Skip to main content
. 2021 Jul 6;9:665321. doi: 10.3389/fcell.2021.665321

FIGURE 3.

FIGURE 3

Once implanted and vascularized, a tumor could grow rapidly, invading host tissues, spreading in the circulation, and installing in distant pre-metastatic niches, thanks to progression checkpoint factors (HLA-G, HSP70, miRNAs, mRNAs, lncRNAs, ITGs, and GFs) released in extracellular vesicles (exosomes in particular) by cancer stem cells (CSCs) and cancer progenitor cells (CPCs) and able to impair all immune cells.