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@ARTICLE{Walter:127743,
author = {D. Walter$^*$ and A. Lier$^*$ and A. Geiselhart$^*$ and F.
B. Thalheimer and S. Huntscha$^*$ and M. C. Sobotta$^*$ and
B. Moehrle and D. Brocks$^*$ and I. Bayindir$^*$ and P. E.
Kaschutnig$^*$ and K. Muedder$^*$ and C. Klein$^*$ and A.
Jauch and T. Schroeder and H. Geiger and T. Dick$^*$ and T.
Holland-Letz$^*$ and P. Schmezer$^*$ and S. W. Lane and M.
A. Rieger and M. Essers$^*$ and D. A. Williams and A.
Trumpp$^*$ and M. Milsom$^*$},
title = {{E}xit from dormancy provokes {DNA}-damage-induced
attrition in haematopoietic stem cells.},
journal = {Nature},
volume = {520},
number = {7548},
issn = {1476-4687},
address = {London [u.a.]},
publisher = {Nature Publ. Group},
reportid = {DKFZ-2017-03766},
pages = {549 - 552},
year = {2015},
abstract = {Haematopoietic stem cells (HSCs) are responsible for the
lifelong production of blood cells. The accumulation of DNA
damage in HSCs is a hallmark of ageing and is probably a
major contributing factor in age-related tissue degeneration
and malignant transformation. A number of accelerated ageing
syndromes are associated with defective DNA repair and
genomic instability, including the most common inherited
bone marrow failure syndrome, Fanconi anaemia. However, the
physiological source of DNA damage in HSCs from both normal
and diseased individuals remains unclear. Here we show in
mice that DNA damage is a direct consequence of inducing
HSCs to exit their homeostatic quiescent state in response
to conditions that model physiological stress, such as
infection or chronic blood loss. Repeated activation of HSCs
out of their dormant state provoked the attrition of normal
HSCs and, in the case of mice with a non-functional Fanconi
anaemia DNA repair pathway, led to a complete collapse of
the haematopoietic system, which phenocopied the highly
penetrant bone marrow failure seen in Fanconi anaemia
patients. Our findings establish a novel link between
physiological stress and DNA damage in normal HSCs and
provide a mechanistic explanation for the universal
accumulation of DNA damage in HSCs during ageing and the
accelerated failure of the haematopoietic system in Fanconi
anaemia patients.},
keywords = {Reactive Oxygen Species (NLM Chemicals)},
cin = {A010 / A160 / A012 / A011 / C060 / C010},
ddc = {070},
cid = {I:(DE-He78)A010-20160331 / I:(DE-He78)A160-20160331 /
I:(DE-He78)A012-20160331 / I:(DE-He78)A011-20160331 /
I:(DE-He78)C060-20160331 / I:(DE-He78)C010-20160331},
pnm = {311 - Signalling pathways, cell and tumor biology
(POF3-311)},
pid = {G:(DE-HGF)POF3-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:25707806},
doi = {10.1038/nature14131},
url = {https://inrepo02.dkfz.de/record/127743},
}