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https://www.readbyqxmd.com/read/28749618/radiation-induced-second-cancer-risk-from-external-beam-photon-radiotherapy-for-head-and-neck-cancer-impact-on-in-field-and-out-of-field-organs
#1
Vasanthan Sakthivel, Ganesh Kadirampatti Mani, Sunil Mani, Raghavendiran Boopathy
The purpose of this paper is to provide data on development of second primary cancers within or adjacent to tissue irradiated in the treatment of primary head and neck cancers using different techniques and modalities. Materials and methods: We selected five patients with HandN tumors located in base of the tongue for risk assessment. In order to examine the impact of choices of various planning techniques, numbers of beams and beam energy used in treatment plans - 7 and 9 field Intensity modulated radiotherapy (IMRT) plans using 6MV and 10 MV beam energies and a 6MV Volumetric modulated arc therapy (VMAT) plans were planned...
July 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28749573/il-6-stat3-signaling-as-a-promising-target-to-improve-the-efficacy-of-cancer-immunotherapy
#2
REVIEW
Hidemitsu Kitamura, Yosuke Ohno, Yujiro Toyoshima, Junya Ohtake, Shigenori Homma, Hideki Kawamura, Norihiko Takahashi, Akinobu Taketomi
Overcoming the immunosuppressive state in tumor microenvironments is a critical issue to improve the efficacy of cancer immunotherapy. Interleukin (IL)-6, a pleiotropic cytokine, is highly produced in the tumor-bearing host. Previous studies have indicated that IL-6 suppresses the antigen presentation ability of dendritic cells (DCs) through activation of signal transducer and activator of transcription 3 (STAT3). Thus, we focused on the precise effect of the IL-6/STAT3 signaling cascade on human DCs and the subsequent induction of antitumor T cell immune responses...
July 27, 2017: Cancer Science
https://www.readbyqxmd.com/read/28749470/mir-181d-and-c-myc-mediated-inhibition-of-cry2-and-fbxl3-reprograms-metabolism-in-colorectal-cancer
#3
Xiaofeng Guo, Yuekun Zhu, Xinya Hong, Mukun Zhang, Xingfeng Qiu, Zhenfa Wang, Zhongquan Qi, Xuehui Hong
Colorectal cancer (CRC) is the second major cause of tumor-related deaths. MicroRNAs (miRNAs) have pivotal roles in CRC progression. Here, we describe the effect of miR-181d on CRC cell metabolism and underlying molecular mechanism. Our data firmly demonstrated that knockdown of miR-181d suppressed CRC cell proliferation, migration, and invasion by impairing glycolysis. Mechanistically, miR-181d stabilized c-myc through directly targeting the 3'-UTRs of CRY2 and FBXL3, which subsequently increased the glucose consumption and the lactate production...
July 27, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28749462/keratin-23-promotes-telomerase-reverse-transcriptase-expression-and-human-colorectal-cancer-growth
#4
Ningning Zhang, Rui Zhang, Kun Zou, Wendan Yu, Wei Guo, Yingying Gao, Jia Li, Mei Li, Yidi Tai, Wenlin Huang, Chun Song, Wuguo Deng, Xiaonan Cui
The overexpression of human telomerase reverse transcriptase (hTERT) has been associated with the proliferation and migration of colorectal cancer (CRC) cells. We investigated the roles of KRT23 and hTERT in promoting CRC cell proliferation and migration. We verified the relationship between KRT23 and hTERT in CRC using streptavidin-agarose pulldown and chromatin immunoprecipitation (ChIP) assays. One hundred and fifty-four human CRC specimens were analyzed using immunohistochemistry. The roles of KRT23 and hTERT in cell growth and migration were studied using siRNA and lentiviruses in vivo and in vitro...
July 27, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28749461/dnmt1-maintained-hypermethylation-of-kr%C3%A3-ppel-like-factor-5-involves-in-the-progression-of-clear-cell-renal-cell-carcinoma
#5
Rong-Jie Fu, Wei He, Xiao-Bo Wang, Lei Li, Huan-Bin Zhao, Xiao-Ye Liu, Zhi Pang, Guo-Qiang Chen, Lei Huang, Ke-Wen Zhao
Clear cell renal cell carcinoma (ccRCC) is the major subtype of renal cell carcinoma (RCC) that is resistant to conventional radiation and chemotherapy. It is a challenge to explore effective therapeutic targets and drugs for this kind of cancer. Transcription factor Krüppel-like factor 5 (KLF5) exerts diverse functions in various tumor types. By analyzing cohorts of the Cancer Genome Atlas (TCGA) data sets, we find that KLF5 expression is suppressed in ccRCC patients and higher level of KLF5 expression is associated with better prognostic outcome...
