Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.1.3.5 (5'-nucleotidase)
 3,167 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The human monocytic leukemia cell line, THP-1, is induced to differentiate into more functionally mature monocyte (macrophage)-like cells by incubation with retinoic acid at concentrations of 10nM or higher. There is no apparent morphological change accompanying this functional maturation. These induced cells show increases in nitroblue tetrazolium reduction, immunoerythrophagocytosis, hexose monophosphate shunt activity, and 5'-nucleotidase and NAD+-glycohydrolase activities. Prostaglandin E2, dibutyryl cyclic adenosine 3':5'-monophosphate, or T-lymphocyte-derived differentiation-inducing activity, all inactive or less active alone, increase the extent of differentiation of THP-1 in combination with 10nM retinoic acid. THP-1 is also induced to differentiate by 0.1nM or higher concentrations of cholera toxin. Furthermore, 24,24-difluoro-1 alpha,25-dihydroxyvitamin D3 induces less differentiation of THP-1 compared to retinoic acid. Dimethyl sulfoxide and 12-O-tetradecanoylphorbol-13-acetate show no induction of functional differentiation. THP-1 thus joins the list of leukemic myelomonocytic cell lines (e.g., the promyelocytic HL-60 and the monoblast-like U-937) that are blocked at a relatively late stage of maturation and which differentiate in response to retinoic acid.
 ...
PMID:Induction of functional differentiation of a human monocytic leukemia cell line (THP-1) by retinoic acid and cholera toxin. 298 63

Induction of terminal differentiation of two variant sublines derived from the human monocytic leukemia cell line THP-1 by all-trans-beta-retinoic acid (RA) was studied. One of the variants was approximately 10 times more resistant to RA and the other, approximately 10 times more sensitive than the parent THP-1. Differentiation of the RA-resistant variant could be induced by immune interferon (IFN-gamma) and a T-lymphocyte-derived lymphokine of a differentiation-inducing activity (DIA), alone or in combination with 10 nM RA. These induced cells showed many of functional monocyte and/or macrophage characteristics, such as superoxide anion production, phagocytosis, and antibody-dependent cellular cytotoxicity. RA suppressed the expression of Fc receptors, phagocytosis, and 5'-nucleotidase activity of the resistant cells, although not the expression of the sensitive variant. These results indicate that RA-resistant cells can be fully induced to differentiate by the combination of RA and IFN-gamma or DIA.
 ...
PMID:Variants of a human monocytic leukemia cell line (THP-1): induction of differentiation by retinoic acid, interferon-gamma, and T-lymphocyte-derived differentiation-inducing activity. 308 10