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https://www.readbyqxmd.com/read/28099441/puma-and-nf-kb-are-cell-signaling-predictors-of-reovirus-oncolysis-of-breast-cancer
#1
Chandini Thirukkumaran, Zhong-Qiao Shi, Ponnampalam Thirukkumaran, Joanne Luider, Karen Kopciuk, Jason Spurrell, Kate Elzinga, Don Morris
BACKGROUND AND PURPOSE: Reovirus is a ubiquitous RNA virus that exploits aberrant signaling pathways for its replication. The oncolytic potential of reovirus against numerous cancers under pre-clinical/clinical conditions has been documented by us and others. Despite its proven clinical activity, the underlying mechanisms of reovirus oncolysis is still not well elucidated. If reovirus therapy is to be optimized for cancer, including breast cancer patients, it is imperative to understand the mechanisms of reovirus oncolysis, especially in treatment of resistant tumour...
2017: PloS One
https://www.readbyqxmd.com/read/28098136/exome-and-genome-sequencing-of-nasopharynx-cancer-identifies-nf-%C3%AE%C2%BAb-pathway-activating-mutations
#2
Yvonne Y Li, Grace T Y Chung, Vivian W Y Lui, Ka-Fai To, Brigette B Y Ma, Chit Chow, John K S Woo, Kevin Y Yip, Jeongsun Seo, Edwin P Hui, Michael K F Mak, Maria Rusan, Nicole G Chau, Yvonne Y Y Or, Marcus H N Law, Peggy P Y Law, Zoey W Y Liu, Hoi-Lam Ngan, Pok-Man Hau, Krista R Verhoeft, Peony H Y Poon, Seong-Keun Yoo, Jong-Yeon Shin, Sau-Dan Lee, Samantha W M Lun, Lin Jia, Anthony W H Chan, Jason Y K Chan, Paul B S Lai, Choi-Yi Fung, Suet-Ting Hung, Lin Wang, Ann Margaret V Chang, Simion I Chiosea, Matthew L Hedberg, Sai-Wah Tsao, Andrew C van Hasselt, Anthony T C Chan, Jennifer R Grandis, Peter S Hammerman, Kwok-Wai Lo
Nasopharyngeal carcinoma (NPC) is an aggressive head and neck cancer characterized by Epstein-Barr virus (EBV) infection and dense lymphocyte infiltration. The scarcity of NPC genomic data hinders the understanding of NPC biology, disease progression and rational therapy design. Here we performed whole-exome sequencing (WES) on 111 micro-dissected EBV-positive NPCs, with 15 cases subjected to further whole-genome sequencing (WGS), to determine its mutational landscape. We identified enrichment for genomic aberrations of multiple negative regulators of the NF-κB pathway, including CYLD, TRAF3, NFKBIA and NLRC5, in a total of 41% of cases...
January 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28090316/the-role-of-tumour-necrosis-factor-in-hepatitis-b-infection-jekyll-and-hyde
#3
REVIEW
Zina Valaydon, Marc Pellegrini, Alexander Thompson, Paul Desmond, Peter Revill, Gregor Ebert
Chronic hepatitis B (CHB) is a major health problem worldwide and is associated with significant long-term morbidity and mortality. The hepatitis B virus (HBV) is a hepatotropic virus that is capable of integrating in the host nucleus permanently resulting in lifelong infection. To date, there is no definitive cure for HBV, as our current treatments cannot eradicate the viral reservoir that has integrated in the liver. Elucidating the immunopathogenesis is key to finding a therapeutic target for HBV as the virus is not in itself cytopathic but the immune response to the virus causes the majority of the cellular injury...
