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https://www.readbyqxmd.com/read/29334302/mirnas-as-potential-regulators-of-mtor-pathway-in-renal-cell-carcinoma
#1
Inês Nogueira, Francisca Dias, Ana Luísa Teixeira, Rui Medeiros
Renal cell carcinoma (RCC) is the most commonly occurring solid cancer of the adult kidney with the majority of RCC cases being detected accidentally. The most aggressive subtype is clear cell RCC (ccRCC). miRNAs, a family of small noncoding RNAs regulating gene expression have been identified as key biological modulators. The von Hippel-Lindau pathway is one of the signaling pathways involved in the pathophysiology of ccRCC. Another oncogenic mechanism involves the activation of PI3K/AKT/mTOR signaling and serves as a central regulator of cell metabolism, proliferation and survival...
January 15, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29330747/recent-advances-in-screening-for-barrett-s-esophagus
#2
REVIEW
Sarmed S Sami, Prasad G Iyer
OPINION STATEMENT: PURPOSE OF REVIEW: There is a pressing need for effective strategies to halt the increase in both the incidence and mortality of esophageal adenocarcinoma (EAC). Screening for Barrett's esophagus, which is the only known precursor of EAC, remains a ripe area for research, particularly with regard to identifying the target population, screening tools, and management of screen-detected populations. This review aims to explore in depth the rationale for screening for Barrett's esophagus, recent biotechnological advances which may have the potential of making screening feasible, and also highlight the challenges which will have to be overcome in order make screening for BE a realistic prospect...
January 13, 2018: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/29328867/glioma-stem-cell-niches-in-human-glioblastoma-are-periarteriolar
#3
Vashendriya V V Hira, Diana A Aderetti, Cornelis J F van Noorden
Survival of primary brain tumor (glioblastoma) patients is seriously hampered by glioma stem cells (GSCs) that are distinct therapy-resistant self-replicating pluripotent cancer cells. GSCs reside in GSC niches, which are specific protective microenvironments in glioblastoma tumors. We have recently found that GSC niches are hypoxic periarteriolar, whereas in most studies, GSC niches are identified as hypoxic perivascular. The aim of this review is to critically evaluate the literature on perivascular GSC niches to establish whether these are periarteriolar, pericapillary, perivenular, and/or perilymphatic...
January 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29328785/immune-responses-in-the-liver
#4
Paul Kubes, Craig Jenne
The liver is a key, frontline immune tissue. Ideally positioned to detect pathogens entering the body via the gut, the liver appears designed to detect, capture, and clear bacteria, viruses, and macromolecules. Containing the largest collection of phagocytic cells in the body, this organ is an important barrier between us and the outside world. Importantly, as portal blood also transports a large number of foreign but harmless molecules (e.g., food antigens), the liver's default immune status is anti-inflammatory or immunotolerant; however, under appropriate conditions, the liver is able to mount a rapid and robust immune response...
January 12, 2018: Annual Review of Immunology
https://www.readbyqxmd.com/read/29327784/transoral-robotic-surgery-for-oropharyngeal-carcinoma-surgical-margins-and-oncologic-outcomes
#5
Eric J Moore, Kathryn M Van Abel, Daniel L Price, Christine M Lohse, Kerry D Olsen, Ryan S Jackson, Eliot J Martin
BACKGROUND: This study presents oncologic outcomes after transoral robotic surgery (TORS) ± adjuvant therapy for oropharyngeal squamous cell carcinoma (SCC). METHODS: Three hundred fourteen patients undergoing TORS ± adjuvant therapy for oropharyngeal SCC from May 1, 2007, to May 31, 2015, are analyzed. RESULTS: Median follow-up was 3.3 years (interquartile range [IQR] 1.8-5.3 years; range 1 day to 9.3 years). Estimated locoregional recurrence-free survival, distant metastasis-free survival (DMFS), overall survival (OS), and cancer-specific survival (CSS) rates (95% confidence interval [CI] number still at risk) at 5 years after surgery were 92% (88-95; 92), 90% (86-94; 92), 86% (82-92; 98), and 94% (91-97; 98), respectively...
