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@ARTICLE{Mainz:179297,
author = {L. Mainz and M. A. F. E. Sarhan and S. Roth and U. Sauer
and C. Kalogirou and M. Eckstein and E. Gerhard-Hartmann and
H.-D. Seibert and H.-U. Voelker and C. Geppert and A.
Rosenwald and M. Eilers and A. Schulze$^*$ and M.
Diefenbacher and M. T. Rosenfeldt},
title = {{A}cute systemic knockdown of {A}tg7 is lethal and causes
pancreatic destruction in sh{RNA} transgenic mice.},
journal = {Autophagy},
volume = {18},
number = {12},
issn = {1554-8627},
address = {Abingdon, Oxon},
publisher = {Taylor $\&$ Francis},
reportid = {DKFZ-2022-00579},
pages = {2880-2893},
year = {2022},
note = {2022 Dec;18(12):2880-2893},
abstract = {The notion that macroautophagy/autophagy is a potentially
attractive therapeutic target for a variety of diseases,
including cancer, largely stems from pre-clinical mouse
studies. Most of these examine the effects of irreversible
and organ confined autophagy deletion using site specific
Cre-loxP recombination of the essential autophagy regulating
genes Atg7 or Atg5. Model systems with the ability to impair
autophagy systemically and reversibly at all disease stages
would allow a more realistic approach to evaluate the
consequences of authophagy inhibition as a therapeutic
concept and its potential side effects. Here, we present
shRNA transgenic mice that via doxycycline (DOX) regulable
expression of a highly efficient miR30-E-based shRNA enabled
knockdown of Atg7 simultaneously in the majority of organs,
with the brain and spleen being noteable exceptions. Induced
animals deteriorated rapidly and experienced profound
destruction of the exocrine pancreas, severe hypoglycemia
and depletion of hepatic glycogen storages. Cessation of DOX
application restored apparent health, glucose homeostasis
and pancreatic integrity. In a similar Atg5 knockdown model
we neither observed loss of pancreatic integrity nor
diminished survival after DOX treatment, but identified
histological changes consistent with steatohepatitis and
hepatic fibrosis in the recovery period after termination of
DOX. Regulable Atg7-shRNA mice are valuable tools that will
enable further studies on the role of autophagy impairment
at various disease stages and thereby help to evaluate the
consequences of acute autophagy inhibition as a therapeutic
concept.},
keywords = {Atg5 (Other) / Atg7 (Other) / autophagy (Other) / liver
(Other) / pancreas (Other) / shRNA transgenic mice (Other)},
cin = {A410},
ddc = {570},
cid = {I:(DE-He78)A410-20160331},
pnm = {311 - Zellbiologie und Tumorbiologie (POF4-311)},
pid = {G:(DE-HGF)POF4-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35343375},
doi = {10.1080/15548627.2022.2052588},
url = {https://inrepo02.dkfz.de/record/179297},
}