoli Liu, Bingjie Liu, Li Leng, Wei Zhan, Yanlong Yu, Guozhen Yang, Shi Zhou
Cisplatin resistance is still one of the main reasons for failure of clinical therapy for cervical cancer. But the underlying molecular mechanisms involved in cisplatin resistance of cervical cancer have still remained unclear. Recent studies reported that long noncoding RNAs (lncRNAs) are novel nonprotein-coding transcripts, which might play a key role in cancer biogenesis and prognosis. One of the lncRNAs, urothelial cancer associated 1 (UCA1), has been shown to promote different types of cancer cell proliferation, migration, and invasion...
April 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28380302/discrepancy-between-tumor-antigen-distribution-and-radiolabeled-antibody-binding-in-a-nude-mouse-xenograft-model-of-human-melanoma
#3
Yong-Il Kim, Jin Chul Paeng, Gi Jeong Cheon, Keon Wook Kang, Dong Soo Lee, June-Key Chung
OBJECTIVES: Biodistribution of antibodies is vital to successful immunoscintigraphy/immunotherapy, and it is assumed to be similar to antigen distribution. We measured and compared the binding pattern of radiolabeled antibody to tissue antigen distribution in a nude mouse xenograft model of human melanoma. METHODS: We transplanted 10(7) FEM-XII human melanoma cells into the right flank of five nude mice. For the control, we transplanted 5 × 10(6) LS174T human colon cancer cells into the left flank...
April 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28358602/in-vitro-incorporation-of-radioiodinated-eugenol-on-adenocarcinoma-cell-lines-caco2-mcf7-and-pc3
#4
Emine Dervis, Ayfer Yurt Kilcar, Emin Ilker Medine, Volkan Tekin, Buse Cetkin, Emre Uygur, Fazilet Zumrut Biber Muftuler
Recently, the synthesis of radiolabeled plant origin compounds has been increased due to their high uptake on some cancer cell lines. Eugenol (EUG), a phenolic natural compound in the essential oils of different spices such as Syzygium aromaticum (clove), Pimenta racemosa (bay leaves), and Cinnamomum verum (cinnamon leaf), has been exploited for various medicinal applications. EUG has antiviral, antioxidant, and anti-inflammatory functions and several anticancer properties. The objective of this article is to synthesize radioiodinated ((131)I) EUG and investigate its effect on Caco2, MCF7, and PC3 adenocarcinoma cell lines...
April 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28301262/-213-bi-labeled-prostate-specific-membrane-antigen-targeting-agents-induce-dna-double-strand-breaks-in-prostate-cancer-xenografts
#5
Julie Nonnekens, Kristell L S Chatalic, Janneke D M Molkenboer-Kuenen, Cecile E M T Beerens, Frank Bruchertseifer, Alfred Morgenstern, Joke Veldhoven-Zweistra, Margret Schottelius, Hans-Jürgen Wester, Dik C van Gent, Wytske M van Weerden, Otto C Boerman, Marion de Jong, Sandra Heskamp
BACKGROUND: Up to now, prostate-specific membrane antigen (PSMA)-targeted radionuclide therapy mainly focused on β-emitting radionuclides. Herein, two new (213)Bi-labeled agents for PSMA-targeted α therapy of prostate cancer (PCa) are reported. METHODS: The biodistribution of (213)Bi-labeled small-molecule inhibitor PSMA I&T and nanobody JVZ-008 was evaluated in mice bearing PSMA-positive LNCaP xenografts. DNA damage response was followed using LNCaP cells and LNCaP xenografts...
March 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28301261/a-radiolabeled-fully-human-antibody-to-human-aspartyl-asparaginyl-%C3%AE-hydroxylase-is-a-promising-agent-for-imaging-and-therapy-of-metastatic-breast-cancer
#6
Ekaterina Revskaya, Zewei Jiang, Alfred Morgenstern, Frank Bruchertseifer, Muctarr Sesay, Susan Walker, Steven Fuller, Michael S Lebowitz, Claudia Gravekamp, Hossein A Ghanbari, Ekaterina Dadachova
There is a need for novel effective and safe therapies for metastatic breast cancer based on targeting tumor-specific molecular markers of cancer. Human aspartyl (asparaginyl) β-hydroxylase (HAAH) is a highly conserved enzyme that hydroxylates epidermal growth factor-like domains in transformation-associated proteins and is overexpressed in a variety of cancers, including breast cancer. A fully human monoclonal antibody (mAb) PAN-622 has been developed to HAAH. In this study, they describe the development of PAN-622 mAb as an agent for imaging and radioimmunotherapy of metastatic breast cancer...
