Myeloproliferative disease in transgenic mice expressing P230 Bcr/Abl: longer disease latency, thrombocytosis, and mild leukocytosis.

Abstract

P230 Bcr/Abl has been associated with indolent myeloproliferative disease (MPD). We generated transgenic mice expressing P230Bcr/Abl driven by the promoter of the long terminal repeat of the murine stem cell virus of the MSCV neo P230 BCR/ABL vector. Two founder mice exhibited mild granulocytosis and marked thrombocytosis and developed MPD. The disease of one founder mouse, no. 13, progressed to extramedullary myeloblastic crisis in the liver at 12 months old. The other founder mouse, no. 22, was found to have chronic-phase MPD with large populations of megakaryocytes and granulocytes in an enlarged spleen. The transgenic progeny of no. 22 clearly exhibited MPD at 15 months old. These results showed that P230Bcr/Abl had leukemogenic properties and induced MPD. The phenotype of the MPD caused by P230Bcr/Abl was characterized by mild granulocytosis, a high platelet count, infiltration of megakaryocytes in some organs, and a longer disease latency compared with the MPD caused by P210Bcr/Abl.

• Authors: Koiti Inokuchi, Kazuo Dan, Miyuki Takatori, Hidemasa Takahuji, Naoya Uchida, Mitsuharu Inami, Koichi Miyake, Hiroaki Honda, Hisamaru Hirai, Takashi Shimada
• Journal: Blood (Blood) Vol. 102 Issue 1 Pg. 320-3 (Jul 01 2003) ISSN: 0006-4971 [Print] United States
• PMID: 12623846 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Fusion Proteins, bcr-abl

Topics

• Animals
• Disease Models, Animal
• Fusion Proteins, bcr-abl (genetics)
• Genetic Vectors
• Leukocytosis (etiology)
• Mice
• Mice, Transgenic
• Myeloproliferative Disorders (complications, etiology, pathology)
• Phenotype
• Thrombocytosis (etiology)
• Transgenes