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Carcinogenesis

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https://www.readbyqxmd.com/read/28645180/alcohol-metabolism-and-oesophageal-cancer-a-systematic-review-of-the-evidence
#1
Marco Matejcic, M J Gunter, Pietro Ferrari
Alcohol is a major risk factor for oesophageal squamous cell carcinoma (OSCC), the most prevalent histological subtype of oesophageal cancer (OC) worldwide. The metabolism of alcohol is regulated by specific enzymes whose activity and expression is influenced by genetic polymorphisms. We conducted a systematic review of current epidemiological evidence of the relationship between alcohol intake and OC risk, including the role of tobacco smoking and functional polymorphisms of dehydrogenases (ADHs) and aldehyde dehydrogenases (ALDHs)...
June 22, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28633434/psip1-p75-promotes-tumorigenicity-in-breast-cancer-cells-by-promoting-the-transcription-of-cell-cycle-genes
#2
Deepak K Singh, Omid Gholamalamdari, Mahdieh Jadaliha, Xiao Ling Li, Yo-Chuen Lin, Yang Zhang, Shuomeng Guang, Seyedsasan Hashemikhabir, Saumya Tiwari, Yuelin J Zhu, Abid Khan, Anu Thomas, Arindam Chakraborty, Virgilia Macias, Andre K Balla, Rohit Bhargava, Sarath Chandra Janga, Jian Ma, Supriya G Prasanth, Ashish Lal, Kannanganattu V Prasanth
Breast cancer (BC) is a highly heterogeneous disease, both at the pathological and molecular level, and several chromatin-associated proteins play crucial roles in breast cancer initiation and progression. Here, we demonstrate the role of PSIP1 (PC4 and SF2 interacting protein)/p75 (LEDGF) in breast cancer progression. PSIP1/p75, previously identified as a chromatin-adaptor protein, is found to be upregulated in basal-like/triple negative breast cancer (TNBC) patient samples and cell lines. Immunohistochemistry in tissue arrays showed elevated levels of PSIP1 in metastatic invasive ductal carcinoma...
June 17, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28637319/matrix-metalloproteinases-their-functional-role-in-lung-cancer
#3
Neha Merchant, Ganji Purnachandra Nagaraju, Balney Rajitha, Saipriya Lammata, Kishore Kumar Jella, Zachary S Buchwald, Sajani S Lakka, Arif N Ali
Lung malignancy is the foremost cause of cancer-related deaths globally and is frequently related to long-term tobacco smoking. Recent studies reveal that the expression of matrix metalloproteinases (MMPs) is extremely high in lung tumors compared to non-malignant lung tissue. MMPs are zinc-dependent proteases and are involved in the degradation of extracellular matrix (ECM). Several investigations have shown that MMPs manipulate the activity of non-ECM molecules, including cytokines, growth factors and receptors which control the tumor microenvironment...
June 16, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28637314/dna-methylation-signatures-and-coagulation-factors-in-the-peripheral-blood-leucocytes-of-epithelial-ovarian-cancer
#4
Lian Li, Hong Zheng, Yubei Huang, Caiyun Huang, Shuang Zhang, Jing Tian, Pei Li, Anil K Sood, Wei Zhang, Kexin Chen
Solid tumors are increasingly recognized as a systemic disease that is manifested by changes in DNA, RNA, proteins, and metabolites in the blood. Whereas many studies have reported gene mutation events in the circulation, few studies have focused on epigenetic DNA methylation markers. To identify DNA methylation biomarkers in peripheral blood for ovarian cancer, we performed a two-stage epigenome-wide association study. In the discovery stage, we measured genome wide DNA methylation for 485,000 CpG sites in peripheral blood in 24 epithelial ovarian cancer cases and 24 age-matched healthy controls...
June 16, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28605409/hair-product-use-and-breast-cancer-risk-among-african-american-and-white-women
#5
Adana A M Llanos, Anna Rabkin, Elisa V Bandera, Gary Zirpoli, Brian D Gonzalez, Cathleen Y Xing, Bo Qin, Yong Lin, Chi-Chen Hong, Kitaw Demissie, Christine B Ambrosone
Exposures to carcinogens in hair products have been explored as breast cancer risk factors, yielding equivocal findings. We examined hair product use (hair dyes, chemical relaxers and cholesterol or placenta-containing conditioners) among African American (AA) and White women, and explored associations with breast cancer. Multivariable-adjusted models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) to describe the associations of interest among 2,280 cases (1,508 AA and 772 White) and 2,005 controls (1,290 AA and 715 White)...
