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ABL2 suppresses FLT3-ITD-induced cell proliferation through negative regulation of AKT signaling

Kazi, Julhash U (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Rupar, Kaja (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Marhäll, Alissa (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
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Moharram, Sausan A (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Khanum, Fatima (author)
Lund University
Shah, Kinjal (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Mohiuddin, Gazi (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Mysore Nagaraj, Sachin Raj (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Sun, Jianmin (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research,Ningxia Medical University
Chougule, Rohit A (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research
Rönnstrand, Lars (author)
Lund University,Lunds universitet,Avdelningen för translationell cancerforskning,Institutionen för laboratoriemedicin,Medicinska fakulteten,Stamcellscentrum (SCC),Avdelningen för stamcellsforskning,Division of Translational Cancer Research,Department of Laboratory Medicine,Faculty of Medicine,Stem Cell Center,Division of stem cell research,Skåne University Hospital
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 (creator_code:org_t)
2017-01-10
2017
English 9 s.
In: Oncotarget. - : Impact Journals, LLC. - 1949-2553. ; 8:7, s. 12194-12202
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The type III receptor tyrosine kinase FLT3 is one of the most commonly mutated oncogenes in acute myeloid leukemia (AML). Inhibition of mutated FLT3 in combination with chemotherapy has displayed promising results in clinical trials. However, one of the major obstacles in targeting FLT3 is the development of resistant disease due to secondary mutations in FLT3 that lead to relapse. FLT3 and its oncogenic mutants signal through associating proteins that activate downstream signaling. Thus, targeting proteins that interact with FLT3 and their downstream signaling cascades can be an alternative approach to treat FLT3-dependent AML. We used an SH2 domain array screen to identify novel FLT3 interacting proteins and identified ABL2 as a potent interacting partner of FLT3. To understand the role of ABL2 in FLT3-mediated biological and cellular events, we used the murine pro-B cell line Ba/F3 as a model system. Overexpression of ABL2 in Ba/F3 cells expressing an oncogenic mutant of FLT3 (FLT3-ITD) resulted in partial inhibition of FLT3-ITD-dependent cell proliferation and colony formation. ABL2 expression did not alter the kinase activity of FLT3, its ubiquitination or its stability. However, it partially blocked FLT3-induced AKT phosphorylation without affecting ERK1/2 and p38 activation. Taken together our data suggest that ABL2 acts as negative regulator of signaling downstream of FLT3.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinsk bioteknologi -- Medicinsk bioteknologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Medical Biotechnology -- Medical Biotechnology (hsv//eng)

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