Linked Life Data

10467274

Source:http://linkedlifedata.com/resource/pubmed/id/10467274

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1999-9-30
pubmed:abstractText
The administration of retinoids has been demonstrated to be of potential utility in the therapy of a wide spectrum of neoplastic pathologies due to the ability to induce differentiation in a large variety of primary tumor cells as well as in vitro cultured cell lines. Moreover, a number of compounds, including hemin, cytosine arabinoside, and 5-azacytidine are able to induce erythroid differentiation of the erythroleukemic cell line K562. In this paper we determined whether a combined treatment of K562 cells with suboptimal concentrations of cytosine arabinoside and retinoids containing liposomes lead to a full expression of differentiated functions. Liposomes were prepared by reverse phase evaporation technique followed by extrusion through polycarbonate filters. Cell growth kinetics studies and intracellular detection of hemoglobin by benzidine staining were performed. The results obtained showed that the combined treatment with liposomes containing retinoids and sub-optimal concentration of ara-C is an effective strategy to induce K562 cell differentiation, minimizing at the same time toxic effects. Control experiments aimed to determine possible selection of subpopulations of K562 cells suggest that the observed results are not related to toxicity and/or potential selection of induced cells. In conclusion, liposomally delivered retinoids could be proposed for differentiation therapy as an effective strategy in the treatment and management of malignancy. In addition, the finding that liposomally delivered retinoids increase the capacity of cytosine arabinoside to induce erythroid differentiation, could be of interest in studies aimed at the development of treatment able to reactivate fetal globin genes in beta-thalassemia patients.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0361-8609
pubmed:author
pubmed:copyrightInfo
Copyright 1999 Wiley-Liss, Inc.
pubmed:issnType
Print
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
33-43
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
In vitro effect on human leukemic K562 cells of co-administration of liposome-associated retinoids and cytosine arabinoside (Ara-C).
pubmed:affiliation
Department of Pharmaceutical Sciences, University of Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't