Cited by 380RNA Research and SplicingAcute Myeloid Leukemia ResearchHematopoietic Stem Cell Transplantation

Physiologic Expression of Sf3b1(K700E) Causes Impaired Erythropoiesis, Aberrant Splicing, and Sensitivity to Therapeutic Spliceosome Modulation

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Obeng, Esther A., Chappell, Ryan J., Seiler, Michael, Chen, Michelle C., Campagna, Dean R., Schmidt, Paul J., Schneider, Rebekka K., Lord, Allegra M. +12 more·2016·Cancer Cell

Abstract

More than 80% of patients with the refractory anemia with ring sideroblasts subtype of myelodysplastic syndrome (MDS) have mutations in Splicing Factor 3B, Subunit 1 (SF3B1). We generated a conditional knockin mouse model of the most common SF3B1 mutation, Sf3b1(K700E). Sf3b1(K700E) mice develop macrocytic anemia due to a terminal erythroid maturation defect, erythroid dysplasia, and long-term hematopoietic stem cell (LT-HSC) expansion. Sf3b1(K700E) myeloid progenitors and SF3B1-mutant MDS patient samples demonstrate aberrant 3' splice-site selection associated with increased nonsense-mediated decay. Tet2 loss cooperates with Sf3b1(K700E) to cause a more severe erythroid and LT-HSC phenotype. Furthermore, the spliceosome modulator, E7017, selectively kills SF3B1(K700E)-expressing cells. Thus, SF3B1(K700E) expression reflects the phenotype of the mutation in MDS and may be a therapeutic target in MDS.

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Crossref · 10.1016/j.ccell.2016.08.006

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  • HSCs from mice mutant for Sf3b1, Srsf2, and U2af1 have a competitive disadvantage in vivo, unlike the clonal expansion observed in humans with these mutations.

    “HSCs from mice mutant for these genes, Sf3b1 56, Srsf2 57, and U2af1 58, have a competitive disadvantage in vivo, unlike the clonal expansion observed in humans with these mutations.”

    From Clonal hematopoiesis in human aging and disease (2019) · cites this paper as [56]

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  1. Keyhani M Giuliani D Giuliani ER Morse BS 1974b Erythropoiesis in pyridoxine deficient mice Proc Soc Exp Biol Med 146 114 119 4827241

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Authors
Obeng, E. A., Chappell, R. J., Seiler, M., Chen, M. C., Campagna, D. R., Schmidt, P. J., Schneider, R. K., Lord, A. M., Wang, L., Gambe, R. G., McConkey, M. E., Ali, A. M., Raza, A., Yu, L., Buonamici, S., Smith, P. G., Mullally, A., Wu, C. J., Fleming, M. D., & Ebert, B. L.
Affiliations
  • Brigham and Women's Hospital (US)
  • Cambridge Intellectual Property (United Kingdom) (GB)
  • Boston Children's Hospital (US)
  • Harvard University (US)
  • Columbia University Irving Medical Center (US)
  • Broad Institute (US)
Corresponding author
Ebert, Benjamin L.
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2016-09
Volume
30
Issue
3
Pages
404-417
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2520178460
Cited by
380
References
55
Citations by year
2026: 17 · 2025: 27 · 2024: 33 · 2023: 46 · 2022: 39 · 2021: 51 · 2020: 52 · 2019: 44 · 2018: 38 · 2017: 27 · 2016: 6
FWCI
19.93
Type
journal article
Language
en
Open access
Locations
  • Cancer Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (R01 HL082945, R24 DK099808)
  • American Society of Hematology
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
Keywords
SF3B1, refractory anemia with ringed sideroblasts, myelodysplastic syndrome, erythropoiesis, aberrant splicing, 3' splice site selection, nonsense-mediated mRNA decay, TET2, long-term hematopoietic stem cells, macrocytic anemia, therapeutic target
MeSH terms
RNA Splicing Factors, Animals, DNA-Binding Proteins, Erythropoiesis, Hematopoietic Stem Cells, Humans, Mice, Transgenic, Myelodysplastic Syndromes, Phosphoproteins, Proto-Oncogene Proteins, RNA Splicing, Point Mutation, Spliceosomes, Dioxygenases, Mice

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