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. 2022 May 12;24(1):204. doi: 10.3892/ol.2022.13325

Figure 4.

Figure 4.

Metformin induces esophageal cancer cell autophagy via the STAT3/Bcl-2/ATG pathway. Metformin inhibits STAT3 expression to decrease Bcl-2 protein expression, which upregulates expression of autophagy marker ATG, thus inducing autophagy to slow tumor growth of esophageal cancer.