March 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28301260/cancer-targeting-potential-of-99m-tc-finasteride-in-experimental-model-of-prostate-carcinogenesis
#7
Gowsia Jan, Neelima D Passi, Devinder Kumar Dhawan, Vijayta Dani Chadha
This study aimed to radiolabel finasteride, a novel 5α-reductase inhibitor, to evaluate its cancer targeting potential in experimental model of prostate carcinogenesis. Finasteride was effectively radiolabeled with (99m)Tc and showed >90% labeling efficiency. The radiopharmaceutical was found to be stable up to 6 hours in rat serum at 37°C. The blood kinetics of the (99m)Tc-finasteride followed a biphasic release pattern, whereby fast-release phase was observed at 15 seconds and a slow-release phase was observed after 30 minutes of administration...
March 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28301259/novel-treatment-of-melanoma-combined-parasite-derived-peptide-gk-1-and-anti-programmed-death-ligand-1-therapy
#8
Jesus Vera-Aguilera, Armando Perez-Torres, Diego Beltran, Cynthia Villanueva-Ramos, Mitchell Wachtel, Eduardo Moreno-Aguilera, Carlos Vera-Aguilera, Gary Ventolini, Raul Martínez-Zaguilán, Souad R Sennoune
Recent successes in the development of new therapies for metastatic melanoma, such as mitogen-activated protein kinase pathway inhibitors, anticytotoxic T lymphocyte-associated antigen-4, and programmed cell death protein 1/programmed cell death ligand 1 (PD-L1) pathway-blocking antibodies, as well as combination strategies, all yielded promising results, changing the continually evolving landscape of therapeutic options for patients with melanoma. One promising new treatment modality is based on the use of immunomodulatory monoclonal antibodies that enhance the function of components of the antitumor immune response such as T cells or block immunologic checkpoints that restrain effective antitumor immunity...
March 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28186846/in-vitro-mouse-and-human-serum-stability-of-a-heterobivalent-dual-target-probe-that-has-strong-affinity-to-gastrin-releasing-peptide-and-neuropeptide-y1-receptors-on-tumor-cells
#9
Arijit Ghosh, Natarajan Raju, Michael Tweedle, Krishan Kumar
Receptor-targeting radiolabeled molecular probes with high affinity and specificity are useful in studying and monitoring biological processes and responses. Dual- or multiple-targeting probes, using radiolabeled metal chelates conjugated to peptides, have potential advantages over single-targeting probes as they can recognize multiple targets leading to better sensitivity for imaging and radiotherapy when target heterogeneity is present. Two natural hormone peptide receptors, gastrin-releasing peptide (GRP) and Y1, are specifically interesting as their expression is upregulated in most breast and prostate cancers...
February 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28128645/development-of-semiautomated-module-for-preparation-of-131-i-labeled-lipiodol-for-liver-cancer-therapy
#10
Archana Mukherjee, Suresh Subramanian, Rajwardhan Ambade, Bhaurao Avhad, Ashutosh Dash, Aruna Korde
Intra-arterial injection of (131)I Lipiodol is an effective treatment option for primary hepatocellular carcinoma as it delivers high radiation dose to liver tumor tissue with minimal accumulation in adjacent normal tissue. The present article demonstrates design, fabrication, and utilization of a semiautomated radiosynthesis module for preparation of (131)I labeled Lipiodol. The radiolabeling method was standardized for preparation of patient dose of (131)I labeled Lipiodol radiochemical yield (RCY); radiochemical purity (RCP) and pharmaceutical purity of the product were determined using optimized procedures...
February 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28118040/parp-1-expression-quantified-by-18-f-fluorthanatrace-a-biomarker-of-response-to-parp-inhibition-adjuvant-to-radiation-therapy
#11
Samuel Sander Effron, Mehran Makvandi, Lilie Lin, Kuiying Xu, Shihong Li, Hsiaoju Lee, Catherine Hou, Daniel A Pryma, Cameron Koch, Robert H Mach
INTRODUCTION: Poly (ADP-ribose) polymerase 1 (PARP-1) is the major target of clinical PARP inhibitors and is a potential predictive biomarker for response to therapy. Due to the limited success of PARP inhibitors as monotherapy, investigators have shifted the clinical role of PARP inhibitors to the adjuvant setting. In this study, we evaluate the radiotracer [(18)F]FluorThanatrace ([(18)F]FTT) as a marker of PARP expression in vitro and the associated biological implications of PARP-1 expression in PARP inhibitor treatment adjuvant to radiation therapy...
