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Genes & Cancer

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https://www.readbyqxmd.com/read/29321821/the-influence-of-glyoxalase-1-gene-polymorphism-on-its-expression-at-different-stages-of-breast-cancer-in-egyptian-women
#1
Rehab S Abdul-Maksoud, Walid Sh Elsayed, Rasha S Elsayed
Aim: To assess the association of GLO1 C332C gene polymorphism with breast cancer risk at different stages of the disease and to investigate the effect of this gene polymorphism on its mRNA expression and enzyme activity. Methods: GLO1 C332C gene polymorphism was analyzed by PCR-RFLP in 100 healthy controls and 200 patients with breast cancer (100 patients with stage I & II and 100 patients with stage III & IV). GLO1 mRNA expression was measured by real time PCR...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29321820/dysregulation-of-akt3-along-with-a-small-panel-of-mrnas-stratifies-high-grade-serous-ovarian-cancer-from-both-normal-epithelia-and-benign-tumor-tissues
#2
Pourya Naderi Yeganeh, Christine Richardson, Zahra Bahrani-Mostafavi, David L Tait, M Taghi Mostafavi
Screening methods of High-Grade Serous Ovarian Cancer (HGSOC) lack specificity and sensitivity, partly due to benign tumors producing false-positive findings. We utilized a differential expression analysis pipeline on malignant tumor (MT) and normal epithelial (NE) samples, and also filtered the results to discriminate between MT and benign tumor (BT). We report that a panel of 26 dysregulated genes stratifies MT from both BT and NE. We further validated our findings by utilizing unsupervised clustering methods on two independent datasets...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29321819/the-induction-of-endoreduplication-and-polyploidy-by-elevated-expression-of-14-3-3%C3%AE
#3
Cecil J Gomes, Sara M Centuori, Michael W Harman, Charles W Putnam, Charles W Wolgemuth, Jesse D Martinez
Several studies have demonstrated that specific 14-3-3 isoforms are frequently elevated in cancer and that these proteins play a role in human tumorigenesis. 14-3-3γ, an isoform recently demonstrated to function as an oncoprotein, is overexpressed in a variety of human cancers; however, its role in promoting tumorigenesis remains unclear. We previously reported that overexpression of 14-3-3γ caused the appearance of polyploid cells, a phenotype demonstrated to have profound tumor promoting properties. Here we examined the mechanism driving 14-3-3γ-induced polyploidization and the effect this has on genomic stability...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29321818/ews-fli-1-creates-a-cell-surface-microenvironment-conducive-to-igf-signaling-by-inducing-pappalysin-1
#4
Panneerselvam Jayabal, Peter J Houghton, Yuzuru Shiio
Ewing sarcoma is an aggressive cancer of bone and soft tissue in children with poor prognosis. It is characterized by the chromosomal translocation between EWS and an Ets family transcription factor, most commonly FLI-1. EWS-FLI-1 fusion accounts for 85% of Ewing sarcoma cases. EWS-FLI-1 regulates the expression of a number of genes important for sarcomagenesis, can transform NIH3T3 and C3H10T1/2 cells, and is necessary for proliferation and tumorigenicity of Ewing sarcoma cells, suggesting that EWS-FLI-1 is the causative oncoprotein...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29321817/enhanced-myc-association-with-the-nua4-histone-acetyltransferase-complex-mediated-by-the-adenovirus-e1a-n-terminal-domain-activates-a-subset-of-myc-target-genes-highly-expressed-in-cancer-cells
#5
Ling-Jun Zhao, Paul M Loewenstein, Maurice Green
The proto-oncogene MYC is a transcription factor over-expressed in many cancers and required for cell survival. Its function is regulated by histone acetyltransferase (HAT) complexes, such as the GCN5 complex and the NuA4/Tip60 complex. However, the roles of the HAT complexes during MYC function in cancer have not been well characterized. We recently showed that adenovirus E1A and its N-terminal 80 aa region, E1A 1-80, interact with the NuA4 complex, through the E1A TRRAP-targeting (ET) domain, and enhance MYC association with the NuA4 complex...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29321816/erbb-signaling-in-ctcs-of-ovarian-cancer-and-glioblastoma
#6
REVIEW
Anjali Geethadevi, Deepak Parashar, Erin Bishop, Sunila Pradeep, Pradeep Chaluvally-Raghavan
Circulating Tumor Cells (CTCs) are floating cell populations, which are resistant to anoikis after detachment from the primary sites and travel through the circulatory and lymphatic systems to disseminate throughout the body. CTCs are considered as seed cells for metastasis, and thus isolation of CTCs does not require any invasive procedure. Based on the nature and location of ovarian cancer and glioblastoma, the role of CTCs and hematogenous (carried by blood) spreading of tumor cells in these cancers were not understood well...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29234491/erratum-praja-is-overexpressed-in-glioblastoma-and-contributes-to-neural-precursor-development
#7
Joshua Shin, Viveka Mishra, Eric Glasgow, Sobia Zaidi, Kazufumi Ohshiro, Bhargava Chitti, Jian Chen, Amee A Kapadia, Neha Rana, Lopa Mishra, Chu-Xia Deng, Shuyun Rao, Bibhuti Mishra
[This corrects the article DOI: 10.18632/genesandcancer.151.].