January 12, 2018: Head & Neck
https://www.readbyqxmd.com/read/29327716/genomic-heterogeneity-of-alk-fusion-breakpoints-in-non-small-cell-lung-cancer
#6
Jason N Rosenbaum, Ryan Bloom, Jason T Forys, Jeff Hiken, Jon R Armstrong, Julie Branson, Samantha McNulty, Priya D Velu, Kymberlie Pepin, Haley Abel, Catherine E Cottrell, John D Pfeifer, Shashikant Kulkarni, Ramaswamy Govindan, Eric Q Konnick, Christina M Lockwood, Eric J Duncavage
In lung adenocarcinoma, canonical EML4-ALK inversion results in a fusion protein with a constitutively active ALK kinase domain. Evidence of ALK rearrangement occurs in a minority (2-7%) of lung adenocarcinoma, and only ~60% of these patients will respond to targeted ALK inhibition by drugs such as crizotinib and ceritinib. Clinically, targeted anti-ALK therapy is often initiated based on evidence of an ALK genomic rearrangement detected by fluorescence in situ hybridization (FISH) of interphase cells in formalin-fixed, paraffin-embedded tissue sections...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29325268/-clinical-significance-of-targeting-drug-based-molecular-biomarkers-expression-in-ovarian-clear-cell-carcinoma
#7
M J Li, H R Li, X Cheng, R Bi, X Y Tu, F Liu, L H Chen
Objective: To assess the expression level of targeting drug-based molecular biomarkers in ovarian clear cell carcinoma (OCCC) tissues and its clinical significance. Methods: A total of 63 OCCC patients included 40 primary OCCC and 23 recurrent OCCC for secondary cytoreductive surgery (SCS), who had received primary surgeries at Fudan University Shanghai Cancer Center between January, 2008 and December, 2015 were enrolled, and immunohistochemistry SP method was used to test human epidermal growth factor receptor (EGFR), human epidermal growth factor receptor-2 (HER2), aurora kinase A (AURKA), breast cancer susceptibility gene 1 (BRCA1), BRCA2 and programmed death-ligand 1 (PD-L1)protein expression in paraffin-embedded tissues...
December 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/29324830/nano-pulse-stimulation-induces-immunogenic-cell-death-in-human-papillomavirus-transformed-tumors-and-initiates-an-adaptive-immune-response
#8
Joseph G Skeate, Diane M Da Silva, Elena Chavez-Juan, Snjezana Anand, Richard Nuccitelli, W Martin Kast
Nano-Pulse Stimulation (NPS) is a non-thermal pulsed electric field modality that has been shown to have cancer therapeutic effects. Here we applied NPS treatment to the human papillomavirus type 16 (HPV 16)-transformed C3.43 mouse tumor cell model and showed that it is effective at eliminating primary tumors through the induction of immunogenic cell death while subsequently increasing the number of tumor-infiltrating lymphocytes within the tumor microenvironment. In vitro NPS treatment of C3.43 cells resulted in a doubling of activated caspase 3/7 along with the translocation of phosphatidylserine (PS) to the outer leaflet of the plasma membrane, indicating programmed cell death activity...
2018: PloS One
https://www.readbyqxmd.com/read/29323103/oridonin-exerts-anticancer-effect-on-osteosarcoma-by-activating-ppar-%C3%AE-and-inhibiting-nrf2-pathway
#9
Ying Lu, Yang Sun, Jianwei Zhu, Lisha Yu, Xiubo Jiang, Jie Zhang, Xiaochen Dong, Bo Ma, Qi Zhang
Osteosarcoma is the most common high-grade human primary malignant bone sarcoma with lower survival in the past decades. Oridonin, a bioactive diterpenoid isolated from Rabdosia rubescens, has been proved to possess potent anti-cancer effects. However, its potential mechanism still remains not fully clear nowadays. In this study, we investigated the anticancer effect of oridonin on human osteosarcoma and illuminated the underlying mechanisms. In vitro, oridonin inhibited the cell viability of various osteosarcoma cells...
January 11, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29323067/modified-cajal-s-trichrome-stain-as-a-diagnostic-aid-in-the-study-of-epithelial-pathology
#10
Karpagaselvi Sanjai, Anjum Baker, Lokesh Papiah Reddy, Bhavna Pandey
BACKGROUND: Diagnosis of initial epithelial pathology maybe difficult in Squamous Cell Carcinoma (SCC), Carcinoma In Situ and other atypical epithelial malignancies, under routine Haematoxylin and Eosin (H and E) stain. The detection of minor basement membrane alterations in doubtful cases is both time consuming and confusing. AIMS: To evaluate efficacy of Modified Cajal's Trichrome Stain (CTS) in relation to Haematoxylin and Eosin for study of epithelial dysplasia, carcinoma in situ, micro invasive SCC, frank SCC, and SCC in lymph nodes...
