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Haematopoietic stem cells require a highly regulated protein synthesis rate

Author

Listed:
  • Robert A. J. Signer

    (Howard Hughes Medical Institute, Children’s Research Institute, University of Texas Southwestern Medical Center)

  • Jeffrey A. Magee

    (Howard Hughes Medical Institute, Children’s Research Institute, University of Texas Southwestern Medical Center)

  • Adrian Salic

    (Harvard Medical School)

  • Sean J. Morrison

    (Howard Hughes Medical Institute, Children’s Research Institute, University of Texas Southwestern Medical Center)

Abstract

Many aspects of cellular physiology remain unstudied in somatic stem cells, for example, there are almost no data on protein synthesis in any somatic stem cell. Here we set out to compare protein synthesis in haematopoietic stem cells (HSCs) and restricted haematopoietic progenitors. We found that the amount of protein synthesized per hour in HSCs in vivo was lower than in most other haematopoietic cells, even if we controlled for differences in cell cycle status or forced HSCs to undergo self-renewing divisions. Reduced ribosome function in Rpl24Bst/+ mice further reduced protein synthesis in HSCs and impaired HSC function. Pten deletion increased protein synthesis in HSCs but also reduced HSC function. Rpl24Bst/+ cell-autonomously rescued the effects of Pten deletion in HSCs; blocking the increase in protein synthesis, restoring HSC function, and delaying leukaemogenesis. Pten deficiency thus depletes HSCs and promotes leukaemia partly by increasing protein synthesis. Either increased or decreased protein synthesis impairs HSC function.

Suggested Citation

  • Robert A. J. Signer & Jeffrey A. Magee & Adrian Salic & Sean J. Morrison, 2014. "Haematopoietic stem cells require a highly regulated protein synthesis rate," Nature, Nature, vol. 509(7498), pages 49-54, May.
    • Handle: RePEc:nat:nature:v:509:y:2014:i:7498:d:10.1038_nature13035
    DOI: 10.1038/nature13035
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    Cited by:

    1. Joana Silva & Ferhat Alkan & Sofia Ramalho & Goda Snieckute & Stefan Prekovic & Ana Krotenberg Garcia & Santiago Hernández-Pérez & Rob Kammen & Danielle Barnum & Liesbeth Hoekman & Maarten Altelaar & , 2022. "Ribosome impairment regulates intestinal stem cell identity via ZAKɑ activation," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Naomi R. Genuth & Zhen Shi & Koshi Kunimoto & Victoria Hung & Adele F. Xu & Craig H. Kerr & Gerald C. Tiu & Juan A. Oses-Prieto & Rachel E. A. Salomon-Shulman & Jeffrey D. Axelrod & Alma L. Burlingame, 2022. "A stem cell roadmap of ribosome heterogeneity reveals a function for RPL10A in mesoderm production," Nature Communications, Nature, vol. 13(1), pages 1-19, December.
    3. Narasaiah Kovuru & Makiko Mochizuki-Kashio & Theresa Menna & Greer Jeffrey & Yuning Hong & Young me Yoon & Zhe Zhang & Peter Kurre, 2024. "Deregulated protein homeostasis constrains fetal hematopoietic stem cell pool expansion in Fanconi anemia," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
    4. Pekka Jaako & Alexandre Faille & Shengjiang Tan & Chi C. Wong & Norberto Escudero-Urquijo & Pablo Castro-Hartmann & Penny Wright & Christine Hilcenko & David J. Adams & Alan J. Warren, 2022. "eIF6 rebinding dynamically couples ribosome maturation and translation," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    5. Jacqueline Feyen & Zhen Ping & Lanpeng Chen & Claire Dijk & Tim V. D. Tienhoven & Paulina M. H. Strien & Remco M. Hoogenboezem & Michiel J. W. Wevers & Mathijs A. Sanders & Ivo P. Touw & Marc H. G. P., 2022. "Myeloid cells promote interferon signaling-associated deterioration of the hematopoietic system," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    6. Florisela Herrejon Chavez & Hanzhi Luo & Paolo Cifani & Alli Pine & Karen L. Chu & Suhasini Joshi & Ersilia Barin & Alexandra Schurer & Mandy Chan & Kathryn Chang & Grace Y. Q. Han & Aspen J. Pierson , 2023. "RNA binding protein SYNCRIP maintains proteostasis and self-renewal of hematopoietic stem and progenitor cells," Nature Communications, Nature, vol. 14(1), pages 1-19, December.

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