December 2016: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28078736/investigation-of-underlying-comorbidities-as-risk-factors-for-symptomatic-human-hepatitis-e-virus-infection
#4
S Zhang, C Chen, J Peng, X Li, D Zhang, J Yan, Y Zhang, C Lu, J Xun, W Li, Y Ling, Y Huang, L Chen
BACKGROUND: Symptomatic Hepatitis E virus (HEV) infection occurs in few infected subjects, and the risk factors are not completely known. AIMS: To explore the risk factors for adverse clinical outcomes in acute HEV infections. METHODS: A large retrospective study was conducted. The baseline characteristics, clinical outcomes, and laboratory data of 512 acute HEV infection cases were analysed using logistic regression models. RESULTS: All patients exhibited autochthonous sporadic HEV infections, and most were elderly...
January 12, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28077274/the-role-and-regulation-of-the-peroxisome-proliferator-activated-receptor-alpha-in-human-liver
#5
REVIEW
Sander Kersten, Rinke Stienstra
The peroxisome proliferator-activated receptor α (PPARα) is a ligand-activated transcription factor that is abundantly expressed in liver. PPARα is activated by fatty acids and various other lipid species, as well as by a class of chemicals referred to as peroxisome proliferators. Studies in mice have shown that PPARα serves as the master regulator of hepatic lipid metabolism during fasting. In addition, PPARα suppresses inflammation and the acute phase response. Comparatively little is known about PPARα in human liver...
January 7, 2017: Biochimie
https://www.readbyqxmd.com/read/28077158/ccl2-driven-inflammation-increases-mammary-gland-stromal-density-and-cancer-susceptibility-in-a-transgenic-mouse-model
#6
Xuan Sun, Danielle J Glynn, Leigh J Hodson, Cecilia Huo, Kara Britt, Erik W Thompson, Lucy Woolford, Andreas Evdokiou, Jeffrey W Pollard, Sarah A Robertson, Wendy V Ingman
BACKGROUND: Macrophages play diverse roles in mammary gland development and breast cancer. CC-chemokine ligand 2 (CCL2) is an inflammatory cytokine that recruits macrophages to sites of injury. Although CCL2 has been detected in human and mouse mammary epithelium, its role in regulating mammary gland development and cancer risk has not been explored. METHODS: Transgenic mice were generated wherein CCL2 is driven by the mammary epithelial cell-specific mouse mammary tumour virus 206 (MMTV) promoter...
January 11, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28056402/engineering-hepatitis-b-virus-core-particles-for-targeting-her2-receptors-in%C3%A2-vitro-and-in%C3%A2-vivo
#7
Izzat Fahimuddin Bin Mohamed Suffian, Julie Tzu-Wen Wang, Naomi O Hodgins, Rebecca Klippstein, Mitla Garcia-Maya, Paul Brown, Yuya Nishimura, Hamed Heidari, Sara Bals, Jane K Sosabowski, Chiaki Ogino, Akihiko Kondo, Khuloud T Al-Jamal
Hepatitis B Virus core (HBc) particles have been studied for their potential as drug delivery vehicles for cancer therapy. HBc particles are hollow nano-particles of 30-34 nm diameter and 7 nm thick envelopes, consisting of 180-240 units of 21 kDa core monomers. They have the capacity to assemble/dis-assemble in a controlled manner allowing encapsulation of various drugs and other biomolecules. Moreover, other functional motifs, i.e. receptors, receptor binding sequences, peptides and proteins can be expressed...
December 14, 2016: Biomaterials
https://www.readbyqxmd.com/read/28045107/collateral-damage-insights-into-bacterial-mechanisms-that-predispose-host-cells-to-cancer
#8
Aurélie Gagnaire, Bertrand Nadel, Didier Raoult, Jacques Neefjes, Jean-Pierre Gorvel
Infections are estimated to contribute to 20% of all human tumours. Viruses are known to induce cell transformation, but evidence has also linked bacteria, such as Helicobacter pylori and Salmonella enterica subsp. enterica serovar Typhi, to different cancer types. In addition, Chlamydia trachomatis, Fusobacterium nucleatum and Bacteroides fragilis are associated with the development of cancer, although a causal relationship has not yet been established. Bacterial effectors such as colibactin and the virulence factor cytotoxin-associated gene A (CagA) can promote cancer directly by influencing host cell signalling cascades, such as the WNT and ataxia-telangiectasia mutated (ATM) pathways, or indirectly by inducing tissue damage and inflammatory responses...
