Requirement of lipocalin 2 for chronic myeloid leukemia

Abstract

The Bcr-Abl oncoprotein causes chronic myeloid leukemia by a mechanism involving its activated tyrosine kinase. BCR-ABL+ mouse hematopoietic cells persistently express and secrete lipocalin 2 by a mechanism that requires the tyrosine kinase of the Bcr-Abl oncoprotein. Our new findings indicate that lipocalin 2 is required for leukemia induction, as prevention of expression of lipocalin 2 by BCR-ABL+ mouse marrow cells totally blocks leukemia induction in a mouse model.

Keywords:

• Chronic myeloid leukemia
• Bcr-Abl
• lipocalin 2