July 27, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28749408/clinical-role-of-asct2-slc1a5-in-kras-mutated-colorectal-cancer
#6
Kosuke Toda, Gen Nishikawa, Masayoshi Iwamoto, Yoshiro Itatani, Ryo Takahashi, Yoshiharu Sakai, Kenji Kawada
Mutation in the KRAS gene induces prominent metabolic changes. We have recently reported that KRAS mutations in colorectal cancer (CRC) cause alterations in amino acid metabolism. However, it remains to be investigated which amino acid transporter can be regulated by mutated KRAS in CRC. Here, we performed a screening of amino acid transporters using quantitative reverse-transcription polymerase chain reaction (RT-PCR) and then identified that ASCT2 (SLC1A5) was up-regulated through KRAS signaling. Next, immunohistochemical analysis of 93 primary CRC specimens revealed that there was a significant correlation between KRAS mutational status and ASCT2 expression...
July 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28749252/the-role-of-dickkopf-1-as-a-potential-prognostic-marker-in-pancreatic-ductal-adenocarcinoma
#7
De-Jun Liu, Yue-Xia Xie, Xiao-Xing Liu, Yan-Miao Huo, Min-Wei Yang, Xue-Liang Fu, Wei Liu, Jian-Yu Yang, Jiao Li, Rong Hua, Pei-Feng Liu, Yong-Wei Sun, Jun-Feng Zhang
Dickkopf-1(DKK-1), the downstream target of β-catenin/T-cell factor, participates in a negative feedback loop in the Wnt signaling and reported as an important biomarker in many tumors. In this study, we analyzed the expression of DKK-1 in pancreatic ductal adenocarcinoma (PDAC) patients at both mRNA and protein levels. We used real-time PCR to detect the expression of DKK-1 in 32 PDAC and paired adjacent non-tumor tissues, results suggested that the expression of DKK-1 was increased in PDAC tissues. We found the similar results in the analysis of three independent microarray datasets...
July 27, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28749250/discovery-of-thalicthuberine-as-a-novel-antimitotic-agent-from-nature-that-disrupts-microtubule-dynamics-and-induces-apoptosis-in-prostate-cancer-cells
#8
Claire Levrier, Anja Rockstroh, Brian Gabrielli, Maria Kavallaris, Melanie Lehman, Rohan A Davis, Martin C Sadowski, Colleen C Nelson
We report for the first time the mechanism of action of the natural product thalicthuberine (TH) in prostate and cervical cancer cells. TH induced a strong accumulation of LNCaP cells in mitosis, severe mitotic spindle defects and asymmetric cell divisions, ultimately leading to mitotic catastrophe accompanied by cell death through apoptosis. However, unlike microtubule-binding drugs (vinblastine and paclitaxel), TH did not directly inhibit tubulin polymerization when tested in a cell-free system, whereas it reduced cellular microtubule polymer mass in LNCaP cells...
July 27, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28749231/phase-%C3%A2-study-of-concurrent-chemoradiotherapy-with-a-modified-target-volumes-delineation-method-for-inoperable-esophageal-cancer-patients
#9
Wenyi Zhang, Huifang Li, Xingxing Chen, Meng Su, Ruifang Lin, Changlin Zou
OBJECTIVE: A Phase || study was designed to test the safety and efficacy of concurrent chemoradiotherapy with a modified target volumes delineation method for inoperable esophageal cancer patients. METHODS: All eligible patients were treated with concurrent chemoradiotherapy. The method of delineating target volume was as follow: Planning gross target volume (PGTV) was defined as the primary gross tumor volume (GTV-t) plus a 3 cm margin longitudinally and a 0...
July 27, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28749203/cb002-a-novel-p53-tumor-suppressor-pathway-restoring-small-molecule-induces-tumor-cell-death-through-the-pro-apoptotic-protein-noxa
#10
Liz J Hernandez-Borrero, Shengliang Zhang, Amriti Lulla, David T Dicker, Wafik S El-Deiry
P53 tumor suppressor gene mutations occur in the majority of human cancers and contribute to tumor development, progression and therapy resistance. Direct functional restoration of p53 as a transcription factor has been difficult to achieve in the clinic. We performed a functional screen using a bioluminescence-based transcriptional read-out to identify small molecules that restore the p53 pathway in mutant p53-bearing cancer cells. We identified CB002, as a candidate that restores p53 function in mutant p53-expressing colorectal cancer cells and without toxicity to normal human fibroblasts...
