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deaminase in Medical News

Study Suggests Green Tea May Support the Medical Treatment of Stomach and Colon Cancer

...hout green tea extract. Protein levels of the tissues were studied and adjusted to equal concentrations. Xanthine oxidase (XO) and reduced adenosine deaminase (ADA) enzyme activities were measured before and after the incubation period. Percentage changes for the 3 different concentrations of green tea extra...

Yale study offers insight into possible cause of lymphoma

...ells' antibody genes to make them more effective in fighting infection. SHM occurs in two steps: First, a mutation initiator, or activation-induced deaminase (AID), causes genetic mutations. Second, DNA repair enzymes spot the changes and begin making "sloppy" repairs, which lead to yet more mutations. The ...

Stem Cells from Human Fat Tissue to Hunt for and Kill Cancerous Tumours

...ed the mesenchymal stem cells from human fat tissue, and after expanding their number in the lab, used a retrovirus vector to insert the gene cytosine deaminase into the cell. The gene can convert a less toxic drug, 5-fluorocytosine (5-FC), used in chemotherapy, to 5-FU inside the stem cells, and the ...

Scientists Develop Method to Track Immune System Enzyme in Live Animals

...y and B cell tumor development. Their report appears in the Journal of Experimental Medicine. The enzyme, known as activation-induced cytidine deaminase or AID (which has no relation to the AIDS virus), is expressed by B cells, which are produced in the bone marrow and are responsible for making antibo...

Gene Therapy for Hereditary Immunodeficiency Diseases

...nued great difficulties with technical implementation, initial successes in somatic gene therapy are on the horizon, for example in treating adenosine deaminase deficiency and chronic granulomatous disease. There are also initial indicators that point to the efficacy of gene therapy in treating chronic lymphat...
deaminase in Medical Technology

SuperGen's Novel Hypomethylating Agent Highlighted at AACR Plenary Session

...th improved preclinical pharmacokinetics, and has a similar impact on HbF in non-human primates. The dinucleotide S110 is highly resistant to cytidine deaminase degradation in pre-clinical studies. This can potentially lead to longer half-life, improved bioavailability, and lower the dose requirement in patien...

Amsterdam Molecular Therapeutics BV to present preclinical proof-of-concept data on its gene therapy AMT-020 to treat acute intermittent porphyria

...Adeno-Associated Virus (AAV) vector delivering the gene for porphobilinogen deaminase (PBGD). The aim of this study, which was performed by Dr's Fontanellas, Gon...ed disease characterised by a partial deficiency of hepatic porphobilinogen deaminase (PBGD). Clinical symptoms include attacks of acute abdominal pain, muscular...
deaminase in Biological News

University of Minnesota research leads to new technology to protect human health

...elamine deaminase, used in the MaxDiscovery Melamine Test kit and the enzyme will be produced in the BTI Pilot Plant fermentation facilities. Melamine deaminase works by breaking one of the C-N bonds in melamine to release ammonia, which can be detected by a simple test that turns the liquid blue. Jennifer Sef...

Newly found enzymes may play early role in cancer

...ly, can we find ways to shut them off and prevent these mutations?" The enzymes leading to DNA demethylation involve the coupling of a 5-meC deaminase enzyme, a G:T glycosylase enzyme and Gadd45, which is not an enzyme. ...

UC Davis stem researchers demonstrate safety of gene therapy using adult stem cells

...d on eighteen cell and gene therapy clinical therapy trials during their 12 years as colleagues, including stem cell gene therapy trials for adenosine deaminase deficiency, also known as the "Bubble Boy Disease," and stem cell gene therapy for HIV, with colleagues from Children's Hospital Los Angeles, who are ...

Development of gene therapy

...nued great difficulties with technical implementation, initial successes in somatic gene therapy are on the horizon, for example in treating adenosine deaminase deficiency and chronic granulomatous disease. There are also initial indicators that point to the efficacy of gene therapy in treating chronic lymphat...

USC team reveals structure of APOBEC family protein

...-IgM immunodeficiency syndrome type 2, or HIGM-2. The syndrome is characterized by mutations in the gene encoding AID, the activation-induced cytidine deaminase protein, and a weakened immune system. USC biochemist Myron Goodman and his former graduate student Ronda Bransteitter collaborated with Chen's g...
deaminase in Biological Technology

Gene Therapy Field Advances With Important Clinical Findings Reported in the New England Journal of Medicine

...IUMLOGO ) The New England Journal of Medicine (NEJM) reported on the success of a DNA-based approach for the introduction of a normal adenosine deaminase gene into the patient's hematopoietic stem cells that have been removed from the bone marrow. After transfection of the cells with the gene, the cell...

Transfection Reagent Selector Kit Handbook

...sphotransferase (APH; neoR gene) or hygromycin B phosphotransferase (HPH). Other selectable markers are the genes encoding adenosine deaminase (ADA), dihydrofolate reductase (DHFR), thymidine kinase (TK) or xanthine-guanine phosphoribosyl tranferase (XGPRT; gpt gene). ...
deaminase in Biological Definition

Purine

...ome animal species (e.g. dogs) that lack an intrinsic urease enzyme that can further degrade uric acid. The deficiency of another enzyme, adenosine deaminase , needed to break down adenine, is a cause of severe combined immunodeficiency . Purines from turnover of nucleic acids (or from food) can also be ...
deaminase in Biological Dictionary

Adenosine deaminase

Adenosine deaminase is an enzyme (EC 3.5.4.4) involved in purine metabolism. It is needed for the breakdown of adenosine from food and for the turnover of nucleic acids in tissues. double-stranded RNA adenosine deaminase activity. • zinc ion binding. • hydrolase activity ... ...

Z-DNA

...in a zig-zag pattern . Z - DNA is thought to be one of three... left-handed Z - DNA binding. • RNA binding. • double-stranded RNA adenosine deaminase activity ... a b "Entrez Gene: ZBP1 Z - DNA binding protein 1" ... Nature is the international weekly journal of science: a magazin...

Somatic hypermutation

... Because this somatic hypermutation is potentially dangerous, it has been ... This somatic hypermutation requires activation-induced cytidine deaminase (AID) ... Evolution and the molecular basis of somatic hypermutation of antigen receptor genes. ... to evolution immune somatic - hyperm...

Guanine

...etters ATGC, guanine is the "G" ... Guanine deaminase · Adenosine deaminase · AMP deaminase · Inosine monophosphate ... Hypoxanthine- guanine ...

Cytosine

...-5-)-methyltransferas e ... cytosine -specific DNA methyltransferase. DCMT. deoxyribonucleate methylase ... Information on EC 3.5.4.1 - cytosine deaminase ... cytosine + H2O = uracil + NH3 ... In course of reaction, cytosine reorients to favor nucleophilic attack by ... In nucleosides and nucleo...
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