Cytosine deaminase
OPTIMUM CONDITIONS FOR CYTOSINE DEAMINASE PRODUCTION BY LOCAL ISOLATE OF ESCHERICHIA COLI E9
... higher cytosine deaminase producer Escherichia coli and studying the optimum condition for its production, a total of twenty-five urine samples were collected for the isolation of ...tests. Cytosine ...
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Characterization and Cytotoxic Activity of Cytosine Deaminase Enzyme Purified from Locally Isolated Escherichia coli Asmaa A. Hussein|Ali Saadi Al-Baer
... Meyers et al. (25) discussed the conversion of 5-fluorocytosine (5-FC) to the toxic metabolite, 5-fluorouracil (5-FU), then this metabolite is converted by cellular enzymes into 5-FdUMP, which inhibits the synthesis of ...
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Dihydropyrimidine Dehydrogenase Is a Prognostic Marker for Mesenchymal Stem Cell-Mediated Cytosine Deaminase Gene and 5-Fluorocytosine Prodrug Therapy for the Treatment of Recurrent Gliomas
... Over the last few decades, the cell-based approach to cancer therapy has been extensively studied using therapeutic genes such as HSV-TK, TRAIL, and others [21-24]. However, in their clinical application, one of the ...
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Targeted enzyme prodrug therapy for metastatic prostate cancer – a comparative study of L-methioninase, purine nucleoside phosphorylase, and cytosine deaminase
... Background: Enzyme prodrug therapy shows promise for the treatment of solid tumors, but current approaches lack effective/safe delivery strategies. To address this, we previously developed three enzyme-containing fusion ...
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<p>Gene Therapy with Cytosine Deaminase and Endostatin Fusion Gene Mediated by Endothelial Progenitor Cells in Hepatomas</p>
... Cytosine deaminase (CD) is a suicide enzyme capable of converting non-toxic 5- fl uorocytosine (5-FC) into a cytotoxic 5- fl uorouracil (5-FU), which is widely used as a chemotherapeutic ...
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A Ser29Leu SUBSTITUTION IN THE CYTOSINE DEAMINASE Fca1p IS RESPONSIBLE FOR CLADE SPECIFIC 5 FLUCYTOSINE RESISTANCE IN Candida dubliniensis
... The close relative of C. dubliniensis, C. albicans, also exhibits clade-specific resistance to 5FC, and resistance is most commonly mediated by an Arg101Cys substitution in the FUR1 gene encoding uracil phosphoribosyl- ...
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Antitumor efficacy of cytosine deaminase-armed vaccinia virus plus 5-fluorocytosine in colorectal cancers
... property. Cytosine deaminase (CD), which is derived from bacteria or yeast, can convert a relatively nontoxic prodrug 5-fluorocytosine (5-FC) into the active anticancer drug 5-Fluoro- uracil ...
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AID/APOBEC cytosine deaminase induces genome-wide kataegis
... multiple cytosine deaminations catalyzed by AID/APOBEC ...hypermutagenic deaminase from sea ...unleashed cytosine deaminase activity is an evolutionary conserved, prominent source of ...
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Functional Upregulation of the DNA Cytosine Deaminase APOBEC3B by Polyomaviruses
... FIG 5 Knockdown of A3B eliminates deaminase activity during BKPyV infection but does not affect BKPyV lytic infection. Cells were left untreated or treated with nontargeting control (NTC) siRNA or A3B-targeting ...
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Purification and characterization of Aspergillus parasiticus cytosine deaminase for possible deployment in suicide gene therapy
... Crude CD was precipitated between 20% - 90% of ammonium sulphate saturation. Each fraction was cen- trifuged at 10,000 g for 20 min after standing over night at 4˚C. Cytosine deaminase activity and total ...
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Defining And Exploiting The Cytosine Deaminase Activity Of Apobec3a On The Extended Epigenome
... hypothesized that by adding this tag to our protein, we could degrade, and therefore prevent toxicity of, any proteins that were expressed prior to induction; after induction, however, we hypothesized that the ...
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Human Papillomavirus E6 Triggers Upregulation of the Antiviral and Cancer Genomic DNA Deaminase APOBEC3B
... DNA cytosine deaminase APOBEC3B (A3B) as a sig- nificant source of genomic uracil lesions and mutagenesis in multiple human cancers, including those of the breast, head/neck, cervix, bladder, lung, ovary, ...
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Current status and potential challenges of mesenchymal stem cell-based therapy for malignant gliomas
... CD: Cytosine deaminase; EGF: Endothelial cell growth factor; ESC: Embryonic stem cell; gbMSC: Glioma-associated mesenchymal stem cell; GSC: Glioma stem cell; HPC: Haematopoietic progenitor cell; HSV-TK: ...
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Mesenchymal stem cells in preclinical cancer cytotherapy: a systematic review
... 5-FC: 5-Fluorocytosine; AT-MSC: Adipose tissue-derived mesenchymal stem cells; BM-MSC: Bone marrow stroma-derived mesenchymal stem cells; CD::UPRT: Cytosine deaminase to uracil phosphori[r] ...
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Oncolytic virotherapy in veterinary medicine: current status and future prospects for canine patients
... CDase: cytosine deaminase; CDV: Canine distemper virus; ECM: extracellular matrix; EGFR: Epidermal Growth Factor Receptor; GM-CSF: Granulocyte Macrophage Colony Stimulating Factor; GusA: beta-glucuronidase; ...
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Therapeutic properties of a vector carrying the HSV thymidine kinase and GM CSF genes and delivered as a complex with a cationic copolymer
... CD: Cytosine deaminase; EPR: Enhanced permeability and retention effect; FLM: Frequency of lymphogenic metastasis; GCV: Ganciclovir; GDEPT: Gene directed enzyme prodrug gene therapy; GM-CSF: Granulocyte – ...
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CITRIC: cold-inducible translational readthrough in the chloroplast of Chlamydomonas reinhardtii using a novel temperature-sensitive transfer RNA
... 5-FC: 5-fluorocytosine; CITRIC: cold-inducible translational readthrough in chloroplasts; CrCD: cytosine deaminase protein; PTC: premature termination codon; TAP: tris-acetate-phosphat[r] ...
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Introduction of Three Independent Selection Markers in Leishmania
... Cytosine deaminase (CD) is found in a variety of bacteria and fungi. It functions in the salvage pathway during nutritional stress to deaminate cytosine to uracil [6]. Cells expressing these enzymes ...
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Oncolytic viruses: overcoming translational challenges
... enzyme, cytosine deaminase, result- ed in a therapeutic effect mediated by suicide gene therapy as well as antitumor immunity in metastatic colorectal, pancreat- ic, and GBM tumor mouse models ...
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Bis(cytosinium) hexachlorostannate(IV)
... 1992). Cytosine (6-aminopyrimidin-2-one) is one of the pyrimi- dines found in deoxyribonucleic ...and cytosine has been reported to date (Casellato, ...and cytosine, and examine the hydrogen bonding ...
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