July 27, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28749040/retraction-microrna-4656-is-a-prognostic-factor-and-tumor-suppressor-in-human-pancreatic-cancer-through-a-downstream-target-of-trka-by-xianglong-tan-jinyong-lv-guodong-zhao-zhiming-zhao-chenggang-li-yong-xu-and-minggen-hu
#11
https://www.readbyqxmd.com/read/28748912/a-novel-allosteric-site-in-casein-kinase-2%C3%AE-discovered-using-combining-bioinformatics-and-biochemistry-methods
#12
Hai-Ming Jiang, Jiang-Kai Dong, Kun Song, Tong-Dan Wang, Wen-Kang Huang, Jing-Miao Zhang, Xiu-Yan Yang, Ying Shen, Jian Zhang
Casein kinase 2 (CK2) is a highly pleiotropic serine-threonine kinase, which catalyzed phosphorylation of more than 300 proteins that are implicated in regulation of many cellular functions, such as signal transduction, transcriptional control, apoptosis and the cell cycle. On the other hand, CK2 is abnormally elevated in a variety of tumors, and is considered as a promising therapeutic target. The currently available ATP-competitive CK2 inhibitors, however, lack selectivity, which has impeded their development in cancer therapy...
July 27, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28748780/mir-133a-3p-targets-sumo-specific-protease-1-to-inhibit-cell-proliferation-and-cell-cycle-progress-in-colorectal-cancer
#13
Guo-Qiang Zhou, Fu Han, Zhi-Liang Shi, Liang Yu, Xue-Feng Li, Cheng Yu, Cheng-Long Shen, Dai-Wei Wan, Xin-Quo Zhu, Rui Li, Song-Bing He
Dysregulation of SUMO-specific protease 1(SENP1) expression has been reported in several kinds of cancer, including human colorectal and prostate cancers, proposing SENP1 as a oncogene with a critical role in cancer progression. MiR-133a-3p has been reported as a tumor suppressor in several malignant neoplasias. However, the precise molecular mechanisms underlying its role in colorectal cancer remain largely unknown. The aim of this work is to investigate the relationship between miR-133a-3p and SENP1 in colorectal cancer cells...
July 26, 2017: Oncology Research
https://www.readbyqxmd.com/read/28748750/chemical-space-of-flt3-inhibitors-as-the-potential-anti-aml-drugs
#14
Qingyuan Lan, Yanle Zhi, Hao Heng, Xiaoxing Guo, Haichun Liu, Yadong Chen, Tao Lu, Shuai Lu
FLT3 is a member of receptor tyrosine kinase III family, expressed in normal bone marrow cells, early progenitor cells and hematopoietic stem cells. The aberrant expression and function of FLT3 are strongly related leukemia, especially acute myeloid leukemia. Its complex amino-acid residues mutations can induce ligand independent activation and downstream signaling transduction, leading to constant proliferation of hematological tumor cells with poor prognosis. Hence FLT3 serves as a promising target in AML chemotherapy...
July 27, 2017: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/28748573/a-novel-humanized-anti-tumor-necrosis-factor-related-apoptosis-inducing-ligand-r2-monoclonal-antibody-induces-apoptotic-and-autophagic-cell-death
#15
Longfei Chen, Yuhe Qiu, Zhenliang Hao, Jiong Cai, Shuyong Zhang, Yanxin Liu, Dexian Zheng
It is well known that the tumor necrosis factor-related apoptosis-inducing ligand (TRAIL/TNFSF10) is specifically expressed in various tumor cells, but less or no expression in most normal tissues and cells. While TRAIL engages with its native death receptors, TRAIL receptor 1 (TRAIL-R1) or 2 (TRAIL-R2), usually elicits the tumor cell death by apoptosis. In this study, we report that a novel humanized monoclonal antibody against TRAIL-R2 (named as zaptuzumab) well remain the biological activity of the parental mouse antibody AD5-10 inducing cell death in various cancer cells, but little effect on normal cells...
