Chemotherapeutic agents circumvent emergence of dasatinib-resistant BCR-ABL kinase mutations in a precise mouse model of Philadelphia chromosome-positive acute lymphoblastic leukemia

The introduction of cultured p185(BCR-ABL)-expressing (p185+) Arf (-/-) pre-B cells into healthy syngeneic mice induces aggressive acute lymphoblastic leukemia (ALL) that genetically and phenotypically mimics the human disease. We adapted this high-throughput Philadelphia chromosome-positive (Ph(+)) ALL animal model for in vivo luminescent imaging to investigate disease progression, targeted therapeutic response, and ALL relapse in living mice. Mice bearing high leukemic burdens (simulating human Ph(+) ALL at diagnosis) entered remission on maximally intensive, twice-daily dasatinib therapy, but invariably relapsed with disseminated and/or central nervous system disease. Although relapse was frequently accompanied by the eventual appearance of leukemic clones harboring BCR-ABL kinase domain (KD) mutations that confer drug resistance, their clonal emergence required prolonged dasatinib exposure. KD P-loop mutations predominated in mice receiving less intensive therapy, whereas high-dose treatment selected for T315I "gatekeeper" mutations resistant to all 3 Food and Drug Administration-approved BCR-ABL kinase inhibitors. The addition of dexamethasone and/or L-asparaginase to reduced-intensity dasatinib therapy improved long-term survival of the majority of mice that received all 3 drugs. Although non-tumor-cell-autonomous mechanisms can prevent full eradication of dasatinib-refractory ALL in this clinically relevant model, the emergence of resistance to BCR-ABL kinase inhibitors can be effectively circumvented by the addition of "conventional" chemotherapeutic agents with alternate antileukemic mechanisms of action.

Medienart:

E-Artikel

Erscheinungsjahr:

2011

Erschienen:

2011

Enthalten in:

Zur Gesamtaufnahme - volume:117

Enthalten in:

Blood - 117(2011), 13 vom: 31. März, Seite 3585-95

Sprache:

Englisch

Beteiligte Personen:

Boulos, Nidal [VerfasserIn]
Mulder, Heather L [VerfasserIn]
Calabrese, Christopher R [VerfasserIn]
Morrison, Jeffrey B [VerfasserIn]
Rehg, Jerold E [VerfasserIn]
Relling, Mary V [VerfasserIn]
Sherr, Charles J [VerfasserIn]
Williams, Richard T [VerfasserIn]

Links:

Volltext

Themen:

Antineoplastic Agents
Cdkn2a protein, mouse
Cyclin-Dependent Kinase Inhibitor p16
Dasatinib
EC 2.7.10.2
Fusion Proteins, bcr-abl
Journal Article
Pyrimidines
RBZ1571X5H
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Thiazoles

Anmerkungen:

Date Completed 02.06.2011

Date Revised 20.10.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1182/blood-2010-08-301267

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM205319408