A chromosomal translocation uniquely associated with chronic myeloid leukemia leads to the formation of a chimeric gene, bcr-abl, on the Phil adelphia chromosome. The BRC-ABL protein displays an uncontrolled tyrosine kinase activity similar to that seen with the transforming onco gene of the Abelson murine leukemia (ABL) virus (\-abl). An interleukin 3 dependent cell line, IC.DP, has been trans...

The Breakpoint Cluster Region is a protein encoded by the BCR gene with its partially discovered function to generate instructions for producing and also encode serine/threonine kinase protein. There are three cluster regions; major (M-bcr) which high in CML patients, minor (m-bcr) 1-2% contribution CML, micro (μ-bcr) very rare case of CML. ABL1 encodes can as tyrosine kinase. translocation ABL...

Bone marrow cells from 37 patients with chronic myelogenous leukemia (CML), who had the characteristic Philadelphia chromosome in their leukemic cells, were examined for ABL gene rearrangement by pulsed-field gel electrophoresis. By using several probes from the ABL gene, we found that in 33 of 37 (89%) patients studied, the translocation breakpoints in ABL fell within the 175-kilobase (kb) int...

We describe the application of fluorescence in situ hybridization (FISH) in a case of suspected chronic myelogenous leukemia (CML), cytogenetically characterized by a t(21;22) with no clear involvement of chromosome 9. The dual color FISH technique, performed using specific painting probes for chromosomes 9,21,22 and a BCR/ABL translocation probe, enabled us to confirm the diagnosis of CML by d...

Chronic myelogenous leukemia (CML) is attributed to the chromosomal translocation t(9;22)(q34;q11), yielding the Philadelphia (Ph) chromosome. This translocation generates a fusion gene that encodes BCR-ABL, a constitutively active protein tyrosine kinase. Signal transduction pathways stimulated by BCR-ABL kinase activity promote cell survival and proliferation while inhibiting apoptosis [1]. T...

The Philadelphia chromosome (Ph1) of chronic myelogenous leukemia (CML) contains sequences from chromosome 9, including the ABL protooncogene, that have been translocated to the breakpoint cluster region (bcr) of chromosome 22, giving rise to a bcr-ABL fusion gene, whose product has been implicated in the genesis of CML. Although chromosome 22 translocation breakpoints in CML virtually always o...

The c-Abl protein tyrosine kinase is activated by ionizing radiation (IR) and certain other DNA-damaging agents. The present studies demonstrate that c-Abl associates constitutively with protein kinase C delta (PKCdelta). The results show that the SH3 domain of c-Abl interacts directly with PKCdelta. c-Abl phosphorylates and activates PKCdelta in vitro. We also show that IR treatment of cells i...

Chronic myeloid leukemia (CML) is a malignant disease caused by dysregulation of a pluripotent hematopoietic precursor cell. CML is characterized by the Philadelphia chromosome, containing the t(9;22) translocation, resulting in the chimeric BCR/ABL oncogene. This translocation has been found to be essential and sufficient for the development of CML. Depending on the exons of the BCR and ABL ge...

Bcr‑abl fusion transcripts, resulting from translocation t(9;22), are hallmarks of Philadelphia chromosome positive (Ph+) leukemias. This translocation is detected in >90% of patients with chronic myelogenous leukemia and ~20% of acute lymphoblastic leukemia patients, which predominantly express the p210 and p190 proteins, respectively. Although the occurrence of t(9;22) in healthy individuals ...

The reciprocal translocation between the long arms of chromosomes 9 and 22, t(9 : 22), results in the Philadelphia (Ph1) chromosome, the karyotypic hallmark of chronic myeloid leukaemia (CML) [1]. The molecular consequences of this translocation have been well characterized, although their contribution to the disease process is less clear. The translocation creates a hybrid transcription unit c...