October 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29321661/differential-recruitment-of-cd44-isoforms-by-erbb-ligands-reveals-an-involvement-of-cd44-in-breast-cancer
#11
Iris Morath, Christian Jung, Romain Lévêque, Chen Linfeng, Robert-Alain Toillon, Arne Warth, Véronique Orian-Rousseau
Members of the CD44 family of transmembrane glycoproteins control cell signaling pathways from numerous cell surface receptors, including receptor tyrosine kinases (RTKs). The decisive factor (ligand, RTKs or both) that controls the recruitment of specific CD44 isoforms is still unknown. We investigated this question by using the EGFR signaling pathway, in which one receptor can be activated by a broad range of ligands. By means of siRNA-mediated downregulation of CD44 expression and blocking experiments, we identified CD44v6 as a co-receptor for EGF- and ER-induced ErbB1 activation and for NRG1-induced ErbB3 and ErbB4 activation...
January 11, 2018: Oncogene
https://www.readbyqxmd.com/read/29320557/high-ahr-expression-in-breast-tumors-correlates-with-expression-of-genes-from-several-signaling-pathways-namely-inflammation-and-endogenous-tryptophan-metabolism
#12
Sophie Vacher, Patrice Castagnet, Walid Chemlali, François Lallemand, Didier Meseure, Marc Pocard, Ivan Bieche, Martine Perrot-Applanat
Increasing epidemiological and animal experimental data provide substantial support for the role of aryl hydrocarbon receptor (AhR) in mammary tumorigenesis. The effects of AhR have been clearly demonstrated in rodent models of breast carcinogenesis and in several established human breast cancer cell lines following exposure to AhR ligands or AhR overexpression. However, relatively little is known about the role of AhR in human breast cancers. AhR has always been considered to be a regulator of toxic and carcinogenic responses to environmental contaminants such as TCDD (dioxin) and benzo[a]pyrene (BaP)...
2018: PloS One
https://www.readbyqxmd.com/read/29318554/evaluation-of-tumor-vasculature-using-a-syngeneic-tumor-model-in-wild-type-and-genetically-modified-mice
#13
Francisco Javier Rodríguez-Baena, Silvia Redondo-García, María Del Carmen Plaza-Calonge, Rubén Fernández-Rodríguez, Juan Carlos Rodríguez-Manzaneque
The relevance of tumor vasculature has been extensively recognized, and it is still the focus of numerous lines of research for basic, translational, and clinical scientists. Indeed, the knowledge of some of its regulatory mechanisms has provoked the generation of ongoing cancer therapies. Within the context of the tumor microenvironment, the information that the analysis of the vasculature provides is very valuable, and it might reveal not just its quality and the response against a specific therapy but also its close relationship with neighboring stromal and tumor players...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29316955/single-molecule-techniques-to-quantify-and-genetically-characterise-persistent-hiv
#14
REVIEW
Xiao Qian Wang, Sarah Palmer
Antiretroviral therapy effectively suppresses, but does not eradicate HIV-1 infection. Persistent low-level HIV-1 can still be detected in plasma and cellular reservoirs even after years of effective therapy, and cessation of current treatments invariably results in resumption of viral replication. Efforts to eradicate persistent HIV-1 require a comprehensive examination of the quantity and genetic composition of HIV-1 within the plasma and infected cells located in the peripheral blood and tissues throughout the body...
January 9, 2018: Retrovirology
https://www.readbyqxmd.com/read/29316254/resveratrol-induced-apoptosis-in-human-gastric-carcinoma-sgc-7901-cells-via-activation-of-mitochondrial-pathway
#15
Yining Yang, Xinen Huang, Senqing Chen, Guojian Ma, Ming Zhu, Feng Yan, Jun Yu
BACKGROUND: Resveratrol is a natural polyphenolic compound and its anticancer effect has been receiving considerable attention. Previous studies showed that resveratrol could inhibited the growth of human gastric carcinoma cells and apoptosis induction was an important mechanism. However, whether mitochondrial pathway was involved in resveratrol-induced apoptosis in human gastric cancer was not very clear. METHODS: The cells were examined by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay, Annexin V/PI staining assay, mitochondrial membrane depolarization, cell morphological assessment, cytochrome c release assay, and Western blotting assay...