January 3, 2017: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/28031835/pulmonary-lymphoepithelioma-like-carcinoma-with-echinoderm-microtubule-associated-protein-like-4-anaplastic-lymphoma-kinase-eml4-alk-fusion-gene
#9
Naoko Ose, Teruka Kawai, Daisuke Ishida, Yuko Kobori, Yukiyasu Takeuchi, Hidetoshi Senba
A pulmonary lymphoepithelioma-like carcinoma (PLELC) is similar to a lymphoepithelioma, a subtype of nasopharyngeal carcinoma and commonly associated with Epstein-Barr virus infection which is a rare tumour and classified in the group of "other and unclassified carcinoma" in the latest 2015 World Health Organization (WHO) classification. Some reports of lymphoepithelioma-like carcinoma (LELC) have noted an epidermal growth factor receptor (EGFR) mutation, whereas none have noted a mutation of the echinoderm microtubule-associated protein-like 4-anaplastic lymphoma kinase (EML4-ALK) fusion gene...
November 2016: Respirology Case Reports
https://www.readbyqxmd.com/read/28025425/virus-and-host-events-in-squamous-carcinogenesis
#10
Nicholas Coleman
Our group investigates early and late stages in the development of squamous cell carcinomas (SCCs), in order to identify new approaches to diagnosis and therapy. The principal themes are:1. Transcriptional deregulation of high-risk human papillomavirus (HRHPV)We study mechanisms of HRHPV transcriptional deregulation and competitive cell selection during SCC progression, focussing on the causes and effects of integration of HPV16 into the host genome. We showed that HPV16 integration does not necessarily lead to a competitive growth advantage or increased levels of virus oncogenes...
2016: Keio Journal of Medicine
https://www.readbyqxmd.com/read/28024232/genetically-engineered-and-self-assembled-oncolytic-protein-nanoparticles-for-targeted-cancer-therapy
#11
Joong-Jae Lee, Jung Ae Kang, Yiseul Ryu, Sang-Soo Han, You Ree Nam, Jong Kook Rho, Dae Seong Choi, Sun-Woong Kang, Dong-Eun Lee, Hak-Sung Kim
The integration of a targeted delivery with a tumour-selective agent has been considered an ideal platform for achieving high therapeutic efficacy and negligible side effects in cancer therapy. Here, we present engineered protein nanoparticles comprising a tumour-selective oncolytic protein and a targeting moiety as a new format for the targeted cancer therapy. Apoptin from chicken anaemia virus (CAV) was used as a tumour-selective apoptotic protein. An EGFR-specific repebody, which is composed of LRR (Leucine-rich repeat) modules, was employed to play a dual role as a tumour-targeting moiety and a fusion partner for producing apoptin nanoparticles in E...
December 19, 2016: Biomaterials
https://www.readbyqxmd.com/read/27994225/comparison-of-circulating-tumour-cells-and-circulating-cell-free-epstein-barr-virus-dna-in-patients-with-nasopharyngeal-carcinoma-undergoing-radiotherapy
#12
Jess Honganh Vo, Wen Long Nei, Min Hu, Wai Min Phyo, Fuqiang Wang, Kam Weng Fong, Terence Tan, Yoke Lim Soong, Shie Lee Cheah, Kiattisa Sommat, Huiyu Low, Belinda Ling, Johnson Ng, Wan Loo Tan, Kian Sing Chan, Lynette Oon, Jackie Y Ying, Min-Han Tan
Quantification of Epstein-Barr virus (EBV) cell-free DNA (cfDNA) is commonly used in clinical settings as a circulating biomarker in nasopharyngeal carcinoma (NPC), but there has been no comparison with circulating tumour cells (CTCs). Our study aims to compare the performance of CTC enumeration against EBV cfDNA quantitation through digital PCR (dPCR) and quantitative PCR. 74 plasma samples from 46 NPC patients at baseline and one month after radiotherapy with or without concurrent chemotherapy were analysed...
