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This research investigates how ribosomal protein stoichiometry affects erythroid development and fetal hematopoiesis.

April 10, 2026Nature CommunicationsOpen Access

RPS19 and RPL5 haploinsufficient models reveal divergent ribosomal subunit controls of fetal hematopoiesis

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In vivo models demonstrate how ribosomal protein haploinsufficiency affects fetal hematopoiesis, suggesting key roles for subunit functions.

This research investigates how ribosomal protein stoichiometry affects erythroid development and fetal hematopoiesis.
Utilized in vivo haploinsufficient models for RPS19 and RPL5
Examined functional impacts on hematopoietic stem and progenitor cells (HSPCs)
Analyzed pathways involving p53-mediated cell death and gene regulation
Investigated the role of Runx1 in RPS19 haploinsufficiency
RPL5 haploinsufficiency leads to HSPC accumulation and prenatal lethality via p53-mediated ferroptosis.
RPS19 haploinsufficiency causes HSPC depletion and impaired erythroid expansion through apoptosis.
RUNX1 upregulation correlates with RPS19 haploinsufficiency and is present in DBAS patients.
Runx1 deletion partially rescues HSPC numbers in RPS19-haploinsufficient models.

Tang et al. (2026) studied this question.

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In vivo models demonstrate how ribosomal protein haploinsufficiency affects fetal hematopoiesis, suggesting key roles for subunit functions.