January 8, 2018: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29316206/inhibition-of-vegf-dependent-angiogenesis-and-tumor-angiogenesis-by-an-optimized-antibody-targeting-clec14a
#16
Taek-Keun Kim, Chang Sik Park, Jihye Jang, Mi Ra Kim, Hee-Jun Na, Kangseung Lee, Hyun Jung Kim, Kyun Heo, Byong Chul Yoo, Young-Myeong Kim, Je-Wook Lee, Su Jin Kim, Eun Sung Kim, Dae Young Kim, Kiweon Cha, Tae Gyu Lee, Sukmook Lee
The C-type lectin-like domain of CLEC14a (CLEC14a-CTLD) is a key domain that mediates endothelial cell-cell contacts in angiogenesis. However, the role of CLEC14a-CTLD in pathological angiogenesis has not yet been clearly elucidated. In this study, through complementarity-determining region (CDR) grafting, consecutive deglycosylation, and functional isolation, we generated a novel anti-angiogenic human monoclonal antibody that specifically targets CLEC14a-CTLD and that shows improved stability and homogeneity relative to the parental antibody...
January 9, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29315556/kras-promotes-tumor-metastasis-and-chemoresistance-by-repressing-rkip-via-the-mapk-erk-pathway-in-pancreatic-cancer
#17
Kege Yang, Yaqing Li, Guoda Lian, Haoming Lin, Changzhen Shang, Linjuan Zeng, Shaojie Chen, Jiajia Li, Chumei Huang, Kaihong Huang, Yinting Chen
Oncogenic KRAS plays a crucial role in pancreatic ductal adenocarcinoma (PDAC) development and progression. However, the mechanism has not been clearly elucidated. RKIP is a tumor repressor, and loss of RKIP has been shown in PDAC. Here, we found that KRAS expression was inversely correlated with RKIP expression in PDAC fresh tissue regardless of the KRAS mutant status. The negative correlation between KRAS and RKIP was further confirmed in our PDAC tissue microarray. KRAS overexpression and RKIP downregulation were associated with poor clinical outcomes...
January 8, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29312699/role-of-the-stromal-cell-derived-factor-1-cxc-chemokine-receptor-4-axis-in-the-invasion-and-metastasis-of-lung-cancer-and-mechanism
#18
Yun Zeng, Xinwei Wang, Bijian Yin, Guohao Xia, Zhengjie Shen, Wenzhe Gu, Mianhua Wu
Background: Lung cancer is the most common tumor, and has the highest incidence and mortality rates among all malignant tumors. Since stromal cell derived factor-1 (SDF-1) and CXC chemokine receptor 4 (CXCR4) are specific to binding sites, they are more important than other members of the families for tumor invasion and metastasis. We herein aimed to investigate the role of the axis of chemokine SDF-1 and its receptor CXCR4 in the invasion and metastasis of lung cancer. Methods: Sixty clinical non-small cell lung cancer (NSCLC) tissue samples were collected...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29312618/estrogen-receptor-signaling-mediates-leptin-induced-growth-of-breast-cancer-cells-via-autophagy-induction
#19
Pawan Kumar Raut, Dong Young Choi, Sang Hyun Kim, Jin Tae Hong, Taeg Kyu Kwon, Jee Heon Jeong, Pil-Hoon Park
Leptin, a hormone derived from adipose tissue, promotes growth of cancer cells via multiple mechanisms. Estrogen receptor signaling is also known to stimulate the growth of breast cancer cells. However, the involvement of estrogen receptor signaling in the oncogenic actions of leptin and its underlying mechanisms are not clearly understood. Herein, we investigated mechanisms for estrogen receptor signaling-mediated growth of breast cancer cells, particularly focusing on autophagy, which plays a crucial role in leptin-induced tumor growth...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29311642/hsp90-inhibition-alters-the-chemotherapy-driven-rearrangement-of-the-oncogenic-secretome
#20
Simona di Martino, Carla Azzurra Amoreo, Barbara Nuvoli, Rossella Galati, Sabrina Strano, Francesco Facciolo, Gabriele Alessandrini, Harvey I Pass, Gennaro Ciliberto, Giovanni Blandino, Ruggero De Maria, Mario Cioce
Adaptive resistance to therapy is a hallmark of cancer progression. To date, it is not entirely clear how microenvironmental stimuli would mediate emergence of therapy-resistant cell subpopulations, although a rearrangement of the cancer cell secretome following therapy-induced stress can be pivotal for such a process. Here, by using the highly chemoresistant malignant pleural mesothelioma (MPM) as an experimental model, we unveiled a key contribution of the chaperone HSP90 at assisting a chemotherapy-instigated Senescence-Associated-Secretory-Phenotype (SASP)...
January 9, 2018: Oncogene
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