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Insights into Ecto-5'-Nucleotidase as a New Target for Cancer Therapy: A Medicinal Chemistry Study.

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Ecto-5'-nucleotidase (ecto-5'-NT, 5'-NT, eN, CD73) is a membrane ecto-enzyme that is primarily responsible for the extracellular production of adenosine from AMP. Ecto-5'-NT is over expressed in various types of cancer cells, leading to elevated concentrations of adenosine in the tumor

Adenosine deaminase, 5'-nucleotidase, xanthine oxidase, superoxide dismutase, and catalase activities in gastric juices from patients with gastric cancer, ulcer, and atrophic gastritis.

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Adenosine deaminase (ADA), 5'-Nucleotidase (5NT), Xanthine oxidase (XO), Cu-Zn Superoxide dismutase (SOD) and Catalase (CAT) activities were determined in gastric juices from patients with gastric cancer, ulcer, gastritis and from healthy subjects. Enzyme activities were given as units per ml

[Activity of 5'-nucleotidase from thymus and tumors upon administering bradykinin to tumor-bearing mice].

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Activity of 5'-nucleotidase was inhibited in thymus tissue of tumor-bearing mice; bradykinin (1 mg/kg body weight) increased the enzymatic activity 2.0-2.2-fold. Administration of bradykinin led to inhibition of allogenic Crocker's sarcoma growth and to stimulation of syngeneic mastocytoma P-815

Effect of 5'-nucleotidase inhibitors on mouse immune system and experimental murine tumors.

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Nucleoticidin and melanocidins A and B exhibited potent inhibitory activity against 5'-nucleotidases from rat liver membrane and snake venom. Nucleoticidin retarded growth of Sarcoma 180 solid tumor, and melanocidins A and B prolonged the survival period of mice bearing B16 melanoma. These

Serum 5'-nucleotidase of a breast cancer patient.

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Serum derived from the breast cancer patient included in this study was found to be a rich source of 5'-nucleotidase. In addition, it also contains nonspecific alkaline phosphatase. The properties of 5'-nucleotidase were studied by eliminating the interference of serum non-specific alkaline

Determination of the enzymatic activity of cytosolic 5'-nucleotidase cN-II in cancer cells: development of a simple analytical method and related cell line models.

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The cytosolic 5'-nucleotidase (cN-II) has been shown to be involved in the response of cancer cells to cytotoxic agents, and the quantification of its activity in biological samples is of great interest. In this context, we developed and validated an analytical method for determination of cN-II

Implications of a 5'-nucleotidase inhibitor in human leukemic cells for cellular aging and cancer.

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5'-Nucleotidase activity of normal human embryonic lung fibroblasts (IMR-90) was found to be inhibited by the homogenates of seven different cell lines originated from patients with different kinds of leukemia and of fresh lymphocytes from a patient with Sezary syndrome (circulating T-cell

New 5'-nucleotidase inhibitors, NPF-86IA, NPF-86IB, NPF-86IIA, and NPF-86IIB from Areca catechu; Part II. Anti-tumor effects.

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The antiinflammatory mechanism of methotrexate depends on extracellular conversion of adenine nucleotides to adenosine by ecto-5'-nucleotidase: findings in a study of ecto-5'-nucleotidase gene-deficient mice.

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OBJECTIVE Evidence from in vitro, in vivo, and clinical studies indicates that adenosine mediates, at least in part, the antiinflammatory effects of methotrexate (MTX), although the biochemical events involved have not been fully elucidated. This study was undertaken to investigate whether MTX

Malignant fibrous histiocytoma tumor cells resemble fibroblasts.

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The malignant fibrous histiocytomas (MFHs) are a histologically heterogeneous group of sarcomas that have been postulated to be derived from, or have the capacity to differentiate into, histiocytes. To determine whether MFH tumor cells actually express the features of histiocytes, i.e., bone

Vascular markers for murine tumours.

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Damage to the vasculature may represent an important component of several forms of cancer therapy. Methods for studying the structure and function of the vasculature of experimental mouse tumours are required. In this paper several relatively simple methods are described for the histological

Anti-CD73 immunotherapy: A viable way to reprogram the tumor microenvironment.

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The ecto-5'-nucleotidase/CD73 enzyme plays a pivotal role in generating an adenosine-enriched immunosuppressed and pro-angiogenic niche supporting cancer development. The targeting of CD73 leads to reorganization of tumor microenvironment, shaping the phenotype of the infiltrating T cells. The

In vitro evaluation of adenosine 5'-monophosphate as an imaging agent of tumor metabolism.

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Adenosine appears to play an important role in tumor growth and metastasis. Synthesized (11)C-adenosine 5'-monophosphate (AMP) has recently been reported as a potential tumor-imaging radiotracer. METHODS A variety of human tumor cell lines (SKOV-3, SCC-15, U251, U87, Raji, and Daudi) were incubated

Induction of adenosine deaminase and 5' nucleotidase activity in cultured human blood monocytes and monocytic leukemia (THP-1) cells by differentiating agents.

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The in vitro effect of short-term culture as well as the effect of retinol (ROH), retinoic acid (RA), muramyl dipeptide [( Abu']MDP), lipopolysaccharide (LPS), and gamma interferon (IFN-gamma) on the induction of the purine metabolic enzymes, adenosine deaminase (ADA), purine nucleoside

Expression of CD73/ecto-5'-nucleotidase on human gingival fibroblasts and contribution to the inhibition of interleukin-1alpha-induced granulocyte-macrophage colony stimulating factor production.

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OBJECTIVE CD73/5'-nucleotidase (5'-NT) is an ectoenzyme that participates in immune/inflammatory reactions. We examined the possible expression of CD73/5'-NT on human gingival fibroblasts (hGF), which are important to the immune/inflammatory system in periodontal tissue. RESULTS We demonstrated that

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