RNase H of human leukemic cells: a new biological parameter in the study of human leukemias (review).
Anticancer Res
; 10(5A): 1201-12, 1990.
Article
em En
| MEDLINE
| ID: mdl-2173471
ABSTRACT
This article reviews the authors' investigation of the enzyme RNase H (EC 3.1.4.34.) in human leukemic cells and presents the accumulated available data, based on which this enzyme is proposed to serve as a new biological parameter in the study of progression of human leukemias. The introduction gives a brief account of the occurrence, characterization and possible biological role of RNase H in cells and in retroviruses. The results reviewed briefly concern (1) the development of a new convenient, economic and reliable assay for normal and leukemic blood mononuclear cell RNase H, which is capable of resolving subtle activity differences between samples; (2) the differentiation of RNase H levels between normal and leukemic cells; (3) the correlation of RNase H levels from different leukemia types with the severity of the disease; (4) the correlation of RNase H levels in leukemic cells with clonogenic stages in the clonal differentiation pathway; (5) the predictive potential of a RNase H activity-based parameter (phi) in assessing progression in acute myelocytic leukemia and (6) the possibility of differentiation of the RNase H levels between normal and leukemic cells via regulation of the enzyme activity at the level of antagonistic phosphorylations mediated by cAMP and calmodulin.
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Base de dados:
MEDLINE
Assunto principal:
Leucemia
/
Endorribonucleases
Limite:
Humans
Idioma:
En
Revista:
Anticancer Res
Ano de publicação:
1990
Tipo de documento:
Article
País de afiliação:
Grécia