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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2017 ; 8
(1
): 444
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Cre/lox-assisted non-invasive in vivo tracking of specific cell populations by
positron emission tomography
#MMPMID28874662
Thunemann M
; Schörg BF
; Feil S
; Lin Y
; Voelkl J
; Golla M
; Vachaviolos A
; Kohlhofer U
; Quintanilla-Martinez L
; Olbrich M
; Ehrlichmann W
; Reischl G
; Griessinger CM
; Langer HF
; Gawaz M
; Lang F
; Schäfers M
; Kneilling M
; Pichler BJ
; Feil R
Nat Commun
2017[Sep]; 8
(1
): 444
PMID28874662
show ga
Many pathophysiological processes are associated with proliferation, migration or
death of distinct cell populations. Monitoring specific cell types and their
progeny in a non-invasive, longitudinal and quantitative manner is still
challenging. Here we show a novel cell-tracking system that combines
Cre/lox-assisted cell fate mapping with a thymidine kinase (sr39tk) reporter gene
for cell detection by positron emission tomography (PET). We generate
Rosa26-mT/sr39tk PET reporter mice and induce sr39tk expression in platelets, T
lymphocytes or cardiomyocytes. As proof of concept, we demonstrate that our mouse
model permits longitudinal PET imaging and quantification of T-cell homing during
inflammation and cardiomyocyte viability after myocardial infarction. Moreover,
Rosa26-mT/sr39tk mice are useful for whole-body characterization of transgenic
Cre mice and to detect previously unknown Cre activity. We anticipate that the
Cre-switchable PET reporter mice will be broadly applicable for non-invasive
long-term tracking of selected cell populations in vivo.Non-invasive cell
tracking is a powerful method to visualize cells in vivo under physiological and
pathophysiological conditions. Here Thunemann et al. generate a mouse model for
in vivo tracking and quantification of specific cell types by combining a PET
reporter gene with Cre-dependent activation that can be exploited for any cell
population for which a Cre mouse line is available.