September 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29234490/geminin-deficiency-enhances-survival-in-a-murine-medulloblastoma-model-by-inducing-apoptosis-of-preneoplastic-granule-neuron-precursors
#8
Savita Sankar, Ethan Patterson, Emily M Lewis, Laura E Waller, Caili Tong, Joshua Dearborn, David Wozniak, Joshua B Rubin, Kristen L Kroll
Medulloblastoma is the most common malignant brain cancer of childhood. Further understanding of tumorigenic mechanisms may define new therapeutic targets. Geminin maintains genome fidelity by controlling re-initiation of DNA replication within a cell cycle. In some contexts, Geminin inhibition induces cancer-selective cell cycle arrest and apoptosis and/or sensitizes cancer cells to Topoisomerase IIα inhibitors such as etoposide, which is used in combination chemotherapies for medulloblastoma. However, Geminin's potential role in medulloblastoma tumorigenesis remained undefined...
September 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29234489/molecular-insights-suppression-of-egfr-and-akt-activation-by-a-small-molecule-in-non-small-cell-lung-cancer
#9
Balaji Chandrasekaran, Ashish Tyagi, Arun K Sharma, Lu Cai, Murali Ankem, Chendil Damodaran
Epidermal growth factor receptor (EGFR) activation events and the mammalian target of rampamycin (mTOR) are considered important therapeutic targets in alleviating cancer conditions. The current treatment paradigm has shifted to personalized treatment strategies with tyrosine kinase inhibitors (TKIs) or anaplastic lymphoma kinase (ALK) inhibitors, due to low survival rates in non-small cell lung cancer (NSCLC) in terms of the prevailing platinum-based therapy. In the present study, we examined the anticancer potential of Verrucarin J (VJ), a small molecule, in NSCLC cell lines (H460 and A549)...
September 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29234488/sirt6-histone-deacetylase-functions-as-a-potential-oncogene-in-human-melanoma
#10
Liz Mariely Garcia-Peterson, Mary Ann Ndiaye, Chandra K Singh, Gagan Chhabra, Wei Huang, Nihal Ahmad
Melanoma is an aggressive skin cancer that can rapidly metastasize to become fatal, if not diagnosed early. Despite recent therapeutic advances, management of melanoma remains difficult. Therefore, novel molecular targets and strategies are required to manage this neoplasm. This study was undertaken to determine the role of the sirtuin SIRT6 in melanoma. Employing a panel of human melanoma cells and normal human melanocytes, we found significant SIRT6 mRNA and protein upregulation in melanoma cells. Further, using a tissue microarray coupled with quantitative Vectra analysis, we demonstrated significant SIRT6 overexpression in human melanoma tissues...
September 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29234487/alcohol-stem-cells-and-cancer
#11
REVIEW
Shoujun Gu, Bao-Ngoc Nguyen, Shuyun Rao, Shulin Li, Kirti Shetty, Asif Rashid, Vivek Shukla, Chu-Xia Deng, Lopa Mishra, Bibhuti Mishra
Dosage, gender, and genetic susceptibility to the effects of alcohol remained only partially elucidated. In this review, we summarize the current knowledge of the mechanisms underlying the role of alcohol in liver and gastrointestinal cancers. In addition, two recent pathways- DNA repair and TGF-β signaling which provide new insights into alcohol in the regulation of cancers and stem cells are also discussed here.
