Cited by 188Acute Myeloid Leukemia ResearchHematopoietic Stem Cell TransplantationCancer-related Molecular Pathways

Role of Casein Kinase 1A1 in the Biology and Targeted Therapy of del(5q) MDS

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Schneider, Rebekka K., Ademà, Vera, Heckl, Dirk, Järås, Marcus, Mallo, Mar, Lord, Allegra M., Chu, Lisa P., McConkey, Marie E. +5 more·2014·Cancer Cell

Abstract

The casein kinase 1A1 gene (CSNK1A1) is a putative tumor suppressor gene located in the common deleted region for del(5q) myelodysplastic syndrome (MDS). We generated a murine model with conditional inactivation of Csnk1a1 and found that Csnk1a1 haploinsufficiency induces hematopoietic stem cell expansion and a competitive repopulation advantage, whereas homozygous deletion induces hematopoietic stem cell failure. Based on this finding, we found that heterozygous inactivation of Csnk1a1 sensitizes cells to a CSNK1 inhibitor relative to cells with two intact alleles. In addition, we identified recurrent somatic mutations in CSNK1A1 on the nondeleted allele of patients with del(5q) MDS. These studies demonstrate that CSNK1A1 plays a central role in the biology of del(5q) MDS and is a promising therapeutic target.

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Crossref · 10.1016/j.ccr.2014.08.001

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  • CK1α is required for hematopoietic stem cell survival, and heterozygous deletion of its gene in del(5q) MDS creates a therapeutic window to eliminate the malignant stem cell clone.

    “CK1α is essential for the survival of hematopoietic stem cells, and heterozygous deletion of its gene in del(5q) myelodysplastic syndrome provides a therapeutic window for eliminating the malignant stem cell clone (10).”

    From Defining the human C2H2 zinc finger degrome targeted by thalidomide analogs through CRBN (2018) · cites this paper as [10]

    The Results section, “Csnk1a1 is required for adult murine hematopoiesis” (page unavailable), reports that complete Csnk1a1 deletion sharply reduced hematopoietic stem cells, indicating a requirement for their survival. The Discussion and the Results section on CK1 inhibition describe a therapeutic window for targeting del(5q) haploinsufficient cells, but the experiments show selective loss of viability in cultured cells, not elimination of the malignant stem cell clone. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Lenalidomide-induced degradation of the remaining CK1α mimics biallelic loss of CSNK1A1, which triggers p53 activation, enhances apoptosis and leads to clonal arrest of the 5q-deleted population, ultimately driving disease regression.

    “However, lenalidomide-induced degradation of the remaining cK1α mimics biallelic loss of CSNK1A1 which triggers p53 activation, enhances apoptosis and leads to clonal arrest of the 5q-deleted population which ultimately drives disease regression (wei et al. 2009;Schneider et al. 2014;Krönke et al. 2015).”

    From From serendipity to strategy: molecular glue degraders in cancer therapeutics (2025) · cites this paper as Schneider et al. 2014

    The Results section on adult murine hematopoiesis reports that complete Csnk1a1 deletion activated p53 and increased apoptosis; the CK1-inhibition Results section reports selective depletion of haploinsufficient cells with D4476. The paper does not establish that lenalidomide degrades CK1α or that this mechanism causes clonal arrest and disease regression. The indexed passages provide no page numbers. (LLM, conf=0.89)

    Experimental — accuracy not yet measured
  • Mutations in TP53 lead to resistance to lenalidomide in patients with MDS.

    “Accordingly, mutations in TP53 lead to resistance to lenalidomide in patients with MDS97,98 (FIG. 3).”
  • Resistance to lenalidomide and disease progression are associated with an increased frequency of TP53 mutations in patients with del(5q) MDS.

    “Consistent with these experimental findings, resistance to lenalidomide and disease progression are associated with an increased frequency of TP53 mutations in patients with del(5q) MDS98,161,162.”

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Authors
Schneider, R. K., Ademà, V., Heckl, D., Järås, M., Mallo, M., Lord, A. M., Chu, L. P., McConkey, M. E., Kramann, R., Mullally, A., Bejar, R., Solé, F., & Ebert, B. L.
Affiliations
  • Brigham and Women's Hospital (US)
  • Universitat Autònoma de Barcelona (ES)
  • University of California San Diego (US)
  • Broad Institute (US)
Corresponding author
Ebert, Benjamin L.
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2014-10
Volume
26
Issue
4
Pages
509-520
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2081870738
Cited by
188
References
52
Citations by year
2026: 11 · 2025: 13 · 2024: 10 · 2023: 5 · 2022: 16 · 2021: 18 · 2020: 16 · 2019: 13 · 2018: 20 · 2017: 24 · 2016: 22 · 2015: 19 · 2014: 1
FWCI
15.60
Type
journal article
Language
en
Open access
Locations
  • Cancer Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • Leukemia and Lymphoma Society
  • Deutsche Forschungsgemeinschaft
  • Deutsche Krebshilfe
  • Harvard Stem Cell Institute
  • National Heart, Lung, and Blood Institute (R01HL082945)
  • National Cancer Institute (P30CA023100, P01CA066996)
  • National Institute of Diabetes and Digestive and Kidney Diseases (K08DK091360)
Topics
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
CSNK1A1, del(5q) myelodysplastic syndrome, tumor suppressor, haploinsufficiency, hematopoietic stem cells, competitive repopulation, conditional knockout mouse model, somatic mutations, therapeutic target
MeSH terms
Aged, Animals, Base Sequence, Chromosome Deletion, Chromosomes, Human, Pair 5, Female, Flow Cytometry, Humans, Male, Mutation, Myelodysplastic Syndromes, Polymerase Chain Reaction, DNA Primers, Casein Kinase I, Mice, Young Adult, Haploinsufficiency

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