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. 2023 May 23;13(6):877. doi: 10.3390/biom13060877

Figure 3.

Figure 3

MiRNAs and chemotherapy. The mechanisms of chemotherapy resistance in tumors: (A) Abnormal DNA damage repair; (B) Removal of damaged organelles by autophagy; (C) Abnormal expression of drug transport proteins and consequently reduction of drug concentration; (D) Blocking apoptosis and ferroptosis. MiRNAs can cause or reverse chemotherapy resistance through the mechanisms described above.