September 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29234486/jnk-signaling-a-multiplexing-hub-in-programmed-cell-death
#12
REVIEW
Danny N Dhanasekaran, E Premkumar Reddy
Jun N-terminal kinases or JNKs have been shown to be involved in a wide array of signaling events underlying tumorigenesis and tumor progression. Through its interaction with a diverse set of signaling proteins and adaptors, JNKs regulate cell proliferation, invasive migration, therapy resistance, and programmed cell death. JNKs have been shown to play a role in apoptotic as well as non-apoptotic programmed cell death mechanisms including those of necroptosis, ferroptosis, pyroptosis, and autophagy. Most of the tumorigenic regulatory functions of JNKs can be related to their ability to module cell death via these programmed cell death mechanisms...
September 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28966728/deregulated-expression-of-microrna-200b-c-and-suz12-a-polycomb-repressive-complex-2-subunit-in-chemoresistant-colorectal-cancer-cells
#13
KayKay San, Megan Horita, Aravinda Ganapathy, G Chinnadurai, Uthayashanker R Ezekiel
In colorectal cancer, chemotherapy and/or radiotherapy can lead to the formation of resistant cells that become metastatic through Epithelial-Mesenchymal Transition (EMT). Invasive and metastatic characteristics of carcinoma cells in primary tumors are mediated by EMT. During EMT, the primary tumor cells lose cell-cell adhesion, have increased intercellular separation, and gain an elongated shape with pseudopodia. There is also dysregulation of Polycomb group proteins (such as BMI1, SUZ12, and EZH2), and changes in the expression of microRNA-200 (miR-200) family...
July 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28966727/identification-of-candidate-genes-associated-with-triple-negative-breast-cancer
#14
Audrey Player, Nissi Abraham, Kayla Burrell, Iria Ondo Bengone, Anthony Harris, Lisa Nunez, Telisa Willaims, Sharon Kwende, Wiley Walls
When triple negative breast cancer (TNBC) are analyzed by gene expression profiling different subclasses are identified, at least one characterized by genes related to immune signaling mechanisms supporting the role of these genes in the cancers. In an earlier study we observed differences in TNBC cell lines with respect to their expression of the cytokine IL32. Our analyses showed that certain cell lines expressed higher levels of the cytokine compared to others. Because TNBC are heterogeneous and immune-related genes appear to play a pivotal role in these cancers, we chose to examine the transcriptomes of the different cell lines based on IL32 expression...
July 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28966726/pathological-and-prognostic-role-of-mdig-in-pancreatic-cancer
#15
Srinivas Ashok Kumar, Chitra Thakur, Lingzhi Li, Hongjuan Cui, Fei Chen
Pancreatic cancer is a highly aggressive malignant disease having very limited therapeutic options that ultimately results in its poor prognosis. It is still elusive on the etiology and tumorigenic mechanisms of pancreatic cancer. In the present report, we provide evidence showing involvement of the mineral dust-induced gene (mdig) in the pathogenesis and prognosis of the pancreatic cancer. Using immunohistochemistry approach on human pancreatic cancer tissue microarray, we found differential expression of mdig in pancreatic adenocarcinoma and normal pancreas...
July 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28966725/praja-is-overexpressed-in-glioblastoma-and-contributes-to-neural-precursor-development
#16
Joshua Shin, Viveka Mishra, Eric Glasgow, Sobia Zaidi, Kazufumi Ohshiro, Bhargava Chitti, Amee A Kapadia, Neha Rana, Lopa Mishra, Chu-Xia Deng, Shuyun Rao, Bibhuti Mishra
PRAJA, a RING-H2 E3 ligase, is abundantly expressed in brain tissues such as the cerebellum and frontal cortex, amongst others, and more specifically in neural progenitor cells as well as in multiple cancers that include glioblastomas. However, the specific role that Praja plays in neural development and gliomas remains unclear. In this investigation, we performed bioinformatic analyses to examine Praja1 and Praja2 expression across 29 cancer types, and observed raised levels of Praja1 and Praja2 in gliomas with an inverse relationship between Praja1 and apoptotic genes and Praja substrates such as Smad3...
