[Knockdown mitochondrial transcription factor A (TFAM) inhibits autophagy, proliferation, invasion and migration in human cervical cancer and osteosarcoma cells].

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assay and scratch healing assay were used to detect changes in cell invasion and migration. Results The downregulation of TFAM expression resulted in a decrease in MMP and mtDNA copy number, but an increase in mtROS production. The protein content of LC3A/B decreased significantly compared to the control group and the number of autophagosomes in the cytoplasm decreased significantly. The expressions of ATG2B and ATG9A in the early stage of autophagy were significantly reduced. The expressions of Snail, MMP2 and MMP9 proteins in HeLa and U2OS cells were also decreased. The proliferation, invasion and migration ability of HeLa and U2OS cells were inhibited after being interfered with TFAM expression. Conclusion Downregulation of TFAM expression inhibits mitochondrial function, delays autophagy process and reduces the proliferation, invasion and migration ability of cervical cancer cells and osteosarcoma cells.

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