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https://www.readbyqxmd.com/read/28220884/exploration-of-the-role-of-gene-mutations-in-myelodysplastic-syndromes-through-a-sequencing-design-involving-a-small-number-of-target-genes
#1
Feng Xu, Ling-Yun Wu, Qi He, Dong Wu, Zheng Zhang, Lu-Xi Song, You-Shan Zhao, Ji-Ying Su, Li-Yu Zhou, Juan Guo, Chun-Kang Chang, Xiao Li
Novel sequencing designs are necessary to supplement the recognized knowledge of myelodysplastic syndrome (MDS)-related genomic alterations. In this study, we sequenced 28 target genes in 320 Chinese MDS patients but obtained 77.2% of recall factors and 82.8% of genetic abnormalities (including karyotype abnormalities). In addition to known relationships among mutations, some specific chromosomal abnormalities were found to link to specific gene mutations. Trisomy 8 tended to be linked to U2AF1 and ZRSR2 mutations, and 20q- exhibited higher SRSF2/WT1 and U2AF1 mutation frequency...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28213513/runx1-cooperates-with-flt3-itd-to-induce-leukemia
#2
Kira Behrens, Katrin Maul, Nilgün Tekin, Neele Kriebitzsch, Daniela Indenbirken, Vladimir Prassolov, Ursula Müller, Hubert Serve, Jörg Cammenga, Carol Stocking
Acute myeloid leukemia (AML) is induced by the cooperative action of deregulated genes that perturb self-renewal, proliferation, and differentiation. Internal tandem duplications (ITDs) in the FLT3 receptor tyrosine kinase are common mutations in AML, confer poor prognosis, and stimulate myeloproliferation. AML patient samples with FLT3-ITD express high levels of RUNX1, a transcription factor with known tumor-suppressor function. In this study, to understand this paradox, we investigated the impact of RUNX1 and FLT3-ITD coexpression...
February 17, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28202519/correlates-of-prenatal-and-early-life-tobacco-smoke-exposure-and-frequency-of-common-gene-deletions-in-childhood-acute-lymphoblastic-leukemia
#3
Adam J de Smith, Maneet Kaur, Semira Gonseth, Alyson A Endicott, Steve Selvin, Luoping Zhang, Ritu Roy, Xiaorong Shao, Helen M Hansen, Alice Y Kang, Kyle M Walsh, Gary V Dahl, Roberta McKean-Cowdin, Catherine Metayer, Joseph L Wiemels
Tobacco smoke exposure has been associated with risk of childhood acute lymphoblastic leukemia (ALL). Understanding the relationship between tobacco exposures and specific mutations may yield etiologic insights. We carried out a case-only analysis to explore whether prenatal and early-life tobacco smoke exposure influences the formation of leukemogenic genomic deletions. Somatic copy-number of 8 genes frequently deleted in ALL (CDKN2A, ETV6, IKZF1, PAX5, RB1, BTG1, PAR1 region, and EBF1) was assessed in 559 pre-treatment tumor samples from the California Childhood Leukemia Study...
February 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28197208/molecular-mutations-and-their-cooccurrences-in-cytogenetically-normal-acute-myeloid-leukemia
#4
REVIEW
Mengning Wang, Chuanwei Yang, Le Zhang, Dale G Schaar
Adult acute myeloid leukemia (AML) clinically is a disparate disease that requires intensive treatments ranging from chemotherapy alone to allogeneic hematopoietic cell transplantation (allo-HCT). Historically, cytogenetic analysis has been a useful prognostic tool to classify patients into favorable, intermediate, and unfavorable prognostic risk groups. However, the intermediate-risk group, consisting predominantly of cytogenetically normal AML (CN-AML), itself exhibits diverse clinical outcomes and requires further characterization to allow for more optimal treatment decision-making...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28191887/the-creatine-kinase-pathway-is-a-metabolic-vulnerability-in-evi1-positive-acute-myeloid-leukemia
#5
Nina Fenouille, Christopher F Bassil, Issam Ben-Sahra, Lina Benajiba, Gabriela Alexe, Azucena Ramos, Yana Pikman, Amy S Conway, Michael R Burgess, Qing Li, Frédéric Luciano, Patrick Auberger, Ilene Galinsky, Daniel J DeAngelo, Richard M Stone, Yi Zhang, Archibald S Perkins, Kevin Shannon, Michael T Hemann, Alexandre Puissant, Kimberly Stegmaier
Expression of the MECOM (also known as EVI1) proto-oncogene is deregulated by chromosomal translocations in some cases of acute myeloid leukemia (AML) and is associated with poor clinical outcome. Here, through transcriptomic and metabolomic profiling of hematopoietic cells, we reveal that EVI1 overexpression alters cellular metabolism. A screen using pooled short hairpin RNAs (shRNAs) identified the ATP-buffering, mitochondrial creatine kinase CKMT1 as necessary for survival of EVI1-expressing cells in subjects with EVI1-positive AML...
