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Neoplasia: An International Journal for Oncology Research

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https://www.readbyqxmd.com/read/28787674/the-volume-of-three-dimensional-cultures-of-cancer-cells-invitro-influences-transcriptional-profile-differences-and-similarities-with-monolayer-cultures-and-xenografted-tumors
#1
Erwin R Boghaert, Xin Lu, Paul E Hessler, Thomas P McGonigal, Anatol Oleksijew, Michael J Mitten, Kelly Foster-Duke, Jonathan A Hickson, Vitor E Santo, Catarina Brito, Tamar Uziel, Kedar S Vaidya
Improving the congruity of preclinical models with cancer as it is manifested in humans is a potential way to mitigate the high attrition rate of new cancer therapies in the clinic. In this regard, three-dimensional (3D) tumor cultures in vitro have recently regained interest as they have been acclaimed to have higher similarity to tumors in vivo than to cells grown in monolayers (2D). To identify cancer functions that are active in 3D rather than in 2D cultures, we compared the transcriptional profiles (TPs) of two non-small cell lung carcinoma cell lines, NCI-H1650 and EBC-1 grown in both conditions to the TP of xenografted tumors...
August 5, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28780387/evaluation-of-the-response-of-intracranial-xenografts-to-vegf-signaling-inhibition-using-multiparametric-mri
#2
Jessica K R Boult, Gary Box, Maria Vinci, Lara Perryman, Suzanne A Eccles, Chris Jones, Simon P Robinson
Vascular endothelial growth factor A (VEGF-A) is considered one of the most important factors in tumor angiogenesis, and consequently, a number of therapeutics have been developed to inhibit VEGF signaling. Therapeutic strategies to target brain malignancies, both primary brain tumors, particularly in pediatric patients, and metastases, are lacking, but targeting angiogenesis may be a promising approach. Multiparametric MRI was used to investigate the response of orthotopic SF188(luc) pediatric glioblastoma xenografts to small molecule pan-VEGFR inhibitor cediranib and the effects of both cediranib and cross-reactive human/mouse anti-VEGF-A antibody B20-4...
August 3, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28772241/nf-%C3%AE%C2%BAb-p65-overexpression-promotes-bladder-cancer-cell-migration-via-fbw7-mediated-degradation-of-rhogdi%C3%AE-protein
#3
Junlan Zhu, Yang Li, Caiyi Chen, Jiugao Ma, Wenrui Sun, Zhongxian Tian, Jingxia Li, Jiheng Xu, Claire S Liu, Dongyun Zhang, Chuanshu Huang, Haishan Huang
BACKGROUND: Since invasive bladder cancer (BC) is one of the most lethal urological malignant tumors worldwide, understanding the molecular mechanisms that trigger the migration, invasion, and metastasis of BC has great significance in reducing the mortality of this disease. Although RelA/p65, a member of the NF-kappa B transcription factor family, has been reported to be upregulated in human BCs, its regulation of BC motility and mechanisms have not been explored yet. METHODS: NF-κBp65 expression was evaluated in N-butyl-N-(4-hydroxybutyl)-nitrosamine (BBN)-induced high invasive BCs by immunohistochemistry staining and in human BC cell lines demonstrated by Western Blot...
July 31, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28753442/the-antitumor-activity-of-imgn529-a-cd37-targeting-antibody-drug-conjugate-is-potentiated-by-rituximab-in-non-hodgkin-lymphoma-models
#4
Stuart W Hicks, Katharine C Lai, L Cristina Gavrilescu, Yong Yi, Surina Sikka, Prerak Shah, Meghan E Kelly, Jenny Lee, Leanne Lanieri, Jose F Ponte, Callum M Sloss, Angela Romanelli
Naratuximab emtansine (IMGN529) is an investigational antibody-drug conjugate consisting of a CD37-targeting antibody conjugated to the maytansine-derived microtuble disruptor, DM1. IMGN529 has shown promising preclinical and clinical activity in non-Hodgkin lymphoma, including diffuse large B-cell lymphoma (DLBCL). Due to the aggressive nature of the disease, DLBCL is often treated with combination therapies to maximize clinical outcomes; therefore, we investigated the potential of combining IMGN529 with both standard-of-care and emerging therapies against multiple oncology-relevant targets and pathways...
