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2016 ; 2
(ä): 15069-
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Endocytosis and serpentine filopodia drive blebbishield-mediated resurrection of
apoptotic cancer stem cells
#MMPMID27226900
Jinesh GG
; Kamat AM
Cell Death Discov
2016[]; 2
(ä): 15069-
PMID27226900
show ga
The blebbishield emergency program helps to resurrect apoptotic cancer stem cells
(CSCs) themselves. Understanding the mechanisms behind this program is essential
to block resurrection of CSCs during cancer therapy. Here we demonstrate that
endocytosis drives serpentine filopodia to construct blebbishields from apoptotic
bodies and that a VEGF-VEGFR2-endocytosis-p70S6K axis governs subsequent
transformation. Disengagement of RalGDS from E-cadherin initiates endocytosis of
RalGDS and its novel interaction partners cdc42, VEGFR2, cleaved ?-catenin, and
PKC-? as well as its known interaction partner K-Ras. We also report novel
interactions of p45S6K (cleaved p70S6K) and PKM-? with PAK-1 filopodia-forming
machinery specifically in blebbishields. Thus, a
RalGDS-endocytosis-filopodia-VEGFR2-K-Ras-p70S6K axis drives the blebbishield
emergency program, and therapeutic targeting of this axis might prevent
resurrection of CSCs during cancer therapy.