February 13, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28190862/acute-myeloid-leukemia-with-t-3-21-q13-q22-a-novel-simple-variant-of-the-21q22-runx1-translocation
#6
Yuka Tsuruoka, Hirotaka Sakai, Akiko Uchida, Yu Uemura, Kazuyuki Sato, Satoshi Yokoi, Yuji Nishio, Manabu Matsunawa, Yoshinori Suzuki, Yasushi Isobe, Masayuki Kato, Naoto Tomita, Yasuyuki Inoue, Ikuo Miura
A 69-year-old man diagnosed with leukocytosis was referred to our hospital in July 201X. The patient was diagnosed as having a myelodysplastic/myeloproliferative neoplasm. However, he presented with leukemia 2 months later. Chromosomal analysis of a bone marrow sample documented that this patient had a normal karyotype. The patient was successfully treated with idarubicin and cytarabine, and he underwent three courses of consolidation therapy. However, he suffered a relapse in May of the following year. A cytogenetic analysis revealed the presence of a t (3;21) (q13;q22) translocation, and fluorescence in situ hybridization of metaphase spreads detected three signals corresponding to the runt related transcription factor 1 (RUNX1) on the derivative chromosomes 3 and 21, besides the normal chromosome 21...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28181366/molecular-phenotype-and-bleeding-risks-of-an-inherited-platelet-disorder-in-a-family-with-a-runx1-frameshift-mutation
#7
M S Badin, J K Iyer, M Chong, L Graf, G E Rivard, J S Waye, A D Paterson, G Pare, C P M Hayward
INTRODUCTION: Inherited defects in RUNX1 are important causes of platelet function disorders. AIM: Our goals were to evaluate RUNX1-related platelet disorders among individuals evaluated for uncharacterized, inherited platelet function disorders and test a proof of concept that bleeding risks could be quantitatively estimated for typical families with an inherited platelet function disorder. METHODS: Index cases with an uncharacterized inherited platelet function disorder were subjected to exome sequencing with confirmation of RUNX1 mutations by Sanger sequencing...
February 8, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28179279/role-of-runx1-in-hematological-malignancies
#8
Raman Sood, Yasuhiko Kamikubo, Paul Liu
RUNX1 is a member of the core binding factor family of transcription factors and is indispensable for the establishment of definitive hematopoiesis in vertebrates. RUNX1 is one of the most frequently mutated genes in a variety of hematological malignancies. Germline mutations in RUNX1 cause familial platelet disorder with associated myeloid malignancies (FPDMM). Somatic mutations and chromosomal rearrangements involving RUNX1 are frequently observed in myelodysplastic syndrome (MDS) and leukemias of myeloid and lymphoid lineages, i...
February 8, 2017: Blood
https://www.readbyqxmd.com/read/28179276/runx-transcription-factors-in-the-development-and-function-of-the-definitive-hematopoietic-system
#9
Marella de Bruijn, Elaine Dzierzak
The Runx family of transcription factors (Runx1, 2 and 3) are highly conserved and encode proteins involved in a variety of cell lineages, including blood and blood-related cell lineages during developmental and adult stages of life. They perform activation and repressive functions in the regulation of gene expression. The requirement for Runx1 in the normal hematopoietic development, and its dysregulation through chromosomal translocations and loss-of-function mutations as found in acute myeloid leukemias highlights the importance of this transcription factor in the healthy blood system...