July 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28966724/correlation-between-c-met-and-aldh1-contributes-to-the-survival-and-tumor-sphere-formation-of-aldh1-positive-breast-cancer-stem-cells-and-predicts-poor-clinical-outcome-in-breast-cancer
#17
Yuka Nozaki, Shoma Tamori, Masahiro Inada, Reika Katayama, Hiromi Nakane, Osamu Minamishima, Yuka Onodera, Makoto Abe, Shota Shiina, Kei Tamura, Daichi Kodama, Keiko Sato, Yasushi Hara, Ryo Abe, Ryoko Takasawa, Atsushi Yoshimori, Nariyoshi Shinomiya, Sei-Ichi Tanuma, Kazunori Akimoto
c-Met is a receptor-type tyrosine kinase, which is involved in a wide range of cellular responses such as proliferation, motility, migration and invasion. It has been reported to be overexpressed in various cancers. However, the role of c-Met in breast cancer stem cells (CSCs) still remains unclear. We herein, show that c-Met expression is significantly elevated in Basal-like type of breast cancer in comparison with other subtypes. High expression of c-Met strongly correlated with the expression of two CSC markers, ALDH1A3 and CD133 in breast cancers...
July 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28966723/extracellular-ldlr-repeats-modulate-wnt-signaling-activity-by-promoting-lrp6-receptor-endocytosis-mediated-by-the-itch-e3-ubiquitin-ligase
#18
Sapna Vijayakumar, Guizhong Liu, Huei-Chi Wen, Yaa Abu, Robert Chong, Horacio Nastri, Gadi G Bornstein, Zhen-Qiang Pan, Stuart A Aaronson
The LOW-density lipoprotein related protein 6 (LRP6) receptor is an important effector of canonical Wnt signaling, a developmental pathway, whose dysregulation has been implicated in various diseases including cancer. The membrane proximal low-density lipoprotein (LDL) receptor repeats in LRP6 exhibit homology to ligand binding repeats in the LDL receptor (LDLR), but lack known function. We generated single amino acid substitutions of LRP6-LDLR repeat residues, which are highly conserved in the human LDLR and mutated in patients with Familial Hypercholesteremia (FH)...
July 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28740578/clinical-performance-of-e2fs-1-3-in-kidney-clear-cell-renal-cancer-evidence-from-bioinformatics-analysis
#19
Bin Liang, Jianying Zhao, Xuan Wang
Extensive research on the E2F transcription factor family has led to numerous insights that E2Fs were involved not only in proliferation and tumorigenesis but also in apoptosis and differentiation. In the present study, we analyzed the differential expression of E2Fs1-3 genes, and also evaluated the impact of E2Fs 1-3 genes expression on clinical outcome from the Cancer Genome Atlas (TCGA) database. The results showed that E2F1, E2F2 and E2F3 expression was increased in KIRC tissues than matched normal tissues (E2F1, P < 0...
May 2017: Genes & Cancer
https://www.readbyqxmd.com/read/28740577/egfr-as-a-prognostic-biomarker-and-therapeutic-target-in-ovarian-cancer-evaluation-of-patient-cohort-and-literature-review
#20
Christine Mehner, Ann L Oberg, Krista M Goergen, Kimberly R Kalli, Matthew J Maurer, Aziza Nassar, Ellen L Goode, Gary L Keeney, Aminah Jatoi, Derek C Radisky, Evette S Radisky
BACKGROUND: Limited effectiveness of therapeutic agents targeting epidermal growth factor receptor (EGFR) in clinical trials using unselected ovarian cancer patients has prompted efforts to more effectively stratify patients who might best benefit from these therapies. A series of studies that have evaluated immunohistochemical (IHC) staining of EGFR in ovarian cancer biopsies has produced unclear results as to the utility of this measure as a prognostic biomarker. Here, we used one of the largest, single institution cohorts to date to determine possible associations of EGFR expression with patient outcome...
May 2017: Genes & Cancer
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