Cited by 46Hematopoietic Stem Cell TransplantationBlood disorders and treatmentsAcute Myeloid Leukemia Research

The retinoblastoma tumor suppressor is a critical intrinsic regulator for hematopoietic stem and progenitor cells under stress

Open access
Daria, Deidre, Filippi, Marie-Dominique, Knudsen, Erik S., Faccio, Roberta, Li, Zhixiong, Kalfa, Theodosia, Geiger, Hartmut·2008·Blood

Abstract

The retinoblastoma tumor suppressor protein (RB) plays important roles in the control of the cell division cycle. It is estimated that RB is dysfunctional/inactivated in up to 40% of human leukemias. The consequences of loss of RB on hematopoietic stem and progenitor cell (HSPC) function in vivo are incompletely understood. Here, we report that mice genetically deficient in Rb in all hematopoietic cells (Vav-Cre Rb knockout [KO] animals) showed altered contribution of distinct hematopoietic cell lineages to peripheral blood, bone marrow, and spleen; significantly increased extramedullary hematopoiesis in the spleen; and a 2-fold increase in the frequency of hematopoietic progenitor cells in peripheral blood. Upon competitive transplantation, HSPCs from Vav-Cre Rb KO mice contributed with an at least 4- to 6-fold less efficiency to hematopoiesis compared with control cells. HSPCs deficient in Rb presented with impaired cell-cycle exit upon stress-induced proliferation, which correlated with impaired function. In summary, Rb is critical for hematopoietic stem and progenitor cell function, localization, and differentiation.

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Crossref · 10.1182/blood-2007-02-071746

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Authors
Daria, D., Filippi, M.-D., Knudsen, E. S., Faccio, R., Li, Z., Kalfa, T., & Geiger, H.
Affiliations
  • Cincinnati Children's Hospital Medical Center (US)
  • University of Cincinnati (US)
  • Washington University in St. Louis (US)
  • Medizinische Hochschule Hannover (DE)
Venue
Blood
Published
2008-02-15
Volume
111
Issue
4
Pages
1894-1902
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2001603811
Cited by
46
References
43
Citations by year
2022: 2 · 2021: 5 · 2020: 3 · 2017: 1 · 2016: 1 · 2015: 3 · 2014: 3 · 2013: 3 · 2012: 11
FWCI
1.92
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Heart, Lung, and Blood Institute (R01HL076604)
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
Keywords
retinoblastoma protein, hematopoietic stem and progenitor cells, hematopoiesis, extramedullary hematopoiesis, spleen, cell cycle exit, competitive transplantation, leukemia, hematopoietic differentiation
MeSH terms
Animals, Bone Marrow Cells, Cell Division, Crosses, Genetic, Hematopoietic Stem Cells, Spleen, Stress, Physiological, Retinoblastoma Protein, Mice, Knockout, Mice

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