February 8, 2017: Blood
https://www.readbyqxmd.com/read/28170196/lacrimal-gland-repair-using-progenitor-cells
#10
Anastasia Gromova, Dmitry A Voronov, Miya Yoshida, Suharika Thotakura, Robyn Meech, Darlene A Dartt, Helen P Makarenkova
In humans, the lacrimal gland (LG) is the primary contributor to the aqueous layer of the tear film. Production of tears in insufficient quantity or of inadequate quality may lead to aqueous-deficiency dry eye (ADDE). Currently there is no cure for ADDE. The development of strategies to reliably isolate LG stem/progenitor cells from the LG tissue brings great promise for the design of cell replacement therapies for patients with ADDE. We analyzed the therapeutic potential of epithelial progenitor cells (EPCPs) isolated from adult wild-type mouse LGs by transplanting them into the LGs of TSP -1(-/-) mice, which represent a novel mouse model for ADDE...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28166825/the-dynamics-of-runx1-runx1t1-transcript-levels-after-allogeneic-hematopoietic-stem-cell-transplantation-predict-relapse-in-patients-with-t-8-21-acute-myeloid-leukemia
#11
Ya-Zhen Qin, Yu Wang, Lan-Ping Xu, Xiao-Hui Zhang, Huan Chen, Wei Han, Yu-Hong Chen, Feng-Rong Wang, Jing-Zhi Wang, Yao Chen, Xiao-Dong Mo, Xiao-Su Zhao, Ying-Jun Chang, Kai-Yan Liu, Xiao-Jun Huang
BACKGROUND: The optimal monitoring schedules and cutoff minimal residual disease (MRD) levels for the accurate prediction of relapse at all time points after allogeneic hematopoietic stem cell transplantation (allo-HSCT) remain unclear in patients with t(8;21) acute myeloid leukemia (AML). METHODS: RUNX1-RUNX1T1 transcript levels were measured in bone marrow samples collected from 208 patients at scheduled time points after transplantation (1530 samples in total)...
February 6, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28165726/synthetic-protein-mimics-for-functional-protein-delivery
#12
Arife Ozgul Tezgel, Paejonette Jacobs, Coralie M Backlund, Janice C Telfer, Gregory N Tew
The use of proteins as biological tools and therapeutic agents is limited due to the fact that proteins do not effectively cross the plasma membrane of cells. Here, we report a novel class of protein transporter molecules based on protein transduction domain mimics (PTDMs) synthesized via ring opening metathesis polymerization (ROMP). The PTDMs reported here were specifically inspired by amphiphilic peptides known to deliver functional proteins into cells via non-covalent interactions between the peptide and cargo...
February 6, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28154087/suppression-of-runx1-eto-oncogenic-activity-by-a-small-molecule-inhibitor-of-tetramerization
#13
Julia Schanda, Chun-Wei Lee, Katharina Wohlan, Uta Müller-Kuller, Hana Kunkel, Isabell Quagliano-Lo Coco, Stefan Stein, Alexander Metz, Joachim Koch, Jörn Lausen, Uwe Platzbecker, Hind Medyouf, Holger Gohlke, Michael Heuser, Matthias Eder, Manuel Grez, Michaela Scherr, Christian Wichmann
No abstract text is available yet for this article.
February 2, 2017: Haematologica
https://www.readbyqxmd.com/read/28129329/space-time-clustering-of-childhood-leukemia-evidence-of-an-association-with-etv6-runx1-tel-aml1-fusion
#14
Christian Kreis, Judith E Lupatsch, Felix Niggli, Matthias Egger, Claudia E Kuehni, Ben D Spycher
BACKGROUND: Many studies have observed space-time clustering of childhood leukemia (CL) yet few have attempted to elicit etiological clues from such clustering. We recently reported space-time clustering of CL around birth, and now aim to generate etiological hypotheses by comparing clustered and nonclustered cases. We also investigated whether the clustering resulted from many small aggregations of cases or from a few larger clusters. METHODS: We identified cases of persons born and diagnosed between 1985 and 2014 at age 0-15 years from the Swiss Childhood Cancer Registry...
