GSE132814 Helicase-like transcription factor (Hltf) gene-deletion promotes oxidative phosphorylation (OXPHOS) in colorectal tumors of AOM/DSS-treated mice

Contributors : Rebecca A Helmer ; Gurvinder Kaur ; Lisa A Smith ; Beverly S ChiltonSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThe helicase-like transcription factor (HLTF) gene – a tumor suppressor in human colorectal cancer (CRC) - is regulated by alternative splicing and promoter hypermethylation. The detection of hypermethylated HLTF DNA in fecal occult blood tests is an indicator of disease recurrence and poor survival. Hltf-deficiency in the ApcMin/+ mouse strain in creased the formation of intestinal adenocarcinoma with a high incidence of gross chromosomal instabilities. To investigate Hltf-deletion effects in CRC without cross-breeding into a tumorigenic strain, Hltf-deletion was studied in mice treated with the carcinogen azoxymethane (AOM) and the proinfla mmatory agent dextran sulfate (DSS). Hltf-deletion resulted in weight loss beginning at treatment week 6, and poor survival (Kaplan-Meier survival plot). Hltf-deletion increased tumor multiplicity compared to controls, and dramatically shifted the topographic distribution of lesions into the rectum. Differential isoform expression analysis of lesions from control mice revealed both the truncated isoform that lacks a DNA-repair domain and the full length isoform capable of DNA damage repair are present (3:1.8 ratio) during adenocarcinoma formation. iPathwayGuide identified 51 dynamically regula ted genes of 10,967 total genes with measured expression. Oxidative Phos...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Mus musculus Source Type: research

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Publication date: Available online 20 July 2019Source: European UrologyAuthor(s): Elise De Bleser, Barbara Alicja Jereczek-Fossa, David Pasquier, Thomas Zilli, Nicholas Van As, Shankar Siva, Andrei Fodor, Piet Dirix, Alfonso Gomez-Iturriaga, Fabio Trippa, Beatrice Detti, Gianluca Ingrosso, Luca Triggiani, Alessio Bruni, Filippo Alongi, Dries Reynders, Gert De Meerleer, Alessia Surgo, Kaoutar Loukili, Raymond MiralbellAbstractBackgroundStereotactic body radiotherapy (SBRT) and elective nodal radiotherapy (ENRT) are being investigated as metastasis-directed treatments in oligorecurrent prostate cancer (PC); however, comparat...
Source: European Urology - Category: Urology & Nephrology Source Type: research
ConclusionWe performed cholecystectomy by using IFC to identify the aberrant subvesical bile duct. To the best of our knowledge, this is the first report showing the fluorescence image of an aberrant subvesical bile duct in a state of nature.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
ConclusionThe incidence of midline and lateral port site recurrence after laparoscopy for diagnosis or resection of ovarian cancer has not been determined. Limitation of trochar sites to the midline may reduce the extent of abdominal wall disease spread.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
ConclusionsPeritoneal tunnels in the inguinal region or at the porta hepatis should be opened by surgical dissection so that all foci of peritoneal metastases are removed at a complete cytoreductive surgery and these sites treated with chemotherapy.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
ConclusionsPrevention of recurrent right colon cancer is an import consideration for primary resection. However, if this duodenum is involved by recurrence, techniques for resection exist.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
In this study we tested the clinoptilolite, chabazite, and natrolite ability to be loaded by antitumor ribonuclease binase and the cytotoxicity of the obtained complexes. We found the optimal conditions for binase loading into zeolites and established the dynamic of its release. Cytotoxic effects of zeolite-binase complexes toward colorectal cancer Caco2 cells were characterized after 24 and 48 h of incubation with cells using MTT-test. Zeolites were toxic by itselfs and reduced cells viability by 30% (clinoptilolite), 40% (chabazite), and 70% (natrolite) after 48 h of incubation. Binase complexes with clinoptilolite as we...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
In this study, we aimed to investigate the potential anti-proliferative and pro-apoptotic activities of SNG in a panel of MM cell lines (U266, IM9, MM1S, and RPMI-8226). SNG treatment of MM cells resulted in a dose-dependent decrease in cell viability through mitochondrial membrane potential loss and activation of caspase 3, 9, and cleavage of PARP. Pre-treatment of MM cells with a universal caspase inhibitor, Z-VAD-FMK, prevented SNG mediated loss of cell viability, apoptosis, and caspase activation, confirming that SNG-mediated apoptosis is caspase-dependent. The SNG-mediated apoptosis appears to be resulted from suppres...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
In conclusion, osmotic burst of inflated complement-damaged cells may occur, but these bursts are most likely a consequence of metabolic collapse of the cell rather than the cause of cell death. The Complement Cell Death Mediator: A Concerted Action of Toxic Moieties Membrane pores caused by complement were first visualized by electron microscopy on red blood cell membranes as large ring structures (22). Similar lesions were viewed on E. coli cell walls (23). Over the years, ample information on the fine ultrastructure of the MAC that can activate cell death has been gathered (24) and has been recently further examined (...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Rinat Bar-Shalom1, Margalit Bergman2, Shlomo Grossman2, Naiel Azzam1, Lital Sharvit1 and Fuad Fares1* 1Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel 2Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel Colorectal cancer (CRC) is the second most common cancer in females and the third in males worldwide. Conventional therapy of CRC is limited by severe side effects and by the development of resistance. Therefore, additional therapies are needed in order to combat the problem of selectivity and drug resistance in CRC patients. Inula viscosa (IV) is a well-...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Publication date: Available online 27 November 2018Source: Pharmacological ResearchAuthor(s): Fiona Augsburger, Csaba SzaboAbstractHydrogen sulfide (H2S), produced by various endogenous enzyme systems, serves various biological regulatory roles in mammalian cells in health and disease. Over recent years, a new concept emerged in the field of H2S biology, showing that various cancer cells upregulate their endogenous H2S production, and utilize this mediator in autocrine and paracrine manner to stimulate proliferation, bioenergetics and tumor angiogenesis. Initial work identified cystathionine-beta-synthase (CBS) in many tum...
Source: Pharmacological Research - Category: Drugs & Pharmacology Source Type: research
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