PROM1 and infection: After infection with miR‐18a‐5p‐LV, CD133+ stem‐like cells generated similar spheroids (29 ± 1%) to EV control (25 ± 1%), suggesting that miR‐18a‐5p did not affect the self‐renewal of CD133+ stem‐like cells (P > .05, n = 5, Figure 2E).