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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 J+Clin+Invest
2017 ; 127
(1
): 117-131
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Epithelial-to-mesenchymal transition drives a pro-metastatic Golgi compaction
process through scaffolding protein PAQR11
#MMPMID27869652
Tan X
; Banerjee P
; Guo HF
; Ireland S
; Pankova D
; Ahn YH
; Nikolaidis IM
; Liu X
; Zhao Y
; Xue Y
; Burns AR
; Roybal J
; Gibbons DL
; Zal T
; Creighton CJ
; Ungar D
; Wang Y
; Kurie JM
J Clin Invest
2017[Jan]; 127
(1
): 117-131
PMID27869652
show ga
Tumor cells gain metastatic capacity through a Golgi phosphoprotein 3-dependent
(GOLPH3-dependent) Golgi membrane dispersal process that drives the budding and
transport of secretory vesicles. Whether Golgi dispersal underlies the
pro-metastatic vesicular trafficking that is associated with
epithelial-to-mesenchymal transition (EMT) remains unclear. Here, we have shown
that, rather than causing Golgi dispersal, EMT led to the formation of compact
Golgi organelles with improved ribbon linking and cisternal stacking. Ectopic
expression of the EMT-activating transcription factor ZEB1 stimulated Golgi
compaction and relieved microRNA-mediated repression of the Golgi scaffolding
protein PAQR11. Depletion of PAQR11 dispersed Golgi organelles and impaired
anterograde vesicle transport to the plasma membrane as well as retrograde
vesicle tethering to the Golgi. The N-terminal scaffolding domain of PAQR11 was
associated with key regulators of Golgi compaction and vesicle transport in
pull-down assays and was required to reconstitute Golgi compaction in
PAQR11-deficient tumor cells. Finally, high PAQR11 levels were correlated with
EMT and shorter survival in human cancers, and PAQR11 was found to be essential
for tumor cell migration and metastasis in EMT-driven lung adenocarcinoma models.
We conclude that EMT initiates a PAQR11-mediated Golgi compaction process that
drives metastasis.