July 27, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28748534/mir-130b-directly-targets-arhgap1-to-drive-activation-of-a-metastatic-cdc42-pak1-ap1-positive-feedback-loop-in-ewing-sarcoma
#16
Laura Satterfield, Ryan Shuck, Lyazat Kurenbekova, Wendy Allen-Rhoades, Dean Edwards, Shixia Huang, Kimal Rajapakshe, Cristian Coarfa, Lawrence A Donehower, Jason T Yustein
Ewing Sarcoma (ES) is a highly aggressive bone tumor with peak incidence in the adolescent population. It has a high propensity to metastasize, which is associated with dismal survival rates of approximately 25%. To further understand mechanisms of metastasis we investigated microRNA regulatory networks in ES. Our studies focused on miR-130b due to our analysis that enhanced expression of this microRNA has clinical relevance in multiple sarcomas, including ES. Our studies provide insights into a novel positive feedback network involving the direct regulation of miR-130b and activation of downstream signaling events contributing towards sarcoma metastasis...
July 27, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28748501/a-step-by-step-microrna-guide-to-cancer-development-and-metastasis
#17
REVIEW
Georgios S Markopoulos, Eugenia Roupakia, Maria Tokamani, Evangelia Chavdoula, Maria Hatziapostolou, Christos Polytarchou, Kenneth B Marcu, Athanasios G Papavassiliou, Raphael Sandaltzopoulos, Evangelos Kolettas
BACKGROUND: Cancer is one of the leading causes of mortality. The neoplastic transformation of normal cells to cancer cells is caused by a progressive accumulation of genetic and epigenetic alterations in oncogenes, tumor suppressor genes and epigenetic regulators, providing cells with new properties, collectively known as the hallmarks of cancer. During the process of neoplastic transformation cells progressively acquire novel characteristics such as unlimited growth potential, increased motility and the ability to migrate and invade adjacent tissues, the ability to spread from the tumor of origin to distant sites, and increased resistance to various types of stresses, mostly attributed to the activation of genetic stress-response programs...
July 26, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28748451/the-emerging-role-and-targetability-of-the-tca-cycle-in-cancer-metabolism
#18
REVIEW
Nicole M Anderson, Patrick Mucka, Joseph G Kern, Hui Feng
The tricarboxylic acid (TCA) cycle is a central route for oxidative phosphorylation in cells, and fulfills their bioenergetic, biosynthetic, and redox balance requirements. Despite early dogma that cancer cells bypass the TCA cycle and primarily utilize aerobic glycolysis, emerging evidence demonstrates that certain cancer cells, especially those with deregulated oncogene and tumor suppressor expression, rely heavily on the TCA cycle for energy production and macromolecule synthesis. As the field progresses, the importance of aberrant TCA cycle function in tumorigenesis and the potentials of applying small molecule inhibitors to perturb the enhanced cycle function for cancer treatment start to evolve...
July 26, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28748347/molecular-basis-of-pediatric-brain-tumors
#19
REVIEW
Alexia Klonou, Christina Piperi, Antonios N Gargalionis, Athanasios G Papavassiliou
Brain tumors emerge as the second commonest type of pediatric solid tumors following hematologic malignancies. Genomic profiling of low- and high-grade gliomas, ependymomas and medulloblastomas has revealed chromosomal abnormalities and specific gene mutations which have been associated with aberrant activation of crucial signal transduction pathways, including mitogen-activated protein kinase, mammalian target of rapamycin and retinoblastoma tumor suppressor signaling. Furthermore, pediatric high-grade gliomas are associated with chromatin remodeling defects and somatic histone gene mutations that affect prognosis...
July 26, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28748213/metabolic-reprogramming-underlies-metastatic-potential-in-an-obesity-responsive-murine-model-of-metastatic-triple-negative-breast-cancer
#20
Ciara H O'Flanagan, Emily L Rossi, Shannon B McDonell, Xuewen Chen, Yi-Hsuan Tsai, Joel S Parker, Jerry Usary, Charles M Perou, Stephen D Hursting
The vast majority of cancer-related deaths are due to metastatic disease, whereby primary tumor cells disseminate and colonize distal sites within the body. Triple negative breast cancer typically displays aberrant Wnt signaling, lacks effective targeted therapies, and compared with other breast cancer subtypes, is more likely to recur and metastasize. We developed a Wnt-driven lung metastasis model of triple negative breast cancer (metM-Wnt(lung)) through serial passaging of our previously described, nonmetastatic, claudin-low M-Wnt cell line...
2017: NPJ Breast Cancer
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