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. 2020 Nov 17;11(11):987. doi: 10.1038/s41419-020-03189-z

Fig. 1. Exosome-mediated mechanisms underlying BC chemoresistance.

Fig. 1

A Chemotherapeutic drugs are secreted when they are encapsulated in the exosomes. B Exosomes mediate horizontal transfer of membrane-embedded drug efflux pumps to sensitive cancer cells to favor the drug efflux. Exosomes also deliver functional proteins/miRNAs to upregulate P-gp expression in sensitive cancer cells. C Exosomes transfer bioactive cargos that promote cancer cell proliferation, survival, drug inactivation, DNA damage repair, EMT, and stem-like property. Created with BioRender.com.