June 9, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28595267/cholesterol-uptake-and-regulation-in-high-grade-and-lethal-prostate-cancers
#6
Konrad H Stopsack, Travis A Gerke, Ove Andrén, Swen-Olof Andersson, Edward L Giovannucci, Lorelei A Mucci, Jennifer R Rider
Lethal prostate cancers have higher expression of squalene monooxygenase (SQLE), the second rate-limiting enzyme of cholesterol synthesis. Preclinical studies suggested that aberrant cholesterol regulators, receptors, and transporters contribute to cholesterol accumulation uniformly. We assessed their association with features of aggressive cancers. In the prospective prostate cancer cohorts within the Health Professional Follow-up Study, the Physicians' Health Study, and the Swedish Watchful Waiting Study, tumor mRNA expression profiling was performed...
June 8, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28582508/association-of-breast-cancer-risk-and-the-mtor-pathway-in-women-of-african-ancestry-in-the-root-consortium
#7
Shengfeng Wang, Dezheng Huo, Temidayo O Ogundiran, Oladosu Ojengbede, Wei Zheng, Katherine L Nathanson, Barbara Nemesure, Stefan Ambs, Olufunmilayo I Olopade, Yonglan Zheng
Functional studies have elucidated the role of the mammalian target of rapamycin (mTOR) pathway in breast carcinogenesis, but to date, there is a paucity of data on its contribution to breast cancer risk in women of African ancestry. We examined 47,628 SNPs in 61 mTOR pathway genes in the genome wide association study of breast cancer in the African Diaspora study (The Root consortium), which included 3,686 participants (1,657 cases). Pathway- and gene-level analyses were conducted using the adaptive rank truncated product (ARTP) test for 10,994 SNPs that were not highly correlated (r2 < 0...
June 5, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28582492/genome-scale-identification-of-microrna-related-snps-associated-with-risk-of-head-and-neck-squamous-cell-carcinoma
#8
Owen M Wilkins, Alexander J Titus, Jiang Gui, Melissa Eliot, Rondi A Butler, Erich M Sturgis, Guojun Li, Karl T Kelsey, Brock C Christensen
Polymorphisms in microRNAs and their target sites can disrupt microRNA-dependent gene regulation, and have been associated with cancer susceptibility. However, genome-scale analyses of microRNA-related genetic variation in cancer are lacking. We tested the associations of ~40,000 common (MAF≥5%), microRNA-related single nucleotide polymorphisms (miR-SNPs), with risk of head and neck squamous cell carcinoma (HNSCC) in a discovery population, and validated selected loci in an independent population among a total of 2,198 cases and 2,180 controls...
June 5, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28582482/fusobacterium-and-colorectal-cancer-causal-factor-or-passenger-results-from-a-large-colorectal-cancer-screening-study
#9
Efrat L Amitay, Simone Werner, Marius Vital, Dietmar H Pieper, Daniela Höfler, Indra-Jasmin Gierse, Julia Butt, Yesilda Balavarca, Katarina Cuk, Hermann Brenner
Colorectal cancer is a leading cause of morbidity and mortality worldwide in both men and women. The gut microbiome is increasingly recognized as having an important role in human health and disease. Fusobacterium has been identified in former studies as a leading gut bacterium associated with colorectal cancer but it is still not clear if it plays an oncogenic role. In the current study, fecal samples were collected prior to bowel preparation from participants of screening colonoscopy in the German BliTz study...
June 5, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28575150/melatonin-as-a-promising-agent-to-treat-ovarian-cancer-molecular-mechanisms
#10
Luiz Gustavo de Almeida Chuffa, Russel J Reiter, Luiz Antonio Lupi Júnior
Ovarian cancer (OC) has the highest mortality rate of all gynecological cancers, and most patients develop chemoresistance after first-line treatments. Despite recent advances, the 5-year relative survival is approximately 45% for all OC subtypes, and invasive epithelial OC has only a 17% survival rate when diagnosed at a late stage. Identification of new efficacious molecules or biomarkers represents important opportunities in the treatment of OC. The pharmacological and physiological properties of melatonin indicate this agent could be useful against OC progression and metastasis...
June 2, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28575311/pre-diagnostic-copper-and-zinc-biomarkers-and-colorectal-cancer-risk-in-the-european-prospective-investigation-into-cancer-and-nutrition-cohort
#11
Magdalena Stepien, Mazda Jenab, Heinz Freisling, Niels-Peter Becker, Magdalena Czuban, Anne Tjønneland, Anja Olsen, Kim Overvad, Marie-Christine Boutron-Ruault, Francesca Romana Mancini, Isabelle Savoye, Verena Katzke, Tilman Kühn, Heiner Boeing, Khalid Iqbal, Antonia Trichopoulou, Christina Bamia, Philippos Orfanos, Domenico Palli, Sabina Sieri, Rosario Tumino, Alessio Naccarati, Salvatore Panico, H B As Bueno-de-Mesquita, Petra H Peeters, Elisabete Weiderpass, Susana Merino, Paula Jakszyn, Maria-Jose Sanchez, Miren Dorronsoro, José María Huerta, Aurelio Barricarte, Stina Boden, Behany van Guelpen, Nick Wareham, Kay-Tee Khaw, Kathryn E Bradbury, Amanda J Cross, Lutz Schomburg, David J Hughes
Adequate intake of copper and zinc, two essential micronutrients, are important for antioxidant functions. Their imbalance may have implications for development of diseases like colorectal cancer (CRC), where oxidative stress is thought to be etiologically involved. As evidence from prospective epidemiologic studies is lacking, we conducted a case-control study nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort to investigate the association between circulating levels of copper and zinc, and their calculated ratio, with risk of CRC development...