December 2016: Scientific Reports
https://www.readbyqxmd.com/read/27974094/long-term-safety-of-anti-tnf-agents-on-the-liver-of-patients-with-spondyloarthritis-and-potential-occult-hepatitis-b-viral-infection-an-observational-multicentre-study
#13
Chiara Giannitti, Giuseppe Lopalco, Antonio Vitale, Donato Rigante, Maria Grazia Anelli, Marta Fabbroni, Stefania Manganelli, Mauro Galeazzi, Bruno Frediani, Michele Barone, Giovanni Lapadula, Florenzo Iannone, Luca Cantarini
OBJECTIVES: The aim of the study was to retrospectively evaluate the long-term safety profile of anti-tumour necrosis factor (TNF)-α agents on the liver of patients with spondyloarthritis (SpA) and a previously resolved hepatitis B virus (HBV) infection. METHODS: Medical records from 992 consecutive outpatients receiving anti-TNF-α therapy between 2007 and 2015 were retrospectively reviewed. HBV infection was assessed evaluating HBV surface antigen (HBsAg), antibodies to HBsAg (anti-HBs), antibodies to hepatitis B core (anti-HBc), and HBV-DNA levels...
December 9, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27966453/oncolytic-virus-synergizes-with-smac-mimetic-compounds-to-induce-rhabdomyosarcoma-cell-death-in-a-syngeneic-murine-model
#14
Christine C Dobson, Thet Naing, Shawn T Beug, Mame D Faye, Janelle Chabot, Martin St-Jean, Danielle E Walker, Eric C LaCasse, David F Stojdl, Robert G Korneluk, Martin Holcik
Rhabdomyosarcoma (RMS), a neoplasm characterized by undifferentiated myoblasts, is the most common soft tissue tumour in children. Therapeutic resistance is common in RMS and is often caused by acquired defects in the cellular apoptotic program. Smac mimetic compounds (SMCs) are a novel class of inhibitor of apoptosis (IAP) antagonists that are currently under clinical development as cancer therapeutics. We previously reported that cIAP1 is overexpressed in human primary RMS tumours and in patient-derived RMS cell lines where it drives resistance to apoptosis...
December 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926826/potential-of-a-bpv1-l1-vlp-vaccine-to-prevent-bpv1-or-bpv2-induced-pseudo-sarcoid-formation-and-safety-and-immunogenicity-of-ecpv2-l1-vlps-in-the-horse
#15
Edmund K Hainisch, Hans Abel-Reichwald, Saeed Shafti-Keramat, Barbara Pratscher, Annunziata Corteggio, Giuseppe Borzacchiello, Maria Wetzig, Christoph Jindra, Alexander Tichy, Reinhard Kirnbauer, Sabine Brandt
We have previously shown that immunization of horses with BPV1 L1 virus-like particles (VLP) is safe and highly immunogenic, and that bovine papillomavirus types 1 and 2 (BPV1, BPV2) are closely related serotypes. Here we evaluated the protective potential of a BPV1 L1 VLP vaccine against experimental BPV1 and BPV2 challenge, and studied the safety and immunogenicity of a bivalent EcPV2/BPV1 L1 VLP vaccine. Fourteen healthy horses were immunized with BPV1 L1 VLPs (100 µg/injection) plus adjuvant on days 0 and 28, whilst seven remained unvaccinated...
December 7, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27925189/hbx-drives-alpha-fetoprotein-expression-to-promote-initiation-of-liver-cancer-stem-cells-through-activating-pi3k-akt-signal-pathway
#16
Mingyue Zhu, Wei Li, Yan Lu, Xu Dong, Bo Lin, Yi Chen, Xueer Zhang, Junli Guo, Mengsen Li
Hepatitis B virus (HBV)-X protein (HBx) plays critical role in inducing the malignant transformation of liver cells. Alpha fetoprotein (AFP) expression is closely related to hepatocarcinogenesis. We report that Oct4, Klf4, Sox2 and c-myc expression positively associated with AFP(+)/HBV(+) hepatocellular carcinoma(HCC) tissues, and the expression of the stemness markers CD44, CD133 and EpCAM was significantly higher in AFP(+)/HBV(+) HCC tissues compared to normal liver tissues or AFP(-)/HBV(-) HCC tissues. AFP expression turned on prior to expression of Oct4, Klf4, Sox2 and c-myc, and the stemness markers CD44, CD133 and EpCAM in the normal human liver L-02 cell line or CHL cell lines upon transfection with MCV-HBx vectors...