July 25, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28704762/combined-inhibition-of-cdk4-6-and-pi3k-akt-mtor-pathways-induces-a-synergistic-anti-tumor-effect-in-malignant-pleural-mesothelioma-cells
#5
Mara A Bonelli, Graziana Digiacomo, Claudia Fumarola, Roberta Alfieri, Federico Quaini, Angela Falco, Denise Madeddu, Silvia La Monica, Daniele Cretella, Andrea Ravelli, Paola Ulivi, Michela Tebaldi, Daniele Calistri, Angelo Delmonte, Luca Ampollini, Paolo Carbognani, Marcello Tiseo, Andrea Cavazzoni, Pier Giorgio Petronini
Malignant pleural mesothelioma (MPM) is a progressive malignancy associated to the exposure of asbestos fibers. The most frequently inactivated tumor suppressor gene in MPM is CDKN2A/ARF, encoding for the cell cycle inhibitors p16(INK4a) and p14(ARF), deleted in about 70% of MPM cases. Considering the high frequency of alterations of this gene, we tested in MPM cells the efficacy of palbociclib (PD-0332991), a highly selective inhibitor of cyclin-dependent kinase (CDK) 4/6. The analyses were performed on a panel of MPM cell lines and on two primary culture cells from pleural effusion of patients with MPM...
July 10, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28658648/prevention-of-human-lymphoproliferative-tumor-formation-in-ovarian-cancer-patient-derived-xenografts
#6
Kristina A Butler, Xiaonan Hou, Marc A Becker, Valentina Zanfagnin, Sergio Enderica-Gonzalez, Daniel Visscher, Kimberly R Kalli, Piyawan Tienchaianada, Paul Haluska, S John Weroha
Interest in preclinical drug development for ovarian cancer has stimulated development of patient-derived xenograft (PDX) or tumorgraft models. However, the unintended formation of human lymphoma in severe combined immunodeficiency (SCID) mice from Epstein-Barr virus (EBV)-infected human lymphocytes can be problematic. In this study, we have characterized ovarian cancer PDXs which developed human lymphomas and explore methods to suppress lymphoproliferative growth. Fresh human ovarian tumors from 568 patients were transplanted intraperitoneally in SCID mice...
June 25, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28654865/molecular-effects-of-doxorubicin-on-choline-metabolism-in-breast-cancer
#7
Menglin Cheng, Asif Rizwan, Lu Jiang, Zaver M Bhujwalla, Kristine Glunde
Abnormal choline phospholipid metabolism is a hallmark of cancer. The magnetic resonance spectroscopy (MRS) detected total choline (tCho) signal can serve as an early noninvasive imaging biomarker of chemotherapy response in breast cancer. We have quantified the individual components of the tCho signal, glycerophosphocholine (GPC), phosphocholine (PC) and free choline (Cho), before and after treatment with the commonly used chemotherapeutic drug doxorubicin in weakly metastatic human MCF7 and triple-negative human MDA-MB-231 breast cancer cells...
June 24, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28654864/wolf-hirschhorn-syndrome-candidate-1-whsc1-functions-as-a-tumor-suppressor-by-governing-cell-differentiation
#8
Chuan Yu, Xiaomin Yao, Linjie Zhao, Ping Wang, Qian Zhang, Chengjian Zhao, Shaohua Yao, Yuquan Wei
Wolf-Hirschhorn syndrome candidate 1 (WHSC1) is a histone 3 lysine 36 (H3K36) specific methyltransferase that is frequently deleted in Wolf-Hirschhorn syndrome (WHS). Whsc1 is also found mutated in a subgroup of B-cell derived malignant diseases by genomic translocation or point mutation, both of which resulted in hyperactivity of WHSC1 mediated H3K36 methylation and uncontrolled cell proliferation, suggesting that whsc1 functions as an oncogene. However, here we provided evidences to show that whsc1 also has tumor suppressor functions...
June 24, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28587956/activated-natural-killer-cells-mediate-the-suppressive-effect-of-interleukin-4-on-tumor-development-via-stat6-activation-in-an-atopic-condition-melanoma-model
#9
Dong Ju Son, Yu Yeon Jung, Mi Hee Park, Hye Lim Lee, Min Ji Song, Hwan-Soo Yoo, Dae Youn Hwang, Sang Bae Han, Jin Tae Hong
A protective effect of allergy for cancer has been suggested, but the results are somewhat conflicting, and the mechanism remains elusive. Interleukin-4 (IL-4) signaling has been identified as a potentially important pathway in the development of allergies and the suppression of cancer development. To evaluate the allergy responses in IL-4-mediated tumor development, we compared the growth of B16F10 melanoma cells in 4% phthalic anhydride (PA)-treated IL-4/Luc/CNS-1 transgenic mice (IL-4 mice) and acetone-olive oil (AOO)-treated IL-4 mice as a control for 3 weeks...