2017: PloS One
https://www.readbyqxmd.com/read/28114278/mll-af9-and-mll-af4-oncofusion-proteins-bind-a-distinct-enhancer-repertoire-and-target-the-runx1-program-in-11q23-acute-myeloid-leukemia
#15
K H M Prange, A Mandoli, T Kuznetsova, S-Y Wang, A M Sotoca, A E Marneth, B A van der Reijden, H G Stunnenberg, J H A Martens
In 11q23 leukemias, the N-terminal part of the mixed lineage leukemia (MLL) gene is fused to >60 different partner genes. In order to define a core set of MLL rearranged targets, we investigated the genome-wide binding of the MLL-AF9 and MLL-AF4 fusion proteins and associated epigenetic signatures in acute myeloid leukemia (AML) cell lines THP-1 and MV4-11. We uncovered both common as well as specific MLL-AF9 and MLL-AF4 target genes, which were all marked by H3K79me2, H3K27ac and H3K4me3. Apart from promoter binding, we also identified MLL-AF9 and MLL-AF4 binding at specific subsets of non-overlapping active distal regulatory elements...
January 23, 2017: Oncogene
https://www.readbyqxmd.com/read/28111278/human-induced-pluripotent-stem-cell-derived-macrophages-share-ontogeny-with-myb-independent-tissue-resident-macrophages
#16
Julian Buchrieser, William James, Michael D Moore
Tissue-resident macrophages, such as microglia, Kupffer cells, and Langerhans cells, derive from Myb-independent yolk sac (YS) progenitors generated before the emergence of hematopoietic stem cells (HSCs). Myb-independent YS-derived resident macrophages self-renew locally, independently of circulating monocytes and HSCs. In contrast, adult blood monocytes, as well as infiltrating, gut, and dermal macrophages, derive from Myb-dependent HSCs. These findings are derived from the mouse, using gene knockouts and lineage tracing, but their applicability to human development has not been formally demonstrated...
February 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28096094/platelet-cd34-expression-and-%C3%AE-%C3%AE-granule-abnormalities-in-gfi1b-and-runx1-related-familial-bleeding-disorders
#17
Anna E Marneth, Waander L van Heerde, Konnie M Hebeda, Britta A P Laros-van Gorkom, Wideke Barteling, Brigith Willemsen, Aniek O de Graaf, Annet Simons, Joop H Jansen, Frank Preijers, Marjolijn C Jongmans, Bert A van der Reijden
No abstract text is available yet for this article.
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28093006/blood-malignancies-presenting-with-mutations-at-equivalent-residues-in-runx1-2-suggest-a-common-leukemogenic-pathway
#18
Michele Callea, Fabiana Fattori, Enrico Silvio Bertini, Francisco Cammarata-Scalisi, Francesco Callea, Emanuele Bellacchio
No abstract text is available yet for this article.
January 16, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28092997/the-t-8-21-fusion-protein-runx1-eto-downregulates-pkm2-in-acute-myeloid-leukemia-cells
#19
Jin-Song Yan, Yi-Dong Li, Su-Hui Liu, Qian-Qian Yin, Xin-Yi Liu, Li Xia, Ying Lu
No abstract text is available yet for this article.
January 16, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28075530/dysregulation-of-pldn-pallidin-is-a-mechanism-for-platelet-dense-granule-deficiency-in-runx1-haplodeficiency
#20
G F Mao, L E Goldfinger, D C Fan, M P Lambert, G Jalagadugula, R Freishtat, A K Rao
BACKGROUND: Inherited RUNX1 haplodeficiency is associated with thrombocytopenia and platelet dysfunction. Dense granule (DG) deficiency is reported in patients with RUNX1 haplodeficiency, but the molecular mechanisms are unknown. Platelet mRNA expression profiling in a patient previously reported by us with a RUNX1 mutation and platelet dysfunction showed decreased expression of PLDN (BLOC1S6), which encodes for pallidin, a subunit of BLOC-1 (biogenesis of lysosome-related organelles complex-1) involved in granule biogenesis...
January 11, 2017: Journal of Thrombosis and Haemostasis: JTH
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