June 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28575166/lta4h-regulates-cell-cycle-and-skin-carcinogenesis
#12
Naomi Oi, Hiroyuki Yamamoto, Alyssa Langfald, Ruihua Bai, Mee-Hyun Lee, Ann M Bode, Zigang Dong
Leukotriene A4 hydrolase (LTA4H), a bifunctional zinc metallo-enzyme, is reportedly overexpressed in several human cancers. Our group has focused on LTA4H as a potential target for cancer prevention and/or therapy. In the present study, we report that LTA4H is a key regulator of cell cycle at the G0/G1 phase acting by negatively regulating p27 expression in skin cancer. We found that LTA4H is overexpressed in human skin cancer tissue. Knocking out LTA4H significantly reduced skin cancer development in the 7,12-dimethylbenz(a)anthracene (DMBA)-initiated/12-O-tetradecanoylphorbol-13-acetate (TPA)-promoted two-stage skin cancer mouse model...
May 31, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28535209/aromatic-dna-adducts-and-breast-cancer-risk-a-case-cohort-study-within-the-epic-spain
#13
Antonio Agudo, Marco Peluso, Armelle Munnia, Leila Luján-Barroso, Aurelio Barricarte, Pilar Amiano, Carmen Navarro, María-José Sánchez, J Ramón Quirós, Eva Ardanaz, Nerea Larrañaga, María-José Tormo, María-Dolores Chirlaque, Miguel Rodríguez-Barranco, Emilio Sánchez-Cantalejo, Filippo Cellai, Catalina Bonet, Núria Sala, Carlos A González
Epidemiologic evidence linking environmental exposure to polycyclic aromatic hydrocarbons (PAH) with breast cancer is limited. Measurement of DNA adducts formed by aromatic compounds, including PAH, has been carried in breast tissue samples and white blood cells from women with breast cancer and different kinds of controls. However, these studies provide inconsistent results and bias cannot be ruled out. During the 7-year follow-up period, 305 women were diagnosed with first primary breast cancer in the EPIC-Spain cohort, and were compared with a sample of 149 women without breast cancer at recruitment, using a case-cohort approach...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28535186/fxr-gankyrin-axis-is-involved-in-development-of-pediatric-liver-cancer
#14
Leila Valanejad, Kyle Lewis, Mary Wright, Yanjun Jiang, Amber D'Souza, Rebekah Karns, Rachel Sheridan, Anita Gupta, Kevin Bove, David Witte, James Geller, Gregory Tiao, David L Nelson, Lubov Timchenko, Nikolai Timchenko
The development of hepatoblastoma (HBL) is associated with failure of hepatic stem cells (HSC) to differentiate into hepatocytes. Despite intensive investigations, mechanisms of the failure of HSC to differentiate are not known. We found that oncogene Gankyrin (Gank) is involved in the inhibition of differentiation of HSC via triggering degradation of tumor suppressor proteins (TSPs) Rb, p53, C/EBPα and HNF4α. Our data show that the activation of a repressor of Gank, farnesoid X receptor, FXR, after initiation of liver cancer by Diethylnitrosamine (DEN) prevents the development of liver cancer by inhibiting Gank and rescuing tumor suppressor proteins...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28535183/time-caloric-restriction-inhibits-the-neoplastic-transformation-of-cirrhotic-liver-in-rats-treated-with-diethylnitrosamine
#15
Christian Molina-Aguilar, María de Jesús Guerrero-Carrillo, Jesús Javier Espinosa-Aguirre, Sitlali Olguin-Reyes, Thania Castro-Belio, Olivia Vázquez-Martínez, Julieta Berenice Rivera-Zavala, Mauricio Díaz-Muñoz
Hepatocellular cancer is the most common type of primary liver cancer. Cirrhosis is the main risk factor that generates this malady. It has been proven that caloric restriction protocols and restricted feeding schedules are protective in experimental carcinogenic models. We tested the influence of a time-caloric restriction protocol (2 h of food access during the daytime for 18 weeks) in an experimental model of cirrhosis-hepatocarcinoma produced by weekly administration of diethylnitrosamine. Our results indicate that time-caloric restriction reduced hepatomegaly and prevented the increase in blood leukocytes promoted by diethylnitrosamine...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28535182/characterization-of-liver-injury-oval-cell-proliferation-and-cholangiocarcinogenesis-in-glutathione-s-transferase-a3-knockout-mice
#16
Dana R Crawford, Zoran Ilic, Ian Guest, Ginger L Milne, John D Hayes, Stewart Sell