February 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28118037/downregulation-of-extracellular-matrix-metalloproteinase-inducer-by-scfv-m6-1b9-intrabody-suppresses-cervical-cancer-invasion-through-inhibition-of-urokinase-type-plasminogen-activator
#12
Tipattaraporn Panich, Khajornsak Tragoolpua, Supansa Pata, Chatchai Tayapiwatana, Nutjeera Intasai
Overexpression of extracellular matrix metalloproteinase inducer (EMMPRIN) accelerates tumor invasion and metastasis via activation of matrix metalloproteinases (MMPs) and urokinase-type plasminogen activator (uPA) expression. The authors were interested in whether the scFv-M6-1B9 intrabody against EMMPRIN that retains EMMPRIN in endoplasmic reticulum could be a potential tool to suppress cervical cancer invasion through inhibition of uPA. The chimeric adenoviral vector Ad5/F35-scFv-M6-1B9 was transferred into human cervical carcinoma HeLa cells to produce the scFv-M6-1B9 intrabody against EMMPRIN...
February 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28118029/cytotoxic-effects-of-the-therapeutic-radionuclide-rhenium-188-combined-with-taxanes-in-human-prostate-carcinoma-cell-lines
#13
Rogier Lange, Rob Ter Heine, Wessel N van Wieringen, Adrienne M Tromp, Mayke Paap, Haiko J Bloemendal, John M H de Klerk, N Harry Hendrikse, Albert A Geldof
OBJECTIVE: Rhenium-188-HEDP is an effective radiopharmaceutical for the treatment of painful bone metastases from prostate cancer. The effectiveness of the β-radiation emitted by (188)Re might be enhanced by combination with chemotherapy, using the radiosensitization concept. Therefore, the authors investigated the combined treatment of the taxanes, docetaxel and cabazitaxel, with (188)Re in prostate carcinoma cell lines. MATERIALS AND METHODS: The cytotoxic effects of single and combined treatment with taxanes and (188)Re were investigated in three human prostate carcinoma cell lines (PC-3, DU 145, and LNCaP), using the colony-forming assay...
February 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27996313/prognostic-importance-of-bone-marrow-uptake-on-baseline-18-f-fdg-positron-emission-tomography-in-diffuse-large-b-cell-lymphoma
#14
Cigdem Soydal, Elif Berna Koksoy, Arzu Yasar, Ebru Turgal, Beyza Doganay Erdogan, Hakan Akbulut, Nuriye Ozlem Kucuk
AIM: To define the role of (18)F-flourodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) in the detection of bone marrow (BM) involvement in patients with diffuse large B cell lymphoma (DLBCL). MATERIALS AND METHODS: Fifty-four (mean age: 55.5 ± 18.3 years, 20 female and 34 male) DLBCL patients who underwent pretreatment (18)F-FDG PET/CT were included to the study. Focal or diffuse BM (18)F-FDG uptake that is higher than mediastinal blood pool uptake was accepted as positive...
December 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27996312/overexpression-of-tspan8-promotes-tumor-cell-viability-and-proliferation-in-nonsmall-cell-lung-cancer
#15
Zheng Dong, Lijiang Zhao, Shijun Lu, Jie Xiong, Zhiguang Geng
BACKGROUND: Overexpression of TSPAN8 has been involved in several epithelial cancers and TSPAN8 can form a complex with a variety of proteins to participate in several import cellular functions. However, the effects of TSPAN8 in nonsmall cell lung cancer (NSCLC) remain unclear. MATERIALS AND METHODS: In this study, the authors determined the expression of TSPAN in several NSCLC cell lines (95C, A549, H1299, and 95D) and human bronchial epithelial (HBE) cells. Furthermore, the authors investigated the biological function of TSPAN8 in NSCLC cell lines using gain-of-function and loss-of-function assays, as well as the underlying mechanisms...