December 7, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27923035/biomarkers-in-anal-cancer-from-biological-understanding-to-stratified-treatment
#17
Christopher M Jones, Vicky Goh, David Sebag-Montefiore, Duncan C Gilbert
Squamous cell carcinomas of the anus and anal canal represent a model of a cancer and perhaps the first where level 1 evidence supported primary chemoradiotherapy (CRT) in treating locoregional disease with curative intent. The majority of tumours are associated with infection with oncogenic subtypes of human papilloma virus and this plays a significant role in their sensitivity to treatment. However, not all tumours are cured with CRT and there remain opportunities to improve outcomes in terms of oncological control and also reducing late toxicities...
January 17, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/27917563/outcome-of-hepatitis-b-and-c-virus-associated-hepatocellular-carcinoma-occurring-after-renal-transplantation
#18
N Kanaan, C Raggi, E Goffin, M De Meyer, M Mourad, M Jadoul, C Beguin, B Kabamba, I Borbath, Y Pirson, Z Hassoun
Kidney transplant recipients (KTR) are subjected to immunosuppressive therapy that can enhance hepatitis B and C virus replication, leading to cirrhosis and hepatocellular carcinoma (HCC). The aim of this study was to assess the prevalence and outcome of HCC in KTR. Case-control study. Patients with chronic HBV and/or HCV infection who underwent kidney transplantation between 1976 and 2011 and subsequently developed HCC were compared to a control group of patients with chronic HBV and/or HCV infection, matched for gender and age at HCC diagnosis, who did not receive kidney transplantation...
December 5, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27911942/persistent-morbillivirus-infection-leads-to-altered-cortactin-distribution-in-histiocytic-sarcoma-cells-with-decreased-cellular-migration-capacity
#19
Vanessa Maria Pfankuche, Mohamed Sayed-Ahmed, Vanessa Bono Contioso, Ingo Spitzbarth, Karl Rohn, Reiner Ulrich, Ulrich Deschl, Arno Kalkuhl, Wolfgang Baumgärtner, Christina Puff
Histiocytic sarcomas represent rare but fatal neoplasms in humans. Based on the absence of a commercially available human histiocytic sarcoma cell line the frequently affected dog displays a suitable translational model. Canine distemper virus, closely related to measles virus, is a highly promising candidate for oncolytic virotherapy. Therapeutic failures in patients are mostly associated with tumour invasion and metastasis often induced by misdirected cytoskeletal protein activities. Thus, the impact of persistent canine distemper virus infection on the cytoskeletal protein cortactin, which is frequently overexpressed in human cancers with poor prognosis, was investigated in vitro in a canine histiocytic sarcoma cell line (DH82)...
2016: PloS One
https://www.readbyqxmd.com/read/27910803/the-prognostic-and-predictive-value-of-tmprss2-erg-gene-fusion-and-erg-protein-expression-in-prostate-cancer-biopsies
#20
Kasper Drimer Berg
BACKGROUND: The clinical course of prostate carcinoma (PCa) is very heterogeneous. Consequently, a personalised approach for risk stratification and treatment planning is important. Recently, it has become evident that PCa, also at the genomic level, is heterogeneous. An early and common alteration is the gene fusion between the transmembrane protease serine 2 (TMPRSS2) gene and the v-ets avian erythroblastosis virus E26 oncogene homolog (ERG) gene resulting in expression of the oncoprotein ERG...
December 2016: Danish Medical Journal
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