We recently generated glutathione S-transferase (GST) A3 knockout (KO) mice as a novel model to study the risk factors for liver cancer. GSTA3 KO mice are sensitive to the acute cytotoxic and genotoxic effects of aflatoxin B1 (AFB1), confirming the crucial role of GSTA3 in resistance to AFB1. We now report histopathological changes, tumor formation, biochemical changes and gender response following AFB1 treatment as well as the contribution of oxidative stress. Using a protocol of weekly 0.5 mg AFB1/kg administration, we observed extensive oval (liver stem) cell (OC) proliferation within 1-3 weeks followed by microvesicular lipidosis, megahepatocytes, nuclear inclusions, cholangiomas, and small nodules...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28531253/gender-related-prognostic-value-and-genomic-pattern-of-intra-tumor-heterogeneity-ith-in-colorectal-cancer
#17
Jieyun Zhang, Shican Yan, Xiyu Liu, Lu Gan, Zhenhua Wu, Yiwei Gong, Mingzhu Huang, Xiaowei Zhang, Weijian Guo
Intra-tumor heterogeneity (ITH) is crucial in tumorigenesis and resistance to target therapy. Here, we used mutant-allele tumor heterogeneity (MATH) to measure ITH based on next-generation sequencing data and high MATH was proven as an independent risk prognostic factor in male CRC patients in both a training set of 284 colorectal cancer (CRC) patients with from The Cancer Genome Atlas (TCGA) and a validating set of 187 CRC patients from International Cancer Genome Consortium (ICGC). Further, the genomic pattern according to MATH demonstrated that mutation rates of TP53, IRF5 and KRAS were independently associated with MATH, and the latter two were only significant in male patients...
May 20, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28498896/inhibition-of-prdm14-expression-in-pancreatic-cancer-suppresses-cancer-stem-like-properties-and-liver-metastasis-in-mice
#18
Chiharu Moriya, Hiroaki Taniguchi, Kanjiro Miyata, Nobuhiro Nishiyama, Kazunori Kataoka, Kohzoh Imai
Pancreatic cancer is one of the most lethal types of cancer, with aggressive properties characterized by metastasis, recurrence and drug resistance. Cancer stem cells are considered to be responsible for these properties. PRDM14, a transcriptional regulator that maintains pluripotency in embryonic stem cells, is overexpressed in some cancers. Here, we assessed PRDM14 expression and the effects of PRDM14 knockdown on cancer stem-like phenotypes in pancreatic cancer. We observed that PRDM14 protein was overexpressed in pancreatic cancer tissues compared with normal pancreatic tissues...
June 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28498893/role-of-dhx33-in-c-myc-induced-cancers
#19
Jijun Fu, Yuchu Liu, Xingshun Wang, Baolei Yuan, Yandong Zhang
Oncogene c-Myc is frequently amplified and activated in human cancers. Deregulation of c-Myc protein has been shown to occur in 30% of all human cancers, especially in hematopoietic malignancies. As a transcription factor, c-Myc has been shown to regulate up to 15% of all human genome genes, controlling diverse cellular activities including cell cycle, ribosome biogenesis, protein synthesis, metabolism, apoptosis and angiogenesis. In this report, we provide evidence that the RNA helicase DHX33 is a critical downstream target of c-Myc...
June 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28472347/muc1-knockout-potentiates-murine-lung-carcinogenesis-involving-an-epiregulin-mediated-egfr-activation-feedback-loop
#20
Xiuling Xu, Wenshu Chen, Shuguang Leng, Mabel T Padilla, Bryanna Saxton, Julie Hutt, Mathewos Tessema, Kosuke Kato, Kwang Chul Kim, Steven A Belinsky, Yong Lin
Mucin 1 (MUC1) is a tumor antigen that is aberrantly overexpressed in various cancers, including lung cancer. Our previous in vitro studies showed that MUC1 facilitates carcinogen-induced EGFR activation and transformation in human lung bronchial epithelial cells (HBECs), which along with other reports suggests an oncogenic property for MUC1 in lung cancer. However, direct evidence for the role of MUC1 in lung carcinogenesis is lacking. In this study, we used the 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)-induced A/J mouse lung tumor model to investigate the effect of whole-body Muc1 knockout (KO) on carcinogen-induced lung carcinogenesis...
June 1, 2017: Carcinogenesis
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