Multidrug-resistant acute leukemia cells are responsive to prolonged exposure of daunorubicin: implications for liposome-encapsulated daunorubicin. 1998

L F Verdonck, and H M Lokhorst, and D J Roovers, and H G van Heugten
Department of Haematology, University Hospital Utrecht, The Netherlands. j.vd.velde@digd.azu.nl

We examined the cytotoxic effects of free daunorubicin (DNR) and liposome-encapsulated DNR on multidrug-resistant (MDR1) leukemia cells of patients with acute leukemias who had failed primary induction treatment that included DNR. This was analyzed ex-vivo with DNR concentrations and exposure times that normally can be achieved in-vivo for both drugs with induction treatment. The leukemic blasts of patients both with drug-resistant AML and drug-resistant ALL were, ex-vivo, very sensitive to DNR concentrations and exposure times that can be achieved in-vivo by liposome-encapsulated DNR. However, under identical conditions, free DNR and liposome-encapsulated DNR had a similar cytotoxic profile, arguing against a unique mechanism of cytotoxicity by the liposomal constructure. These data suggest that liposome-encapsulated DNR may be preferable to free DNR for the treatment of acute leukemias.

UI MeSH Term Description Entries
D008081 Liposomes Artificial, single or multilaminar vesicles (made from lecithins or other lipids) that are used for the delivery of a variety of biological molecules or molecular complexes to cells, for example, drug delivery and gene transfer. They are also used to study membranes and membrane proteins. Niosomes,Transferosomes,Ultradeformable Liposomes,Liposomes, Ultra-deformable,Liposome,Liposome, Ultra-deformable,Liposome, Ultradeformable,Liposomes, Ultra deformable,Liposomes, Ultradeformable,Niosome,Transferosome,Ultra-deformable Liposome,Ultra-deformable Liposomes,Ultradeformable Liposome
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003630 Daunorubicin A very toxic anthracycline aminoglycoside antineoplastic isolated from Streptomyces peucetius and others, used in treatment of LEUKEMIA and other NEOPLASMS. Daunomycin,Rubidomycin,Rubomycin,Cerubidine,Dauno-Rubidomycine,Daunoblastin,Daunoblastine,Daunorubicin Hydrochloride,NSC-82151,Dauno Rubidomycine,Hydrochloride, Daunorubicin,NSC 82151,NSC82151
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000903 Antibiotics, Antineoplastic Chemical substances, produced by microorganisms, inhibiting or preventing the proliferation of neoplasms. Antineoplastic Antibiotics,Cytotoxic Antibiotics,Antibiotics, Cytotoxic
D015452 Precursor B-Cell Lymphoblastic Leukemia-Lymphoma A leukemia/lymphoma found predominately in children and adolescents and characterized by a high number of lymphoblasts and solid tumor lesions. Frequent sites involve LYMPH NODES, skin, and bones. It most commonly presents as leukemia. Leukemia, Pre-B-Cell,Pre-B-Cell Leukemia,Pre B-ALL,Pre-B ALL,Precursor B-Cell Lymphoblastic Leukemia,Precursor B-Cell Lymphoblastic Lymphoma,Leukemia, Pre B Cell,Leukemias, Pre-B-Cell,Pre B ALL,Pre B Cell Leukemia,Pre-B-Cell Leukemias,Precursor B Cell Lymphoblastic Leukemia,Precursor B Cell Lymphoblastic Leukemia Lymphoma,Precursor B Cell Lymphoblastic Lymphoma
D015459 Leukemia-Lymphoma, Adult T-Cell Aggressive T-Cell malignancy with adult onset, caused by HUMAN T-LYMPHOTROPIC VIRUS 1. It is endemic in Japan, the Caribbean basin, Southeastern United States, Hawaii, and parts of Central and South America and sub-Saharan Africa. ATLL,HTLV I Associated T Cell Leukemia Lymphoma,HTLV-Associated Leukemia-Lymphoma,HTLV-I-Associated T-Cell Leukemia-Lymphoma,Human T Lymphotropic Virus Associated Leukemia Lymphoma,Human T Lymphotropic Virus-Associated Leukemia-Lymphoma,Human T-Cell Leukemia-Lymphoma,Leukemia Lymphoma, Adult T Cell,Leukemia Lymphoma, T Cell, Acute, HTLV I Associated,Leukemia, Adult T-Cell,Leukemia-Lymphoma, T-Cell, Acute, HTLV-I-Associated,T Cell Leukemia Lymphoma, HTLV I Associated,T Cell Leukemia, Adult,T-Cell Leukemia, Adult,T-Cell Leukemia-Lymphoma, Adult,T-Cell Leukemia-Lymphoma, HTLV-I-Associated,Adult T-Cell Leukemia,Adult T-Cell Leukemia-Lymphoma,Adult T-Cell Leukemia-Lymphomas,Adult T-Cell Leukemias,HTLV Associated Leukemia Lymphoma,HTLV-Associated Leukemia-Lymphomas,HTLV-I-Associated T-Cell Leukemia-Lymphomas,Human T Cell Leukemia Lymphoma,Human T-Cell Leukemia-Lymphomas,Leukemia, Adult T Cell,Leukemia-Lymphoma, HTLV-Associated,Leukemia-Lymphoma, HTLV-I-Associated T-Cell,Leukemia-Lymphoma, Human T-Cell,Leukemia-Lymphomas, Adult T-Cell,Leukemia-Lymphomas, HTLV-Associated,Leukemia-Lymphomas, HTLV-I-Associated T-Cell,Leukemia-Lymphomas, Human T-Cell,Leukemias, Adult T-Cell,T Cell Leukemia Lymphoma, Adult,T-Cell Leukemia-Lymphoma, Human,T-Cell Leukemia-Lymphomas, Adult,T-Cell Leukemia-Lymphomas, HTLV-I-Associated,T-Cell Leukemia-Lymphomas, Human,T-Cell Leukemias, Adult

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