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2017 ; 8
(9
): 15539-15552
Nephropedia Template TP
gab.com Text
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Tunneling nanotubes promote intercellular mitochondria transfer followed by
increased invasiveness in bladder cancer cells
#MMPMID28107184
Lu J
; Zheng X
; Li F
; Yu Y
; Chen Z
; Liu Z
; Wang Z
; Xu H
; Yang W
Oncotarget
2017[Feb]; 8
(9
): 15539-15552
PMID28107184
show ga
Intercellular transfer of organelles via tunneling nanotubes (TNTs) is a novel
means of cell-to-cell communication. Here we demonstrate the existence of TNTs
between co-cultured RT4 and T24 bladder cancer cells using light microscopy,
fluorescence imaging, and scanning electron microscopy (SEM). Spontaneous
unidirectional transfer of mitochondria from T24 to RT4 cells was detected using
fluorescence imaging and flow cytometry. The distribution of mitochondria
migrated from T24 cells was in good agreement with the original mitochondria in
RT4 cells, which may imply mitochondrial fusion. We detected cytoskeleton
reconstruction in RT4-Mito-T24 cells by observing F-actin redistribution. Akt,
mTOR, and their downstream mediators were activated and increased. The resultant
increase in the invasiveness of bladder cancer cells was detected in vitro and in
vivo. These data indicate that TNTs promote intercellular mitochondrial transfer
between heterogeneous cells, followed by an increase in the invasiveness of
bladder cancer cells.