December 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27996311/evaluating-the-application-of-tissue-specific-dose-kernels-instead-of-water-dose-kernels-in-internal-dosimetry-a-monte-carlo-study
#16
Maryam Khazaee Moghadam, Alireza Kamali Asl, Parham Geramifar, Habib Zaidi
PURPOSE: The aim of this work is to evaluate the application of tissue-specific dose kernels instead of water dose kernels to improve the accuracy of patient-specific dosimetry by taking tissue heterogeneities into consideration. MATERIALS AND METHODS: Tissue-specific dose point kernels (DPKs) and dose voxel kernels (DVKs) for yttrium-90 ((90)Y), lutetium-177 ((177)Lu), and phosphorus-32 ((32)P) are calculated using the Monte Carlo (MC) simulation code GATE (version 7)...
December 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27898232/unfolded-protein-response-promotes-doxorubicin-induced-nonsmall-cell-lung-cancer-cells-apoptosis-via-the-mtor-pathway-inhibition
#17
Xiaofang Zhao, Yan Yang, Fuli Yao, Bin Xiao, Ying Cheng, Chunhong Feng, Chunyan Duan, Chunyan Zhang, Youping Liu, Hong Li, Bo Xiao, Rongyang Dai
Drug resistance is extremely common in nonsmall cell lung cancer (NSCLC) and is one of the major problems in NSCLC chemotherapy. However, the detailed mechanisms remain largely unknown. Unfolded protein response (UPR) is involved in the tumorigenesis of NSCLC. Here, the authors demonstrated that the UPR promotes poly (ADP-ribose) polymerase activation (PARP) cleavage in NSCLC cells on doxorubicin treatment, which is a hallmark of apoptosis and caspase activation. In NSCLC cells, doxorubicin treatment triggers the UPR activation, which subsequently promotes doxorubicin-mediated apoptosis...
December 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27831763/thyroid-patient-salivary-radioiodine-transit-and-dysfunction-assessment-using-chewing-gums
#18
Demetrios Okkalides
Radiation-induced salivary gland dysfunction is the most frequent side-effect of I-131 thyroid therapy. Here, a novel saliva sampling method with ordinary chewing gums administered to the patients at appropriate time intervals post-treatment (TIPT) was used to relate this effect to chewing gum saliva activity (CGSA) content. Saliva samples were acquired after the oral administration of prescribed I-131 activity (radioactivity administered [RA]) to 19 differentiated thyroid cancer (DTC) and 16 hyperthyroidism patients of the radioisotope unit (RIU) during 2014 and 2015...
November 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27831762/in-vivo-magnetic-resonance-imaging-of-cd8-t-lymphocytes-recruiting-to-glioblastoma-in-mice
#19
Anning Li, Yue Wu, Feng Tang, Wei Li, Xiaoyuan Feng, Zhenwei Yao
Noninvasive in vivo tracking of adopted immune cells would help improve immunotherapy on glioblastoma. In this study, the authors tried to track adoptive CD8+ T lymphocytes in an in situ GL261 glioblastoma mouse model with magnetic resonance imaging (MRI). CD8+ T lymphocytes from spleen of preimmunized GL261 glioblastoma mice were labeled with superparamagnetic iron oxide, with polylysine as transfection agent. From Prussian blue staining, the labeling efficiency was 0.77% ± 0.06%, without altering cell viability and function...
November 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27831761/prognostic-importance-of-the-presence-of-early-metabolic-response-and-absence-of-extrahepatic-metastasis-after-selective-internal-radiation-therapy-in-colorectal-cancer-liver-metastasis
#20
Cigdem Soydal, Nuriye Ozlem Kucuk, Deniz Balci, Ethem Gecim, Sadik Bilgic, Atilla Halil Elhan
AIMS: In this study, the authors aimed to identify prognostic factors after selective internal radiation therapy (SIRT) for colorectal cancer (CRC) liver metastasis. METHODS: Forty-nine (28 male, 21 female; mean age: 64.6 ± 10.8) patients who received SIRT for CRC liver metastasis were studied. Effects of number (<5 vs. ≥5), maximum dimension, and standardized uptake value (SUV) of liver metastases, liver tumor load (<25% vs. 26%-50% vs. 51%-75%), presence of extrahepatic disease, and metabolic early response on overall survival were analyzed...
November 2016: Cancer Biotherapy & Radiopharmaceuticals
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