Exosomes contribute to ASPH mediated aggressive malignant phenotypes in PC, which are significantly attenuated in vitro by N-SMase inhibitor GW4869.
*p < 0.05; **p < 0.01; ***p < 0.001.
(A) ECM degradation/remodeling in response to GW4869.
(B) GW4869 blocks ECM degradation/remodeling of parental PC cells, which could be completely rescued by addition of exosomes secreted by MIA Paca2 cells stably expressing ASPH (vector to a much less extent).
(C) 3D tumor spheroid invasion in response to GW4869.
(D) 3-D pancreatosphere formation in response to GW4869.
(E) Transendothelial migration and intravasation/extravasation.
(F) Invasion through basement membrane and subsequent pancreatosphere formation in response to GW4869.
(G) Synthesis/release of exosomes in response to GW4869.