June 3, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28582704/a-novel-antagonist-of-the-immune-checkpoint-protein-adenosine-a2a-receptor-restores-tumor-infiltrating-lymphocyte-activity-in-the-context-of-the-tumor-microenvironment
#10
Melanie Mediavilla-Varela, Julio Castro, Alberto Chiappori, David Noyes, Dalia C Hernandez, John Stagg, Scott J Antonia
BACKGROUND: Therapeutic strategies targeting immune checkpoint proteins have led to significant responses in patients with various tumor types. The success of these studies has led to the development of various antibodies/inhibitors for the different checkpoint proteins involved in immune evasion of the tumor. Adenosine present in high concentrations in the tumor microenvironment activates the immune checkpoint adenosine A2a receptor (A2aR), leading to the suppression of antitumor responses...
June 2, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28582703/the-cell-cycle-inhibitors-p21-cip1-and-p27-kip1-control-proliferation-but-enhance-dna-damage-resistance-of-glioma-stem-cells
#11
Olivia Morris-Hanon, Verónica Alejandra Furmento, María Soledad Rodríguez-Varela, Sofía Mucci, Damián Darío Fernandez-Espinosa, Leonardo Romorini, Gustavo Emilio Sevlever, María Elida Scassa, Guillermo Agustín Videla-Richardson
High-grade gliomas are the most prevalent and lethal primary brain tumors. They display a hierarchical arrangement with a population of self-renewing and highly tumorigenic cells called cancer stem cells. These cells are thought to be responsible for tumor recurrence, which make them main candidates for targeted therapies. Unbridled cell cycle progression may explain the selective sensitivity of some cancer cells to treatments. The members of the Cip/Kip family p21(Cip1) and p27(Kip1) were initially considered as tumor suppressors based on their ability to block proliferation...
June 2, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28739012/corrigendum-to-synergistic-activity-of-n-hydroxy-7-2-naphthylthio-heptanomide-and-sorafenib-against-cancer-stem-cells-anaplastic-thyroid-cancer-neoplasia-19-2017-145-153
#12
Ki Cheong Park, Seok-Mo Kim, Jeong Yong Jeon, Bup-Woo Kim, Hyeung Kyoo Kim, HoJin Chang, Yong Sang Lee, Soo Young Kim, Seung Hoon Choi, Cheong Soo Park, Hang-Seok Chang
No abstract text is available yet for this article.
August 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28739011/corrigendum-to-physical-and-functional-interactions-between-ell2-and-rb-in-the-suppression-of-prostate-cancer-cell-proliferation-migration-and-invasion-neoplasia-19-2017-207-215
#13
Xiaonan Qiu, Laura E Pascal, Qiong Song, Yachen Zang, Junkui Ai, Katherine J O'Malley, Joel B Nelson, Zhou Wang
No abstract text is available yet for this article.
August 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28732212/ualcan-a-portal-for-facilitating-tumor-subgroup-gene-expression-and-survival-analyses
#14
Darshan S Chandrashekar, Bhuwan Bashel, Sai Akshaya Hodigere Balasubramanya, Chad J Creighton, Israel Ponce-Rodriguez, Balabhadrapatruni V S K Chakravarthi, Sooryanarayana Varambally
Genomics data from The Cancer Genome Atlas (TCGA) project has led to the comprehensive molecular characterization of multiple cancer types. The large sample numbers in TCGA offer an excellent opportunity to address questions associated with tumo heterogeneity. Exploration of the data by cancer researchers and clinicians is imperative to unearth novel therapeutic/diagnostic biomarkers. Various computational tools have been developed to aid researchers in carrying out specific TCGA data analyses; however there is need for resources to facilitate the study of gene expression variations and survival associations across tumors...
August 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28654863/stat6-promotes-intestinal-tumorigenesis-in-a-mouse-model-of-adenomatous-polyposis-by-expansion-of-mdscs-and-inhibition-of-cytotoxic-cd8-response
#15
Asha Jayakumar, Alfred L M Bothwell
Intestinal tumorigenesis in the ApcMin/+ model is initiated by aberrant activation of Wnt pathway. Increased IL-4 expression in human colorectal cancer tissue and growth of colon cancer cell lines implied that IL-4-induced Stat6-mediated tumorigenic signaling likely contributes to intestinal tumor progression in ApcMin/+ mice. Stat6 also appears to promote expansion of myeloid-derived suppressor cells (MDSCs) cells. MDSCs promote polyp formation in the ApcMin/+ model. Hence, Stat6 could have a broad role in coordinating both polyp cell proliferation and MDSC expansion...
