Selin Akan - Academia.edu (original) (raw)

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Papers by Selin Akan

Research paper thumbnail of A C/ebpα isoform specific differentiation program in immortalized myelocytes

Leukemia

The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of m... more The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of myeloid differentiation that is expressed as long (p42) and short (p30) isoform. Mutations within the CEBPA gene selectively deleting p42 are frequent in human acute myeloid leukemia. Here we investigated the individual genomics and transcriptomics of p42 and p30. Both proteins bound to identical sites across the genome. For most targets, they induced a highly similar transcriptional response with the exception of a few isoform specific genes. Amongst those we identified early growth response 1 (Egr1) and tribbles1 (Trib1) as key targets selectively induced by p42 that are also underrepresented in CEBPA-mutated AML. Egr1 executed a program of myeloid differentiation and growth arrest. Oppositely, Trib1 established a negative feedback loop through activation of Erk1/2 kinase thus placing differentiation under control of signaling. Unexpectedly, differentiation elicited either by removal of...

Research paper thumbnail of A C/ebpα isoform-specific differentiation program in primary myelocytes

The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of m... more The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of myeloid differentiation that is expressed as long (p42) and short (p30) isoform. Mutations within theCEBPAgene selectively deleting p42 are frequent in human acute myeloid leukemia. Here we investigated the individual genomics and transcriptomics of p42 and p30. Both proteins bound to identical sites across the genome. For most targets, they induced a highly similar transcriptional response with the exception of a few isoform-specific genes. Amongst those we identified early growth response 1 (Egr1) and tribbles 1 (Trib1) as key targets selectively induced by p42 that are also underrepresented inCEBPA-mutated AML. Egr1 executed a program of myeloid differentiation and growth arrest. Oppositely, Trib1 established a negative feedback loop through activation of Erk1/2 kinase thus placing differentiation under control of signaling. Unexpectedly, differentiation elicited either by removal of a...

Research paper thumbnail of B lenfositlerinin cd4+t hücre yanıtına olan negatif etkilerinin moleküler mekanizmalarının incelenmesi:foxp3 pd-1/pd-l1 eş-uyaran sisteminin olası rolleri

İstanbul Medipol Üniversitesi Sağlık Bilimleri Enstitüsü, 2018

Research paper thumbnail of A C/ebpα isoform specific differentiation program in immortalized myelocytes

Leukemia

The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of m... more The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of myeloid differentiation that is expressed as long (p42) and short (p30) isoform. Mutations within the CEBPA gene selectively deleting p42 are frequent in human acute myeloid leukemia. Here we investigated the individual genomics and transcriptomics of p42 and p30. Both proteins bound to identical sites across the genome. For most targets, they induced a highly similar transcriptional response with the exception of a few isoform specific genes. Amongst those we identified early growth response 1 (Egr1) and tribbles1 (Trib1) as key targets selectively induced by p42 that are also underrepresented in CEBPA-mutated AML. Egr1 executed a program of myeloid differentiation and growth arrest. Oppositely, Trib1 established a negative feedback loop through activation of Erk1/2 kinase thus placing differentiation under control of signaling. Unexpectedly, differentiation elicited either by removal of...

Research paper thumbnail of A C/ebpα isoform-specific differentiation program in primary myelocytes

The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of m... more The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of myeloid differentiation that is expressed as long (p42) and short (p30) isoform. Mutations within theCEBPAgene selectively deleting p42 are frequent in human acute myeloid leukemia. Here we investigated the individual genomics and transcriptomics of p42 and p30. Both proteins bound to identical sites across the genome. For most targets, they induced a highly similar transcriptional response with the exception of a few isoform-specific genes. Amongst those we identified early growth response 1 (Egr1) and tribbles 1 (Trib1) as key targets selectively induced by p42 that are also underrepresented inCEBPA-mutated AML. Egr1 executed a program of myeloid differentiation and growth arrest. Oppositely, Trib1 established a negative feedback loop through activation of Erk1/2 kinase thus placing differentiation under control of signaling. Unexpectedly, differentiation elicited either by removal of a...

Research paper thumbnail of B lenfositlerinin cd4+t hücre yanıtına olan negatif etkilerinin moleküler mekanizmalarının incelenmesi:foxp3 pd-1/pd-l1 eş-uyaran sisteminin olası rolleri

İstanbul Medipol Üniversitesi Sağlık Bilimleri Enstitüsü, 2018

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