Mesenchymal Inflammation Drives Genotoxic Stress in Hematopoietic Stem Cells and Predicts Disease Evolution in Human Pre-leukemia

Noemi A. Zambetti, Zhen Ping, Si Chen, Keane J. G. Kenswil, Maria A. Mylona, Mathijs A. Sanders, Remco M. Hoogenboezem, Eric M. J. Bindels, Maria N. Adisty, Paulina M. H. van Strien, Cindy S. van der Leije, Theresia M. Westers, Eline M. P. Cremers, Chiara Milanese, Pier G. Mastroberardino, Johannes P. T. M. van Leeuwen, Bram C. J. van der Eerden, Ivo P. Touw, Taco W. Kuijpers, Roland KanaarArjan A. van de Loosdrecht, Thomas Vogl, Marc H. G. P. Raaijmakers

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247 Citations (Scopus)


Mesenchymal niche cells may drive tissue failure and malignant transformation in the hematopoietic system, but the underlying molecular mechanisms and relevance to human disease remain poorly defined. Here, we show that perturbation of mesenchymal cells in a mouse model of the pre-leukemic disorder Shwachman-Diamond syndrome (SDS) induces mitochondrial dysfunction, oxidative stress, and activation of DNA damage responses in hematopoietic stem and progenitor cells. Massive parallel RNA sequencing of highly purified mesenchymal cells in the SDS mouse model and a range of human pre-leukemic syndromes identified p53-S100A8/9-TLR inflammatory signaling as a common driving mechanism of genotoxic stress. Transcriptional activation of this signaling axis in the mesenchymal niche predicted leukemic evolution and progression-free survival in myelodysplastic syndrome (MDS), the principal leukemia predisposition syndrome. Collectively, our findings identify mesenchymal niche-induced genotoxic stress in heterotypic stem and progenitor cells through inflammatory signaling as a targetable determinant of disease outcome in human pre-leukemia
Original languageEnglish
Pages (from-to)613-627
Number of pages15
JournalCell Stem Cell
Issue number5
Publication statusPublished - 3 Nov 2016

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