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@ARTICLE{Beckrge:276481,
author = {Beckröge, Tobias and Jux, Bettina and Seifert, Hannah and
Theobald, Hannah and De Domenico, Elena and Paulusch, Stefan
and Beyer, Marc and Schlitzer, Andreas and Mass, Elvira and
Kolanus, Waldemar},
title = {{I}mpaired primitive erythropoiesis and defective vascular
development in {T}rim71-{KO} embryos.},
journal = {Life science alliance},
volume = {8},
number = {4},
issn = {2575-1077},
address = {Heidelberg},
publisher = {EMBO Press},
reportid = {DZNE-2025-00300},
pages = {e202402956},
year = {2025},
abstract = {The transition of an embryo from gastrulation to
organogenesis requires precisely coordinated changes in gene
expression, but the underlying mechanisms remain unclear.
The RNA-binding protein Trim71 is essential for development
and serves as a potent regulator of post-transcriptional
gene expression. Here, we show that global deficiency of
Trim71 induces severe defects in mesoderm-derived cells at
the onset of organogenesis. Murine Trim71-KO embryos
displayed impaired primitive erythropoiesis, yolk sac
vasculature, heart function, and circulation, explaining the
embryonic lethality of these mice. Tie2 Cre Trim71
conditional knockout did not induce strong defects, showing
that Trim71 expression in endothelial cells and their
immediate progenitors is dispensable for embryonic survival.
scRNA-seq of E7.5 global Trim71-KO embryos revealed that
transcriptomic changes arise already at gastrulation,
showing a strong up-regulation of the mesodermal pioneer
transcription factor Eomes. We identify Eomes as a direct
target of Trim71-mediated mRNA repression via the NHL
domain, demonstrating a functional link between these
important regulatory genes. Taken together, our data suggest
that Trim71-dependent control of gene expression at
gastrulation establishes a framework for proper development
during organogenesis.},
keywords = {Animals / Erythropoiesis: genetics / Mice / Mice, Knockout
/ Gene Expression Regulation, Developmental: genetics /
Embryo, Mammalian: metabolism / Organogenesis: genetics /
Yolk Sac: metabolism / Yolk Sac: blood supply / Yolk Sac:
embryology / T-Box Domain Proteins: genetics / T-Box Domain
Proteins: metabolism / Gastrulation: genetics / Endothelial
Cells: metabolism / Female / RNA-Binding Proteins:
metabolism / RNA-Binding Proteins: genetics / Mesoderm:
metabolism / Mesoderm: embryology / T-Box Domain Proteins
(NLM Chemicals) / RNA-Binding Proteins (NLM Chemicals)},
cin = {AG Schultze / PRECISE / AG Beyer},
ddc = {570},
cid = {I:(DE-2719)1013038 / I:(DE-2719)1013031 /
I:(DE-2719)1013035},
pnm = {354 - Disease Prevention and Healthy Aging (POF4-354) / 352
- Disease Mechanisms (POF4-352) / 351 - Brain Function
(POF4-351)},
pid = {G:(DE-HGF)POF4-354 / G:(DE-HGF)POF4-352 /
G:(DE-HGF)POF4-351},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39909558},
doi = {10.26508/lsa.202402956},
url = {https://pub.dzne.de/record/276481},
}