miR-221/222 Profiles in Small Extracellular Vesicles Derived from Gemcitabine-Sensitive and -Resistant A549 Cancer Stem-Like Cell Spheroids: An In Vitro Study
Background: Gemcitabine is used in the treatment of human non-small cell lung cancer (hNSCLC), yet acquired resistance can limit therapeutic responses. Small extracellular vesicles (sEVs) and microRNAs (miRNAs) have been implicated in chemoresistance-associated intercellular signaling. We profiled the miR-221/222 clust...