Abstract
The Interferon Regulatory Factor (IRF) family consists of multiple transcription factors involved in the regulation of a variety of biological processes. Originally identified as transcriptional regulators of the type I interferon system, IRFs play a pivotal role in adaptive immunity, cell growth, differentiation and tumorigenesis. Hence, understanding IRF biology has important implications in the host response to cancer development and progression. Many lines of evidence suggest that different IRFs are involved in the pathogenesis of Chronic Myeloid Leukemia (CML), a myeloproliferative disorder caused by the BCR-ABL oncoprotein. BCR-ABL displays constitutive tyrosine kinase activity that favors cell proliferation, inhibits apoptosis and allows cell survival even in the absence of proper adhesion to the extracellular matrix. Different BCR-ABL tyrosine kinase inhibitors are currently available for CML treatment. These drugs are able to generate eight year CML-specific overall survival rates >90%, only a minority of patients will achieve molecular responses compatible with drug discontinuation. Thus, there is an unmet need for additional therapeutic targets that may lead to the cure of most patients diagnosed with CML. A growing body of evidence has suggested a role for both IRF4 and IRF8 in the pathogenesis of CML. Furthermore, IRF1 is consistently deleted at one or both alleles in patients with leukemia and myelodysplasia. Finally, we have recently demonstrated that IRF5 is a target of BCR-ABL kinase activity and reduces CML cell proliferation. In this article, we provide an update on the current knowledge of the role of the IRFs in CML.
Keywords: IRFs, BCR-ABL, CML, hematopoiesis, proliferation, gene-regulation.
Current Cancer Drug Targets
Title:Roles of Interferon Regulatory Factors in Chronic Myeloid Leukemia
Volume: 16 Issue: 7
Author(s): Livia Manzella, Elena Tirrò, Maria Stella Pennisi, Michele Massimino, Stefania Stella, Chiara Romano, Silvia Rita Vitale and Paolo Vigneri
Affiliation:
Keywords: IRFs, BCR-ABL, CML, hematopoiesis, proliferation, gene-regulation.
Abstract: The Interferon Regulatory Factor (IRF) family consists of multiple transcription factors involved in the regulation of a variety of biological processes. Originally identified as transcriptional regulators of the type I interferon system, IRFs play a pivotal role in adaptive immunity, cell growth, differentiation and tumorigenesis. Hence, understanding IRF biology has important implications in the host response to cancer development and progression. Many lines of evidence suggest that different IRFs are involved in the pathogenesis of Chronic Myeloid Leukemia (CML), a myeloproliferative disorder caused by the BCR-ABL oncoprotein. BCR-ABL displays constitutive tyrosine kinase activity that favors cell proliferation, inhibits apoptosis and allows cell survival even in the absence of proper adhesion to the extracellular matrix. Different BCR-ABL tyrosine kinase inhibitors are currently available for CML treatment. These drugs are able to generate eight year CML-specific overall survival rates >90%, only a minority of patients will achieve molecular responses compatible with drug discontinuation. Thus, there is an unmet need for additional therapeutic targets that may lead to the cure of most patients diagnosed with CML. A growing body of evidence has suggested a role for both IRF4 and IRF8 in the pathogenesis of CML. Furthermore, IRF1 is consistently deleted at one or both alleles in patients with leukemia and myelodysplasia. Finally, we have recently demonstrated that IRF5 is a target of BCR-ABL kinase activity and reduces CML cell proliferation. In this article, we provide an update on the current knowledge of the role of the IRFs in CML.
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Manzella Livia, Tirrò Elena, Pennisi Stella Maria, Massimino Michele, Stella Stefania, Romano Chiara, Vitale Rita Silvia and Vigneri Paolo, Roles of Interferon Regulatory Factors in Chronic Myeloid Leukemia, Current Cancer Drug Targets 2016; 16 (7) . https://dx.doi.org/10.2174/1568009616666160105105857
DOI https://dx.doi.org/10.2174/1568009616666160105105857 |
Print ISSN 1568-0096 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-5576 |
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