August 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28628795/knockout-of-the-nogo-b-gene-attenuates-tumor-growth-and-metastasis-in-hepatocellular-carcinoma
#16
Bo Zhu, Shaobo Chen, Xiaoding Hu, Xiaofeng Jin, Yichen Le, Lihuan Cao, Zhonghua Yuan, Zhen Lin, Songmin Jiang, Lichun Sun, Long Yu
Human hepatocellular carcinoma (HCC) is a malignant cancer. It is a challenge to develop anti-HCC drugs due to HCC's extreme aggressiveness and with the sensitivity of the liver to show severe adverse effects. More importantly, the precise mechanisms causing HCC pathogenicity are not known. Our previous study disclosed Nogo-B as a reticulon 4 (Rtn4) family member. In the present study, we first identified that Nogo-B played a critical role in HCC progression. We found, via in vitro and in vivo assays, that Nogo-B was expressed aberrantly in primary HCC tumor tissues and immortal HCC cells but was relatively scarce in the normal liver tissues or cells...
July 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28624626/alternative-polyadenylation-patterns-for-novel-gene-discovery-and-classification-in-cancer
#17
Oguzhan Begik, Merve Oyken, Tuna Cinkilli Alican, Tolga Can, Ayse Elif Erson-Bensan
Certain aspects of diagnosis, prognosis, and treatment of cancer patients are still important challenges to be addressed. Therefore, we propose a pipeline to uncover patterns of alternative polyadenylation (APA), a hidden complexity in cancer transcriptomes, to further accelerate efforts to discover novel cancer genes and pathways. Here, we analyzed expression data for 1045 cancer patients and found a significant shift in usage of poly(A) signals in common tumor types (breast, colon, lung, prostate, gastric, and ovarian) compared to normal tissues...
July 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28609680/characterization-and-targeting-of-platelet-derived-growth-factor-receptor-alpha-pdgfra-in-inflammatory-breast-cancer-ibc
#18
Madhura Joglekar-Javadekar, Steven Van Laere, Michael Bourne, Manal Moalwi, Pascal Finetti, Peter B Vermeulen, Daniel Birnbaum, Luc Y Dirix, Naoto Ueno, Monique Carter, Justin Rains, Abhijit Ramachandran, Francois Bertucci, Kenneth L van Golen
PURPOSE: Inflammatory breast cancer (IBC) is arguably the deadliest form of breast cancer due to its rapid onset and highly invasive nature. IBC carries 5- and 10-year disease-free survival rates of ~45% and <20%, respectively. Multiple studies demonstrate that in comparison with conventional breast cancer, IBC has a unique molecular identity. Here, we have identified platelet-derived growth factor receptor alpha (PDGFRA) as being uniquely expressed and active in IBC patient tumor cells...
July 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28601643/heterogeneous-cadherin-expression-and-multicellular-aggregate-dynamics-in-ovarian-cancer-dissemination
#19
Yuliya Klymenko, Jeffrey Johnson, Brandi Bos, Rachel Lombard, Leigh Campbell, Elizabeth Loughran, M Sharon Stack
Epithelial ovarian carcinoma spreads via shedding of cells and multicellular aggregates (MCAs) from the primary tumor into peritoneal cavity, with subsequent intraperitoneal tumor cell:mesothelial cell adhesion as a key early event in metastatic seeding. Evaluation of human tumor extracts and tissues confirms that well-differentiated ovarian tumors express abundant E-cadherin (Ecad), whereas advanced lesions exhibit upregulated N-cadherin (Ncad). Two expression patterns are observed: "mixed cadherin," in which distinct cells within the same tumor express either E- or Ncad, and "hybrid cadherin," wherein single tumor cell(s) simultaneously expresses both cadherins...
July 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28535453/inhibition-of-neddylation-modification-sensitizes-pancreatic-cancer-cells-to-gemcitabine
#20
Hua Li, Weihua Zhou, Lihui Li, Jianfu Wu, Xiaoli Liu, Lili Zhao, Lijun Jia, Yi Sun
Pancreatic ductal adenocarcinoma (PDAC) is the fourth leading cause of cancer death in the USA with a 5-year survival rate less than 3% to 5%. Gemcitabine remains as a standard care for PDAC patients. Although protein neddylation is abnormally activated in many human cancers, whether neddylation dysregulation is involved in PDAC and whether targeting neddylation would sensitize pancreatic cancer cells to gemcitabine remain elusive. Here we report that high expression of neddylation components, NEDD8 and NAE1, are associated with poor survival of PDAC patients...
June 2017: Neoplasia: An International Journal for Oncology Research
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