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NUP98-fusion transcripts characterize different biological entities within acute myeloid leukemia: a report from the AIEOP-AML group.
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Chimeric NUP98-NSD1 fusion transcripts are associated with acute myeloid leukemia.
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NHA9 (NUP98-HOXA9 fusion protein) deregulates the expression of key leukemic genes, including MEIS1-HOXA9-PBX3 complex, through the enhancer binding and the direct interaction of the fusion protein with HDAC and p300 transcriptional regulators
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human NUP98-IQCG fusion protein could induce fatal and transplantable acute myelomonocytic leukemia in a mouse model
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Importantly, binding of Nup98 to DHX9 stimulates the ATPase activity of DHX9, and a transcriptional reporter assay suggests Nup98 supports DHX9-stimulated transcription.
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The second FG repeat domain of the NUP98 moiety of the NUP98-HOXA9 fusion protein is important for its cell immortalization and leukemogenesis activities. NUP98-HOXA9 interacts with mixed lineage leukemia (MLL) via this FG repeat domain and that, in MLL-null mice, NUP98-HOXA9-induced cell immortalization and leukemogenesis are severely inhibited.
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DYNLT1 interacts with nucleoporins and plays a role in the dysregulation of gene expression and induction of hematopoietic cell proliferation by the leukemogenic nucleoporin fusion, NUP98-HOXA9
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the mutation order in the NUP98-rearranged pediatric AML begins with the NUP98 rearrangement leading to epigenetic dysregulations then followed by mutations of critical hematopoietic transcription factors and finally, activation of the FLT3 signaling pathway.
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These results provide novel insight into the mechanisms underlying the aberrant capability of NUP98 oncoproteins to interact with APC/C(Cdc20) and to interfere with its function.
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Our results suggest that NA10HD increases the number of gamma-globin-transduced HSCs that engraft, leading to an elevated number of fetal hemoglobin-containing red cells.
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NUP98-HOXA9 ability to induce blood cell expansion is evolutionarily conserved.
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The study demonstrated the association of NUP98-IQCG with CRM1, and found that NUP98-IQCG expression inhibits the CRM1-mediated nuclear export of p65 and enhances the transcriptional activity of nuclear factor-kappaB. Moreover, IQCG could be entrapped in the nucleus by NUP98-IQCG, and the fusion protein interacts with calmodulin via the IQ motif in a calcium-independent manner.
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The results indicate that highly selective targeting of Nup98-fusion proteins to Hox cluster regions via prebound Crm1 induces the formation of higher order chromatin structures that causes aberrant Hox gene regulation.
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Despite the difference in localization, all tested Nup98 chimera provoked morphological alterations in the nuclear envelope (NE), in particular affecting the nuclear lamina and the lamina-associated polypeptide 2alpha.
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NUP98-HOXA9 expression induces myeloid disease.
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Overall, these results demonstrate a novel role for FOXK1 in regulating the expression of antiviral genes via Nup98, from insects to humans.
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deregulation of the retinoid/rexinoid signaling pathway has a major role and may represent a potential therapeutic target for NUP98-RARG-mediated transformation
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Acute myeloid leukemia can be reproduced in mice by transducing mouse mesenchymal stem cells with the human NUP98-NSD1 fusion and the FLT3-ITD mutated constracts.
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These data reveal an emergent Kap-centric barrier mechanism that may underlie mechanistic and kinetic control in the nuclear pore complex.
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Vesiculoviral matrix (M) protein occupies nucleic acid binding site at nucleoporin pair (Rae1 * Nup98).
